Socalchemmis gertschi, PLATNICK & UBICK, 2001

PLATNICK, NORMAN I. & UBICK, DARRELL, 2001, A Revision of the North American Spiders of the New Genus Socalchemmis (Araneae, Tengellidae), American Museum Novitates 3339, pp. 1-26 : 7-25

Socalchemmis gertschi , new species

Figures 6–10 ; map 2

TYPE: Male holotype from Brentwood , Los Angeles Co., California (Nov. 14, 1952; B. Brattstrom), deposited in AMNH .

ETYMOLOGY: The specific name is a patronym in honor of the late Willis Gertsch, in recognition of his long­standing interest in this group.

DIAGNOSIS: Males can be recognized by the large dorsal prong of the retrolateral tibial apophysis, which is almost twice the length of the ventral prong (fig. 8) and has a distinctive basal projection in ventral view (fig. 7); females have the epigynal septum only slightly widened posteriorly, where the tip is truncated and protrudes slightly posterior of the paramedian ridges (fig. 9).

MALE: Total length 7.1. Coloration as in S. dolichopus except abdominal dorsum with dusky cardiac mark and posterior chevrons. Leg spination: femora: I p0­1­1; II p0­2­1; metatarsi: I r1­1­0; II p1­1­0. Embolus relatively short, wide, with distinct invagination just anterior of midpoint; dorsal prong of retrolateral tibial apophysis much larger than ventral prong, ventrally scooped (figs. 6–8).

FEMALE: Total length 12.4. Pars cephalica dark brown, pars thoracica light brown with darker radiating markings, abdomen as in male, femora light brown, more distal leg segments dark brown. Leg spination: femora: I p0­1­1; IV p1­1­1, r0­1­1; tibiae I, II d0­0­ 0; metatarsi I, II p0­0­0, r0­0­0. Epigynal septum narrowest anteriorly, sides parallel for most of length, posterior tip truncated, protruding past paramedian ridges that meet almost semicircular lateral margins, atrium relatively deep (fig. 9); spermathecae massive, lobes laterally situated (fig. 10).

OTHER MATERIAL EXAMINED: California : Los Angeles Co.: Brentwood, Nov. 14, 1952 (B. Brattstrom, AMNH) , 1?; Los Angeles , no specific locality (not plotted on map), 1936 (G. Grant, AMNH) , 1?, 1/; Old Topanga Canyon Road , 4.7 mi from Route 27, Nov. 20, 1982 (G. Lowe, CGL) , 1?; Topanga Canyon , May 4, 1997 (J. Kempf, UCR) , 1/.

DISTRIBUTION: Known only from Los Angeles County, California (map 2)1.

Socalchemmis bixleri , new species

Figures 11–15 ; map 2

TYPE: Male holotype from Tanbark Flats,

San Gabriel Mountains, Los Angeles Co., California (June 20, 1952; W. Gertsch), deposited in AMNH.

ETYMOLOGY: The specific name is a patronym in honor of Dr. David Bixler, who made available important specimens of this species.

DIAGNOSIS: Males can be recognized by the shape of the dorsal prong of the retrolateral tibial apophysis, which in ventral view has sharply angular indentations near its base (fig. 12); females have a wide, broadly point­ ed epigynal septum (fig. 14) and anterolateral spermathecal lobes that are much less pronounced than in other members of the dolichopus group.

MALE: Total length 10.3. Coloration as in S. dolichopus . Leg spination: metatarsi: I r1­ 1­0; II p1­1­0. Embolus relatively short, almost straight, with deep incision below tip; dorsal prong of retrolateral tibial apophysis sharply narrowed at about its length, resulting in sharply angular indentations as viewed ventrally (figs. 11–13).

FEMALE: Total length 12.2. Coloration as in S. dolichopus . Leg spination: femora: I p1­ 1­1; IV p2­0­1, r0­0­2; tibiae: I, II d0­0­0; metatarsi: I, II p0­0­0, r0­0­0. Epigynal septum arrow­shaped, only slightly widened at about two­thirds its length (fig. 14); anterolateral spermathecal lobes produced dorsally (fig. 15).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: Los Angeles Co.: Angeles National Forest , Highway 2, near Angeles Crest Rang­ er Station, Jan. 1993, on rocks at night (B. Hebert, CBH) , 2?, 1/; Angeles National Forest , Mount Baldy Village, Nov. 24, 1979, in house (D. Carroll, CDFA) , 1?; Bailey Canyon , Jan. 11, 1970 (M. Thompson, MET) , 1?; Los Angeles , no specific locality (not plotted on map) (F. Russell, AMNH) , 1?; Sierra Madre (AMNH), 1?; Tanbark Flats , San Gabriel Mountains, June 20, 1952 (W. Gertsch, AMNH) , 3?, 1/, Mar. 30, 1957 ( AMNH) , 1/. San Bernardino Co.: Fawnskin , San Bernardino Mountains, fall 1993 (B. Miller, CAS) , 1?; Lytle Creek Canyon, Nov. 20, 1969, in house, elev. 3000 ft (D. Bixler, CDB) , 1?, Apr. 1, 1970 (D. Bixler, CDB) , 1?, May 24, 1971, at light on porch (D. Bixler, CDB) , 1/; Pioneertown , University of California Burns Reserve, Oct. 28, 1993 ( CAS) , 1?.

