Mesosmylidus Jepson et al., 2012

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 : 54

Mesosmylidus Jepson et al., 2012

Type species. Mesosmylidus vulgaris Jepson et al., 2012: 38 (by original designation).

Diagnosis. Forewing narrowly ovoid; costal area broad basally and likely narrowed distally, subcostal veinlets simple, relatively widely spaced; RP1 originating relatively far from origin of RP; M fork distinctly basal to origin of RP1; radial and medial crossveins in basal half of the wing not arranged in gradate series; MA field area smaller than MP field area; CuA with very few pectinate branches distally; CuP strongly pectinate (ca. 10 branches); A1 elongate and strongly pectinate (at least 4 branches); HW unknown.

Comments. Only known from a single forewing fragment, the subfamily affinity of this genus is unclear. Jepson et al. (2012) suggested that it may belong to Mesosmylininae , but its forewing crossveins are not arranged to series and the forewing CuP is greatly elongate and pectinately branched compared with CuA, precluding it from Mesosmylininae and indicating more appropriate placement in Protosmylinae .