Peromyia cinalata, 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 : 50-51

Peromyia cinalata sp. n.

( Fig. 8 A-C)

Diagnosis:

Peromyia cinalatacinalata is tentatively assigned to the modestamodesta group, because of the presence of two whorls of hair-shaped sensilla on the antennal flagellomeres ( Fig. 8A ), large gonocoxites and thick, subcylindrical gonostyli ( Fig. 8B ). The whorl of short sensilla is irregular and situated subbasally on the flagellomere nodes ( Fig. 8A ), which is unusual among the species of the modesta group (but see above Peromyia debilis , Fig. 7A ). The slender tegmen with weak ventral plate in P. cinalatacinalata is also atypical of this group and more often found among species of the Peromyia san-

guinea (KIEFFER)) group (cf. JASCHHOF 1998 ). Grey-tinged wings is another unusual character of P. cinalata and to my knowledge unknown in any other Peromyia .

Description:

Male. Body size: 1.0 mm.

Head: Postfrons asetose. Eye bridge 2-3 ommatidia long. Postocular bristles in 1 irregular row. Neck of fourth antennal flagellomere longer than node ( Fig. 8A ). Node subglobular, with short subbasal setae intermingled with 1 irregular whorl of short hair-shaped sensilla, 1 mesal double whorl of long setae, and 1 irregular distal whorl of long hair-shaped sensilla. Maxillary palpus 3- 4-segmented, first and second segments with hair-shaped translucent sensilla.

Wing: AntC ending at juncture with R5. ApicR1 = 2.5-3.0 times the length of Rs. Wing membrane with grey tinge, possibly resulting from unusually dense, thick microtrichia. Legs: Pretarsal claws without teeth.

Terminalia: Sclerotization of tg9 not interrupted mesally. Gonocoxites long, with poorly sclerotized, asetose basal portion, ventral emargination broadly U-shaped, not extending to midlength ( Fig. 8B ). Gonostylus large, thick, subcylindrical ( Fig. 8B ). Tegmen slender, elongate, slightly tapering towards apex, rounded apically; ventral plate weak, subtriangular, with indistinct basal and distinct apical margins ( Fig. 8C ). Cerci large, setose. St10 weak, apparently one-lobed, sparsely pubescent.

Female and preimaginal stages: Unknown.

Etymology:

The name is Latin, composed of cinis, ash, and alatus, winged, and refers to the grey-tinged wings of this species.

Types:

Holotype: Male, Australia, Tasmania, Southwest National Park, Wedge Creek , 21 Feb.-1 March 2006, Malaise trap, N. JÖNSSON, T. MALM & D. WILLIAMS (in AMS) . Paratypes: 1 male, same data as the holotype ; 1 male, Tasmania, Warra LTER site, Manuka Road , 17 March 2004, Malaise sample FT30518, R. BASHFORD (in NHRS and SDEI) .

Figures

Fig. 8: Peromyia cinalatacinalata sp. n., holotype male. – A: fourth antennal flagellomere, lateral view; - B: terminalia, ventral view; - C: tegmen, ventral view. Length of scale bar = 0.05 mm.

Fig. 7: Peromyia debilis sp. n., holotype male. – A: fourth antennal flagellomere, lateral view; - B: terminalia, ventral view; - C: tegmen, ventral view. Length of scale bar = 0.05 mm.