Colletes dubitatus NOSKIEWICZ 1936

Kuhlmann, Michael & Proshchalykin, Maxim Yu., 2013, The bees of the genus Colletes LATREILLE 1802 of Mongolia (Hymenoptera, Apoidea: Colletidae), Beiträge Zur Entomologie = Contributions to Entomology 63 (1), pp. 255-269 : 257

Colletes dubitatus NOSKIEWICZ 1936

Material examined:

(1 , 4 ): Bayan-Khongor Aimag: 1 , 3 , Ekhin- Gool Oasis (E99°81' N42°31'), 11-14.VIII.1969, MK ( ZISP / RCMK) ; Khovd Aimag: 1, 12 km S Altaj (E92°22' N45°83'), 22.VII.1970, IK ( ZISP) .

The female of C. dubitatus is here described for the first time. The single female was found with three conspecific males so there is no doubt about its identity.

Diagnosis:

Colletes dubitatus is morphologically very similar to the other four species (five including the unknown female of C. issykkuli KUHLMANN ) of this group. The most noticeable character of this species separating it from its relatives are the very broad apical metasomal tergal hair bands that are much broader than the hairless disc of the

respective terga ( Fig. 4c ). In C. kozlovi FRIESE the hairless discs of the metasomal terga are about as broad as the apical hair bands and in C. annejohnae KUHLMANN , C. mixtus RADOSZKOWSKI and C. stachi NOSKIEWICZ the hairless discs are much broader than the apical hair bands.

Description:

Female. Bl = 8.5 mm. Head. Head wider than long. Integument black except mandible dark reddish-brown. Face including clypeus densely covered with long, yellowishwhite, erect hairs ( Fig. 4b ). Clypeus convex without a longitudinal median depression, supraclypeal area convex in profile. Clypeus very finely and densely punctate; surface between punctures shiny ( Fig. 4b ). Malar area medially very short, almost linear, finely striate. Antenna black, ventrally dark brown ( Fig. 4b ).

Mesosoma. Integument black. Mesoscutal disc between punctures smooth and shiny; disc sparsely punctate (i = 3.0–4.0d). Scutellum anteriorly sparsely punctate with more dense punctation apically, surface smooth and shiny. Mesoscutum, scutellum, metanotum, mesepisternum and propodeum densely covered with long yellowish-white erect hairs ( Fig. 4a ). Wings. Slightly yellowish-brown; wing venation and stigma yellowishbrown. Legs. Integument black to dark reddish-brown. Vestiture whitish, scopa white. Metasoma. Integument black except apical margins of T yellowish to brownish translucent. T 1 in its anterior half densely covered with short appressed hairs leaving a strip of the disc hairless that is narrower than the width of the apical tergal hair band ( Fig. 4c ); T1 sparsely covered from the front to the disc with long, erect white hairs. T2 – T5 with broad basal and apical hair bands, hairless tergal discs narrower than the width of the apical tergal hair bands ( Figs 4a, c ). Terga very densely and very finely punctate (i <d) ( Fig. 4c ).

Distribution in Mongolia:

*Bayan-Khongor Aimag, * Khovd Aimag ( Fig. 2 ).

General distribution:

Kazakhstan, Turkmenistan, Tajikistan, Uzbekistan, Mongolia.

Figures

Fig. 4: Colletes dubitatus sp. n. . a) Specimen in lateral view, b) head, c) metasomal terga 1 and 2. Scale

Fig. 2: Distribution of Colletes alini, C. chengtehensis, C. cinerascens, C. conradti, C. cunicularius, C. dubitatus, C. ebmeri, C. floralis, C. fulvicornis, C. impunctatus, C. inexpectatus, C. jankowskyi, C. kaszabi, C. kozlovi, C. ravulus, C. reinigi, C. roborovskyi, C. sidemii, C. wacki and C. wahrmani in Mongolia. White symbols: previous records. Filled symbols: New records.