Chlerogella cooperella 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 : 51-54

Chlerogella cooperella Engel , sp. n.

urn:lsid:zoobank.org:act:73A0CE5E-DA28-42CB-9DDE-E7E5F458B71C

Figs 80–83, 87–89, Map 3

Holotype. ♁, ECUADOR: Morona-Santiago, Cord de Cutucu , 6 k E of Macas, 1100 m, 17.v.1981 [17 May 1981], M. Cooper ( COOP).

Paratypes. ECUADOR: 1♁, same data as holotype ( COOP) ; 1♁, Morona-Santiago, Cord de Cutucu , 6 k E of Macas, 1100 m, 13.v.1981 [13 May 1981], M. Cooper ( COOP) .

Figures 80–83. Holotype male of Chlerogella cooperella sp. n. 80 Lateral habitus 8Ι Facial aspect 82 Lateral aspect of head 83 Posterior view of hind leg from metatrochanter to meta-prestarsus, depicting spine at base of metabasitarsus.

Diagnosis. The male of C. cooperella is unique among species of Chlerogella for the presence of an elongate spine at the base of the metabasitarsus and orthogonal to the length of the tarsomere (Fig. 83).

Description. Male: Total body length 7.68–7.75 mm; forewing length 5.40–5.54 mm. Head length 2.08–2.10 mm, width 1.41–1.42 mm. Clypeus beginning above lower tangent of compound eyes. Malar space 17.7% compound eye length (malar length 0.23 mm; compound eye length 1.30 mm) (Figs 81–82). Upper interorbital distance 0.65–0.67 mm; lower interorbital distance 0.34–0.36 mm. First flagellomere about as long as pedicel, about as long as wide; second flagellomere 3.4 times length of first flagellomere; ventral surfaces of second through eleventh flagellomeres densely covered in placoid sensilla, placoid fields not disrupted. 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 1.12–1.15 mm; mesoscutellum weakly convex, not bigibbous. Basal vein distad cu-a by three times vein width; 1rs-m distad 1m-cu by three times vein width; 2rs-m distad 2m-cu by six 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 anterior border. Distal hamuli arranged 2-1-2. Inner base of metabasitarsus with elongate spine orthogonal to length of metabasitarsus (Fig. 83); inner metatibial spur pectinate with eight short branches (not including apical portion of rachis). Apical margins of SIII–V entire; apical margin of SVI emarginate; terminalia as depicted in figures 87–89.

Clypeus and supraclypeal area imbricate with weak punctures separated by 1–2 times a puncture width; face with small, contiguous punctures, more widely spaced in malar space; punctures of face blending to smooth integument in ocellocular area, with punctures separated by 2–3 times a puncture width, then to imbricate on vertex with punctures separated by 1–2 times a puncture width; gena smooth with small punctures separated by 2–3 times a puncture width; postgena imbricate and impunctate. Pronotum imbricate with minute punctures separated by 1–3 times a puncture width; mesoscutum imbricate with small punctures separated by a puncture width or less, anteromedially punctures becoming faint to absent; mesoscutellum imbricate with small punctures separated by a puncture width or less; metanotum imbricate with. Preëpisternum imbricate with small punctures separated by a puncture width or less; mesepisternum imbricate with small punctures separated by 0.5–3.5 times a puncture width; metepisternum faintly imbricate. Propodeum strongly imbricate. Metasoma finely imbricate.

Mandible yellow; labrum yellow; clypeal apex yellow, remainder of clypeus and face dark, dull metallic greyish blue, gena and postgena more greyish green. Antenna dark brown except base and ventral surface of scape lighter brown. Mesosoma dark, dull metallic greyish blue above and greyish green laterally (Fig. 80); tegula dark brown. Wing membranes lightly infumate; veins dark brown. Legs dark brown except anterior legs lighter and midlegs with lighter areas posteriorly. Metasoma dark brown.

Pubescence white. Typical gender pilosity except postgena with some elongate, sinuate setae, such setae with short apical branches. Apical margin of SIII without fringe; SIV with diffuse apicolateral areas of long, white setae; SV laterally with diffuse areas of long, inwardly-curved setae.

Female: Unknown. Etymology. The specific epithet is the diminutive of a patronym honoring Martin Cooper, Wiltshire, UK, collector of these and numerous other fine bees from the Neotropical Region.