Colocistis brevis (Cresson)

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 : 5-6

Colocistis brevis (Cresson) Figures 1 , 33 , 41 , 49

Brachycistis brevis Fox, 1899:285. Holotype male; USA: California (ANSP).

Diagnosis.

This is one of three species in Colocistis , with two submarginal cells, including Colocistis eremi and Colocistis chemsaki , and one of two ( Colocistis eremi ) with the costal vein not extending beyond the stigma. It can be distinguished from Colocistis eremi by the hypostomal carina not elevated anteriorly (strongly elevated in Colocistis eremi ) and the aedeagus in lateral view slightly decurved (not decurved in Colocistis eremi ).

Description.

Male.

Body length. 5-11 mm.

Head ( Fig. 1 ). Compound eyes enlarged, extending laterally far beyond temples, inner margins somewhat emarginate; ocelli enlarged, diameter of lateral ocellus at least 0.7 × OOL; vertex with impressed line between lateral ocelli absent or reduced to a row of punctures; postvertex not visible behind ocelli in frontal view; lateral ocelli separated from vertex by 0.5 or less one ocellar diameter in frontal view; clypeus raised medially and visible above mandibles in lateral view, apex not bounded laterally by strong teeth; gular carina gradually elevated anteriorly.; LID 0.8 × UID; flagellomere I length 2.3-2.5 × breadth; flagellomere II length 2.5 × breadth; flagellomere IX length 5.5-6.0 × breadth; occipital carina strong, complete ventrally, with strong carina extending from foramen magnum to hypostomal carina medially; mandible narrowest submedially.

Mesosoma. Pronotal punctures deep, contiguous; forefemur without stout spines; foretibia without spines except apically; basitarsus with three spines on outer surface; tibial spur as long as basitarsus; hindcoxal longitudinal dorsal carina basally angulate; mesopleural punctures contiguous; scutellum not strongly elevated above level of propodeum; scutal and scutellar punctures 1-4 puncture diameters apart; postscutellum densely punctate; propodeum dorsal surface densely irregularly rugose, with irregular longitudinal submedial and sublateral carinae, posterior surface transversely, densely ridged, with large, dense punctures laterally; lateral surface impunctate ventrally becoming densely punctate dorsally; forewing with two submarginal cells, costa not extending along wing margin beyond stigma.

Metasoma. Tergum I without transverse carina; sternum II without raised area anteriorly.

Genitalia ( Figs 42 , 50 ). Gonostylus evenly curved to tip, aedeagus slightly decurved in lateral view.

Color. Head and body concolorous castaneous; vestiture brown.

Female unknown.

Distribution

( Fig. 33 ). USA: Arizona: Maricopa, Pima, Yuma counties; California: Imperial, Inyo, Riverside, San Bernardino, San Diego counties; Nevada: Lincoln, Nye counties; Texas: El Paso County; Mexico: Baja California, Baja California Sur, Sonora; 990 males were examined including the type (BME, EMEC, KSBS, LACM).

Figures

Figures 1 - 12. 1 - 8 Front view of male head. 9 Lateral view of male head 10 - 12 Ventral view of female head. Abbreviations: LID = least interocular distance, OcC = occipital carina; OOL = ocellocular distance, THC = transverse hypostomal carina, UID = upper interocular distance.

Figures 33 - 36. Distribution maps of Colocistis species.

Figures 41 - 48. Ventral view of male genital capsule.

Figures 49 - 56. Lateral view of male genital capsule.