Styringomyia coronata 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 : 1599-1600

Styringomyia coronata THEISCHINGER & BILLINGHAM nov.sp. ( Fig. 44 )

T y p e m a t e r i a l. Holotype ♂: Australia, Queensland, Upper Freshwater Ck, Whitfield Range nr Cairns, 15-xii-1974, Moulds (AM). Paratype: 1♀, same data as holotype (AM).

D e s c r i p t i o n (of the unique male ( Fig. 44 ) preserved in ethanol, therefore much discoloured/bleached which is reflected in the overall description)

Head. Including rostrum, palps and antennae pale yellowish brown.

Thorax. Pale yellowish brown.

Wings. Infumed pale yellowish brown.

Abdomen. Pale yellowish brown.

Hypopygium. Tergite 9/10 long and wide, largely parallel sided with ear-like expansions in third quarter of its length. Sternite 9 widely trapezoidal, almost hemispherical ending corona-shaped in three narrow lobes, the median very long and narrow, the lateral ones strongly setose; two very long moderately strong subapical setae. Gonocoxites evenly curved, almost conical with basal two thirds distinctly but not particularly expanded and with rather slim apical spine and abundant setae along all of mesal face. Gonostyli a single element represented by a slightly curved lobe triangularly expanded subbasally, with abundant setae and two large apical spines and one subapical bearing a secondary spine. What is detectable of the aedeagus appears long and very narrow.

Dimensions. Wing length 4.3 mm.

Female

Head, Thorax and Abdomen. Coloration even paler than in male.

Terminalia lost.

Dimensions. Wing length 4.5 mm.

D i s t r i b u t i o n. North-eastern; known only from Queensland ( Map 3 ).

E t y m o l o g y. Coronatus (=Latin, participle perfect) meaning crowned and referring to the distinctly trifid sternite 9 of the male.

D i s c u s s i o n Styringomyia coronata nov.sp., S. bipunctata and S. williamsi nov.sp. are a closely-knit group of species with sternite 9 of male ending in three small extensions and tergite 9 very long with ear-like lateral extensions (see also under S. bipunctata ). S. coronata can be distinguished from both, S. bipunctata and S. williamsi , by having the three extensions of sternite 9 longer and the thinner apical portion of the gonocoxites markedly longer.

Figures

Map 3: Distribution of the species of the Styringomyia bipunctata group: S. bipunctata, S. williamsi, S. coronata.

Fig. 44: Styringomyia coronata nov.sp., male, terminalia, ventral.