Gynapteromyia tasmanica Jaschhof

Jaschhof, Mathias, 2016, A review of world Diallactiini (Diptera, Cecidomyiidae, Winnertziinae), with the description of six new genera and seventeen new species, Zootaxa 4127 (2), pp. 201-244 : 217-219

Gynapteromyia tasmanica Jaschhof sp. nov.

Fig. 8A–G

Diagnosis. This is the only species of Gynapteromyia whose palpus is, at least in some individuals, longer than head height and whose claws are toothed. Male genitalic structures (Fig. A) are unusual in that the gonostylar tooth is thick-coniform and the tegmen apex is convex, without prominent corners (↓). The gonostylus is conspicuously long, slender, and markedly curved (↓).

Other characters. Male body length 1.8–1.9 mm. Head. Genal setae 3–5. Eye bridge 2–3(–4) ommatidia long dorsally. Scape with 2 setae. Neck of fourth flagellomere (Fig. C) 1.5 times longer than node; node with only basal microtrichia. Apical segment of labellum twice as broad as basal segment. Palpus (Fig. E) 0.9–1.2 times longer than head height, 4 segments, first to third segments with hair-shaped translucent sensilla. Wing length / width 2.5– 2.7 (Fig. B). Setae only on distal half of membrane. Costal break indistinct or absent. Vein btv without setae. CuA extending to wing margin. Genitalia (Fig. A). Gonocoxae: ventral emargination narrow; ventral bridge unsetose, with weak transverse suture; protrusions of medial bridges inconspicuous, rounded, with moderately dense short microtrichia (↓); anterior processes of apodemes about as long as distance separating them. Parameral apodemes large. Ejaculatory apodeme longer and thinner than in most other Gynapteromyia .

Female body length 2.1–2.2 mm. Head. Flagellomeres pear-shaped, with short necks (Fig. D), sensory hairs with hooded alveoli only on distal flagellomeres, microtrichia dense basally, very sparse elsewhere. Apical segment of labellum three times as broad as basal segment. Palpus 1.3 times longer than head height. Ovipositor as in Fig. F. Two sclerotized spermathecae, flattened, ovoid, with numerous tiny membranous windows (Fig. G). Etymology. The species epithet refers to the occurrence of this species in Tasmania.

Type material. Holotype. Male, Australia, Tasmania, Warra, Mt. Weld, 400 m, mixed forest, 22 Jan. 2002, Malaise trap, N. Doran & R. Bashford (in AMS). Paratypes. 6 males, 5 females, Warra Longterm Ecological Research ( LTER) site, Manuka road, bird observation track, old-growth forest, 7 Dec. 2007 – 7 Jan. 2008, Malaise trap, M. & C. Jaschhof; female, same as previous site, 7 Dec. 2007, Malaise trap, R. Bashford (all in AMS).

Figures

FIGURE 8 A – G. Gynapteromyia tasmanica. A: Male genitalia, ventral (holotype). B: Wing (paratype). C: Male fourth flagellomere, lateral (holotype). D: Female fourth flagellomere, lateral (paratype). E: Palpus, lateral (holotype). F: Ovipositor, lateral (paratype). G: Spermathecae, lateral (paratype). Scales for A, C – G, 0.05 mm, for B, 1.0 mm. Bc = basicercus, dc = disticercus, gx = gonocoxa, sg = segment.