Tomosvaryella setapteron Földvari, Skevington & Motamedinia, 2023

Motamedinia, Behnam, Földvari, Mihaly, Skevington, Jeffrey H. & Kelso, Scott, 2023, Revision of Australian Tomosvaryella Aczél (Diptera: Pipunculidae) with description of 100 new species, Zootaxa 5599 (1), pp. 1-271 : 192-194

Tomosvaryella setapteron Földvari, Skevington & Motamedinia sp. nov.

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Figs 87A–E , 138

Diagnosis: This species can be recognized by symmetrical and elongated surstyli in dorsal view ( Fig. 87A ); gonopods extended towards surstyli, pointed at apex, right gonopod with a distinct projection on inner margin;

phallic guide with 3–6 dorso- dorsolateral spines; large subepandrial sclerite with a small wrinkled edge in its center in ventral view ( Fig. 87B ).

Description: MALE: Body length: 2.0 mm (without abdomen). Head. Flagellum acuminate; yellow-brown. Face silvery pollinose.Frons, upper part shining black; lower part distinctly silver pollinose; eyes touching for distance equal to 2 times the length of ocellar triangle. Occiput silvery pollinose, less so on upper 1/3. Thorax. Postpronotum pale, without bristles. Mesonotum (viewed obliquely from front) silvery pollinose, anterior part more grey, grayish also from the side. Scutellum silvery brown pollinose and with 4–6 bristles along distal edge. Dorsocentral bristles short, dark, longer in frontal half, numerous pale bristles around postpronotum present. Halter, knob pale, stem brown. Legs. Mid coxa with 5–6 long dark bristles. Trochanters brown, femora black, shining ventrally, silvery pollinose posteriorly except shiny hind femur; knees and basal 1/5 of tibiae yellow (tibiae otherwise brown), tarsal segments yellow-brown dorsally, yellow ventrally. Hind trochanter covered with scattered short bristles. Hind femur without ventroapical spines, except 8–10 equally spaced bristles posteroventrally, longer on distal half, longest up to 2/3 the width of hind tibia at distal end. Subapical (distal) spines on first four tibiae absent. Hind trochanter without keel, and 4–5 short spines, mostly proximally; ventrobasal spines absent on fore and mid femur. Hind tarsomeres slightly flattened, hind metatarsus as long as 2–4 combined, all tarsomeres with erect dark bristles dorsally. Pulvilli shorter than last tarsal segment. Wing. Length: 2.7 mm. Upper side of basal costal cell with two long dark brown bristles. Fourth costal section 2 times as long as third costal section. Cross-vein r-m at middle of discal cell. 2–3 short dark setulae on tegula. Abdomen. Dissected. Genitalia. Genital capsule in dorsal view: epandrium longer than wide (MLE:MWE = 1.6). Surstyli symmetrical and elongated, curved to each other at apex, left surstylus longer than right one ( Fig. 87A ). Genital capsule in ventral view: gonopods equal in height, extended towards surstyli, pointed at apex, right gonopod with a distinct projection on inner margin; phallic guide with 3–6 dorsolateral spines, one is longer than others; subepandrial sclerite large, with a small wrinkled edge in its center, hypandrial apodeme distinct ( Fig. 87B ); Genital capsule in lateral view: both surstyli moderately narrowed to apex and curved towards sternite ( Fig. 87D–E ). Ejaculatory apodeme tube-like, bent, with a bulb in its middle ( Fig. 87C ).

FEMALE: Unknown.

Etymology: From the Latin seta, bristle and the Greek pteron, wing, in reference to the bristles on basal costal cell of the wing.

Examined material: HOLOTYPE: AUSTRALIA: Western Australia: Millstream-Chichester Nat[ional] P[ark], Roebourne Road, 21°26’S, 117°9’E, 337m, sandy creek, Eucalyptus Spinifex grassland, 7–12.V.2003, C. Lambkin & D. Yeates, Malaise trap, JSS15574 (1♂, ANIC).

Distribution: Australia (Western Australia) ( Fig. 138 ).

Note: This species is genetically closest to T. cona sp. nov. (3.6–9.5% pairwise divergence) (Supplementary file 3).

Figures

FIGURE 87. Male genitalia of Tomosvaryella setapteron sp. nov. (JSS15574, ANIC) A) dorsal view, B) ventral view, C) ejaculatory apodeme, D, E) lateral view.

FIGURE 138. Distribution of Tomosvaryella reburra sp. nov., T. setapteron sp. nov., T. warrumbunglensis sp. nov. in Australia.