Aprionus fontanus sp. nov.

urn:lsid:zoobank.org:act: 0742E67D-D01A-433D-A76E-98ABBB654340

Fig. 14

Diagnosis

A combination of male genitalic characters is diagnostic of Aprionus fontanus sp. nov., as follows (Fig. 14A). The long tegmen is sharply pointed apically (↓), undoubtedly a firm shape considering that the margins are reinforced. The apical portion of the gonostylus is strongly bent dorsally to dorsolaterally (↓); the gonostylar tooth is flattened; 2 strong bristles are inserted medially. The subrectangular ventral plate has a characteristic pattern of dark markings, including an inverted V-shape medially on the anterior edge.

Etymology

The species epithet, fontanus, is a Latin adjective meaning ‘belonging to the spring’.

Material examined

Holotype

GERMANY: ♂, Bavaria, Berchtesgaden National Park, Schapbach alp, Schapbach, 1150 m a.s.l., emergence trap, I. Schrankel leg., 21 Jun. 1996 (DEI, no. A7655).

Differential diagnosis

Aprionus angeloides Jaschhof, 1997, a species known from Swedish Lapland, bears a faint resemblance to A. fontanus sp. nov., in particular regarding the outline of the gonostylus and tegmen (see Jaschhof 1998: fig. 148).

Other characters

Body size 1.2 mm.

HEAD. Postfrons setose. Eye bridge 2–3 ommatidia long dorsally. A sparse row of 7 postocular bristles. Neck of fourth flagellomere slightly longer than node, translucent sensilla simply hair-shaped (Fig. 14B). Palpus 3-segmented, apical segment longest of all.

WING. ApicR 1 3.0 times as long as Rs.

LEGS. Claws subrectangular, toothless. Empodia rudimentary.

TERMINALIA (Fig. 14A). Ninth tergite subrectangular, anterior margin fully sclerotized. Gonocoxites rounded rather than pointed ventroposteriorly; dorsal bridge extends far anteriorly, subtrapezoid.

Distribution and phenology

Germany (Bayern). This species is known from a single specimen found in the course of an inventory of springs and spring biota in the Berchtesgaden National Park (see http://alpenquellen.com/projektgebiet_ berchtesgaden.htm, accessed 26 Nov. 2016).