Pinodytes shasta Peck & Cook, 2011

Peck, Stewart B. & Cook, Joyce, 2011, Systematics, distributions and bionomics of the Catopocerini (eyeless soil fungivore beetles) of North America (Coleoptera: Leiodidae: Catopocerinae) 3077, Zootaxa 3077 (1), pp. 1-118 : 35-36

Pinodytes shasta Peck & Cook , new species

( Figs. 24 , 224–232 )

Type material. Holotype: male ( FMHN). UNITED STATES. California: Shasta-Trinity Co. line, Buckhorn Pass , Hwy. 299, 3200’, V-25-2002, D.S. Chandler, leaf litter, tanbark oak . Paratypes (115). UNITED STATES. California: same data as holotype, 11 ( UNHC) ; Shasta Co., 11miW Whiskeytown, Hwy. 299 nr. Trail Gulch , 14.III.2001, 1900’, D.S. Chandler, madrone leaf litter, 8 ( UNHC) ; Shasta Co., 11miW Whiskeytown, Hwy. 299 nr. Trail Gulch , 14.III.2001, 1900’, D.S. Chandler, sift bigleaf maple litter, 1 ( UNHC) ; Shasta Co., 4miSW Platina , 13.III.2000, 3100’, D.S. Chandler, sift buckeye litter, 2 ( UNHC) ; Shasta Co., Buckhorn Summit , 15.IV.1981, T.R. Haig, Ber. oak duff, 17 ( CSCA) ; Shasta Co., Buckhorn Summit , 24.IV.1985, T.R. Haig, Ber. pine duff, 3 ( CSCA) ; Shasta Co., Buckhorn Summit , 9.V.1982, T.R. Haig, Ber. oak duff, 8 ( CSCA) ; Shasta Co., Buckhorn Summit, Hwy. 299, 14.III.2001, 3200’, D.S. Chandler, maple & tanbark oak leaf litter, 2 ( UNHC) ; Shasta Co., Buckhorn Summit, Hwy. 299, 14.III.2001, 3200’, D.S. Chandler, Douglas fir litter, 2 ( UNHC) ; Shasta Co., Zachary Gulch, 6miSW Platina , 13.III.2000, 2200’, D.S. Chandler, sift maple & live oak leaf litter, 7 ( UNHC) ; Shasta Co., Zachary Gulch, 6miSW Platina , 13.III.2000, 2200’, D.S. Chandler, sift big leaf maple litter by stream, 1 ( UNHC) ; Shasta Co., Zachary Gulch, 6miSW Platina , 13.III.2000, 2200’, D.S. Chandler, sift live oak leaf litter, 9 ( UNHC) ; Shasta-Trinity Co. line, Buckhorn Pass, Hwy. 299, 25.V.2002, 3200’, D.S. Chandler, sift Douglas fir leaf litter, 5 ( UNHC) ; Shasta-Trinity Co. line, Buckhorn Pass, Hwy. 299, 25.V.2002, 3200’, D.S. Chandler, sift mixed forest litter, 3 ( UNHC) ; Tehama Co., 0.5miS Paynes Ck., Plum Ck. Rd. , 12.XI.1996, 1950’, D.S. Chandler, sift manzanita & Cercis leaf litter, 1 ( UNHC) ; Tehama Co., 3miSE Paynes Ck., Plum Ck. Rd. , 16.III.2000, 2700’, D.S. Chandler, sift digger pine logs, 2 ( UNHC) ; Tehama Co., 4miSW Platina , 3.XII.1986, 2250’, D.S. Chandler, sift Quercus durata leaf litter, 2 ( UNHC) ; Tehama Co., 6miS Paynes Ck., Oak Ck., High Trestle Rd. , 12.XI.1996, 2500’, D.S. Chandler, Quercus dumosa leaf litter, 7 ( UNHC) ; Tehama Co., Shasta-Trinity NF, 1miNE Round Mtn., Round Mtn. Ck. , 5.XII.1991, 3000’, D.S. Chandler, sift black oak litter, 2 ( UNHC) ; Tehama Co., Shasta-Trinity NF, 1miNW Round Mtn., middle fork Beegum Ck. , 5.XII.1991, D.S. Chandler, sift alder litter, 2 ( UNHC) ; Tehama-Shasta Co. line, Beegum Ck., 8miSW Platina , 10.III.2001, 2300’, D.S. Chandler, sift laurel leaf litter, 3 ( UNHC) ; Trinity Co., Del Loma , 23.I.1980, T.R. Haig, Ber. Alnus duff, 3 ( CSCA) ; Trinity Co., Del Loma , 12.III.1980, T.R. Haig, Ber. Douglas fir duff, 6 ( CSCA) ; Trinity Co., Weaverville , 15.IV.1981, T.R. Haig, Ber. oak litter, 8 ( CSCA) .

