Styringomyia naso 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 : 1602-1603

Styringomyia naso THEISCHINGER & BILLINGHAM nov.sp. (Figs 52-55)

T y p e m a t e r i a l. Holotype ♂: Australia, Queensland, Moses Ck 4 km N by E of Mt Finnigan, 15-x-1980, at light, D.H. Colless ( ANIC) . Paratypes: Queensland: 1♂, 1 sn, Bamboo Ck, near Miallo , N of Mossman, 25-iv-1967, D.H. Colless ( ANIC) ; 2♂♂, 5♀♀, 12.44°S / 143.14°E, 3km ENE of Mt Tozer , 28-vi-4-vii-1986, malaise trap, D.H. Colless ( ANIC) ; 1 sn, 12.43°S / 143.17°E, 9 km ENE of Mt Tozer , 5-10-vii-1986, malaise trap, D.H. Colless ( ANIC) ; 1♀, 12.43°S / 143.18°E, 11 km ENE of Mt Tozer , 11-16-vii-1986, malaise trap, D.H. Colless ( ANIC) .

D e s c r i p t i o n

Male (Figs 52-54)

Head. Greyish brown and pale greyish yellow; palps yellowish brown, antennae with scape and pedicel largely brown and flagellum greyish yellow.

Thorax. Nota brownish grey to blackish brown, spotted with dull yellow and pale brown, scutellum rather light to bright yellow; pleura pale greyish yellow, sterna dull yellow to pale yellowish brown. Legs largely dull yellow, femora with two wide greyish brown to brownish black rings, one before (hindleg) to past midlength (pro- and mid-leg) and one subapical, tibiae with a greyish brown ring before midlength and apex greyish brown, and the tarsal segments with more or less distinctly darkened apex and last tarsal segment and claws grey to blackish brown.

Wings. Faintly yellowish-tinged with darker greyish clouds over cross-veins, particularly r-m, the apex of the discoidal cell and at some longitudinal vein endings. Halters dark yellow.

Abdomen. Dorsally dull yellow to brownish yellow, all tergites distinctly darker along apical and lateral margins; sternites dull yellow.

Hypopygium. Tergite 9/10 trapezoidal, apically narrower with tip rather long and narrowly rounded. Apical half of sternite 9 parallel sided to trapezoidal, apically rounded with tip slightly bilobed by shallow posteromedian excision, at least one rather long subapical seta each side. Gonocoxites short, largely stout with only apical one sixth thin, a long thick apical spine and a markedly thinner subapical spine. Gonostyli complex, apparently including two sausage-shaped elements, one very short and thin and the other moderately long and thicker, two rather short comb-shaped elements, a long whip-like element with basal half much thicker than apical half, approximately ten setae at the end of basal section and long subapical seta, and a massive flat element, laterally rather sinuous but the mesal face with strong spine-like nose at about midlength well separated from a more basal wide tooth which is again separated from an even more basal narrow tooth; the apex of the massive element denticulate. What can be detected in ventral view of the aedeagus appears slightly bilobed to possibly trilobed.

Dimensions. Wing length 3.0-5.0 mm.

Female (Fig. 55)

Head, Thorax and Abdomen. Coloration much as in male except for the more posterior portion of abdomen which usually appears very dark (egg development).

Terminalia. Cerci bifurcate, each lobe bearing an apical spine and reaching backward beyond the tips of the hypogynial valves.

Dimensions. Wing length 3.0- 4.7 mm.

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. Naso (= Latin, ablative singular of nasus) meaning with a nose referring to the nose on the largest element of the gonostyli.

D i s c u s s i o n. The male of Styringomyia naso nov.sp. appears close to S. ensifera EDWARDS, 1924 (Fig. 56), S. ensiferoides ALEXANDER, 1947 and S. multisetosa ALEXANDER, 1963 (Fig. 57), all from New Guinea. The distinct spine-shaped nose close to the remaining mesal armature of the most prominent element of the gonostyli is diagnostic for S. naso .

Figures

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