Ansifera gombakensis, Jaschhof, 2009

Jaschhof, Mathias, 2009, Ansifera, a new genus of Campylomyzini with remarkable antennal sensilla (Diptera: Cecidomyiidae: Lestremiinae), Beiträge Zur Entomologie = Contributions to Entomology 59 (2), pp. 513-526 : 520-522

Ansifera gombakensis sp. n.

( Fig. 3 A-D)

Diagnosis:

Males are characterized by the combination of the following character states: the antennal translucent sensilla are simply hair-shaped ( Fig. 3D ), the flagellomere necks are very short ( Fig. 3D ), the basal palpus segment is clearly swollen ( Fig. 3C ), the gonostyli are comparatively short ( Fig. 3A ), and the large ejaculatory apodeme has a sclerotized, funnel-shaped apical extension ( Fig. 3A ).

Description:

Male. Body length: 1.0- 1.1 mm. Head: Postfrons asetose. Eye bridge 3-5 ommatidia long, shorter laterally than dorsally. Postocular bristles 5 or fewer. Neck of fourth antennal flagellomere shorter than node; node with 1 complete and 2 incomplete crenulate whorls, translucent sensilla hairshaped ( Fig. 3D ). Maxillary palpus short, basal segment swollen, apical segment usually longer than preceding segment, usually setose, exceptionally asetose ( Fig. 3C ).

Wing: Costal break indistinct. ApicR1 1.5-2 times the length of Rs. Dorsal setae only on R1 and basal half of R5.

Preabdomen: Terga 2-8 with lateral setae. Terminalia: Fig. 3 A-B. Tg9 interrupted and asetose mesally. Ventral emargination of gonocoxites broadly U-shaped, dorsal transverse bridge projecting beyond ventrobasal margin, the latter reinforced. Gonostylus slightly flattened and tapered toward apex. Ejaculatory apodeme much longer than tegmen, apical extension large, funnelshaped. Tegmen slightly tapered toward apex, the latter membranous, blunt. Cerci occasionally projecting beyond tg9.

Female and immature stages. Unknown.

Distribution and phenology:

All specimens known of R. gombakensis are from the type locality, a lowland rainforest in the Selangor Province, West Malaysia. Specimens captured by aspirator were observed swarming over moist, rotten wood, others were taken by sweepnet and Malaise trap elsewhere in the forest .

Etymology: The species name is derived from the type locality, Ulu Gombak. Types: Holotype: Male, West Malaysia, Selangor, Ulu Gombak, near University of Malaya Field Studies Centre, in primary evergreen rainforest, 250 m, 1 March 1997, by sweepnet, M. JASCHHOF (in NHRS). Paratypes: 3 males, same data as the holotype; 4 males, same data but collected by aspirator (in NHRS).

Other material: 22 males, type locality, various dates between 22 Feb. and 21 March 1997, by Malaise trap, sweepnet & aspirator, M. JASCHHOF, H. HIPPA & B. VIKLUND .

Figures

Fig. 3: Ansifera gombakensis sp. n., male. - A: terminalia, ventral view; - B: ditto, ejaculatory apodeme and aedeagus expanded; - C: maxillary palpus, lateral view; - D: fourth antennal flagellomere, lateral view. Length of scale bar = 0.05 mm.