New short-horned flies (Diptera: Eremochaetidae) from the Early Cretaceous of China
Author
Zhang, Kuiyan
Author
Yang, Ding
Author
Ren, Dong
text
Zootaxa
2014
3760
3
479
486
journal article
46515
10.5281/zenodo.229952
f876d016-0c14-448e-8052-45b673e05a6f
1175-5326
229952
Subgenus
Eremomukha
Mostovski, 1996
FIGURES 3–4
Eremomukha
(
Eremomukha
)
tsokotukha
Mostovski, 1996
Eremomukha
(
Eremomukha
)
tsokotukha
Mostovski, 1996
: 118
.
Eremomukha
(
Eremomukha
)
insidiosa
Mostovski, 1996
: 118
.
syn. nov.
New material.
Body with a pair of wings in dorsal view. No. CNU-DB-LB2011026, housed in Key Lab of Insect Evolution & Environmental Changes, Capital Normal University, Beijing,
China
.
Additional description.
Male, body length
14.7 mm
; wing length
10.2 mm
, width about
2.3 mm
; hind femur about
5.7 mm
. Head narrower than thorax. Eyes bare, approaching holoptic in dorsal view. Antennae 3 segments, arista bristle-like, arising from the top of flagellum.
Thorax black.
Hind
legs femora and tibiae obviously slender with apical part not swollen. Wing long, almost as long as abdomen; veins not well-developed. Vein Sc extending over half length of wing. Vein R1 long, ending nearly at apical 1/7 of wing; vein R2+3 originating from middle of Rs; R4 present, short; vein R4+5 arising from apical part of cell d. Crossvein r-m absent. Vein M with 3 branches, M1 and M2 approaching each other at base. Vein CuA, straight, and vein A1 converged with a short petiole; vein CuP visible. Cell sc wide open; cell br slightly longer than cell bm; cell cup closed, longer than cell br.
Abdomen elongate with 9 visible segments. Segment I shortest and widest. Segments II to VI rectangle, segments VII and VIII shorter than formers, sub-square. Segment IX smallest, details of anatomic structure undistinguished, because of the preserved state.
Locality and horizon.
Collected from near Chaomidian Village, Beipiao City, Liaoning Province,
China
. Early Cretaceous Yixian Formation outcrop.