Isostenosmylus Krüger, 1913,

Martins, Caleb Califre, Ardila-Camacho, Adrian & Aspöck, Ulrike, 2016, Neotropical osmylids (Neuroptera, Osmylidae): Three new species of Isostenosmylus Krüger, 1913, new distributional records, redescriptions, checklist and key for the Neotropical species, Zootaxa 4149 (1), pp. 1-66: 14

publication ID

publication LSID

persistent identifier

treatment provided by


scientific name

Isostenosmylus Krüger, 1913


Isostenosmylus Krüger, 1913 

The forewing has one cross-vein in the subcostal area; the first crossvein to MP beyond the basal nygma, arising from the MA; CuA curved towards posterior wing margin at level of MP fork; CuA and others typical, and unthickened. Male has eighth and ninth tergites fused, line of fusion often indistinct; dorsum often membranous and impressed in a longitudinal trough; ectoprocts fused dorsally; ninth gonocoxite largely internal, usually Ushaped in ventral view with a posteromedial widened lobe, lateral branches are ventromedially articulated with either, elongated and curved or plate shaped sclerites, representing the ninth gonapophyses; complex of tenth gonocoxites fused basally, with a pair of basal, and sometimes also apical branches. ( Kimmins 1940; Ardila- Camacho & Noriega 2014).

Distribution. Colombia, Ecuador, Peru, Bolivia, Chile, Brazil, Venezuela (New record).