Antipodosis australis Jaschhof, 2016, gen. et sp. nov.

Antipodosis australis gen. et sp. nov.

urn:lsid:zoobank.org:act: 45076E74-E261-4A53-804F-8264851F5133

Fig. 2 A–B

Diagnosis

A combination of genitalic characters is specific to A. australis sp. nov., as follows (Fig. 2 A–B). Of the gonocoxites (Fig. 2A), the processes are small but prominent (↓); the ventral emargination, whose shape is reminiscent of an inverted bell, has a broad glabrous rim that almost reaches the anterior gonocoxal margin (↓), and the apodemes are merged into a large subrectangular plate (↓). The ejaculatory apodeme has a distinct subapical extension (↓, Fig. 2B).

Differential diagnosis

Antipodosis australis gen. et sp. nov. resembles A. pureora gen. et sp. nov. in having elongate, slender gonostyli; a long, plate-like gonocoxal apodeme; two pairs of unmodified parameral tusks, and a singlepointed, straight ejaculatory apodeme. Characters to differentiate between the two species are provided by the gonocoxal emargination, which in A. australis gen. et sp. nov. is bell-shaped (Fig. 2A) and in A. pureora gen. et sp. nov. U-shaped (Fig. 5A), and by the ejaculatory apodeme, whose base is flattened in A. australis gen. et sp. nov. (not visible in the ventral view depicted in Fig. 2B) and widened in A. pureora gen. et sp. nov. (Fig. 5B).

Etymology

The name australis is a Latin adjective meaning ‘southern’, which refers to the distribution of this species in the two southern main islands of New Zealand.

Type material

Holotype

NEW ZEALAND: Ƌ, South Island, Buller, Lake Rotoroa, mixed podocarp / southern beech forest, 450 m, 15 Jan. 2001, Malaise trap “15”, Department of Conservation St. Arnaud (NZAC).

Paratype

NEW ZEALAND: 1 Ƌ, Stewart Island, Christmas Village Hut, 46.74° S, 167.97° E, 18 Jan. 2000, Malaise trap, R.K. Didham (NZAC).

Other characters

BODY LENGTH. 2.0 mm.

HEAD. Eye bridge 5–6 ommatidia long dorsally. Circumfila on flagellomeres 1 to 13–14. Neck of fourth flagellomere 1.8–1.9 times longer than node. Palpus as long as height of head.

WING. Length/width 3.0–3.1.

LEGS. Empodia rudimentary.

TERMINALIA (Fig. 2 A–B). Ninth tergite subtrapezoid, medially unsclerotized, asetose. Gonostylus strongly tapered towards apex, pectinate tooth narrow (Fig. 2A). Gonocoxites with small protuberances on ventroposterior margin; apodemes protrude clearly beyond ventroanterior margin (Fig. 2A). Ventral parameral tusks bent dorsolaterally, dorsal tusks bent dorsally (Fig. 2B).