Hemicotelles, TORO & CABEZAS, 1977

Ferrari, Rafael R & Packer, Laurence, 2021, Morphological phylogeny and review of the generic classification of Colletinae (Hymenoptera: Colletidae), Zoological Journal of the Linnean Society 193 (1), pp. 199-216 : 210-211

HEMICOTELLES TORO & CABEZAS, 1977

( FIG. 1A, B )

Type species: Lonchopria ruizii Herbst, 1923 .

Diagnosis: Females of Hemicotelles can be easily differentiated from those of the other genera of Colletinae by T6 with a posteromedial longitudinal ridge (this study; Supporting Information, Fig. S11B) [T6 with a posteromedial protrusion that can be either weak and rounded (Supporting Information, Fig. S11C) or strong and subtriangular (Supporting Information, Fig. S11D) in Xanthocotelles , and T6 with no modification (Supporting Information, Fig. S9A–C) in Colletes and Mourecotelles ]. Males of Hemicotelles are diagnosed through the following combination of characteristics: apical mandibular tooth much longer than preapical tooth (this study; Supporting Information, Fig. S15A), legs dark-brown to black (modified from: Toro & Cabezas, 1978; see also Fig. 1A, B ) and horizontal surface of T1 much shorter than T2 (modified from: Michener, 1989; see also Supporting Information, Fig. S12C) [apical tooth only slightly longer than preapical one (Supporting Information, Fig. S15B) in Mourecotelles , legs pale-yellow to darkorange ( Fig. 1E, F ) in Xanthocotelles and horizontal surface of T1 subequal in length to T2 (Supporting Information, Fig. S12D) in Colletes ]. Hemicotelles can be further distinguished from Colletes by forewing with a straight second recurrent vein in both sexes (modified from: Toro & Cabezas, 1977; see also Fig. 3B ) [forewing with second recurrent vein either sigmoidal ( Fig. 3D ) or slightly arcuate outwardly ( Fig. 3C ) in Colletes ]; and from both Mourecotelles and Xanthocotelles by subhorizontal and vertical surfaces of the metapostnotum separated from each other by a transverse carina, albeit broadly interrupted medially in both sexes (modified from: Michener, 1989; see also Fig. 4D ) [metapostnotum without transverse carina ( Fig. 4C ) in Mourecotelles and Xanthocotelles ].

Additional species: Hemicotelles magallanes Toro & Cabezas, 1977 .

Comments: Hemicotelles is the least diverse genus of Colletinae with only two described species – H. magallanes (southern Chile and Argentina) and H. ruizii (central Chile).

Figures

Figure 1. Lateral habitus of some Colletinae showing some of their diversity. A–P, females, Hemicotelles magallanes (A), H. ruizii (B), Mourecotelles mixtus (C), Mourecotelles sp.1 (D), Xanthocotelles atacama (E), X. fritzi (F), Colletes cyanescens (G), C. cyaniventris (H), C. fulvipes (I), C. halophilus (J), C. nigritulus (K), C. petropolitanus (L), C. rugicollis (M), C. slevini (N), C. solidaginis (O) and C. zuluensis (P). Scale bars = 1 mm.

Figure 3. Diagnostic features of Colletinae. Numbers shown in red indicate derived character states. A–D, lateral view of male forewing, Hexantheda entrerriana (A), Hemicotelles ruizii (B), C. albomaculatus (C) and C. rufipes (D); E, F, dorsal view of female metasomal apex, C. gilvus (E) and Bicolletes rufiventris (F). Scale bars = 1 mm.

Figure 4. Diagnostic features of Colletinae. Numbers shown in red indicate derived character states. A, B, Lateral view of male propodeum, Trichocolletes dowerinensis (A) and Colletes gilvus (B); C–E, posterior view of male metapostnotum, Xanthocotelles atacama (C), Hemicotelles magallanes (D) and C. atripes (E); F, ventral view of male S7 of Mourecotelles sp.1. Scale bars = 1 mm.