Chlerogella dolichorhina Engel, 2010

Engel, Michael, 2010, Revision of the Bee Genus Chlerogella (Hymenoptera, Halictidae), Part II: South American Species and Generic Diagnosis, ZooKeys 47 (47), pp. 1-100 : 34-36

Chlerogella dolichorhina Engel , sp. n.

urn:lsid:zoobank.org:act:4403F04E-199C-4732-BBDD-3C2898F214B1

Figs 45–47, Map 3

Holotype. ♀, ECUADOR: Napo, Chaco, 11 March 1983, Masner and Sharkey ( SEMC).

Paratype. ECUADOR: 1♀, Napo, Chaco, 11.iii.1983 [11 March 1983], Masner & Sharkey ( PMAE).

Diagnosis. The female of C. dolichorhina is superficially most similar to C. agaylei but can be distinguished by the strongly and coarsely imbricate mesepisternum and the more dull and non-shining blue coloration, with only faint purple highlights (Figs. 45–47).

Description. Female: Total body length 8.85 mm; forewing length 6.53 mm. Head length 2.71 mm, width 1.69 mm. Clypeus beginning below lower tangent of compound eyes. Malar space 45.9% compound eye length (malar length 0.68 mm; compound eye length 1.48 mm) (Figs 46–47). Upper interorbital distance 0.83 mm; lower interorbital distance 0.57 mm. Upper portion of pronotum medially depressed, not elongate, medially less than 0.25 times ocellar diameter in length; ventral portion of preëpisternal sulcus not broad, similar to scrobal sulcus and upper portion of preëpisternal sulcus; intertegular distance 1.3 mm; mesoscutellum weakly convex, not bigibbous. Basal vein distad cu-a by two times vein width; 1rs-m distad 1m-cu by three times vein width; 2rs-m distad 2m-cu by nine times vein width, 2rs-m relatively straight; first submarginal cell longer than combined lengths of second and third submarginal cells; second submarginal cell slightly narrowed anteriorly, anterior border of second submarginal cell along Rs about as along as that of third submarginal cell; posterior border of third submarginal cell slightly more than two times longer than an-

Figures 45–47. Holotype female of Chlerogella dolichorhina sp. n. 45 Lateral habitus 46 Facial aspect 35 Lateral aspect of head.

terior border. Distal hamuli arranged 2-1-2. Inner metatibial spur with seven branches (not including apical portion of rachis).

Clypeus and supraclypeal area imbricate with weak punctures separated by 0.5–1 times a puncture width; face with small, contiguous punctures, more widely spaced in malar space; punctures of face blending to finely imbricate integument in ocellocular area and vertex, with punctures separated by 0.5–2 times a puncture width; gena finely imbricate with small punctures separated by 1–3 times a puncture width; postgena imbricate and impunctate. Pronotum imbricate with minute punctures separated by 1–3 times a puncture width; mesoscutum imbricate with punctures separated by a puncture width or less on lateral thirds and posteriorly, anteromedially punctures becoming exceedingly faint to absent; mesoscutellum imbricate with small punctures separated by a puncture width or less; metanotum imbricate with minute punctures separated by a puncture width or less. Preëpisternum finely imbricate with small punctures separated by 1–3 times a puncture width; mesepisternum strongly and coarsely, relatively dull, with coarse, shallow punctures separated by 1.5–4 times a puncture width; metepisternum faintly imbricate. Propodeum strongly imbricate. Metasoma finely imbricate.

Mandible dark brown except reddish at apex; labrum dark brown; clypeal apex black, remainder of clypeus and head dark metallic azurite blue, with weak purple highlights. Antenna dark brown. Mesosoma dark metallic azurite blue, with weak purple highlights (Fig. 45); tegula dark brown. Wing membranes lightly infumate; veins dark brown. Legs dark brown. Metasoma dark brown.

Pubescence white except intermingled with dark fuscous setae on metatibia and with dark fuscous setae predominant on tarsi, apicalmost metasomal segments, and pro- and mesotibiae.

Male: Unknown.

Etymology. The specific epithet is a combination of the Greek terms dolichos, meaning “long”, and rhinos, meaning “nose”.