DISTRIBUTION: Known only from Los Angeles and San Bernardino counties, California (map 2).

Socalchemmis kastoni , new species

Figures 16–20 ; maps 1, 2

TYPE: Male holotype from Jamul , San Diego Co., California (Dec. 29, 1947; W. Pearce), deposited in AMNH .

ETYMOLOGY: The specific name is a patronym in honor of the late Dr. B. J. Kaston, collector of many specimens of this species.

DIAGNOSIS: Males can be recognized by the produced ventral lobe situated on the embolus, just below its incision (fig. 18), females by the procurved posterior margin of the epigynal septum (fig. 19).

MALE: Total length 7.4. Coloration as in S. dolichopus . Leg spination: femora: II p0­2­ 1; IV p2­0­1, r0­0­2; metatarsi II p1­1­0. Embolus with distinct, produced ventral lobe situated just posterior of embolar incision; dorsal prong of retrolateral tibial apophysis arrow­shaped in ventral view (figs. 16–18).

FEMALE: Total length 13.6. Coloration as in S. gertschi . Leg spination: femora: I p0­1­ 1; IV p2­0­1, r0­0­1; tibiae: I d0­0­0, r0­0­0; II d0­0­0; metatarsi I, II p0­0­0, r0­0­0. Epigynal septum relatively narrow anteriorly, widened posteriorly, with procurved posterior margin (fig. 19); spermathecae fused by arch­shaped median bridge (fig. 20).

OTHER MATERIAL EXAMINED: ARIZONA: Pima Co.: Tucson , Jan. 1, 1980 (D. Boe, CAS) , 1?. CALIFORNIA: Los Angeles Co.: Avalon, Santa Catalina Island , Nov. 21, 1927 ( AMNH) , 1?, July 24, 1961 (V. Roth, AMNH) , 1/; El Monte , Apr. 13, 1968 ( WRIK) , 1?; Los Angeles , no specific locality (not plotted on map), Sept. 1948 (J. Soule, AMNH) , 1?; West Los Angeles , Mar.–Aug. 1943 (D. Verrity, AMNH) , 1?. Orange Co.: Anaheim , 21263 Hohler Drive, 1963 (F. Handsfield, Jr., AMNH) , 3?; Santa Ana Mountains, 0.25 mi S Highway 74, 2.5 road mi E San Juan Fire Station ( Hot Spring Canyon turnoff), Dec. 25, 1999, pitfalls in live oaks and chaparral on rocky, west­facing canyon side, elev. 1200 ft (W. Icenogle, WRI) , 2?. San Diego Co.: Alpine , Feb. 21, 1970 (P. Lancaster, WRIK) , 1?; De Luz Road , 2 mi N Mission Road, Nov. 26, 1982 (G. Lowe, CGL) , 1?; El Cajon , May 4, 1970, on ground (J. Hambric, WRIC) , 1?; Horse Heaven Public Camp, Mount Laguna , May 22, 1963 (C. Parrish, AMNH) , 1/; Lakeside , June 1970 (D. Rees, WRIK) , 1?; La Mesa, Nov. 4, 1975, in house (V. Cooke, CDFA) , 1?; Marine Corps Base Camp Pendleton , June 1–15, 1995, pitfalls, coastal sage scrub (R. Redak, UCR, CAS) , 4?, Nov. 29– Dec. 16, 1995, pitfalls, coastal sage scrub (R. Redak, UCR, CAS) , 3?; Miramar Naval Air Station , May 22–29, 1995, pitfall, coastal sage scrub (R. Redak, UCR) , 1?, June , 1995, pitfall, coastal sage scrub (R. Redak, CAS) , 1/, Dec. 3–16, 1995, pitfalls, coastal sage scrub (R. Redak, UCR, CAS) , 3?; Poway , Feb. 25, 1970 (C. Penny, WRIK) , 1?; Mount Helix, La Mesa, Mar. 15, 1971 (S. Johnson, AMNH) , 1?; San Diego , Nov. 16, 1967 (F. Lowe, WRIK) , 1?; San Diego, near San Diego State University , all collected by B. Kaston, pitfalls, Apr. 1969 ( WRIK) , 1?, Sept. 1970 ( WRIK) , 1/, Oct. 1970 ( WRIK) , 2?, Nov. 1970 ( WRIK) , 6?, Dec. 1970 ( CAS) , 4?, Mar. 1971 ( WRIK) , 1?, Dec. 1971 ( WRIK) , 2?; Spring Valley , Jan. 6, 1967 (T. Boyer, WRIK) , 1/, Mar. 25, 1971 (S. Johnson, AMNH) , 1?. Mexico: Baja California Norte: Hamilton Ranch, Colonia Guerrero, May 5, 1961 (W. Gertsch, V. Roth, AMNH) , 1?.

