Colletes coquimbensis Ferrari, 2017

Ferrari, Rafael R., 2017, Taxonomic revision of the species of Colletes Latreille, 1802 (Hymenoptera: Colletidae: Colletinae) found in Chile, Zootaxa 4364 (1), pp. 1-137 : 40-43

Colletes coquimbensis Ferrari , new species

( Figs. 17A–F )

Diagnosis. Females are diagnosable by the combination of clypeus with apicomedial ridge, mesoscutal pubescence with off-white and black hairs intermixed, and posterior hind tibial spur pectinate. Males can be recognized by the combination of malar area ~1.5x as long as basal depth of mandible, paraocular pubescence with off-white and black hairs intermixed, and marginal zones of T2–T5 covered with pale-yellow appressed hairs.

Colletes coquimbensis n. sp. is most similar to C. toroi n. sp. The females, however, can be distinguished from each other by mesoscutum with off-white and black hairs intermixed in C. coquimbensis n. sp. (mesoscutal pubescence entirely pale-yellow in C. toroi n. sp.); and the labral median area depressed and margined by ridges in C. coquimbensis n. sp. (labral median area swollen in C. toroi n. sp.). The male C. coquimbensis n. sp. can be readily differentiated from the male C. toroi n. sp. due to its comparatively shorter malar area, ~1.5x as long as basal depth of mandible (malar area ~ 2x as long as basal depth of mandible in C. toroi n. sp.).

Description. FEMALE ( Figs. 17A, 17C, 17E ): Dimensions (mm): Approximate body length 9.3; head width 3.3; head length 2.5; intertegular distance 2.7; forewing length 6.9.

Colouration: Black except dark-brown on tegula, wing veins (except vein R of forewing black), stigma, dorsal surface of tarsomeres 4–5, marginal zones of T1–T5, ventrally reflexed lateral areas of T1. Pale-brown on proximal half of tarsal claws. Pale-yellow on tibial spurs, marginal zones of S1–S5. Reddish-brown on distal half of tarsal claws; marked on distal half of mandible.

Structure: Labrum medially convex; convexity not margined by ridges. Clypeal mid-longitudinal area neither depressed nor carinate; adjacent lateral area convex; apicomedial ridge present. Malar area ~0.6x as long as basal depth of mandible (23:35). F1 ~1.3x as long as its apical width (31:24). UID:LID (70:65). Genal area flat behind upper summit of compound eyes in lateral view. Dorsolateral angle of pronotum triangular acute. Horizontal surface of metapostnotum ~0.5x as long as metanotum (19:39); metapostnotal pits well-delimited; posterior transverse carina sinuous and interrupted medially. Posteromedial surface of front coxa with short (0.4x MOD) spine. Posterior hind tibial spur pectinate. Hind basitarsus ~3.5x longer than broad (45:14). Outer rami of hind tarsal claws 2.5x as long as inner rami (15:6). Posterolateral area of S6 convex but without carina; marginal zone not depressed.

Pubescence: Off-white, plumose, erect, moderately long on vertical slopes of clypeal and supraclypeal area, pronotal lobe, metepisternum, ventral margin of mid femur; such hairs long on genal area (except moderately long and mostly suberect on upper 1/2), metanotum, mesepisternum, posteroventral surface of front trochanter and femur, ventral surface of mid and hind trochanters; very long on upper margin of lateral surface of propodeum. Mixed off-white and black, plumose, erect, moderately long hairs on paraocular, frontal and vertexal areas, mesoscutum and scutellum. Pale-yellow, erect, moderately short setae on mandible (except pale-orange), dorsal surface of mid and hind tibiae and basitarsi (except suberect on mid tibia); such hairs moderately long on posterior surface of front tibia, posterior margin of front and mid basitarsi; very long on posterior margin of hind basitarsi. Bright-yellow, suberect, thick setae on ventral surface of mid and hind tarsi; pale-orange, thickest towards distal margin. Pale-yellow, suberect, very long hairs, which are branched only apically on anterior surface of hind femur and tibia. T1–T5 covered with off-white appressed hairs; T1–T2 also with plumose, erect, long hairs (except slightly shorter on T2); T3–T5 also with pale-yellow and black, erect, moderately long setae (except setae on T3 moderately short and pale-yellow only). S2 with pale-yellow, erect, moderately short hairs, which are branched only apically. Discs of S3–S6 with pale-yellow, erect, moderately short setae restricted to posterior half (except concentrated mid-longitudinally on S6); marginal zones of S2–S5 with a band of plumose, suberect hairs.

Surface sculpture: Clypeal mid-longitudinal area densely and moderately finely punctate; adjacent convex area with very sparse punctures, longitudinally striate near depression, smooth elsewhere; lower 1/4 longitudinally striate. Malar area moderately densely and moderately finely punctate on upper 2/3; lower 1/3 substrigulate. Supraclypeal area with a few moderately fine punctures near lower margin; interspaces smooth. Paraocular area punctures crowded throughout; finely punctate above; slightly coarser below. Frontal area densely and moderately coarsely punctate; interspaces rugulose. Vertexal area minutely punctate; interspaces smooth. Mesoscutum moderately sparsely and moderately finely punctate (except sparsely punctate on mid-posterior area); interspaces smooth. Scutellum densely punctate; moderately coarsely punctate on mid 1/3; finer on posterior 1/3; interspaces smooth. Metanotum densely and moderately finely punctate. Mesepisternum densely and coarsely punctate. Metepisternum rugulose above and below; obliquely striate medially. Lateral surface of propodeum finely and sparsely punctate; interspaces rugulose. Upper area of vertical surface of metapostnotum rugose. Metasomal terga sparsely and minutely punctate (except minute punctures on T1 intermingled with fine ones); interspaces smooth throughout. Metasomal sterna moderately finely punctate; densely punctate posterolaterally; sparsely punctate mid-longitudinally and anteriorly; interspaces imbricate throughout.

