Osmyloberotha simpla, Khramov, 2021

Khramov, Alexander V., 2021, Osmyloberotha, an unusual new genus of beaded lacewings (Neuroptera: Berothidae) from Burmese amber, Zootaxa 5060 (2), pp. 245-249 : 246

Osmyloberotha simpla sp. nov.

( Fig. 1 )

Etymology. From Latin “simplus”, meaning simple.

Type material. Holotype PIN № 5608/277, a complete insect preserved in amber with wings partly polished away.

Locality and horizon. Hukawng Valley, Kachin State, northern Myanmar; lowermost Cenomanian, Late Cretaceous.

Diagnosis. As for genus.

Description. Antennae short, no longer than 2.5 head width, scapes almost not enlarged. Forewing 6.6 mm long, 2.3 mm wide, without distinct coloration, except dark oval spot near the base of MA; humeral vein absent; crossveins scarce; costal area narrow, as wide as subcostal area and R1 area combined, with costal veinlets mostly unforked, decreased in width to the base of wing very smoothly; R1 area with 1-2 crossveins, MA separates from Rs almost at level of MP bifurcation; MP1 and MP2 near the base connected correspondingly with MA and CuA by single crossveins; Rs with 6-7 branches; CuA and CuP occupy nearly equal area, each with 4-5 terminal branches, 1st branch of CuP deeply divided; A1 with 4 branches; A2 pectinate, with 4-5 short branches, A3 simple, connected with A2 by crossvein. Hindwing 6.2 mm long, 2.2 mm wide, uncolored; with two gradate series of crossveins, proximal one of them sometimes incomplete; Sc and R1 not to fused apically; terminal part of R1 short, with few branches; R1 area with two crossveins, first of them situated near the base of 1st branch of Rs; MP bifurcates slightly proximad to separation of stem of Rs from R1; MA near its base connected with MP by crossvein; Rs with 5 branches; CuA and CuP fuse with each other distad to bifurcation of MP; CuA with 12 branches, CuP not pectinate, connected with CuA by a short crossvein near its distal end, with 2 terminal branches, A1 and A2 pectinate, each with 4 short branches.

Figures

FIGURE 1. Osmyloberotha simpla gen. et sp. nov. (Neuroptera: Berothidae) from Burmese amber, holotype PIN № 5608/277, A—general view, B—head and antennae, photo taken from the opposite side, C-F—drawings of wing venation: C—left forewing, D—right leftwing, E—right hindwing, F—left hindwing. Scale bars are 1 mm (A, C-F), 0.5 mm (B).