DISTRIBUTION: Apparently widespread in southern California , Arizona, and Baja California Norte (maps 1, 2)1 .

Socalchemmis shantzi , new species

Figures 21–25 ; map 1

TYPE: Male holotype from Santa Barbara , Santa Barbara Co., California (June 20, 1950; H. Shantz), deposited in AMNH .

ETYMOLOGY: The specific name is a patronym in honor of the collector of the holotype.

DIAGNOSIS: Males can easily be recognized by the posterior projection on the base of the embolus (figs. 21–23), females by the lateral, lowered lobes situated on either side of the epigynal septum throughout the middle third of its length (fig. 24).

MALE: Total length 8.5. Coloration as in S. gertschi . Leg spination: femora: II p0­2­1; IV r0­0­2; metatarsi: I r1­1­0; II p1­1­0. Embolar base bearing elevated ridge produced into posterior projection, embolus without distinct incision; tip of dorsal prong of retrolateral tibial apophysis incised more on ventral edge than on dorsal edge (figs. 21–23).

FEMALE: Total length 11.5. Coloration as in S. gertschi . Leg spination: femora: II p0­ 2­1; IV d1­1­0, r0­0­2; tibiae I, II d0­0­0; metatarsi I, II p0­0­0, r0­0­0. Epigynal septum with sinuous lateral margins situated atop lower paramedian bulges (fig. 22); spermathecal lobes directed anterodorsally (fig. 23).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: Santa Barbara Co.: Cold Spring Trail , Santa Barbara, Aug. 14, 1959 (W. Gertsch, V. Roth, AMNH) , 1/, Aug. 16, 1959 (W. Gertsch, V. Roth, AMNH) , 1? (right palp only); Santa Barbara , Sept. 3, 1948 (H. Shantz, AMNH) , 1?, Nov. 1952 (H. Shantz, AMNH) , 1/, Jan.–July 1954 (H. Shantz, AMNH) , 1?; Santa Maria , May 3, 1971, from sleeping bag (J. Betz, CAS) , 1?. Ventura Co.: Ojai , Mar. 1978 ( UCR) , 1/.

DISTRIBUTION: Known only from Santa Barbara and Ventura counties, California (map 1).

Socalchemmis cruz , new species

Figures 64, 65 ; map 1

TYPE: Female holotype from Santa Cruz Island , Santa Barbara Co., California (Apr. 1913; R. Chamberlin), deposited in AMNH .

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: Females can easily be recognized by the anteriorly widened epigynal septum (fig. 64).

MALE: Unknown.

FEMALE: Total length 15.2. Coloration as in S. gertschi . Leg spination: femur IV r0­0­ 1; tibiae I, II d0­0­0; metatarsi I, II p0­0­0, r0­0­0. Epigynal septum anteriorly widened, posteriorly elevated, beak­shaped (fig. 64); spermathecae relatively long (fig. 65).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: Santa Barbara Co.: Santa Cruz Island , no date or collector ( AMNH), 1/; Santa Cruz Island , central valley, 0.25 mi W Research Station, Sept. 10–12, 1982, on ground at night in grove of huge eucalypt trees (W. Icenogle, WRI, CAS), 3 /.

DISTRIBUTION: Known only from Santa Cruz Island, California (map 1).

Socalchemmis monterey , new species

Figures 26–30 ; map 1

TYPE: Male holotype taken at night on Indians Road, W of Arroyo Seco Campground, Monterey Co., California (July 8, 1995; D. Ubick, S. Fend, W. Savary), deposited in CAS.

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality, the most northern known for the genus.

DIAGNOSIS: Males can easily be recognized by the very long embolus and almost equally long median apophysis (fig. 26), females by the medially widened epigynal septum and anterolateral epigynal thickenings (fig. 29).

MALE: Total length 13.2. Coloration as in S. dolichopus . Leg spination: tibiae I–IV d1­ 1­1; metatarsi: I p0­1­0, r1­1­0; II p1­1­0; IV r1­1­2. Embolus long, distally narrow, arched, median apophysis long, with subdistal projection, prongs of retrolateral tibial apophysis relatively narrow, widely separat­ ed (figs. 26–28).

