Ctenanthidium Urban, 1993

Parizotto, Daniele R. & Urban, Danúncia, 2013, Contribution to the knowledge of the Anthidulum Michener and Ctenanthidium Urban (Hymenoptera, Apidae) with new species from Argentina and Peru, Zootaxa 3609 (3), pp. 311-318 : 313

Ctenanthidium Urban, 1993

Ctenanthidium Urban 1993: 85 ; type species: Ctenanthidium gracile Urban, 1993 , by original designation.

Diagnosis. Ctenanthidium can be defined by the juxtantennal carina strong and laminated; female with apex of labrum with hairs; margin of pronotal lobe with lamina interrupted on lateral edge; arolia well developed in both sexes; S4-S5 of male with lateral projections; sixth sternum with a transverse integumentary fold. The genitalia is characterized by having a gonocoxite longer than wide and gonostylus curved on the apical half ( Fig. 26 ). Additionally, an important character indicated by its generic name, is the third sternum of the male with a comb of coarse black setae on the distal margin medially.

Figures

FIGURES 22 – 26. Apex of metasoma (22 – 24) of male of Ctenanthidium, 22, C. argentinum; 23, C. nigripes; 24, C. versicolor sp. nov. Male genitalia (25 – 26) in dorsal view. 25, Anthidulum mourei; 26, Ctenanthidium gracile. Scale = 0.5 mm (Figs. 22 – 24). Scale = 0.25 mm (Figs. 25 – 26).