Juraheterosmylus astictus, Wang, Yongjie, Liu, Zhiqi, Ren, Dong & Shih, Chungkun, 2010

Wang, Yongjie, Liu, Zhiqi, Ren, Dong & Shih, Chungkun, 2010, A new genus of Protosmylinae from the Middle Jurassic of China (Neuroptera: Osmylidae), Zootaxa 2480, pp. 45-53 : 49

Juraheterosmylus astictus sp. nov.

( Figs. 1 C–D, 3A–B)

Diagnosis. Forewing relatively small (the length not beyond 20mm), without spots except the pterostigma.

Description. Head not preserved. Prothorax only partly preserved; mesothorax broad, with fullydeveloped sclerites; metathorax and abdomen preserved poorly.

Forewing 19.8mm long, 6.8mm wide (incomplete). Membrane hyaline, without any spots; pterostigma pale yellow; nygmata not detected for poor preservation. Venation: costal cross-veins simple, with few distal forks; r1-rs cross-veins six branches, with the edged spots; Rs with 12 branches, each branch slight sinuous in middle; cross-veins between Rs branches arranged regularly, forming four rows of gradate series; MP forked beyond the separation of MA from Rs, each branch with complicated distal forks; Cu forked at the wing base; CuA long, with some distal pectinate branches, CuP shorter than CuA, also forming some pectinate branches; anal region not preserved. Hindwing poorly preserved. Membrane resembling the forewing, colorless. Costal region narrow, costal cross-veins simple; Rs branches more than 10, each branch with complicated distal forks; cross-veins between Rs branches arranged regularly, forming two rows of gradate series.

Holotype. CNU-NEU-NN2010202. Specimen consists of an incomplete body with wings stretched-out, but wings are poorly preserved.

Type locality. Daohugou Village, Shantou Township, Ningcheng County, Inner Mongolia, China.

Type horizon. Jiulongshan Formation, Bathonian–Callovian boundary, Middle Jurassic.

Etymology. The specific name is from the Latin word astictus (meaning, immaculate), referring to the immaculate forewing of new species.

Figures

FIGURE 1. Photograph and reconstruction of new species. A – B, Juraheterosmylus antiquates gen. et sp. nov. Body with three stretched-out wings. C – D, Juraheterosmylus astictus sp. nov. Body with four stretched-out wings poorly preserved. E – F, Juraheterosmylus minor sp. nov. Complete body with wings stretched-out, but wings are poorly preserved.