Davidioides Fraser, 1924

Sadasivan, Kalesh, Nair, Vinayan P., Pulikkal, Subash, Janaki, Sabari & Samuel, Abraham, 2023, Taxonomic notes on Davidioides martini Fraser, 1924 (Odonata: Gomphidae) and description of its female from Western Ghats, Peninsular India, International Journal of Odonatology 26, pp. 114-123 : 116

Genus Davidioides Fraser, 1924

Type species: Davidioides martini Fraser, 1924

Diagnosis of the genus

Differentiated from all other genera of Gomphidae by the males having discoidal cells, hypertrigones, and the subtrigones of the forewing being always entire, anal triangle 4-celled, and discoidal cell of hindwing traversed by a nervure running from the costal to the distal side.

Head small, triangular; frons well-angulated, occiput simple, concave. Wings broad and long, nearly as long as abdomen, tornus markedly angulated, base of hindwing deeply excavated; membrane obsolete; anal triangle 3-celled; arc situated between the second and third antenodal nervures in FW; three cross nervures between bifurcation of radial sectors and anterior median (MA) in FW, only one in HW; sectors of arc well separated at origin, approximately parallel for some distance, especially in the hindwing; CuA and MP running parallel to rear border of wing; only 1 cubital nervure in all wings; no basal antenodal of 2 nd series present; trigones (triangles) of forewing entire, that of hindwing traversed by one vertical nervure; pterostigma shorter than one quarter the distance between node and outer end of pterostigma; 4 rows of postanal cells in hindwing, 1 or 2 in forewings; legs moderately long, extending to apical border of Segment 1; anal appendages subequal, widely and equally divaricate, simple, without branches or ventral processes ( Fraser, 1924, 1934)