FEMALE: Total length 14.1. Coloration as in S. dolichopus . Leg spination: tibiae: I, II d0­0­0; III, IV d1­1­1; metatarsi I, II p0­0­0, r0­0­0. Epigynal septum much wider medially than anteriorly or posteriorly, accompanied by two anterolateral thickenings (fig. 29); lateral spermathecal lobes curved anteriorly (fig. 20).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: Monterey Co.: Cone Peak Trail , Los Padres National Forest, Aug. 18, 1957 (T. Cohn, AMNH), 1 /.

DISTRIBUTION: Known only from Monterey County, California (map 1).

THE ICENOGLEI GROUP

Members of this group are easily separated from those of the dolichopus group by the median flange on the posteriorly widened median apophysis of the male palp (as in figs. 33, 38). Females are less easy to separate, but those of the icenoglei group tend to have a wider epigynal septum and larger lateral epigynal margins (as in figs. 34, 39, 44) as well as less pronounced anterior spermathecal lobes (as in figs. 35, 40, 45).

Socalchemmis icenoglei , new species

Figures 31–35 ; map 3

TYPE: Male holotype taken in building at Winchester , Riverside Co., California (Nov. 3, 1971; W. Icenogle), deposited in AMNH .

ETYMOLOGY: The specific name is a patronym in honor of Mr. Wendell Icenogle, who has collected an impressive series of this apparently very narrowly distributed species.

DIAGNOSIS: Males can easily be recognized by the blunt tip of the embolus (figs. 31, 32),

Map 3. Southern California and northern Baja California showing the distribution of the Socalchemmis icenoglei group with records of S. icenoglei (N), S. cajalco (N), S. palomar (#), S. idyllwild (C), S. miramar (c), S. prenticei (l), S. rothi (Δ), S. williamsi (A), and S. catavina (v).

females by the shape of the epigynal septum, which is smoothly narrowed posteriorly (fig. 34).

MALE: Total length 7.2. Coloration as in S. dolichopus . Leg spination: femur IV r0­0­2; tibia I d0­0­0, v4­4­1p; metatarsi: I p0­0­0, r1­1­0; II p1­1­0. Embolus very short, blunt, expanded at tip, ventral prong of retrolateral tibial apophysis gradually narrowed toward tip (figs. 31–33).

FEMALE: Total length 9.6. Coloration as in S. dolichopus . Leg spination: femur IV r0­0­ 2; patella III p0­0­0; tibiae: I d0­0­0, p0­0­0, v4­4­1p; II d0­0­0; metatarsi I, II p0­0­0, r0­ 0­0. Epigynal septum triangular, smoothly narrowed toward posterior tip (fig. 34), tips of spermathecal lobes directed medially (fig. 35).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: Riverside Co.: Double Butte, 1 mi NW Winchester, all collected by W. Icenogle, elev. 1500 ft, Nov. 6, 1967, in building ( CAS) , 1?, Nov. 15, 1967, pitfall on hill, coastal sage scrub ( WRI) , 1?, Oct. 24, 1968, in building ( WRI) , 1?, Oct. 28, 1968, pitfall on hill, coastal sage scrub ( WRI) , 1?, Nov. 5, 1969, in building ( WRI) , 1/, Nov. 12, 1969, in building ( WRI) , 1?, Nov. 25, 1969, in building ( WRI) , 1?, Feb. 5, 1970, in building ( WRI) , 1/, Feb. 18, 1973, under rock, coastal sage scrub ( WRI) , 1/, Mar. 11, 1974, under rock, coastal sage scrub ( AMNH) , 1/, Dec. 15, 1974, in building ( CAS) , 1?, Dec. 6, 1977, in building ( WRI) , 1?, Feb. 18, 1978, under rock ( CAS) , 1/, Dec. 12, 1982, in building ( WRI) , 1?, Dec. 8, 1984, in building ( WRI) , 1?, Jan. 5, 1985, in building ( CAS) , 1/, Feb. 6, 1986, in building ( WRI) , 1/, May 1, 1986, found dead in black widow web on building ( WRI) , 1/, same date, on lawn beside house (WRI), 1/, Nov. 15, 1986, on wall in building ( WRI) , 1?, Mar. 6, 1989, in building ( WRI) , 1/, Nov. 8, 1990, in building ( CAS) , 1?, Jan. 6, 1993, on wall in building ( CAS) , 1?, Mar. 12, 1993, on wall in building ( CAS) , 1/ (gravid; laid eggs before Mar. 30, spiderlings began emerging from egg sac Apr. 28), Jan. 12, 1995, pitfall on rocky hillside, coastal sage scrub ( WRI) , 1/, Dec. 11, 1997, on wall in building ( WRI) , 1?; Double Butte, 1.5 mi NW Winchester , Aug. 23, 1969, elev. 1700 ft (matured before Oct. 11, 1969), in tarantula (abandoned rodent) burrow (W. Icenogle, WRI) , 1?; Winchester , Dec. 4, 1967, in building (W. Icenogle, WRI) , 1/, Dec. 1, 1997, pitfall, coastal sage scrub (W. Icenogle, CAS) , 1?.

