Osmylidia Cockerell, 1908

Winterton, Shaun L., Martins, Caleb Califre, Makarkin, Vladimir, Ardila-Camacho, Adrian & Wang, Yongjie, 2019, Lance lacewings of the world (Neuroptera: Archeosmylidae, Osmylidae, Saucrosmylidae): review of living and fossil genera, Zootaxa 4581 (1), pp. 1-99 : 55

Osmylidia Cockerell, 1908

(= Oligosmylus Krüger 1913: 19 . Type species: Osmylus requietus Scudder, 1890: 164 )

Type species. Osmylus requietus Scudder, 1890: 164 (by monotypy).

Diagnosis. Wings ovoid, mostly hyaline; FW costal area relatively narrow, subcostal veinlets simple throughout, sub-parallel in arrangement, relatively widely spaced basally, closely spaced distally; area behind Sc+RA distal to pterostigma relatively large, lacking crossveins to RP; FW RP with 9–10 branches, RP1 originating relatively close to origin of RP; both wings with two distinct gradate series, arranged subparallel, outer gradate series slightly longer than inner series, relatively few radial crossveins in basal half of wings; FW M forked just basal to origin of RP1; FW MA and MP with few distal branches (nearly dichotomous); FW CuP with more pectinate branches than CuA; FW A1 with relatively few branches.

Comments. Known from several, mostly incomplete compression fossils where the forewing is clearly represented, but the body and hind wing are not clear ( Cockerell, 1913, 1914; Carpenter, 1943). Carpenter (1943) noted a close similarity to Gryposmylus , but Osmylidia shows greater similarity to genera such as Lysmus and Protosmylus based on characters of the forewing such as absence of forking of subcostal veinlets, number and arrangement of gradate series and relative proportions of branching patterns in CuA and CuP.