Peromyia grovei, 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 : 39-40

Peromyia grovei sp. n.

( Fig. 1 A-C)

Diagnosis:

Peromyia groveigrovei is characterized by a combination of male genitalic characters as follows. The ventral emargination extends to the midlength of gonocoxites ( Fig. 1B ), the gonostyli are flattened and excavated mesally ( Fig. 1B ), and the tegmen has dark lateral stripes ( Fig. 1C ).

Description:

Male. Body size: 0.7-0.8 mm. Head: Postfrons asetose. Eye bridge 2-3 ommatidia long. Postocular bristles in 2 rows. Neck of fourth antennal flagellomere longer than node ( Fig. 1A ). Node subglobular, with 1 basal whorl of short hair-shaped sensilla, short subbasal setae, 1 mesal single to triple whorl of long setae and 1 distal whorl of long hair-shaped sensilla. Maxillary palpus 4-segmented, all segments with hair-shaped translucent sensilla.

Wing: AntC ending at juncture with R5 or extending slightly beyond R5. ApicR1 = 3 times the length of Rs. Legs: Pretarsal claws without teeth.

Terminalia: Sclerotization of tg9 mesally interrupted for a short distance. Ventral emargination of gonocoxites broadly U-shaped, extending to midlength ( Fig. 1B ). Gonostylus flattened, excavated dorsomesally, rounded apically ( Fig. 1B ). In between gonocoxites and tegmen a weak membranous pubescent lobe. Tegmen as long as gonocoxites, tapering towards apex, apically rounded, with dark lateral stripes approaching each other near apex; apical margin of ventral plate situated just below tegmen apex ( Fig. 1C ). Both cerci and st10 distinct, pubescent; cerci bearing a few fine setae.

Female and immature stages. Unknown.

Etymology:

The species is named to honour Dr Simon J. GROVE, Conservation Biologist with Forestry Tasmania, Hobart , whose broad, keen interest in the Natural History of Tasmania helped with the initiation of this study .

Types:

Holotype: Male, Australia, Tasmania, Warra LTER site, Manuka Road , 14 April 2000, Malaise sample FT28645, R. BASHFORD (in AMS) . Paratypes: 1 male, same locality but 1 March 2005, sample FT35695 ; 2 males, same locality but 1 April 2005, sample FT35962 ; 3 males, same data but sample FT35967 (in AMS and SDEI) .

Other material:

1 male, Warra LTER site, Mt Weld , 30 March 2001, sample FT109, N. DORAN & R. BASHFORD ; 1 male, same locality but 22 Jan. 2002, sample FT5898 ; 1 male, Tasmania, Sheffield, Dasher River , near Road C 159, 24 Feb.-4 March 2006, N. JÖNSSON, T. MALM & D. WILLIAMS ; 1 male, Tasmania, Central Plateau, near Arthur´s Lake, gravel road from Road B 51 to Little Lake , 25 Feb.-4 March 2006, N. JÖNSSON, T. MALM & D. WILLIAMS .

Figures

Fig. 1: Peromyia grovei 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.