Tomosvaryella macrostyla Földvari, Skevington & Motamedinia, 2023

Tomosvaryella macrostyla Földvari, Skevington & Motamedinia sp. nov.

urn:lsid:zoobank.org:act:965172F0-3E63-4DC0-9849-3016BF872686

Figs 60A–I View FIGURE 60 , 131 View FIGURE 131 , 157E View FIGURE 157

Diagnosis: This species can be recognized by a distinct keel on the hind trochanter that bears 9–11 bristles; elongated surstyli in lateral view ( Fig. 60A, E View FIGURE 60 ); both surstyli bent towards sternite at the apex in lateral view ( Fig. 60C–D, 60H–I View FIGURE 60 ); phallic guide with two small spines towards epandrium in lateral view ( Fig. 60C–D View FIGURE 60 ).

Description: MALE: Body length: 2.2–2.5 mm. Head. Flagellum brown and acuminate; face silvery pollinose. Frons, upper part shining black, lower part distinctly silver pollinose; eyes touching for distance equal to 1.3–2 times the length of ocellar triangle; occiput silvery pollinose, slightly less so on upper half. Thorax. Postpronotum pale, with 4–5 whitish bristles. Mesonotum (viewed obliquely from front) subshining black, anterior part indistinctly silver pollinose, slightly grayish also from the side. Scutellum silvery pollinose and without bristles. Dorsocentral bristles weakly developed, dark, longer on frontal part. Halter, knob pale, stem dark brown. Legs. Mid coxa with 2–3 spines. Trochanters and base of femora brown; femora dark brown, shining ventrally, silvery pollinose posteriorly except shiny hind femur; knees, basal 1/5 of tibiae yellow, tarsal segments yellow-brown, last segment dorsally darker. Ventroapical row of spines on fore femur missing, 4–6 short, black spines on mid femur; no spines on hind femur, only 12–14 short bristles posteriorly equally distributed, longer on distal half. Subapical (distal) spines on first four tibiae present (short). Hind trochanter with a keel bearing 9–11 distinct bristles. Distitarsi slightly flattened, first tarsomere slightly longer than 2–4 combined; ventral bristles yellow and scrub-like. Pulvilli as long as last tarsal segment. Wing. Length: 2.4–2.5 mm, LW:MWW = 2.0. Upper side of basal costal cell with one long distinct bristle. Fourth costal section 2.5–3 times as long as third costal section. Cross-vein r-m at middle or slightly proximal to middle of discal cell. Setulae on tegula absent. Abdomen. Viewed obliquely from front tergites brownish pollinose, tergite 1 silver-grey with 2–3 short brown lateral bristles (up to 0.1 mm), sides silvery pollinose on tergites 4 and 5 (the latter with larger spot). Dispersed short dark bristles on tergites present, the longest on tergite 5 and as long as width of hind tibia at base. Postabdomen in dorsal view: T6, S7 invisible; T5 as long as ST8. Genitalia without dissection: ST8 large, brown; membranous area long and broad, widest on dorsal part, vertical; surstyli relatively long, broad and flat. Genital capsule in dorsal view: epandrium dark brown; surstyli light brown. Epandrium longer than wide (MLE:MWE = 1.13). Both surstyli elongated, left longer than right one, left smoothly curved over right one or straight ( Fig. 60A, E View FIGURE 60 ). Genital capsule in ventral view: Subepandrial sclerite short to long; gonopods short or elongated towards surtsyli; phallus trifid, ejaculatory ducts short ( Fig. 60B, F View FIGURE 60 ). Genital capsule in lateral view: both surstyli elongated, bent towards sternite at the tips ( Figs 60C–D, 60H–I View FIGURE 60 ). Phallic guide shortened with two small spines dorsally. Ejaculatory apodeme tube-like, bent, with a bulb in its middle ( Fig. 60G View FIGURE 60 )

FEMALE: Body length (excluding antennae and head): 1.7 mm. Thorax. Postpronotal lobe light yellow, gray pollinose, with 1–2 light brown bristle along the upper margin (up to 0.01 mm). Prescutum and scutum, scutellum black, light brown pollinose in dorsocentral area and gray pollinose in prescutum. Pleura black, prosternum and metasternum brown. Wing. Length: 2.5 mm. LW:MWW = 3.3. Legs. Mid coxae with two long and one short dark anterior bristle. Hind trochanter with a row of short dark bristles ventrally. All femora bearing one wrinkled indentation in basal. Abdomen. Tergites 1–6 gray pollinose with scattered short dark bristles. Tergite 1 with 2 long and 2–3 short black lateral bristles. Ovipositor. Base of ovipositor dark, gray pollinose, piercer light brown. Viewed laterally ( Fig. 157E View FIGURE 157 ), base of piercer curved, piercer long and straight. LP:LB = 4.7. LDP:LPP = 3.0.

