Styringomyia danbulla THEISCHINGER & BILLINGHAM, 2018

Theischinger, Günther, D, Zacariah & Martin, John, 2018, The genus Styringomyia LOEW in Australia (Diptera: Tipuloidea: Limoniidae), Linzer biologische Beiträge 50 (2), pp. 1587-1633 : 1604

Styringomyia danbulla THEISCHINGER & BILLINGHAM nov.sp. (Figs 58, 59)

T y p e m a t e r i a l. Holotype ♂: Australia, Queensland, Mt Edith Forest Road 1½ m. off Danbulla Road, 6-v-1967, D.H. Colless (ANIC). Paratypes: Queensland: 1♂, same data as holotype (ANIC).

D e s c r i p t i o n

Male (Figs 58, 59)

Head. Including rostrum, palps and antennae medium to dark brown.

Thorax. Nota generally brownish yellow to dark brown; scutum widely paler along midline, seamed rather narrowly by markedly darker. Pleura and sterna pale greyish yellow to brownish yellow. Legs greyish yellow to brownish yellow; indistinct, rather wide slightly darker rings in pro- and mesofemur past midlength and apically, in pro- and mesotibia before midlength and apically; such rings hardly detectable in hindleg; apical tarsal segments greyish brown in all legs.

Wings. Very slightly infumed with pale yellowish grey. Halters pale brownish grey.

Abdomen. Dull greyish yellow.

Hypopygium. Apical half of tergite 9/10 setose, approximately parallel sided, truncate, posteromedially topped with rounded lobe. Apical half of sternite 9 setose, obtusely subtriangular. Gonocoxites with basal five sixths wide, apical sixth very narrow, bearing an apical and dorsally a subapical substantial spine. A third dorsal spine of similar size, close to the end of the expanded basal section. Gonostyli including two large elements with abundant retrose setae, one very long, mesobasally widely rounded, apically rather pointed with a long subapical seta, the other shorter and more squarish, and two smaller elements, the more posterior a curved blade with long thick setae and the more anterior a thin rod with claw-like apex. Aedeagus small with apex rounded and somewhat bowed ventrally.

Dimensions. Wing length 4.1-4.4 mm.

Female unknown.

D i s t r i b u t i o n. North-eastern; known only from Queensland ( Map 4 ).

E t y m o l o g y. Named after an area close to the type locality. Danbulla is used as a noun in apposition to the generic name.

D i s c u s s i o n Styringomyia danbulla nov.sp. does not appear close to any other Australian species. There are, however, two similar species known from New Caledonia, S. neocaledoniae ALEXANDER, 1948 (Fig. 60), and S. bidentata HYNES, 1987 (Fig. 61). One apical, one subapical and one more basal dorsal spine on the gonocoxites distinguish male S. danbulla from S. neocaledoniae [basistyle (=gonocoxite) terminating in two modified setae] and from S. bidentata [basistyle (=gonocoxite) terminating with small thick tubercle bearing two long, modified setae, the bases of which are contiguous]. Also, the largest element of the male gonostyli of S. danbulla is basally markedly wider and apically markedly narrower than in both New Caledonian species. Three spines on the gonocoxites, as in S. danbulla , are present in S. idioformosa HYNES, 1987 (Fig. 62) from the Solomon Islands.

Figures

Map 4: Distribution of the ungrouped Styringomyia species: S. rose, S. flagro, S. naso, S. danbulla, S. kimberley.