Material examined. We have examined 116 specimens.

Distribution. Specimens ( Fig. 224 ) are known from Shasta, Tehama, and Trinity counties, in northern California, on both sides of the Sacramento River valley. This is one of the few species which may occur in volcanic soils, where it occurs in southeastern Shasta County and eastern Tehama County, California.

Diagnostic description. Total length 1.14–1.30 mm; greatest width 0.60–0.70 mm. Reddish brown; oval in shape ( Fig. 24 ). Head. Finely, sparsely punctate; shining, with faint reticulate microsculpture on vertex. Eyes absent. Antenna ( Fig. 225 ) with antennomere 2 slightly longer than 3; antennomere 5 larger than 4, narrower than 6; antennomere 7 slightly longer but not wider than 8; antennomeres 9 and 10 each with a single sensory vesicle indicated apically by a protruding flange. Pronotum. Finely punctate, punctures separated by 2–4 diameters; with transverse, substriate microsculpture. Widest at base, nearly as wide as elytra; sides rounded, narrowing to apex; apical margin nearly straight, basal margin weakly sinuate laterally; apical angles broadly rounded, basal angles narrowly rounded. Elytra. Moderately finely punctate; punctures in longitudinal rows, joined by fine transverse strioles. Joined elytra widest at base, roundly narrowing to apex. Legs. Protibia ( Fig. 226 ) slender; outer margin and apical margin spinose; apical two-thirds of inner margin finely, densely spinose. Mesotibia ( Fig. 227 ) slender, straight; outer margin and apex strongly spinose, with an elongate spine at middle of outer margin. Metatibia ( Fig. 228 ) slender, straight; apical margin spinose; outer margin with larger spines at middle and before apex; apical three-fifths of inner margin spinose. Metafemur ( Fig. 228 ) slender. Male protarsomeres ( Fig. 226 ) feebly or not dilated; bearing elongate setae laterally and thin, broad, colorless phanerae ventrally. Mesotarsomeres without phanerae. Venter. Mesoventrite ( Fig. 232 ) carinate; without excavation behind transverse carina; longitudinal carina on different plane than transverse carina. Male genitalia. Median lobe of aedeagus ( Figs. 229, 230 ) elongate, broad, with flat, rounded apex. Inverted internal sac ( Fig. 230 ) with two pairs of elongate structures near middle, and basally an elongate structure with infolded spines. Parameres ( Figs. 229, 230 ) moderately slender; flat apices deflexed and not reaching apex of median lobe; each bearing two closely spaced setae before apex. Spermatheca. Elongate ( Fig. 231 ), tubular, sinuate; finely, transversely ribbed throughout entire length.

Etymology. The name shasta , a noun in apposition, refers to the occurrence of this species in Shasta Co., California.

Figures

FIGURE 224. Distributions of species in the Pinodytes pusio species group in the southwestern United States. P. sequoia, open triangles in the southern Sierra Nevada of central California. P.shasta, closed triangles in Trinity Alps mountains in north western California. P.spinus, solid square, in western foothills of the Sierra Nevada Mountains in northern California. P. tehama, open circles at the northern end of the Central Valley and on both sides of the Sacramento River, California. P. tuolumne, closed circles on the western slope of the Sierra Nevada mountains, Yosemite National Park.

FIGURES 225–232. Pinodytes shasta. 225. Male right antenna, dorsal. 226. Male right protibia and protarsus. 227. Male right mesotibia. 228. Male right metafemur and metatibia. 229. Aedeagus, lateral. 230. Aedeagus, dorsal. 231. Spermatheca. 232. Mesoventrite, lateral. Scale bar = 0.1 mm (Fig. 231), 0.3 mm (Figs. 225–230, 232).

FIGURES 19–27. Pinodytes habitus photos. 19. P.minutus, total length 1.08 mm. 20. P. monterey, total length 1.52 mm. 21. P. parvus, total length 1.22 mm. 22. P. sanjacinto, total length 1.60 mm. 23. P. sequoia, total length 2.92 mm. 24. P.shasta, total