DISTRIBUTION: Known only from the Winchester area of Riverside County, California (map 3).

Socalchemmis cajalco , new species

Figures 36–40 ; map 3

TYPE: Male holotype taken in pitfall trap in coastal sage scrub on steep, rocky, northfacing canyon side at an elevation of 1000 ft at a site 1.8 mi W of Lake Mathews, just S of Cajalco Road, Riverside Co., California (May 31, 1999; W. Icenogle), deposited in AMNH courtesy of Mr. Icenogle.

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: Males can be recognized by the incised, ventrally projecting tip of the embolar base (fig. 36), females by the very (and almost uniformly) wide epigynal septum (fig. 39).

MALE: Total length 8.1. Coloration as in S. dolichopus except abdominal dorsum almost completely covered with gray pigment, paler over cardiac area. Leg spination: femur IV p0­0­2; metatarsi: I r1­1­0; II p1­1­0. Embolus relatively long, narrow, with protuberant, incised base, ventral prong of retrolateral tibial apophysis greatly widened toward tip (figs. 36–38).

FEMALE: Total length 10.9. Coloration as in male. Leg spination: femora: I p0­1­1, r1­ 1­1; II p0­2­1; IV p1­1­1, r0­0­1; patella IV p0­0­0; tibiae I, II d0­0­0; metatarsi: I p0­0­ 0, r0­0­0; II p1­0­0, r1­0­0. Epigynal septum extremely wide, relatively uniformly wide throughout its length (fig. 39); spermathecal lobes directed anteromedially (fig. 40).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: Riverside Co.: 1.8 mi W Lake Mathews, just S Cajalco Road, all collected by W. Icenogle in pitfall traps on steep, rocky, north­facing canyon side, coastal sage scrub, elev. 1000 ft, Apr. 22, 1999 (matured before May 6) ( WRI) , 1/, May 15, 1999 (matured before June 11, CAS) , 1?, May 15, 1999 (matured before June 29, WRI) , 1/, July 29, 1999 ( CAS) , 1/, Sept. 6–25, 1999 ( WRI) , 3/, Jan. 17, 2000 ( AMNH) , 1?, Aug. 29, 2000 ( WRI) , 1?, Oct. 2, 2000 ( AMNH) , 1/.

DISTRIBUTION: Known only from the Lake Mathews area of Riverside County, California (map 3).

Socalchemmis palomar , new species

Figures 41–45 ; map 3

TYPES: Male holotype and female allotype taken under rotten logs on Mount Palomar , San Diego Co., California (July 25, 1931; W. Ivie), deposited in AMNH .

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: Males can be recognized by the basally narrow embolus, which is incised at about half its length (figs. 41–43), females by the enormously wide, posteriorly narrowed epigynal septum (fig. 44).

MALE: Total length 8.4. Coloration as in S. cajalco . Leg spination: femur IV r0­0­2; metatarsi: I p1­0­0, r0­1­0; II p1­1­0. Embolar base narrow, not produced, embolus incised at about half its length, ventral prong of retrolateral tibial apophysis greatly widened toward tip (figs. 41–43).

FEMALE: Total length 14.8. Coloration as in S. cajalco . Leg spination: femur I p0­1­1; II r1­1­1; IV p1­1­1, r0­0­2; patella III p0­0­ 0, r0­0­0; tibiae I, II d0­0­0; metatarsi I, II p0­1­0, r0­0­0. Epigynal septum three times as wide anteriorly as posteriorly (fig. 44); spermathecae crenulated (fig. 45).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: Orange Co.: Santa Ana Mountains, 0.25 mi S Highway 74, 2.5 road mi E San Juan Fire Station (Hot Spring Canyon turnoff), May 26, 2000, pitfalls in live oaks and chaparral on rocky, west­facing canyon side, elev. 1200 ft (W. Icenogle, WRI), 1? (matured before June 8, 2000), same, Aug. 15– Sept. 18, 2000, 2?, July 22–Sept. 23, 2000, 4/. Riverside Co.: Hemet, 0.2 mi S intersection of Cornell and Crest, July 12, 1998 (R. Mason, UCR), 1?. San Diego Co.: Box Canyon, Anza­Borrego Desert State Park, Apr. 14, 1981, under rock (D. Ubick, CAS), 1/; SW end, Mendenhall Valley, Palomar Mountain, June 3–Aug. 7, 1997, pitfall, forest, elev. 6000 ft (J. George, UCR), 3?.

DISTRIBUTION: Known only from Orange, southern Riverside, and northern San Diego counties, California (map 3).

