Colletes chusmiza Rojas & Toro, 1993

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 : 34-37

Colletes chusmiza Rojas & Toro, 1993

( Figs. 13A–F )

Colletes chusmiza Rojas & Toro, 1993: 83 ; Toro 1999: 27; Moure et al. 2007: 680; Montalva & Ruz 2010: 21; Ascher & Pickering 2017.

Holotype ♂ (examined). {AMNH}.

Diagnosis. The combination of clypeal mid-longitudinal area carinate, mesosomal pubescence black, and metasoma metallic blue is sufficient to differentiate C. chusmiza from all Chilean species of Colletes , except C. vicugnensis . However, their females (the male C. vicugnensis is unknown) can be differentiated by the facial pubescence with off-white and black hairs intermixed in C. chusmiza (facial pubescence entirely black in C. vicugnensis ); ventral surface of F2–F8, mid and hind tibiae pale-orange in C. chusmiza (ventral surface of F2–F8, mid and hind tibiae black in C. vicugnensis ); and comparatively shorter hind basitarsus, ~2.5x longer than broad, in C. chusmiza (hind basitarsus ~ 3x longer than broad in C. vicugnensis ).

Redescription. FEMALE ( Figs. 13A, 13C, 13E ): Dimensions (mm): Approximate body length 9.1–9.5; head width 3.4–3.5; head length 2.5–2.6; intertegular distance 2.5–2.7; forewing length 6.9–7.1.

Colouration: Black except metallic dark-blue on metasomal terga (except pale-brown on marginal zones). Metallic dark-green on mesoscutum. Pale-orange on distal ring of front and mid femora, distal 1/4 of dorsal surface of front tibia, tarsi, mid tibia (except proximal 2/3 of dorsal surface and proximal half of posterior surface black), tibial spurs, ventral surface and distal 2/3 of dorsal surface of posterior femur, hind tibia (except posterior surface black), distal half of tarsal claws. Dark-orange on ventral surface of F2–F8. Dark-brown on tegula, wing veins, stigma, metasomal sterna (except marginal zones of S1–S5 pale-brown). Reddish-brown marked on distal 1/3 of mandible. Pale-yellow on proximal half of tarsal claws.

Structure: Labrum medially flat and without ridges. Clypeal mid-longitudinal area with a strong, complete carina (except absent for upper 1/5); adjacent area declivous. Malar area ~1.5x as long as basal depth of mandible (31:21). F1 ~1.7x as long as its apical width (49:29). UID:LID (75:73). Genal area flat behind upper summit of compound eyes in lateral view. Dorsolateral angle of pronotum triangular acute. Horizontal surface of metapostnotum about half as long as metanotum (22:41); metapostnotal pits well-delimited; posterior transverse carina sinuous and broadly interrupted medially. Posteromedial surface of front coxa without spine. Posterior hind tibial spur ciliate. Hind basitarsus ~2.5x longer than broad (58:23). Outer rami of hind tarsal claws 2.75x as long as inner rami (22:8). Posterolateral area of S6 flat and lacking carina; marginal zone not depressed.

Pubescence: Black, plumose, erect, long on lateral slopes of clypeus and supraclypeal area, interantennal and paraocular areas, scutellum, metanotum, mesepisternum, central area of lateral surface of propodeum, posteroventral surface of front femur, anteroventral surface of mid and hind trochanters, ventral margin of mid femur; such hairs moderately long on metepisternum, ventral surface of mid and hind coxae; very long on upper margin of lateral surface of propodeum. Frontal, genal and vertexal areas and mesoscutum with mixed off-white and black, plumose, erect, long hairs; such hairs moderately short on pronotal lobe. Black, erect, moderately short setae on ventral surface of front trochanter, disc of T3, S3–S6; such hairs moderately long on mandible (except fulvous), posterior surface of front tibia and basitarsus, dorsal surface of mid and hind tibiae and basitarsi, T4 laterally, disc of T5; long on T5 laterally; very long on posterior margin of mid and hind basitarsi. Pale-orange, suberect, thick setae on ventral surface of mid and hind tarsi; thickest towards distal margin. Pale-orange, suberect, very long hairs, which are branched only apically on anterior surface of hind femur and tibia. S1–S2 with mixed moderately short hairs, which are branched only apically, and long, plumose hairs.

