Tomosvaryella bulbosa 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 : 52

Tomosvaryella bulbosa Földvari, Skevington & Motamedinia sp. nov.

urn:lsid:zoobank.org:act:59F8B08E-8749-4EE7-A3A5-81D963B38DDC

Figs 20A–D , 114 , 148F

Diagnosis: This species can be recognized by the bulging and arched hind trochanter with short spines along a keel ventrally ( Fig. 148F ); elongated surstyli in dorsal view ( Fig. 20A ); elongated gonopods towards surstyli in ventral view ( Fig. 20B ); long subepandrial sclerite; long and distinct hypandrial apodeme in ventral view ( Fig. 20B ); phallic guide with 5–6 dorso-dorsolateral spines ( Fig. 20B–D ).

Description: MALE: Body length: 2.6–2.7 mm. Head. Flagellum acuminate; yellow-brown. Face silvery pollinose. Frons, upper part shining black; lower part distinctly silver pollinose; eyes touching for distance equal to 1.5 times the length of ocellar triangle. Occiput silvery pollinose, less so on upper 1/3. Thorax. Postpronotum pale, with 2–3 pale bristles. Mesonotum (viewed obliquely from front) brownish pollinose, anterior part more grey, grayish also from the side. Scutellum silvery pollinose and with 6–8 bristles along the distal edge. Dorsocentral bristles distinct, pale, somewhat longer along frontal edge, numerous dark bristles around postpronotum present. Halter, knob pale, stem brown. Legs. Mid coxa with four same size dark bristles. Trochanters and femora dark brown, shining ventrally, silvery pollinose posteriorly except shiny hind femur; knees and basal 1/5 of tibiae yellow (tibiae otherwise dark brown), tarsal segments yellow-brown, ventrally paler, last segment darker. Hind trochanter bulging arched ventrally with short spines along a keel ventrally (20–22) ( Fig. 148F ); ventrobasal spines absent on fore and mid femora. Ventroapical row of spines on fore femur absent; 3–4 small, black spines on mid femur; hind femur without ventroapical spines, except 18–20 equally spaced bristles posteroventrally, longer and stronger on distal half, longest up to 1.5 times the width of hind tibia at distal end. Subapical (distal) spines on first four tibiae present (short). Hind tibia bent in posterior view. Hind metatarsus not flattened and slightly longer than 2–4 combined. Pulvilli shorter than last tarsal segment. Wing. Length: 3.0 mm. Upper side of basal costal cell with one short dark bristle. Fourth costal section 2–2.5 times as long as third costal section. Cross-vein r-m at 3/5 of discal cell (distal to middle). 2–3 distinct brown setulae on tegula. Abdomen. Viewed obliquely from front tergites slivery pollinose, tergite 1 silvery grey, silvery pollinose spots on tergites 4 and 5 (similar size). Dispersed strong dark bristles on all tergites present, longest on tergite 5 up to ½ the width of hind tibia at distal end. Lateral bristles on first tergite present, 3–4 dark bristles up to half as long as hind femur’s width at base. Postabdomen in dorsal view: T6, S7 invisible; T5 1.3–1.6 times as long as ST8. Genitalia without dissection: ST8 medium sized, broad, round in dorsal view, brown and with distinct bristles, otherwise velvet-like coverage; membranous area rounded elongate, mostly directed posterodorsally; epandrium and surstyli not visible (view blocked). Genitalia. Genital capsule in dorsal view: epandrium longer than wide (MLE:MWE = 1.7). Surstyli elongated, right surstylus smaller than left one, pointed at inner margin before apex; left surstylus curved towards right one ( Fig. 20A ). Genital capsule in ventral view: gonopods elongated towards surstyli, tapering at apex with a small edge at inner margin before apex, equal in height; subepandrial sclerite long; hypandrial apodeme distinct, more extended beneath hypandrium ( Fig. 20B ). Genital capsule in lateral view: both surstyli narrow, curved towards sternite; phallic guide with 5–6 dorso-dorsolateral spines (one is longer) ( Fig. 20C–D ).

FEMALE: Unknown.

Etymology: The name is based on the Latin bulbus for swelling, in reference to the bulging hind trochanter.

Examined material: HOLOTYPE: AUSTRALIA: Queensland: 3 km west Windorah , [-25.406587, 142.635480], 31.VIII–5.IX.1997, S. Winterton, J.&A. Skevington & C. Lambkin, Malaise trap, JSS8852 (1♂, QM) ; PARATYPES: AUSTRALIA: South Australia: Flinder’s Ranges National Park, Love Range, Mine Road , 31°24’S, 138°47’E, in dry creek bed, 8–9.X.1997, S. Winterton, J.&A. Skevington & C. Lambkin, Malaise trap, JSS8403 (1♂, QM); Flinders Ranges National Park , 31°24’S, 138°47’E, 10–11.X.1997, J.&A. Skevington, S. Winterton & C. Lambkin, Malaise trap, JSS8409 (1♂, QM) ; Queensland: 20 km E Mareeba, -17.092489, 145.320180, 15.IV.1980, G.F. Hevel & J.A. Fortin, JSS10529 (1♂, USNM); Carnarvon Station, Mailman Spring , 24°51’S, 147°42’E, 760m, Eucalyptus woodland , 16.X.2014, Wright, Lambkin, Starick, hand net, CNC597045 (1♂, CNC) .

Distribution: Australia (Queensland, South Australia) ( Fig. 114 ).

Notes: This is another species that occurs in the arid, inland areas ranging from desert to Eucalyptus woodland . Intraspecific genetic distance ranges from 0.0% to 2.0%. This species is genetically similar to T. wintertoni sp. nov. (2.3% pairwise divergence) (Supplementary file 3).

Figures

FIGURE 20. Male genitalia of Tomosvaryella bulbosa sp. nov. (JSS8852, QM) A) dorsal view, B) ventral view, C, D) lateral view.

FIGURE 114. Distribution of Tomosvaryella brocha sp. nov., T. bulbosa sp. nov., T. parvistyla sp. nov. in Australia.

FIGURE 148. Hind legs of Tomosvaryella species in lateral view A) T. bicalcarata sp. nov., paratype (JSS8391, QM), B) T. angelikae sp. nov., paratype (JSS8383, QM), C) T. moffattensis sp. nov., holotype (JSS2938, QM), D) T. collessi sp. nov., paratype (JSS8562, ANIC), E) T. powerae sp. nov., holotype (JSS8428, QM), F) T. bulbosa sp. nov., holotype in ventral view (JSS8852, QM).