Chlerogella mourella Engel

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 : 58-60

Chlerogella mourella Engel

Figs 92–94, Map 3

Chlerogella mourella Engel, 2003b: 135 . Moure et al., 2007: 794.

Holotype. ♀, ECUADOR: Napo, Sierra Azul , 2300 m, 21–22 April 1996, P. Hibbs, ex: flight intercept trap ( SEMC).

Figures 92–94. Holotype female of Chlerogella mourella Engel. 92 Lateral habitus 93 Lateral aspect of head 94 Facial aspect.

Paratype. ECUADOR: 1♀, Napo, Cosanga Aragon, 8 November 1993, G. Onore ( QCAZ).

Diagnosis. Chlerogella mourella can be recognized readily by its relatively short malar space and its black head and mesosoma lacking metallic highlights (Figs 92–94).

Description. From Engel (2003b), with minor emendations: Female: Total body length 10.6 mm; forewing length 8.72 mm. Head length 2.44 mm, width 1.84 mm. Clypeus beginning just above lower tangent of compound eyes. Malar space 19% compound eye length (malar length 0.3 mm, compound eye length 1.58 mm) (Figs 93–94). Upper interorbital distance 0.96 mm; lower interorbital distance 0.88 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 1.5 mm; mesoscutellum weakly convex, not bigibbous. Basal vein distad cu-a by three times vein width; 1rs-m distad 1m-cu by 3.5 times vein width; 2rs-m distad 2m-cu by five times vein width, 2rs-m 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 shorter than that of third submarginal cell; posterior border of third submarginal cell about two times longer than anterior border. Distal hamuli arranged 2-1-2. Inner metatibial spur with six branches (not including apical portion of rachis).

Clypeus and supraclypeal area granular with weak punctures separated by a puncture width; face granular with minute punctures in malar space separated by a puncture width; vertex weakly granular, becoming imbricate on gena and more strongly so by postgena. Pronotum weakly imbricate; mesoscutum granular; mesoscutellum and metanotum finely imbricate with faint punctures. Preëpisternum and mesepisternum granular with faint punctures separated by 2–3 times a puncture width; hypoepimeral area impunctate; metepisternum faintly imbricate. Propodeum strongly imbricate. Metasoma finely imbricate.

Mandible black with reddish apex; labrum and remainder of head black to dark brown. Antenna dark brown except basal one-fifth and inner surface of scape amber. Mesosoma black (Fig. 92); tegula dark brown. Wing membranes lightly infumate; veins amber except Sc+R dark brown. Legs amber except dark brown on procoxa, inner surface of profemur, basal half of mesocoxa, inner base of mesofemur, basal threequarters of metacoxa, basal half of inner surface of metafemur. Metasomal TI amber, with dark brown band just beyond midline, band stopping a distance from apical margin equal to its width, apical margin amber; TII dark brown except basal and apical margins amber; TIII dark brown except apical margin amber; TIV–VI dark brown; SI–II amber; SIII amber except medial dark brown patch; SIV dark brown except apical margin yellowish; SV–VI dark brown.

Pubescence golden except somewhat fuscous on TV–VI and SVI. Dense long, branched setae on discs of SI–II.

Male: Unknown.