MALE ( Figs. 17B, 17D, 17F ). As in female, except for usual secondary sexual characteristics and as follows:

Dimensions (mm): Approximate body length 8.1; head width 3.1; head length 2.5; intertegular distance 2.6; forewing length 6.8.

Colouration: Mandibular reddish-brown spot restricted to distal 1/3. Wing veins pale-brown (except vein R of forewing black).

Structure: Clypeal mid-longitudinal area evenly broadly depressed; depression shallow for upper 2/4, deeper just below; apicomedial ridge absent. Malar area ~1.5x as long as basal depth of mandible (42:27). F1 slightly longer than its apical width (24:22). UID:LID (67:60). Genal area concave behind upper summit of compound eyes in lateral view. Dorsolateral angle of pronotum rounded. Horizontal surface of metapostnotum ~0.7x as long as metanotum (22:33); posterior transverse carina complete. Posteromedial surface of front coxa without spine. Posterior hind tibial spur ciliate. Hind basitarsus ~3.7x longer than broad (41:11). Outer rami of hind tarsal claws ~2.7x as long as inner rami (22:8). Posterolateral area of S6 flat. S7, S8 and genital capsule as in Figs. 18A, 18B, 18C , respectively.

Pubescence: Pale-yellow hairs on interantennal area intermingled with black ones. Genal pubescence evenly long and erect. Appressed hairs on metasoma restricted to marginal zones. Setae on discs of S3–S6 more evenly distributed.

Surface sculpture: Clypeal mid-longitudinal area punctures crowded. Supraclypeal punctation more evenly distributed. Paraocular area only densely punctate. Lateral surface of propodeum with rugose interspaces. Metasomal terga finely and moderately densely punctate throughout.

Type material. Holotype ♀ —“ CHILE: Region IV; La Mercedes ; IX-15-2010; L. Packer ”. “ B10006 -B12 ; Bees of Chile119”. “HOLOTYPE; Colletes coquimbensis ♀; Ferrari, new species”. { PCYU}.

Paratypes: CHILE — Region IV: 4km S of Pisco Elqui , (-30.162, -70.491), 1362m, 26/x/1992, [Rozen, Sharkov & Snyder], 8♀♀, { AMNH} . 6km S of Pisco Elqui , (-30.180, -70.485), 1464m, 30/x/1992, [J.Rozen], 3♀♀, { AMNH} . 7km S of Pisco Elqui, (-30.189, -70.483), 1471m, 8/x/1994, [ Rozen , Quinter & Ascher], 24♀♀, { AMNH}; idem, except 6/x/1994, 2♀♀. Alcohuaz, (-30.115, -70.491), 1190m, 2/xi/1986, [L.Peña], 1♀, { AMNH}. Las Mercedes, (-29.935, -70.537), 926m, 15/ix/2010, [L.Packer], 1♀, { PCYU}. Las Placetas, (-30.170, -70.599), 3115m, 14/x/2001, [Rozen, Ugarte & Espina], 4♀♀ 5♂♂, { AMNH}; idem, except 15/x/2001, 2♂♂. Near Pisco Elqui, 1/xi/2000, [J.Rozen], 5♀♀, { AMNH}; idem, except 2/xi/2000, 4♀♀; idem, except 12/xi/2000, 1♀.

Range. Chile (Region IV). See also Fig. 19A .

Biogeographic distribution. Andean region: Central Chilean sub-region (Coquimban province). Central Chilean species distributed at altitudes of 900–3200m a.s.l.

DNA barcode. Available. BOLD: AAO3472 (2♀♀2♂♂). Distance from the nearest neighbour ( C. cognatus ): 7.32–8.84%.

Floral hosts. Unknown.

Etymology. Colletes coquimbensis n. sp. is a reference to the fact that the species has so far been found only in the Chilean Region IV (Coquimbo).

Comments. All specimens available to me were collected in Region IV, which suggests that C. coquimbensis n. sp. may have a restricted distribution in Chile. The species also appears to be uncommon within its range.

According to the AMNH’s records, four female specimens caught by Rozen near Pisco Elqui (Region IV) on November 2000 were collected along with Isepeolus luctuosus ( Spinola, 1851) . As no other Colletes species was collected there on the same date, it may be sensible to consider I. luctuosus as a presumable cleptoparasite of C. coquimbensis n. sp. In fact, Claude-Joseph (1926) had associated I. luctuosus with three Colletes species: C. sulcatus (as C. araucariae ), C. cyaniventris (as C. cyanescens ) and C. lucens (as C. laticeps ). Perhaps, the specimens identified by him as C. sulcatus actually belong to the species described here as new.

Figures

FIGURE 18. Dorsal view of the male terminalia of C. coquimbensis n. sp. (A) S7; (B) S8; (C) genital capsule. Scale bars = 1mm.

FIGURE17. Colletes coquimbensis Ferrari, n. sp. Female:(A) habitus, lateral view; (C) face, frontal view; (E) habitus, dorsal view.Male:(B) habitus, lateral view; (D) face, frontalview; (F) habitus, dorsal view.Scale bars = 2mm.

FIGURE19. Geographic distribution by Colletes species.(A) C. coquimbensis n. sp. and C. longiceps; (B) C.cyanescens; (C) C.vicugnensis and C. flaminii. Scale bars approximately 300 km.