Antipodosis rakiura, 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 : 11-12

Antipodosis rakiura gen. et sp. nov.

urn:lsid:zoobank.org:act:7D191604-3021-4E5E-9E8D-DDD34DC58310

Figs 1C , 6 A–B

Diagnosis

A character readily distinguishing A. rakiura gen. et sp. nov. from all other Antipodosis gen. nov. is that the dorsal portions of the parameres are merged into a rhomboid shaped plate (↓, Fig. 6B ), with the result that only one pair of tusks remains ventrally. Other genitalic structures distinctive of this species are the gonostylus, which is swollen on the basal two thirds and flattened on the apical third (↓, Fig. 6A ), and the gonocoxites, which have prominent, rectangular processes (↓).

Etymology

The species epithet rakiura is identical with the Maori name commonly used for Stewart Island where this species was found.

Type material

Holotype

NEW ZEALAND: Ƌ, Stewart Island , Murray Beach, 46.78° S, 168.00° E, 20 Jan. 2001, Malaise trap, R. K. Didham ( NZAC).

Other characters

BODY LENGTH. 2.0 mm.

HEAD. Eye bridge 4–5 ommatidia long dorsally. Circumfila present on flagellomeres 1–12. Neck of fourth flagellomere 1.6 times longer than node. Palpus 1.2 times longer than height of head.

WING. Length/width 2.8.

LEGS. Empodia rudimentary.

TERMINALIA ( Fig. 6 A–B). Ninth tergite broadly rounded posteriorly, only medially sclerotized. Gonostylar apex broadly rounded, pectinate tooth wide ( Fig. 6A ). Gonocoxites ( Fig. 6A ): ventral emargination small, perfectly U-shaped, with glabrous rim basally; dorsal portions with subtriangular projections on posterior margin; apodemes short, bilobed anteriorly. Ejaculatory apodeme ( Fig. 6B ): apex pointed, straight; base flattened; accessory gland ducts unusually distinct. Parameral tusks curved dorsolaterally; parameral apodemes small ( Fig. 6B ).

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. 6. Antipodosis rakiura gen. et sp. nov., Ƌ, holotype. A. Genitalia, ventral. B. Parameres and ejaculatory apodeme, ventral. Scale lines: 0.05 mm.