Monepidosis shikokuensis, Jaschhof, 2016

Jaschhof, Mathias, 2016, New species of Monepidosis Mamaev, 1966 and Antipodosis gen. nov., a closely related genus from New Zealand (Diptera, Cecidomyiidae), European Journal of Taxonomy 192, pp. 1-24 : 21-22

Monepidosis shikokuensis sp. nov.

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Figs 1B , 12 A–B

Diagnosis

Parameres and ejaculatory apodeme of this highly unusual Monepidosis are merged into a single complex structure ( Fig. 12A ). The portions of parameral origin, which encircle the ejaculatory apodeme, include vestigial tusks that are curved dorsally (↓). The ejaculatory apodeme is forked into 4 long prongs (↓), of which the laterals have finely serrate apices. The structure of gonostyli and gonocoxites is also exceptional in M. shikokuensis sp. nov. (see section ‘Other characters’, Fig. 12B ).

Etymology

The name shikokuensis , an adjective, is derived from Shikoku, one of the main islands of Japan, where this species was found.

Type material

Holotype

JAPAN: Ƌ, Shikoku, Kochi, Asakura , 33.55° N, 133.47° E, secondary growth of mixed evergreen deciduous / coniferous forest, 4–11 Nov. 1998, Malaise trap, M. & C. Jaschhof ( KUEC).

Other characters

BODY LENGTH. 1.6 mm.

HEAD. Eye bridge 5–6 ommatidia long dorsally. Circumfila on flagellomeres 1–12. Neck of fourth flagellomere 2.1 times longer than node. Palpus 1.3 times longer than height of head.

WING ( Fig. 1B ). Length/width 3.2.

LEGS. Empodia rudimentary.

TERMINALIA ( Fig. 12 A–B). Gonostylus flattened, slightly curved, tapered towards apex, without apical spine (↓, Fig. 12B ). Gonocoxites ( Fig. 12B ): processes missing; ventral emargination unusually large,

with broad, medially raised microtrichose rim basally (↓); apodemes approach each other. Base of ejaculatory apodeme sclerotized, widened ( Fig. 12A ).

Distribution and phenology

Japan (Shikoku). Known from a single specimen collected in evergreen secondary growth in November.

Figures

Fig. 1. Male morphology of Antipodosis gen. nov. and Monepidosis Mamaev, 1966. A. Wing of A. granvillensis gen. et sp. nov., holotype, setae omitted. B. Wing of M. shikokuensis sp. nov., holotype, setae omitted. C. Fourth flagellomere of A. rakiura gen. et sp. nov., holotype, lateral. D. Fourth flagellomere of M. scepteroides sp. nov., holotype, lateral. Scale lines: A–B = 0.50 mm, C–D = 0.05 mm.

Fig. 12. Monepidosis shikokuensis sp. nov., Ƌ, holotype. A. Parameres and ejaculatory apodeme, ventral. B. Genitalia, ventral. Scale lines: 0.05 mm.