Colocistis paxillata (Mickel & Krombein)

Kimsey, Lynn S. & Wasbauer, Marius S., 2013, Revision of the brachycistidine genus Colocistis Krombein, 1942 (Hymenoptera, Tiphiidae), Journal of Hymenoptera Research 33, pp. 1-24 : 14-15

Colocistis paxillata (Mickel & Krombein) Figures 23 , 29, 30

Aglyptacros paxillata Mickel & Krombein, 1942:673. Holotype female; USA: Colorado, La Junta (USNM).

Diagnosis.

In Colocistis paxillata and Colocistis sulcata the gular carina is not elevated or angulate and does not meet the occipital carina. Colocistis paxillata can be distinguished from Colocistis sulcata by the sulcus on metasomal sternum I extending the same width for the length of the sternum.

Male

unknown.

Description.

Female ( Figs 29, 30 ).

Body length. 10.5 mm.

Head. 1.3 × as wide as long (along midline) in anterior view; vertex with lateral foveae small, circular; occipital carina ending before hypostomal carina medially; transverse carina short and irregular on either side of midline.

Mesosoma. Pronotal disk 0.5 × as long as broad in dorsal view, 1.8 × as long as scutum; punctures 2-3 puncture diameters apart; propleura heavily punctured; forefemur without stout spines; foretibia without spines except apically; basitarsus with row of three spines on outer surface; tibial spur 0.9 × length of basitarsus; hindcoxal ventral carina about half length of coxa, dorsal carina broadly lobate dorsally.

Metasoma. Sternum I with medial groove parallel-sided, extending to apical margin of sternum ( Fig. 23 ).

Color. Reddish brown; vestiture pale yellow.

Distribution.

USA: Colorado, Otero County; only the holotype female was seen.

Figures

Figures 13 - 24. 13, 14 Male forewing. 15 Ventral view of male hindcoxa 16 Dorsal view of male propodeum 17 dorsal view of male mandible 18 lateral view of mandible 19 Ventral view of male metasomal sterna I-II 20, 22 Lateral view of male metasomal segments I and II 21, 23, 24 Ventral view of female metasomal sternum I. Abbreviations: SM- 1, 2, 3 = submarginal cells 1 - 3.

Figures 25 - 32. 25 - 28. Males. 29 - 32 Females. 25, 27, 29, 31 Lateral view 26, 28, 30, 32 Dorsal view 25 - 30 are images of the holotypes.