Composibittacus bipunctatus Liu, Shih, Bashkuev & Ren, 2016, sp. nov
| Main Authors: | Liu, Sulin, Shih, Chungkun, Bashkuev, Alexei, Ren, Dong |
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| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2016
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6086642 |
Daftar Isi:
- Composibittacus bipunctatus sp. nov. (Fig. 1) Etymology. The species name of bipunctatus indicates the two conspicuous maculae on the wing. Material. Holotype CNU-MEC-NN 2014081. Horizon and locality. Jiulongshan Formation, latest Middle Jurassic, Daohugou Village, Shantou Township, Ningcheng County, Inner Mongolia, China. Diagnosis. Four oblique crossveins between R 1 and R 2 + 3, among which are two pterostigmal crossveins (Pcv’s); Scv about 1 / 5 as long as the Sc length between Scv and the apex of Sc; the anterior of the ‘bittacid cross’ proximal to the forking of R 4 + 5; four crossveins between Cu 1 and Cu 2. Description. Poorly preserved with only one complete forewing and one hind wing, sex unknown. Basal part of forewing narrow, two conspicuous maculae, one at the forking of Rs, the other more proximal; Sc simple and long, terminating at the anterior margin distal to the forking of R 4 + 5; one subcostal crossvein (Scv) between Sc and R 1; R 1 running smoothly through the pterostigma with five pterostigmal crossveins (Pcv’s), three between R 1 and R 2, and two between R 1 and R 2 + 3. (Figs. 1 C, D); R 1 with additional two oblique crossveins to R 2 + 3, both with dark maculae; bifurcation of Rs proximal to the forking point of M; Rs and M with four branches; four crossveins between R 2 and R 3; R 4 and R 5 reaching apical margin with at least eight crossveins; M 1 + 2 bifurcating distal to the forking of M 3 + 4, at least three crossveins between M 1 and M 2; one crossvein between M 1 and apical margin, two between M 3 and M 4 and two between M 4 and Cu 1; Cu 1 and Cu 2 almost parallel, four crossveins between them before the basal crossvein of m 4 -cu 1; 1 A long, extending past the origination points of Rs from R 1 and M from Cu 1; 2 A terminating in the posterior margin proximal to the originating points of Rs and M; only one crossvein between 1 A and 2 A present (the other crossvein missing, probably due to preservation); many cells between Rs and M. (Fig. 1 D) Basal part of hindwing narrow; two conspicuous maculae at and near the forking of Rs; Sc untraceable; five pterostigmal crossveins (Pcv’s) present, one oblique crossvein between R 1 and R 2 + 3; Rs and M with four branches; two crossveins between R 2 and R 3; two crossveins between Cu 1 and M 4; Cu 1 and Cu 2 almost parallel and three crossveins between them; 1 A reaching the posterior margin at the level of halfway between the origination and bifurcation of Rs; part of 2 A preserved; many cells between Rs and M (Fig. 1 E). Only six abdominal segments preserved (Figs. 1 A, B). Forewing 28.2 mm long with maximal width of 6.1 mm; hind wing 24.8 mm long with maximal width of 5.6 mm.
- Published as part of Liu, Sulin, Shih, Chungkun, Bashkuev, Alexei & Ren, Dong, 2016, New Jurassic Hangingflies (Insecta: Mecoptera: Bittacidae) from Inner Mongolia, China, pp. 65-78 in Zootaxa 4067 (1) on page 68, DOI: 10.11646/zootaxa.4067.1.5, http://zenodo.org/record/270585