. Bulletin of the British Museum (Natural History), Geology. 52 P. E. S. WHALLEY. Fig. 3 Archeosmylus complexus sp. nov. Venation. A—Anal veins, Cu—Cubital vein, MA—Anterior medial, MP—Post medial, Sc—Subcostal, Rl—First radial, Rs—Radial sector. length of 4-5 mm (wingspan estimated 9-1 lmm) and are smaller than the other neuropterous insects from the Mesozoic. Generally the branches from the radial sector remain unbranched themselves until they reach the margin where there are short marginal forks. has the base of the wing overlaid by a fragment of (?) hindwing. This effectively hides
. Bulletin of the British Museum (Natural History), Geology. 52 P. E. S. WHALLEY. Fig. 3 Archeosmylus complexus sp. nov. Venation. A—Anal veins, Cu—Cubital vein, MA—Anterior medial, MP—Post medial, Sc—Subcostal, Rl—First radial, Rs—Radial sector. length of 4-5 mm (wingspan estimated 9-1 lmm) and are smaller than the other neuropterous insects from the Mesozoic. Generally the branches from the radial sector remain unbranched themselves until they reach the margin where there are short marginal forks. has the base of the wing overlaid by a fragment of (?) hindwing. This effectively hides the subcostal vein towards the base and makes the specimen look very like a Recent species of Hemerobius. However, the base of the costal area of the wing has finely preserved hairs, unlike any of the other specimens, and there appears to be a change in the texture between the outer part of the wing with veinlets and the basal part of the costal area. Thus I think that the subcostal vein was probably present in this specimen, but is obscured. It is provisionally placed in A. alysius on the remaining characters and size of the wing. Family MESOPOLYSTOECHOTIDAE Martynova, 1962 Diagnosis. Apex of forewing tending to a point. Sc and Rl gradually merging. Branches of Rs without long forks. MP with two branches (Martynova 1962). Upper Triassic-Jurassic, Europe, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
Size: 2092px × 1194px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
