Cratyna (Cratyna) flavothoracica Mohrig & Kauschke, 2017

Mohrig, Werner, Kauschke, Ellen & Broadley, Adam, 2017, Black fungus gnats (Diptera: Sciaridae) of Queensland, Australia. Part I. Genera Chaetosciara Frey, Corynoptera Winnertz, Cratyna Winnertz, Epidapus Haliday, Keilbachia Mohrig, Lobosciara Steffan, Phytosciara Frey and Scatopsciara Edwards, Zootaxa 4303 (4), pp. 451-481 : 460-461

Cratyna (Cratyna) flavothoracica Mohrig & Kauschke sp. n.

( Fig. 6 A–B)

Type locality: Australia, Queensland, Mt Lewis , 37 km WSW of Port Douglas, 16°35´S, 145°16´E, wet tropics. Holotype: Male, 8.viii.1997, Malaise trap, leg. J. Seymour ( PWMP).

Paratype: 1 male, same data as holotype ( PWMP).

Description. Male. Head. Brown. Eye bridge 4 facets wide. Antennal flagellomeres covered rather densely with long bristle-like hairs, necks rather long; 4th flagellomere with l/w index of 2.0, necks somewhat shorter than the basal node, pale but darkened at the tip; setae about 2 times longer than the diameter of the basal node. Palpus short, 2-segmented; basal segment longer, with 1–2 bristles and a patch of sensillae. Thorax. Yellowish-brown. Scutum with rather short hairs, with some longer prescutellar and lateral bristles; scutellum with 4 longer marginal bristles. Postpronotum bare. Wing somewhat brownish, R1 =4/5 R, joining C before the M-fork; R5 without ventral macrotrichia; y longer than x, without macrotrichia; M1 and M2 weak, posterior veins without macrotrichia. Haltere short, brownish. Legs yellowish, tarsi darkened; legs rather long; fore tibia with a large patch of dark bristles at the inner apex; spurs of middle and hind tibiae equal and much longer than the diameter of the apex; claws toothless. Abdomen. Brownish. Hypopygium brown; gonocoxite short and as long as gonostylus, with a long, strong, fine bristle on the ventral apex, the inner margin with rather long hairs; gonostylus large, somewhat concave on the inner side and with two pairs of widely separated hyaline spines. Tegmen broader than long, rounded, with an inner semicircular structure and a short finger-like protuberance apically. Aedeagus short and narrow. Body length: 2.4 mm.

Comments. The species is characteriZed by long flagellomeres, a two-segmented palpus, and a gonostylus that is strongly concave on the inner side and with two pairs of hyaline spines. See also comments under Cr. pullata .

Figures

FIGURE 6. Cratyna (Cratyna) flavothoracica Mohrig & Kauschke sp. n. A. Hypopygium; B. Flagellomeres 3 – 5.