Eotrichocera (Archaeotrichocera) spatiosa Liu, Shih & Ren, 2012, sp. nov
| Main Authors: | Liu, Luxi, Shih, Chungkun, Ren, Dong |
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| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2012
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6178287 |
Daftar Isi:
- Eotrichocera (Archaeotrichocera) spatiosa sp. nov. (Fig. 3) Diagnosis: Sc rather long, about 0.84 times of the wing length, and ending slightly beyond R 2; crossvein sc-r at the two-thirds of Rs; r-m at about one-third of d cell; d cell small, 0.19 times length of wing; A 2 short, about 0.21 times of the wing length. Description: Body: A well-preserved female adult fossil. Head subcircular and narrower than thorax. The compound eyes with clear facets. One antenna with three segments visible. The thorax poorly preserved. Abdomen length 11 mm, width 1.5 mm, with 8 clear segments. Female with ovipositor preserved. The legs long and slender. Wing: Length 12 mm and width 4.5 mm, 2.7 times as long as wide. Sc rather long, about 0.84 times of the wing length and terminating slightly beyond R 2; Crossvein sc-r at the two-thirds of Rs. Rs arising from less than basal one-third of length of wing, Rs at 0.63 times length of wing ramified into R 2 + 3 + 4 and R 5; R 2 + 3 + 4 short, being 0.6 times as long as R 2 + 3; R 2 short, about one-seventh of the length of dR 1, and nearly one-fourth length of R 2 + 3; R 3 about 1.3 times as long as R 2 + 3; section bR 5 rather short, 0.3 times as long as r-m. Stem vein M ramified nearly at the same level of sc-r; bM 1 + 2 longer than r-m, bM 1 + 2 about three-fifths mM 1 + 2, and bM 1 + 2 and mM 1 + 2 strongly bent at r-m, mM 1 + 2 distinctly longer than dM 1 + 2; cell m 1 as long as d cell, about twice as long as dM 1 + 2, M 1 slightly longer than M 2. Crossvein m-m shorter than bM 3, M 3 distinctly longer than M 4, r-m at about one-third of d cell; d cell broader distally, small, 0.19 times length of wing, m-cu meeting M 3 + 4 slightly before its fork. CuA long. A 1 long and reaching wing margin. A 2 short, about 0.21 times length of wing and curving toward to posterior margin. Material: Holotype, female, CNU-DIP-D-NN 2008130 p/c, a well-preserved body with wings. Etymology: The species name refers to the large size of this specimen. Remarks: The new species is similar to Eotrichocera (Archaeotrichocera) ephemera Zhang, 2006, but the former can be easily distinguished by its larger size; Sc 0.84 times length of wing and terminating slightly beyond R 2; cell m 1 as long as d cell, twice as long as dM 1 + 2; d cell 0.19 times length of wing; A 2 short, about 0.21 times length of wing. The new species is similar to the Eotrichocera (Archaeotrichocera) conica Krzemińska, Krzemiński et Ren, 2009, but can be easily separated from the latter by Sc longer; sc-r at two-thirds of Rs, Rs fork 0.63 times length of wing; r-m at about one-third of d cell; d cell slight smaller; A 2 slight shorter. Compared with Eotrichocera (Archaeotrichocera) rara Krzemińska, Krzemiński et Ren, 2009, the main differences are: Sc longer, sc-r at two-thirds of Rs; Rs fork in 0.63 times length of wing; R 2 + 3 longer than R 2 + 3 + 4; d cell smaller; dM 1 + 2 longer (about half length of cell m 1); m-cu meeting M 3 + 4 slightly before its fork; A 2 slightly longer.
- Published as part of Liu, Luxi, Shih, Chungkun & Ren, Dong, 2012, Two new species of Ptychopteridae and Trichoceridae from the Middle Jurassic of northeastern China (Insecta: Diptera: Nematocera), pp. 55-62 in Zootaxa 3501 on page 59, DOI: 10.5281/zenodo.282475