Chlerogella terpsichore 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 : 72-76

Chlerogella terpsichore Engel , sp. n.

urn:lsid:zoobank.org:act:DBD887A9-2384-499B-8FD5-B3CDF3DCFA3F

Figs 119–125, 135–136, Map 4

Holotype. ♀, COLOMBIA: Nariño, Barbacoas , 40 m, 2.x.1990 [2 October 1990], M. Cooper ( COOP).

Figures ΙΙ9–Ι2Ι. Female of Chlerogella terpsichore sp. n. ΙΙ9 Lateral habitus Ι20 Lateral aspect of head Ι2Ι Facial aspect.

Paratypes. COLOMBIA: 4♁♁, Nariño, Barbacoas , 40 m, 1.x.1990 [1 October 1990], M. Cooper ( COOP) ; 1♀, Nariño, Barbacoas , 40 m, 2.x.1990 [2 October 1990], M. Cooper ( COOP) ; 1♀, Nariño, Barbacoas , 40 m, 3.x.1990 [3 October 1990], M. Cooper ( COOP) ; 1♁, 1♀, Nariño, Barbacoas , 40 m, 4.x.1990 [4 October 1990], M. Cooper ( COOP) .

Diagnosis. Chlerogella terpsichore is most superficially similar to C. elysia but differs in the presence of amber on the clypeus and the absence of distinct fluorescence on the mesosoma and head. In structural features, C. terpsichore is similar to C. elongaticeps from Panama in the presence of lateral processes on SIV (Fig. 125), a unique feature

Figures Ι22–Ι25. Male of Chlerogella terpsichore sp. n. Ι22 Lateral habitus Ι23 Facial aspect Ι24 Lateral aspect of head Ι25 Apical metasomal sterna.

among the South American species of the genus. The species is also similar to C. tychoi , also from Colombia, but has a shorter malar space (Figs 120–121) and different structure to the inner metatibial spur.

Description. Female: Total body length 8.22–8.30 mm; forewing length 5.07– 5.12 mm. Head length 2.35–2.36 mm, width 1.55–1.57 mm. Clypeus beginning at or minutely below lower tangent of compound eyes. Malar space 30.9–31.1% compound eye length (malar length 0.43–0.44 mm; compound eye length 1.39–1.41 mm) (Figs 120–121). Upper interorbital distance 0.77–0.78 mm; lower interorbital distance 0.51–0.53 mm. Upper portion of pronotum slightly swollen, medially about 1.25 times ocellar diameter in length; ventral portion of preëpisternal sulcus not broad, similar to scrobal sulcus and upper portion of preëpisternal sulcus; intertegular distance 1.15–1.19 mm; mesoscutellum weakly convex, not bigibbous. Basal vein distad cu-a by three times vein width; 1rs-m distad 1m-cu by five times vein width; 2rs-m distad 2m-cu by seven times vein width, 2rs-m straight; first submarginal cell longer than combined lengths of second and third submarginal cells; second submarginal cell narrowed anteriorly, anterior border of second submarginal cell along Rs about onehalf as along as that of third submarginal cell; posterior border of third submarginal cell about 1.75 times longer than anterior border. Distal hamuli arranged 2-1-2. Inner metatibial spur with five branches (not including apical portion of rachis).

Clypeus and supraclypeal area smooth with weak punctures separated by 0.5–2 times a puncture width; face with small punctures separated by a puncture width or less; similar punctures and integument in ocellocular area and vertex, punctures separated by 1–1.5 times a puncture width; gena smooth with minute punctures separated by 1–4 times a puncture width; postgena imbricate and impunctate. Pronotum faintly imbricate with minute, scattered punctures; mesoscutum smooth with small punctures separated by a puncture width or less; mesoscutellum smooth with minute punctures separated by a puncture width; metanotum faintly imbricate with minute punctures separated by 2–3 times a puncture width. Preëpisternum weakly rugulose above blending to weakly imbricate with shallow, coarse punctures separated by a puncture width or less; mesepisternum smooth, with small and shallow punctures separated by 1–3 times a puncture width; metepisternum faintly imbricate. Propodeum strongly imbricate. Metasoma finely imbricate.

Mandible amber except reddish brown at apex; labrum amber; clypeal apex and central area amber, blending to amber brown and brilliant metallic green with strong copper highlights, supraclypeal area brilliant metallic green with strong copper highlights, remainder of head brilliant metallic green with varying copper highlights, green and highlights less strong in malar space. Antenna dark brown except basal two-thirds of scape amber, pedicel and first flagellomere amber brown. Mesosoma brilliant metallic green with copper highlights except pronotal lobe amber (Fig. 119); tegula translucent amber. Wing membranes hyaline; veins brown except C and Sc+R dark brown. Legs amber. Metasoma amber.

Pubescence white and golden.

Male: As described for the female except as follows: Total body length 8.50–8.64 mm; forewing length 5.13–5.22 mm. Head length 2.37–2.41 mm, width 1.57–1.60 mm. Malar space 30.5–31.0% compound eye length (malar length 0.43–0.44 mm; compound eye length 1.41–1.42 mm) (Figs 123–124). Upper interorbital distance 0.75–0.77 mm; lower interorbital distance 0.37–0.38 mm. First flagellomere about 1.75 times longer than wide, longer than pedicel; second flagellomere two times length of first flagellomere; ventral surfaces of second through eleventh flagellomeres densely covered in placoid sensilla, placoid fields not disrupted. Intertegular distance 1.07– 1.15 mm. Inner metatibial spur serrate. Apical margin of SIII weakly concave; apical margin of SIV deeply concave, almost V-shaped, laterally produced into long processes (Fig. 125), without medio-longitudinal furrow on disc; apical margin of SV relatively entire, with exceedingly faint hump medially; apical margin of SVI emarginate; terminalia as depicted in figures 135 and 136.

Scape and pedicel amber, remainder of antenna brown. Metasoma sometimes with more apical terga (beyond TII) marked with light brown to brown, otherwise entirely amber.

Typical gender pilosity except postgena with numerous elongate, sinuate setae, such setae with short apical branches; inner surfaces of trochanters, mesofemur, and metacoxa with elongate, apically-plumose setae, similar setae on inner surfaces of metatrochanter and metafemur; metatibia without distinctly elongate and sinuous setae. Apical margin of SIII with lateral areas of long, diffuse apical setae; SIV with patch of small darker setae at apices of lateral processes, with three long setae positioned along lateral thirds of margins and before lateral processes; SV with scattered setae.

Etymology. The specific epithet is from the Greek muse for dance, Terpsichore.