Warramyia JASCHHOF, 2010

Jaschhof, Mathias & Jaschhof, Catrin, 2010, New taxa of Campylomyzini and Pteridomyiini from Tasmania (Diptera: Cecidomyiidae: Micromyinae), Beiträge Zur Entomologie = Contributions to Entomology 60 (1), pp. 195-212 : 196-197

Genus Warramyia JASCHHOF gen. n.

Type species: Warramyia weldensis JASCHHOF sp. n., described below.

Diagnosis:

Based on male adult, females and immatures remain unknown. The new genus differs from all other Micromyidi (i.e., Micromyinae with furcate CuA and usually 12 male antennal flagellomeres) in the presence of 1 sensory bud on basR1 ( Fig. 1A ) and a mesothoracal, acute-angled apodeme that is lacking or incomplete elsewhere ( Fig. 1B , see Discussion). Among Campylomyzini , Warramyia is unusual for the complete lateral eye bridge, the very short apicR1, and the poorly developed M ( Fig. 1A ). Warramyia has collar-shaped antennal sensilla ( Fig. 2B ), which are also present in some other campylomyzine genera, and male terminalia which are similar to that in Neurolyga RONDANI, 1840 , with simple, hair-shaped antennal sensilla. The single species known of Warramyia , weldensis , is the smallest campylomyzine hitherto found.

Description:

Male. Body size: <1.0 mm. Head: Postfrons asetose. 3 ocelli. Occiput with sparse setae. 1 sparse row of postocular bristles. Eye bridge complete. Antennal scape and pedicel subequal in size, both setose. 8 flagellomeres retained, nodes with crenulate whorls of sensory hairs, on apical half hairshaped translucent sensilla laterally and 1 incomplete collar-shaped sensillum medially ( Fig. 2B ). Clypeus large. Maxillary palpus short, 4-segmented, with setae of various lengths including some short, stiff setae, first segment with hair-shaped translucent sensilla ( Fig. 2C ).

Thorax:

Fig. 1B . Scutum and scutellum setose, otherwise asetose. Anterior basalare not shifted ventrally. Mesepimeron larger than laterotergite. Endomesothorax with closed, acute-angled apodeme situated above anterior portion of postphragma (see Discussion). Wing: Fig. 1A . Membrane with microtrichia and setae on both sides. Vein setae strongly reduced. Venation as typical of Micromyidi ( JASCHHOF & JASCHHOF 2009 : fig. 15F), veins not as sharply demarcated from membrane as is usual in Micromyidi. Halter club-shaped, with very short stem, node with sparse, short setae. Legs: With long setae, true scales apparently lacking. Tarsi short compared with other Micromyidi. Pretarsal claws crescent-shaped, without teeth. Empodia as long as claws.

Preabdomen: Sclerotization generally very poor. Tergal setae much reduced. Tergal plaques absent. Pleura asetose. Terminalia: Fig. 2A . Tg9 very weak (not figured). Gonocoxites broadly fused ventrobasally, ventroapical margin emarginate, ventrobasal margin weak, dorsal transverse bridge extending far beyond ventral margin, antGA undeveloped. Gonostylus simple, without apical spine. Ejaculatory apodeme large, ducts of accessory glands indistinct. Tegmen largely membranous. Apices of ejaculatory apodeme and tegmen merged to form extensive membranous cupola. Cerci present as pair of ovate lobes attached to tg9. St10 absent.

Figures

Fig. 1: Warramyia weldensis gen. et sp. n., male. - A: Wing, dorsal view; - B: Thorax, lateral view. Ant bas, anterior basalare; apod, apodeme; lat, laterotergite; mesep, mesepisternum. Scale bar = 0.2 mm (A) and 0.1 mm (B).

Fig. 2: Warramyia weldensis gen. et sp. n., male. - A: Terminalia, ventral view; - B: Fourth antennal flagellomere, medial view; - C: Maxillary palpus, lateral view. Scale bar = 0.05 mm.