Socalchemmis idyllwild , new species

Figures 46–50 ; map 3

TYPE: Male holotype from Idyllwild , Riverside Co., California (July 7, 1953; W. & J. Gertsch), deposited in AMNH .

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: Males can be recognized by the shape of the embolus, which has a long base that is twice as wide as the distal portion of the structure (figs. 46, 48), females by the tongue­shaped epigynal septum and long lateral epigynal margins (fig. 49).

MALE: Total length 9.0. Coloration as in S. cajalco . Leg spination: femora: I p0­1­1; II p1­1­1; IV r0­0­2; metatarsi: I p1­0­0, r1­0­ 0; II p1­1­0. Embolar base much wider than tip, which forms semicircular cap set obliquely to base, ventral prong of retrolateral tibial apophysis greatly widened toward tip (figs. 46–48).

FEMALE: Total length 10.9. Coloration as in S. cajalco . Leg spination: femora: I p0­1­ 1, r1­1­1; II p1­1­1; IV p1­1­1, r0­0­2; tibiae: I d0­0­0, p0­0­0, r0­0­0; II d0­0­0; metatarsi: I p0­0­0, r0­0­0; II p1­0­0, r0­0­0. Epigynal septum long, tongue­shaped, lateral epigynal margins long (fig. 49); spermathecae kidneyshaped (fig. 50).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: Riverside Co.: Murrieta , 5 mi W Santa Rosa Plateau, July 31, 1991 (V., B. Roth, CAS) , 2/. San Diego Co.: Del Mar , Apr. 21– Aug, 1956–1957 (J. Comstock, AMNH) , 9?, 3/; San Pasqual Valley , May 17, 1948 (W. Pearce, AMNH) , 1?; Sloan Canyon Road, S Dehesa Road , 8 mi E El Cajon, May 1970, dirt road, chaparral, rocks (C. Croulet, CAS) , 1?.

DISTRIBUTION: Known only from southwestern Riverside and western San Diego counties, California (map 3).

Socalchemmis miramar , new species

Figures 51–55 ; map 3

TYPE: Male holotype from San Diego , San Diego Co., California (July 18, 1948; D. Shankland), deposited in AMNH .

ETYMOLOGY: The specific name is a noun in apposition taken from one of the localities at which the species occurs.

DIAGNOSIS: Males can be recognized by the beak­shaped protuberance at the base of the embolus (figs. 51–53), females by the almost trilobate appearance of the epigynal septum and the short spermathecae (figs. 54, 55).

MALE: Total length 8.1. Coloration as in S. cajalco . Leg spination: femora: I, II p0­1­1; IV r0­0­2; patellae III, IV p0­0­0; tibia I d0­ 0­1; metatarsi I, II p0­1­0, r0­1­0. Embolar base with beak­shaped protrusion, ventral prong of retrolateral tibial apophysis short, greatly widened toward tip (figs. 51–53).

FEMALE: Total length 12.1. Coloration as in S. cajalco . Leg spination: femora: I p0­1­ 1, r1­1­1; IV p1­1­1, r0­0­2; tibiae I, II d0­ 0­0; metatarsi: I p0­0­0, r0­0­0; II p0­1­0, r0­ 0­0. Epigynal septum much wider at middle of length than posteriorly, resulting in almost trilobate appearance (fig. 54); spermathecae relatively short, compact (fig. 55).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: San Diego Co.: ‘‘ La Cresta’’, probably La Costa (and mapped as such), June 8, 1947 (W. Pearce, AMNH) , 1?; La Jolla, Sept. 9– Nov., 1999, in house (M. Metzger, UCR) , 6/; La Mesa, Apr. 18, 1970 (R. Sparhawk, WRIK) , 1?; Lower Otay County Park , Aug. 5, 1976, under rock (D. Faulkner, WRIK) , 1/; Miramar Naval Air Station , Aug. 23– Sept. 1, 1995, pitfalls, coastal sage scrub (R. Redak, CAS, WRIK) , 2?, 3/; Point Loma , 1020 Devonshire Drive, July 12, 1975, in house (S. Johnson, WRIK) , 1/, Aug. 1, 1975, in house (S. Johnson, WRIK) , 1?, Mar. 5–May 27, 1977, in house (S. Johnson, WRIK, CAS) , 2?; San Diego , near San Diego State Univ., no date ( WRIK) , 2/, no date, pitfall (H. Moore, WRIK) , 1?, May 1969 (B. Kaston, WRIK) , 8/, Sept. 6, 1969, in house (B. Kaston, WRIK) , 1?, Aug.–Oct. 1970 –1971, pitfalls (B. Kaston, WRIK, CAS) , 12/, Sept. 26, 1970, in house (B. Kaston, CAS) , 1/, Oct. 4, 1971, in house ( WRIK) , 2/, Apr. 7, 1972, in house (B. Kaston, WRIK) , 1?, Aug. 4, 1977, in house ( WRIK) , 1?; Torrey Pines State Reserve , Sept. 30, 1996, pitfall (J. King, UCR) , 1/.

