Perissosega Krombein, 1983

Mita, Toshiharu, 2022, Taxonomy of Perissosega Krombein (Hymenoptera: Chrysididae, Amiseginae) with description of a new species from Japan, Zootaxa 5169 (3), pp. 279-285 : 281-282

Genus Perissosega Krombein, 1983

Perissosega Krombein, 1983: 26 .

Type species: Perissosega venablei Krombein, 1983: 27 .

Diagnosis. Scapal basin cross-ridged, sometimes dorsal margin surrounded by strong carina; occipital carina variable, but incomplete; malar sulcus developed; posterior margin of vertex weakly excavated; flagellum compact, intermediate flagellomeres shorter than (♀) or as long as (♂) wide; pronotum thick, about as long as mesoscutum along mid-line, with posteromedial pit and pit before lateral lobe; mesoscutum with notauli and short track of parapsidal signum; mesopleuron without omaulus and posterior oblique sulcus; metanotum more than half as long as mesoscutellum; median enclosure of metanotum present, sculptured as mesoscutum; metapectal-propodeal complex with posterior propodeal projection; both sexes fully winged; R1 2 v not discriminated from pterostigma; distal part of pterostigma + R1 2 v 0.4–0.7 × 2r-rs 2 v; 2r-rs 2 v weakly curving; dark streak of Rs 2 v extended at abrupt angle from 2r-rs 2 v; Rs&M 2 v variable, usually arising before Cu-a 2 v; tarsal claw with submedian tooth; metacoxa with dorsal carina; metasoma more or less densely punctate by large punctures .

Perissosega is probably most closely related to Atoposega . This genus is distinguished from Atoposega by following characteristics: the body is largely black (the ground color of the body is red and black in Atoposega ); the metanotum is punctate as mesoscutellum (differently sculptured from the mesoscutellum); and the metasoma is sculptured by large and densely located punctures (usually more or less finely scratched) ( Krombein, 1983; Kimsey & Bohart, 1991; Kimsey, 2014).

Host. Unknown.

Distribution. Oriental genus known from Sri Lanka ( Krombein, 1983) and Japan, new record.

Remarks. Two species, P. venablei and P. sulcata sp. nov. are known.