Tetraneuromyia wilksae, Jaschhof, Mathias & Jaschhof, Catrin, 2015

Jaschhof, Mathias & Jaschhof, Catrin, 2015, New species and new distribution records of Lestremiinae, Micromyinae and Porricondylinae (Diptera: Cecidomyiidae) in Sweden, Zootaxa 3973 (1), pp. 159-174: 168-169

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Tetraneuromyia wilksae

sp. n.

Tetraneuromyia wilksae  sp. n.

( Fig. 7View FIGURE 7 A –D)

Diagnosis. Tetraneuromyia wilksae  , in every respect a typical representative of the genus Tetraneuromyia ( Jaschhof & Jaschhof 2013)  , is close to T. moldaviensis (Spungis)  as indicated by male genital morphology. In both these species, gonocoxal processes are greatly developed ( Jaschhof & Jaschhof 2013: fig. 78 C; this paper, Fig. 7View FIGURE 7 C, ↓) and tegmen processes are larger than is average in this genus ( Jaschhof & Jaschhof 2013: fig. 78 B; this paper, Fig. 7View FIGURE 7 D, ↓). As for interspecific differences, there are 2 pairs of long tegmen processes in T. moldaviensis  ( Jaschhof & Jaschhof 2013: fig. 78 B), but only 1 such pair in T. wilksae  (Fig. D, ↓); the gonostylus apex is broadly rounded in T. moldaviensis  ( Jaschhof & Jaschhof 2013: fig. 78 A), but pointed in T. wilksae  (Fig. A, ↓); and the posterior margin of ninth tergite is slightly concave in T. moldaviensis  ( Jaschhof & Jaschhof 2013: fig. 78 C), but deeply emarginate in T. wilksae  (Fig. B, ↓).

Other male characters. Body size 1.4 mm. Head. Eye bridge 1–3 ommatidia long dorsally. Scape and pedicel concolorous with flagellum. Neck of fourth flagellomere 1.8 times longer than node; circumfilum as typical in Tetraneuromyia ( Jaschhof & Jaschhof 2013)  . Palpus as long as head height. Thorax. Anepisternum asetose. Wing. 3.0 times longer than wide. M absent. CuA 1 faint. Legs. Basitarsi, claws, and empodia as typical in Tetraneuromyia  . Tarsi not white-tipped. Terminalia ( Fig. 7View FIGURE 7). Ninth tergite well sclerotized, especially medioposteriorly (Fig. B). Gonocoxal emargination small, U-shaped (Fig. C). Gonostylus bent inwards (Fig. A). Tegmen (Fig. D): only ventral processes greatly developed, pointed, strongly curved ventrally, dorsal processes rudimentary, blunt-ended, directed dorsally. Ejaculatory apodeme very long, with pointed, weakly sclerotized apex (Fig. C).

Etymology. This species is named after Anne Wilks, Ullevi, Öland.

Types. Holotype. Male (CEC 74), Sweden, Uppland, Östhammar, Andersby Nature Reserve SW Österbybruk, mixed deciduous / coniferous forest, 10 Sep. 2005, sweepnet & aspirator, M. Jaschhof (in NHRS). Paratype. Male (CEC 75), same data as the holotype.


Swedish Museum of Natural History, Entomology Collections