DISTRIBUTION: Known only from southwestern San Diego County, California (map 3).

Socalchemmis prenticei , new species

Figures 56–60 ; map 3

TYPE: Male holotype taken in pitfall trap in coastal sage scrub on Marine Corps Base Camp Pendleton, San Diego Co., California (May 1996; T. Prentice), deposited in AMNH courtesy of Mr. Prentice and Dr. R. Redak of the University of California, Riverside.

ETYMOLOGY: The specific name is a pa­ tronym in honor of the collector of the type and many other important Socalchemmis specimens.

DIAGNOSIS: Males can be recognized by the elongated embolar base, which is sharply distinguished from the relatively short embolar tip by an oblique constriction (figs. 56– 58), females by the short, wide, anteriorly situated spermathecal lobes and medially fused spermathecal receptacles (fig. 60).

MALE: Total length 7.2. Coloration as in S. dolichopus . Leg spination: femora: I p0­1­1; II p1­1­1; IV r0­0­2; tibia I d0­0­1; metatarsi: I r1­1­0; II p1­1­0. Embolar base long, narrow, relatively straight, separated from tip by narrow, obliquely directed excavation, ventral prong of retrolateral tibial apophysis short, greatly widened toward tip (figs. 56– 58).

FEMALE: Total length 8.0. Coloration as in S. dolichopus . Leg spination: femora: I p0­ 1­1, r0­2­1; IV p1­1­1, r0­0­1; tibia I d0­0­ 1; metatarsi I, II p0­0­0, r0­0­0. Epigynal septum not expanded medially, smoothly narrowed posteriorly (fig. 59); spermathecae fused across midline by membranous duct, spermathecal lobes relatively short, wide (fig. 60).

OTHER MATERIAL EXAMINED: CALIFOR­ NIA: Riverside Co.: Wildomar , Clinton Keith exit, 3 mi into foothills, Nov. 23, 1996, in house (R. Cole, UCR) , 1/. San Diego Co.: Marine Corps Base Camp Pendleton , May 15–22, 1995, pitfall, coastal sage scrub (R. Redak, CAS) , 1/, Aug. 14–21, 1995, pitfall, coastal sage scrub (R. Redak, UCR) , 1?, Aug. 31, 1995 (T. Prentice, CAS) , 1?.

DISTRIBUTION: Known only from northwestern San Diego County, and adjacent southwestern Riverside County, California (map 3).

Socalchemmis rothi , new species

Figures 61–63 ; map 3

TYPE: Male holotype taken in an oak grove

40 mi S of Tecate, Baja California Norte , Mexico (Nov. 10, 1957; V. Roth), deposited in AMNH .

ETYMOLOGY: The specific name is a patronym in honor of the collector of the holotype.

DIAGNOSIS: Males resemble those of S. miramar in having a strongly protuberant embolar base, but differ in having the tip of the protuberance wider and in having the ventral prong of the retrolateral tibial apophysis much less expanded at its tip (fig. 63).

MALE: Total length 9.1. Coloration as in S. cajalco . Leg spination (legs I missing): femora: II p1­1­1; IV r0­0­2; metatarsi II p1­1­0. Embolar base with large, rectangular protrusion, ventral prong of retrolateral tibial apophysis not widened distally (figs. 61–63).

FEMALE: Unknown.

OTHER MATERIAL EXAMINED: None.

DISTRIBUTION: Known only from Baja California Norte, Mexico (map 3).

Socalchemmis williamsi , new species

Figures 66–68 ; map 3

TYPE: Male holotype taken 4 mi W of Santo Tomás, Baja California Norte , Mexico (July 8, 1973; S. Williams, K. Blair), deposited in CAS .

ETYMOLOGY: The specific name is a patronym in honor of one of the collectors of the holotype.

DIAGNOSIS: Males resemble those of S. catavina but have a narrower embolar base and a narrower ventral prong of the retrolateral tibial apophysis (figs. 66–68).

MALE: Total length 8.0. Coloration as in S. cajalco . Leg spination: femora: I p0­1­1; II p1­1­1; IV r0­0­2; metatarsi: I r1­1­0; II p1­ 1­0. Embolar base relatively narrow, scarcely wider than embolar tip, ventral prong of retrolateral tibial apophysis short, narrow, bent (figs. 66–68).

FEMALE: Unknown.

OTHER MATERIAL EXAMINED: None.

DISTRIBUTION: Known only from Baja California Norte, Mexico (map 3).