Surface sculpture: Clypeus longitudinally striate adjacently to mid-longitudinal carina and lower margin; flat area with very sparse moderately coarse punctures. Malar area densely and moderately coarsely punctate on upper 3/4; substrigulate on lower 1/4. Supraclypeal area imbricate but somewhat shiny. Paraocular area punctures crowded and moderately fine; interspaces shiny. Frontal area densely and moderately coarsely punctate; interspaces imbricate and dull. Vertexal area finely and moderately coarsely punctate (denser close adjacently to lateral ocellus); interspaces smooth and shiny. Mesoscutum, scutellum, metanotum densely and moderately coarsely punctate (except sparsely punctate on mesoscutal mid-posterior area); interspaces smooth on mesoscutum, imbricate on scutellum, rugulose on metanotum. Mesepisternum moderately densely and moderately coarsely punctate; interspaces imbricate. Metepisternum rugulose above; obliquely striate medially; imbricate below. Lateral surface of propodeum imbricate. Upper area of vertical surface of metapostnotum smooth medially. T1 finely and moderately densely punctate; interspaces imbricate. T2–T5 finely and densely punctate; interspaces rugulose on discs, imbricate on marginal zones. Metasomal sterna finely and moderately densely punctate; interspaces imbricate.

MALE ( Figs. 13B, 13D, 13F ). As in female, except for usual secondary sexual characteristics and as follows:

Dimensions (mm): Approximate body length 8.9–9.2; head width 3.2–3.4; head length 2.3–2.4; intertegular distance 2.3–2.5; forewing length 6.7–7.1.

Colouration: Proximal half of ventral surface of F9 dark-orange. Mesoscutum black. Hind femur mostly black (except distal ring pale-orange).

Structure: Clypeal mid-longitudinal area with a weak carina on lower half. Malar area ~1.8x as long as basal depth of mandible (58:32). F1 1.25x as long as its apical width (40:32). UID:LID (74:65). Genal area concave behind upper summit of compound eyes in lateral view. Dorsolateral angle of pronotum rounded. Horizontal surface of metapostnotum 0.45x as long as metanotum (18:40); posterior transverse carina sinuous and narrowly interrupted medially. Hind basitarsus ~2.1x longer than broad (58:27). Outer rami of hind tarsal claws 2.25x as long as inner rami (18:8). S7, S8 and genital capsule as in Figs. 14A, 14B, 14C , respectively.

Pubescence: Off-white on lateral slopes of clypeus and supraclypeal area, interantennal area. Off-white and black hairs intermixed on scutellum, metanotum, mesepisternum, metepisternum, legs, T1, S1. Setae on dorsal surface of mid and hind tibiae and tarsi pale-yellow. S1–S2 with plumose hairs only. S3–S6 with minute setae.

Surface sculpture: Supraclypeal and frontal areas punctures crowded. Vertexal area densely punctate. Mesoscutal anterior 1/3 sparsely punctate. Metepisternum rugulose below. T1 densely and moderately finely punctate; interspaces rugulose. S2 and mid-longitudinal area of S3–S5 sparsely punctate.

Material studied. Primary type specimen: Holotype ♂—“HOLO; TIPO”. “I Region; Chusmiza; 15-x-1981 ”. “ Colletes ; chusmiza n.sp; 1993”. “AMNH_IZC 00324328”. {AMNH}.

Secondary type specimens: Paratypes ♀♀ and ♂♂— CHILE — Region I: Chusmiza, (-19.682, -69.188), 3419m, 15/x/1981, [V.Cabezas], 1♀, { PUCV}; idem, except [J. Vial], 1♀ 1♂ ; idem, except [F.Rodriguez], 1♂; idem, except [H.Toro], 1♀, {AMNH}; idem, except [V.Cabezas], 1♂, {AMNH}; idem, except [O.Martinez], 1♂, {AMNH}; idem, except [E.Tosti-Croce], 1♂, {AMNH}; idem, except [O.Martinez], 1♀, {KUNHM}.

Additional specimens: CHILE — Region I: Highway 687 km 83, (-20.299, -69.057), 4/xi/2013, [S.Monckton], 1♀ 1♂, { PCYU}.

Range. Chile (Region I). See also Fig. 10C .

Biogeographic distribution. South American transition zone: Atacama province. Northern Chilean species distributed in the summer rainfall area at altitudes above 3,000m a.s.l.

DNA barcode. Available. BOLD: ACW1705 (1♀1♂). Distance from the nearest neighbours: 3.53–3.69% ( C. fulvipes ) and 6.1–6.12% ( C. flaminii ).

Floral hosts. Leguminosae— Adesmia sp. ( Toro 1999).

Comments. Rare species that seems to be found only at very high altitudes in Region I.

Figures

FIGURE 10. Geographic distribution by Colletes species. (A) C. atripes and C. patagonicus; (B) C. rutilans and C. bicolor; (C) C. chusmiza and C. flavipilosus n. sp. The records of C. rutilans out of Chile have not been plotted. Scale bars approximately 300 km.

FIGURE 13. Colletes chusmiza Rojas & Toro, 1993. 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.

FIGURE 14. Dorsal view of the male terminalia of C. chusmiza. (A) S7; (B) S8; (C) genital capsule.Scale bars = 1mm.