Dissomphalus dumosus, Evans, 1966

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74 : 53-54

dumosus species­group

Diagnosis. — Male. Mandible tridentate, head very long and developed posteriorly the eye tops, median lobe of clypeus much produced, pronotal and propodeal discs elongate, metasomal tergite II with pair of antero­lateral depressions, paramere wide, ventral ramus of aedeagus very long and ventral side of basiparamere much developed.

Comments. — The group contains two species, D. dumosus Evans, 1966 from south Brazil and D. longicephalus Azevedo, 2000 from north Brazil.

bicavatus species­group

Diagnosis. — Male. Mandibles bidentate, thorax usually with texture and punctures as on frons, mesoscutum and scutellum with texture weaker and punctures smaller than those of frons; metasomal tergite II with pair of lateral and anterior depression, large usually more than 0.5 X the median length of tergite II; stalk of hypopygium slender. Female. Mandibles tetradentate; clypeus tridentate; propodeal disc with sides nearly parallel.

Comments. — This group ranges from south of Mexico to southeastern Brazil (São Paulo). The group contains 34 species as follow: D. abruptus Azevedo, 2001 , D. alticarinatus Azevedo, 2001 , D. archeatus Azevedo, 2001 , D. bicavatus Evans, 1979 , D. basivolsellus Azevedo, 2001 , D. bivolsellus Azevedo, 2001 , D. curvilongus Azevedo, 2001 , D. elongatus Azevedo, 2001 , D. falcatus Evans, 1962 , D. falciformis Azevedo, 2001 , D. flagellatus Azevedo, 2001 , D. geniculatus Azevedo, 2001 , D. gladius Azevedo, 2001 , D. intradentatus Azevedo, 2001 , D. largimanus Azevedo, 2001 , D. latus Azevedo, 2001 , D. lobisserratus Azevedo, 2001 , D. longimerus Azevedo, 2001 , D. longipilosus Azevedo, 2001 , D. mantoides Azevedo, 2001 , D. megadentatus Azevedo, 2001 , D. microdentatus Azevedo, 2001 , D. octavus Azevedo, 2001 , D. pedipalpoides Azevedo, 2001 , D. piscicercus Azevedo, 2001 , D. rectangularis Azevedo, 2001 , D. retorcerens Azevedo, 2001 , D. sinuatus Azevedo, 2001 , D. spiculus Azevedo, 2001 , D. strepsus Azevedo, 2001 , D. subtriangularis Azevedo, 2001 , D. tetracerutus Azevedo, 2001 , D. tetralobatus Azevedo, 2001 , D. trogon Azevedo, 2001 , D. tropoides Azevedo, 2001 .

I defined the bicavatus species­group ( Azevedo 2001), when I included D. bicavatus Evans, 1979 and 33 new species. In that time I had not examined D. falcatus , which fits in this group by having large lateral depression on the metasomal tergal II.