Cratyna (Cratyna) flagriola 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 : 457-460

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

( Fig. 5 A–C)

Type locality: Queensland, near Cairns, Palm Cove , mangrove forest at the coastline.

Holotype: Male, 3.vii.2000, caught by net, leg. W. Mohrig (PWMP).

Description. Male. Head. Yellowish-brown. Eye bridge 3–4 facets wide. Antennal flagellomeres with long necks and very long cecidomyiid-like bristles, arranged in three nearly circular whorls; 4th flagellomere with l/w index of 1.5, bristles about 3 times longer than the diameter of the basal node, neck as long as the basal node, pale but darkened at the tip; palpus short, three-segmented; basal segment larger, with 3 bristles and a patch of long sensillae. Thorax. Ochrous, with darker spots on lateral sclerites. Scutum with rather fine hairs and some longer lateral bristles; scutellum with 4 longer marginal bristles. Postpronotum bare. Wing pale, R1 =3/4 R, joining C before the M-fork; R5 with ventral macrotrichia in the apical third; y longer than x and with 2–3 macrotrichia; posterior veins without macrotrichia. Haltere short, brownish. Coxae and femora yellowish, tibiae and tarsi darkened; legs rather long; fore tibia with a large patch of dark bristles at the inner apex; spurs of middle and hind tibiae equally long and much longer than the diameter of the apex; claws toothless. Abdomen. Brown. Hypopygium brown; gonocoxite short and as long as gonostylus, with a long, fine ventral bristle, at the inner ventral margin rather sparsely haired; gonostylus large and ovoid, on the inner side with two pairs of hyaline spines, widely separated from each other. Tegmen somewhat broader than long, rounded, with a weak inner semicircular structure and a short finger-like protuberance. Aedeagus short. Body length: 2.6 mm.

Comments. This new species is characteriZed by long necks and long, circular arranged whorls of bristles on the flagellomeres, a 3-segmented palpus and an ovoid gonostylus with 2 pairs of hyaline spines. The unique cecidomyiid-like flagellomeres are typical for several species found in the Malay Archipelago (Hippa et al. 1998, as Pseudozygoneura ), Papua New Guinea (Mohrig 1999) and Central America (Mohrig 2003). The species is similar to Cr. flagriantennata Mohrig from Papua New Guinea (Mohrig 1999). It differs because of a broader space between the two pairs of spines at the apex of the gonostylus, a three-segmented palpus and a yellow body colour.

Figures

FIGURE 5. Cratyna (Cratyna) flagriola Mohrig & Kauschke sp. n. A. Hypopygium; B. Pedicel and flagellomeres 1 – 4; C. ApeX of fore tibia.