Lance lacewings of the world (Neuroptera: Archeosmylidae, Osmylidae, Saucrosmylidae): review of living and fossil genera Author Winterton, Shaun L. Author Martins, Caleb Califre Author Makarkin, Vladimir Author Ardila-Camacho, Adrian Author Wang, Yongjie text Zootaxa 2019 2019-04-09 4581 1 1 99 journal article 27348 10.11646/zootaxa.4581.1.1 5b259853-01f6-4307-8bef-58c98ec73bd3 1175-5326 2633842 20A9776D-AE5F-41BC-A35B-0C5E42EDFE48 Lithosmylidia Riek, 1955 ( Fig. 5 ) Type species. Lithosmylidia lineata Riek, 1955 : 678 (by original designation). Diagnosis . Forewing medium sized; trichosors present; crossveins poorly preserved in wings of all specimens; costal area with veinlets widely spaced, mostly simple; subcostal area with sc-r crossveins not detected; crossveins in area between RA and RP few or absent (one detected in one specimen of L. parvula ); RP originating close to wing base, with at least 10 branches, very slightly sinuous distally in some species; crossveins of RP field not well preserved in most material, but apparently restricted to a few random ones proximally and two widely separate and irregular gradate series; M forked close to wing base; CuA irregularly pectinate forked, with branches oblique. CuP dichotomously forked with few branches; 1A pectinate, length variable; 2A deeply forked; 3A short and apparently simple; HW unknown. Comments . A specimen of L. lineata was considered by Riek (1955) as a hind wing, however Lambkin (1988) instead argued that it represented a forewing. Originally, Lithosmylidia was described by Riek (1955) belonging to Kempyninae , but Makarkin et al. (2014) argued that the genus belonged to Archeosmylidae . Characters such as Sc+RA joining the wing margin before the wing apex and the lack of RP crossveins support its placement in Archeosmylidae ; unfortunately, important information about the hind wing cubital and anal vein fields were not preserved in any specimen. Included species . L. baronne Lambkin, 1988 ( Australia ) (Middle Triassic) L. lineata Riek, 1955 ( Australia ) (Late Triassic) L. parvula Riek, 1955 ( Australia ) (Late Triassic)