Socalchemmis catavina , new species

Figures 69–73 ; map 3

TYPE: Male holotype taken beating palm thatch in palm canyon at Cataviña , Baja California Norte, Mexico (Jan. 15, 1981, matured Mar. 21, 1982; D. Ubick), deposited in CAS .

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: Males resemble those of S. williamsi but have a wider embolar base and a wider ventral prong of the retrolateral tibial apophysis (figs. 66–68); females have a distinctively goblet­shaped epigynal septum and sinuous posterior epigynal margins (fig. 72).

MALE: Total length 7.7. Coloration as in S. cajalco . Leg spination: femora: I p0­1­1; IV r0­0­2; metatarsi: I r1­1­0; II p1­1­0. Embolar base wider than embolar tip, ventral prong of retrolateral tibial apophysis relatively short, wide, not expanded distally (figs. 66–71).

FEMALE: Total length 10.5. Coloration as in S. cajalco . Leg spination: femora: I p0­1­ 1; IV r0­0­2; tibiae I, II d0­0­0; metatarsi: I p0­0­0, r0­0­0; II p1­0­0, r0­0­0. Epigynal septum relatively wide anteriorly, greatly narrowed posteriorly, appearing gobletshaped, posterior epigynal margins sinuous (fig. 72); spermathecae relatively wide (fig. 73).

OTHER MATERIAL EXAMINED: MEXICO: Baja California Norte: Sierra San Pedro Mártir , 5 mi SW La Corona gate, Aug. 20, 1978, elev. 6000 ft (M. Bentzien, CAS), 1 /.

DISTRIBUTION: Known only from Baja California Norte, Mexico (map 3).

Figures

Figs. 6–10. Socalchemmis gertschi, new species. 6. Left male palp, prolateral view. 7. Same, ventral view. 8. Same, retrolateral view. 9. Epigynum, ventral view. 10. Same, dorsal view.

Figs. 11–15. Socalchemmis bixleri, new species. 11. Left male palp, prolateral view. 12. Same, ventral view. 13. Same, retrolateral view. 14. Epigynum, ventral view. 15. Same, dorsal view.

Figs. 16–20. Socalchemmis kastoni, new species. 16. Left male palp, prolateral view. 17. Same, ventral view. 18. Same, retrolateral view. 19. Epigynum, ventral view. 20. Same, dorsal view.

Figs. 21–25. Socalchemmis shantzi, new species. 21. Left male palp, prolateral view. 22. Same, ventral view. 23. Same, retrolateral view. 24. Epigynum, ventral view. 25. Same, dorsal view.

Figs. 61–65. 61–63. Socalchemmis rothi, new species. 64, 65. Socalchemmis cruz, new species. 61. Left male palp, prolateral view. 62. Same, ventral view. 63. Same, retrolateral view. 64. Epigynum, ventral view. 65. Same, dorsal view.

Figs. 26–30. Socalchemmis monterey, new species. 26. Left male palp, prolateral view. 27. Same, ventral view. 28. Same, retrolateral view. 29. Epigynum, ventral view. 30. Same, dorsal view.

Figs. 31–35. Socalchemmis icenoglei, new species. 31. Left male palp, prolateral view. 32. Same, ventral view. 33. Same, retrolateral view. 34. Epigynum, ventral view. 35. Same, dorsal view.

Figs. 36–40. Socalchemmis cajalco, new species. 36. Left male palp, prolateral view. 37. Same, ventral view. 38. Same, retrolateral view. 39. Epigynum, ventral view. 40. Same, dorsal view.

Figs. 41–45. Socalchemmis palomar, new species. 41. Left male palp, prolateral view. 42. Same, ventral view. 43. Same, retrolateral view. 44. Epigynum, ventral view. 45. Same, dorsal view.

Figs. 46–50. Socalchemmis idyllwild, new species. 46. Left male palp, prolateral view. 47. Same, ventral view. 48. Same, retrolateral view. 49. Epigynum, ventral view. 50. Same, dorsal view.

Figs. 51–55. Socalchemmis miramar, new species. 51. Left male palp, prolateral view. 52. Same, ventral view. 53. Same, retrolateral view. 54. Epigynum, ventral view. 55. Same, dorsal view.

Figs. 56–60. Socalchemmis prenticei, new species. 56. Left male palp, prolateral view. 57. Same, ventral view. 58. Same, retrolateral view. 59. Epigynum, ventral view. 60. Same, dorsal view.

Figs. 66–68. Socalchemmis williamsi, new species. 66. Left male palp, prolateral view. 67. Same, ventral view. 68. Same, retrolateral view.

Figs. 69–73. Socalchemmis catavina, new species. 69. Left male palp, prolateral view. 70. Same, ventral view. 71. Same, retrolateral view. 72. Epigynum, ventral view. 73. Same, dorsal view.