Peromyia warraensis, Jaschhof, 2010

Jaschhof, Mathias, 2010, New species of Peromyia from Tasmania, with a revision of S´s and S´s types of Australian Micromyinae (Diptera: Cecidomyiidae), Beiträge Zur Entomologie = Contributions to Entomology 60 (1), pp. 33-55 : 43-45

Peromyia warraensis sp. n.

( Fig. 4 A-B)

Diagnosis:

Within the Peromyia dissonadissona group, P. warraensiswarraensis and P. praeclarapraeclara (see JASCHHOF & JASCHHOF 2004: 118 f.) are the only species possessing bilobed gonostyli. Even so, the gonostylus structure in these two species is fundamentally different: while the subbasal lobe in P. warraensis emerges from the dorsal surface of gonostylus, it emerges from the ventral surface in P. praeclara . Further differences lie in the outline of gonocoxites and tegmen. For instance, the ventral emargination of gonocoxites is shallow in P. warraensiswarraensis and deep in P. praeclara , and the tegmen is short and rounded in P. warraensiswarraensis and long and pointed in P. praeclara .

Description (mentioned are only those features which differ from that in P. grovei ):

Male. Head: Maxillary palpus 4-segmented, first segment with hair-shaped translucent sensilla.

Wing: AntC ending at juncture with R5. ApicR1 = 3.0-3.5 times the length of Rs.

Terminalia: Sclerotization of tg9 not or only insignificantly interrupted mesally. Ventral emargination of gonocoxites wide and shallow, not reaching to midlength ( Fig. 4A ). Gonostylus bilobed, ventral lobe elongate, with dense brush of apical setae, dorsal lobe attached subbasally, sparsely setose ( Fig. 4A ). Tegmen small, weakly membranous, shorter than gonocoxites, slightly tapering towards apex, rounded apically; ventral plate barely traceable, its basal margin deeply incised, apical margin situated just below tegmen apex ( Fig. 4B ).

Female and preimaginal stages. Unknown.

Etymology:

The name is derived from the type locality, Warra.

Types:

Holotype: Male, Australia, Tasmania, Warra LTER site, Mt Weld , 27 Feb. 2001, Malaise sample FT26, N. DORAN & R. BASHFORD (in AMS) . Paratypes: 1 male, same data as the holotype ; 1 male, same data but sample FT19 ; 1 male, Warra LTER site, Manuka Road, 17 March 2004, Malaise sample FT30518, R Bashford ; 2 males, same locality but 1 March 2005, samples FT35682 and 35685, respectively (in AMS and SDEI) .

Species of Peromyia belonging to various other groups

Figures

Fig. 4: Peromyia indecorata sp. n., male. – A: terminalia, ventral view (holotype); - B: tegmen, ventral view (paratype). Length of scale bar = 0.05 mm.