Bacharaboilus lii, Gu, Jun-Jie, Qiao, Ge-Xia & Ren, Dong, 2011

Gu, Jun-Jie, Qiao, Ge-Xia & Ren, Dong, 2011, A exceptionally-preserved new species of Barchaboilus (Orthoptera: Prophalangopsidae) from the Middle Jurassic of Daohugou, China, Zootaxa 2909, pp. 64-68 : 65

Bacharaboilus lii sp.nov.

Figs. 1–2

Diagnosis. RP branching earlier, basal of the first branch of RA; CuPaβ between ‘handle’ and posterior wing margin undulate; AA1 fusing with CuPb for a moderate distance; CuPb between handle and CuPaα short.

Etymology. The specific name is dedicated to Mr. Li Yuezhuo, Director of Sanya Palaeontological Museum, for providing this specimen for this study.

Holotype. CNU-ORT-NN2011001PC.

Horizon and locality. Jiulongshan Formation, Middle Jurassic; Daohugou Village, Ningcheng County, Chifeng City, Inner Mongolia, China.

Description. Head is hypognathous, about 5.2 mm wide; antennae inserted between the eyes, space between sockets of antennae about 2.3 mm; antennae typical of Ensifera, about 80 mm (much longer than the body), scapus cylindrical; mandibles stout, bearing strong molars and dentition, the dentition of the left and right mandibles is not very asymmetrical ( Fig. 1 , A). Forewing ( Fig. 2 , A–D: about 42 mm long, maximal width 20 mm; ScA slightly curved and reaching anterior wing margin close to mid-length of wing, at the level of the divergence of R; ScP basally bowed towards anterior margin, branches of ScP numerous, with a network of cells between them; R long and straight, simple for 18 mm, then forking into RA and RP close to the mid-length of wing, area between ScP and R broader than area between R and M + CuA in basal part; RA pectinate with 6 branches; RP branched earlier, basal of the first branch of RA, pectinate with 5 branches; areas between the branches of RP with regular reticulated cross-veins in most part; area between ScP and R broader than area between R and M + CuA in basal part, a series of straight cross-veins regularly arranged between RA and RP; M forks into MA and MP before the divergence of R, MP basally curved; area between base of RP and MA broad, with some gently curved cross-veins; free part of CuA straight, 4 mm, slightly longer than free part of M; CuA + CuPaα ramified at its origin, with 5 terminal branches reaching posterior wing margin; ‘handle’ straight, CuPaβ between its base and ‘handle’ straight, CuPaβ between ‘handle’ and posterior wing margin undulate; area between CuPaβ and last posterior branch of CuA + CuPaα apparently broad and filled with straight or curved cross-veins in most basal part, cross-veins near posterior margin formed into network; CuPb sharply curved and long, area between CuPb and CuPaβ narrower than area between CuPaβ and last posterior branch of CuA + CuPaα, filled with straight or gently curved cross-veins; stridulatory vein located on CuPb; AA1 similar to CuPb in shape and fused with CuPb for a moderate distance near wing margin, then running to posterior margin; 2 anal veins straight, cross-veins between AA1 and AA2 straight. Hind wing strongly overlapped and damaged; RA and RP have numerous branches ( Fig. 2 E–F).

Figures

FIGURE 1. CNU-ORT-NN 2011001 P, A. photograph of habitus (dry, negative imprint), scale bar represents 10 mm. B. photograph of mandibles (under ethanol, negative imprint), scale bar represent 1 mm.

FIGURE 2. CNU-ORT-NN 2011001 PC, A. Photograph of left forewing (dry, negative imprint), B. line drawing of left forewing, C. photograph of right forewing (dry, negative imprint, flipped horizontally), D. line drawing of right forewing, E. photograph of hind wings (dry, negative imprint) and F. line drawing of hind wings. Scale bar represent 10 mm.