Oedosmylus brevis, New, 1990

Cousin, Guillaume & Béthoux, Olivier, 2016, The steps towards an inconspicuous vein fusion documented in Stenosmylinae forewings (Neuroptera: Osmylidae), Organisms Diversity & Evolution (New York, N. Y.) 16 (1), pp. 225-232 : 226-228

Oedosmylus brevis

Wing pairs subequal; fore- and hind wing about 20.5 and 17.9 mm long, respectively; apex tapered; RP with about 11 main branches, 30 terminal branches. Forewing (Fig. 1a, b, d–g): MA fused with R short before the arising of RP+MA or opposite to it; RP and MA diverging less than 1.0 mm distal to the fusion; MP1 and MP2 diverging at wing mid-length; MP and MP1 aligned,

Fig. 1 Wing venation in Oedosmylus brevis New, 1989. a, b, d–g Forewings. c Hind wing. a–c Wing overviews. d–g Details of the base of MP2 with respect to CuA (asterisk indicates the base of MP2; dashes delimit the CuA area). a, f Specimen QM IWC OB 5, left forewing. b, d, e Specimen QM IWC OB 4, left forewing. g Specimen QM IWC OB 3, left forewing

MP2 diverging obliquely; MP2 distinct from, shortly connected with (average condition) or fused for a short distance with CuA (− 1.4 mm / − 0.1 mm / 0.8 mm; 0.5 mm); one forewing has the first fork of CuA, the point of connection of MP2 with CuA and the point of divergence of MP2 from MP2+CuA all superimposed (i.e. this organization is characterized by a point where two stems merge and three stems diverge); MP2 and CuA first branched distal to their divergence point; MA forked very distally, MP1 with an average of 4.5 branches (ranging from 4 to 5; posteriorly pectinate), MP2 with an average of 6.9 branches (ranging from 6 to 9; overall posteriorly pectinate), CuA with an average of 4.7 branches (ranging from 3 to 6; overall anteriorly pectinate), CuP with an average of 16.9 branches (ranging from 14 to 19; posteriorly pectinate). Hind wing (Fig. 1c): no clear origin of MP2 as herein identified (see B Discussion^).