Mangas brevisubcosta, Greenwalt & Blagoderov, 2019

Greenwalt, Dale E. & Blagoderov, Vladimir A., 2019, Review of the fossil record of Bolitophilidae, with description of new taxa and discussion of position of Mangas Kovalev (Diptera: Sciaroidea), Zootaxa 4567 (3), pp. 546-560 : 556-558

Mangas brevisubcosta , sp. nov.

( Figure 10 )

urn:lsid:zoobank.org:act:113812FA-36E3-4F79-827F-603E42D0DFBB

Etymology. The species epithet refers to relatively short subcostal vein of the species and is to be treated as a noun in apposition.

Holotype. PIN 5026 /265, part and counterpart (counterpart incorrectly marked 5026/286, another piece is marked with the same number), partial impression of a male; in the collection of Palaeontological Institute of the Russian academy of Sciences , Moscow.

Type locality and horizon. Khasurty; Western Transbaikalia, Buryatia, Zakamensk District, in the middle reaches of the River Khasurty 10 km south of the village of Tsakir (50°21’N 103°37’E); Gusinoe Ozero Group, Lower Cretaceous..

Description. Wing length 4.5 mm. Antennae slightly shorter than body, flagellomeres with length 6x the width. Median and cubital veins bare. Three palpomeres visible, antepenultimate ovate, length 4x the width, apical two bacilliform, combined lengths equals that of the antepenultimate. Costa extends beyond R 5 for at least 1/3 distance to M 1. Sc short, ending on C before the level of base of Rs1; sc-r at the level of m-cu. Veins R 5, M 1, and M 2 parallel. Section M3 relatively long: section M3/M forks ratio, 1:3.5; M3/M2 sections ration, 1:1.9.

Remarks. Similar to M. kovalevi but differs in the shorter Sc ending in the C before the level of base of Rs1, the more distal position of sc-r, the relative shape of veins R 5, M 1, and M 2 and the relatively longer section M3.

Figures

FIGURE 10. Mangas brevisubcosta sp. nov., holotype PIN 5026/265. 1,2. Part and counterpart, habitus. Scale bars equal 1.0 mm