Chilicola tricarinatoides Packer

Packer, Laurence & Genaro, Julio A., 2007, Fifteen new species of Chilicola (Hymenoptera: Apoidea; Colletidae), Zootaxa 1468, pp. 1-55 : 33-34

Chilicola tricarinatoides Packer , n. sp.

( Figs.11A–C )

Diagnosis: This species can be differentiated from all other Chilicola by the form of the hind tibia and the punctures on the frons separated by somewhat less than their diameters, as opposed to being crowded and sharp edged as they are in related species. Females are unknown. Otherwise, this species is very similar to C. tricarinata from which it can be differentiated based upon the characteristics listed in the diagnosis for that species.

Description. Male: Body length 4.3mm, forewing length 3.0mm, head width 1.0mm.

Colouration: Black with following parts yellow: Labrum, mandible (except apex red), large inverted Tshaped mark on clypeus, apical half of anterior surface of scape, spot on pronotal lobe, basal spot on tegula and ventral-most portion of apical swelling of hind tibia. Following parts orange or orange-testaceous: Anterior surface of pedicel and flagellum, apical ring on foretrochanter, anterior surface of fore and mid femora except for dark basal ring; fore and midtibia except for most of outer surface, spot on apex of hind coxa, most of ventral surface of hind trochanter, oval spot on outer surface of hind femur, ventral portion of apical expanded region and narrow apical ring and externoventral margin of hind tibia. All tarsi dusky brown. Wing veins red brown. Tegula clear transparent. Apical impressed areas of metasomal terga pale amber. Metasomal sterna brown. S6 suffused with testaceous.

Surface sculpture: As for C. tricarinata except as follows: Microsculpture sparser making surface somewhat shinier except clypeus duller. Punctation somewhat denser and less regular on clypeus, supraclypeal area and lower paraocular area, i=0.5–2.5d. Frons with punctures separated by somewhat less than their diameters. Vertex rugulose. Genal area with weak striae and shallow obscure punctures. Pronotum, mesoscutum and scutellum irregularly punctate i=0.2–2d. Dorsal surface of propodeum rugoso-reticulate, lateral surface with only strong microsculpture below, dorsolateral area rugose. Mesopleuron irregularly punctate, i=1–3d. T1–T2 densely punctate i~d; punctures smaller, more irregular and shallower on more apical terga; basal depressed portions of T2–T3 transversely microstriate; apical impressed areas impunctate.

Pubescence: As in C. tricarinata except as follows: Genal beard shorter, 1.5MOD posteriorly; T1–T3 with apicolateral hair patches sparse; S2 with sparser and shorter erect pubescence <1MOD; remaining sterna lacking specialized pubescence although with subapical transverse row <0.75MOD on S3–S5.

Structure: Head ( Fig. 11A ): As in C. tricarinata except as follows: Clypeus shorter, length to breadth (38:45). Supraclypeal area less than 1.5X as long as apical width (27:20). IOC 2X OOC (34:17). Scape narrower, length to apical breadth 33:13; flagellomeres broader, length to breadth of F8 16:10. Gena longer in comparison to compound eye (20:48).

Mesosoma: As in C. tricarinata except as follows: Hind basitarsus 5X as long as greatest depth. Dorsal area of propodeum shorter, propodeum:metanotum:scutellum, 22:18:30; propodeal sulcus broader, pits clearly transverse throughout. Stigmal margin on marginal cell angularly convex.

Metasoma: Subpetiolate, T1 proportionately longer than in C. tricarinata (90:65).

Terminalia : S7 as in C. tricarinata except membranous lobe with apicolateral margin broadly rounded with longer setae and anterior laterally directed hair bearing area more extensive ( Fig. 11B ). S8 with apical process comparatively broader and shorter than in C. tricarinata , more strongly broadened towards apex ( Fig. 11C ). Genital capsule as in C. tricarinata except: gonobase with ventral process somewhat longer and penis valve with membranous lobe slightly larger.

Material studied. Holotype and eight male paratypes (one in glycerin), ARGENTINA: Chubut, 8km S. of Rada Tilly, 45°59’043S, 72°36’322W, 30m, 24.xi.2003, L. Packer. The holotype and 3 paratypes are at MACN, the remainder at PYU. One paratype bears a blue label stating: VOUCHER SPECIMEN DNA EXTRACTION E.A.B.Almeida #62.

Comments. This species was collected at the same locality as C. chubutense described above.

Figures

FIGURES 11 A – C. Chilicola tricarinatoides Packer, n. sp. Male. A. Head in frontal view. B. S 7, C. S 8. Stippling represents pale colouration.