Schistoneurus paraimpressus, Jaschhof, 2024

Jaschhof, Mathias, 2024, New taxa and new records of Winnertziinae and Porricondylinae (Diptera: Cecidomyiidae) from Germany, European Journal of Taxonomy 953, pp. 1-134 : 107-108

Schistoneurus paraimpressus sp. nov.

urn:lsid:zoobank.org:act:812EC0F3-671B-40BA-B0A9-39D077CCAC0D

Fig. 29

Differential diagnosis

Morphology

In terms of male morphology, S. paraimpressus sp. nov. bears a close resemblance to S. impressus ( Jaschhof & Jaschhof 2013: fig. 119), the very few differences in terminalia structures being as follows. In the new species, the gonocoxal ventral emargination is markedly shallower, resembling the shape of a watch glass (↓ 1, Fig. 29A ); each of the parameres ends in a single small knob (↓ 2, Fig. 29A ) rather than in several knobs of various sizes; and the gonostylus is slightly more elongate and more slender, and has a larger area covered by thick black spines, especially along the inner margin (↓ 3, Fig. 29B ). Also, in S. impressus the gonostylar inside has a transverse ridge, which in S. paraimpressus is absent so that the inner surface is fairly evenly concave (↓ 4, Fig. 29B ). Larvae and females of the new species are unknown.

DNA barcode

CO1 sequences (651‒653bp) of the type specimens are available in BIN BOLD:AEO6710. Search on BOLDʼs BIN Database retrieved no further result for this BIN (accessed 27 Aug. 2023).

Etymology

The name ‒ the Latin prefix ‘ para -’ means ‘beside’ ‒ refers to the resemblance of this species to S. impressus .

Type material

Holotype

GERMANY • ♂; Bavaria, Weilheim, Pähl , Hartschimmelhof ; 47°93′99″ N, 11°18′30″ E; 20 Jun.‒12 Jul. 2020; D. Doczkal and K. Grabow leg.; Malaise trap; fen; BOLD GBDTA9935-21 ; ZSM-DIP-42303-E07 .

Paratype

GERMANY • 1 ♂; same data as for the holotype; BOLD GBDTA9936-21 ; ZSM-DIP-42303-E08 .

Figures

Fig. 29. Schistoneurus paraimpressus sp. nov., ♂♂. A. Holotype, terminalia, ventral view (ZSM-DIP- 42303-E07). B. Holotype, gonostylus, ventral view.C. Paratype, fourth flagellomere, lateral view (ZSM- DIP-42303-E08). Scale lines: 0.05 mm. The numbered arrows indicate diagnostic characters (see text).