Tomosvaryella parvistyla Motamedinia, Skevington & Földvari, 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 : 163-164

Tomosvaryella parvistyla Motamedinia, Skevington & Földvari sp. nov.

urn:lsid:zoobank.org:act:7A690E39-223B-48B1-9CDE-70E397F5B2A9

Figs 73A–E , 114 , 150C

Diagnosis: This species can be recognized by the hind femur with a small triangular keel on the posterior side close to the base ( Fig. 150C ); tiny surstyli, widened at base, curved in basal two thirds and straight in apical third in dorsal view ( Fig. 73A ); gonopods extended towards surstyli, widened at the apex in ventral view ( Fig. 73B ); phallic guide with 3–4 short dorsolateral spines in ventral view ( Fig. 73B ).

Description: MALE: Body length: 2.4 mm. Head. Face silvery pollinose. Frons, upper part shining black; lower part distinctly silver pollinose; eyes touching for distance equal to 2.2 times the length of ocellar triangle. Occiput silvery pollinose. Thorax. Postpronotum pale, with 2–3 short pale bristles. Mesonotum (viewed obliquely from front) silvery pollinose, anterior part greyer. Scutellum silvery pollinose and with 6–8 short pale bristles along distal edge. Halter, knob and stem pale, base brownish. Legs. (Fore and mid legs missing beyond coxa). Mid coxa with 3–4 long brown bristles. Trochanters brown, hind femur black, silvery pollinose posteriorly except shiny hind femur; knees and basal 1/6 of hind tibia yellow (tibiae otherwise brown), tarsal segments bright yellow. Hind trochanter gray pollinose with scattered short pale bristles. Hind femur with ventroapical spines. Hind femur with small triangular keel (shark fin) on the posterior side close to base ( Fig. 150C ). Hind tarsomeres not flattened, hind metatarsus almost as long as 2–4 combined, dorsally all tarsomeres with erect bristles. Pulvilli shorter than last tarsal segment. Wing. Length: 2.5 mm. Upper side of basal costal cell with one long dark brown bristle. Fourth costal section 3 times as long as third costal section. Cross-vein r-m at middle of discal cell. 2–3 short brown setulae on tegula. Abdomen. Viewed obliquely from front tergites brown-black, except tergite 1 silvery grey. Lateral bristles on first tergite present, 6–8 dark bristles up to as long as ¾ of hind femur’s width at base. Genitalia. Genital capsule in dorsal view: epandrium longer than wide (MLE:MWE = 1.1). Surstyli small, widened at the base, then straight and bent to each other at the apex ( Fig. 73A ). Genital capsule in ventral view: both gonopods extended towards surstyli, widened at apex, with a distinct projection on inner margin, pulled towards each other; phallic guide with 3–4 short dorsolateral spines, one longer than the other; subepandrial sclerite distinct with two edges in lateral sides ( Fig. 73B ); Genital capsule in lateral view: both surstyli widened at the base, curved in basal two thirds, narrow and straight in apical third ( Fig. 73D–E ). Ejaculatory apodeme tube-like, bent, with a bulb in its middle ( Fig. 73C ).

FEMALE: Unknown.

Etymology: From the Latin parvus, little, in reference to the tiny surstyli.

Examined material: HOLOTYPE: AUSTRALIA: New South Wales: Culgoa National Park, 8km West-Northwest Cawwell Homestead, Diemunga Lagoon ( CGN2 M), 29°3’S, 146°60’E, Coolibah , 30.I–18.V.2010, C. Lambkin, R. Olsen & B. Shieban, Malaise trap, CNC575122 (1♂, QM).

Distribution: Australia (New South Wales) ( Fig. 114 ).

Figures

FIGURE 73. Male genitalia of Tomosvaryella parvistyla sp. nov. (CNC575122, QM) A) dorsal view, B) ventral view, C) ejaculatory apodeme, D, E) lateral view.

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

FIGURE 150. Hind legs of Tomosvaryella species in lateral view A) T. spinifex sp. nov., holotype (JSS16200, WAM), B) T. petala sp. nov., paratype (JSS16316, ANIC), C) T. parvistyla sp. nov., holotype (CNC575122, QM), D) T. minychoma sp. nov., holotype (JSS7363, WAM), E) Mid leg of T. calcarilonga sp. nov., paratype (JSS7634, QM), F) mid leg of T. leimonias, holotype (JSS4150, ZMAN).