Japoplusia honshuensis 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 : 225

Japoplusia honshuensis Jaschhof sp. nov.

Fig. 11A–D

Diagnosis. This species is readily distinguishable from all other Diallactiini by the male genitalic characters referred to in the generic diagnosis of Japoplusia .

Male description. Body length 2.6 mm. Head. Postgenal setae about 15, loosely clustered. Eye bridge 6–7 ommatidia long dorsally. Scape and pedicel lighter than flagellum, scape with 2 setae, pedicel unsetose. 12 flagellomeres retained. Neck of fourth flagellomere (Fig. C) 1.2 times longer than node; node with short setae intermingled with short hair-like translucent sensilla basally, a crenulate whorl with long sensory hairs with hooded alveoli medially, more such sensory hairs scattered distally, especially ventrally, numerous short hair-like translucent sensilla distally, microtrichia dense basally, sparse elsewhere. Clypeus unsetose. Palpus as long as head height, 4 segments, first to third segments with hair-shaped translucent sensilla, fourth segment as long as second and third segments together. Thorax. Both scutal and scutellar setae sparse. Wing length 2.7 mm (Fig. D). Length / width 2.8. Membrane completely covered with setae. Costal break distinct; btv slightly angled, setose; both M1+2 and M4 absent. Legs with narrow scales in addition to setae. Basitarsi without spine. Tarsi brighter than proximal segments, most pronounced in hindleg. Claws slightly bent, untoothed. Empodia vestigial. Genitalia (Fig. B). The bridge formed by ninth tergite longer medially than laterally, with long setae. Gonocoxae massive; ventral portions elongated posteriorly to form trapezoid lobes; ventral bridge with narrow depression along median; ventral emargination V-shaped, edges sclerotized; medial bridges with membranous outgrowth occupying parts of the emargination (only indicated on right side in Fig. B); apodemes unusually broad, long, broadly interconnected shortly before their anterior ends. Parameral apodemes form long crescents. Ejaculatory apodeme moderately long, with the apex strongly inclined dorsally; exact outline of the medial broadening unresolved.

Etymology. The species epithet refers to Honshu, where the only specimen known of the new species was collected.

Type mateial. Holotype. Male, Japan, Honshu, prefecture Aomori, Shichinohe, in old-growth mixed deciduous forest predominated by buna (Japanese beech), 300-400 m, 28 July 1999, sweepnet, M. Jaschhof (in KUEC).

Figures

FIGURE 11 A – D. Japoplusia honshuensis (holotype male). A: Gonostylus, ventral. B: Genitalia, ventral. C: Fourth flagellomere, lateral. D: Wing. Scales for A – C, 0.05 mm, for D, 1.0 mm.