Etymology: The specific name is derived from the Greek word makros for long, which combined with stylus refers to the long surstyli of males of this species.

Examined material: HOLOTYPE: AUSTRALIA: Western Australia: Karijini National Park: Juna Downs Road (between drying pools in rocky Turee Creek), 22°42’S, 118°25’E, 789m, 25.iv–14.v.2003, C. Lambkin, T. Weir, Malaise trap, CNCD3861 (1♂, WAM); PARATYPES: AUSTRALIA: Western Australia: Karijini National Park: Juna Downs Road (between drying pools in rocky Turee Creek), 22°42’S, 118°25’E, 789m, 25.iv–14.v.2003, C. Lambkin & T. Weir, Malaise trap, CNCD3813, CNCD3827–8, CNCD3831, CNCD3834, CNCD3836, CNCD3838, CNCD3841–2, CNCD3844, CNCD3846, CNCD3848–9, CNCD3852, CNCD3854–5, CNCD3857– 60, CNCD3864–5 (4♂, 1♀, CNC; 14♂, 3♀, QM); Karijini National Park, Juna Downs Road, 22°42’S, 118°25’E, 789m, between drying pools in rocky Turee Creek, 19–25.iv.2003, C. Lambkin & T. Weir, Malaise trap, JSS16257 (1♀, QM); 22°44’S, 118°25’E, 798m, dry Turee Creek, grassy open Eucalyptus scrub, 25.iv–14.v.2003, C. Lambkin & T. Weir, Malaise trap, JSS16094 (1♀, QM); Karijini National Park, Weano Gorge Road, 22°22’S, 118°15’E, ~ 775m, on hilltop, open Eucalyptus , 25.iv–14.v.2003, C. Lambkin & T. Weir, Malaise trap, JSS16137; JSS16140 (2♂, ANIC); Millstream-Chichester National Park, Black Hill Pool, 21°20’S, 117°15’E, 176m, over wide dry rocky creek bed, Eucalyptus , 7–12.v.2003, C. Lambkin & D. Yeates, Malaise trap, JSS16314 (1♂, ANIC); Millstream-Chichester Nat[ional] Park, Pipeline Road, 21°36’S, 117°5’E, 324m, in Acacia Spinifex scrub, 2–11.V.2003, C. Lambkin & D. Yeates, J. Recsei, Malaise trap, JSS16153 (1♂, ANIC); Queensland: Mornington Island, 16°33’S, 139°24’E, 18.IV.1983, J.F. Donaldson, D-Vac, JSS8962–64; JSS8966 (4♂, QDPC); Culgoa Floodplain National Park, 7km Northwest of Toulby Gate (TOLB7M), 28°57’S, 146°53’E, 138m, reedy swamp, 20.I–19.III.2010, C. Kelly & A. Coward, Malaise trap, CNC575366 (1♂, QM); Culgoa Floodplain National Park, 7km NNW Toulby Gate (CG4AM), 28°56’S, 146°55’E, 160m, Gidgee, 20.i–19.iii.2010, C. Kelly, A. Coward, Malaise trap, CNC576379, CNC576382–3, CNC576386–90 (6♂, QM; 2♂, USNM); Culgoa Floodplain National Park, 7km Northwest of Toulby Gate (TOLB7M), 28°57’S, 146°53’E, 138m, reedy swamp, 20.i–19.iii.2010, C. Kelly, A. Coward, Malaise trap, CNC575373–6 (2♂, CNC; 2♂, QM); New South Wales: Culgoa National Park, 8km West-Northwest of Cawwell Homestead, Diemunga Lagoon (CGN2M), 29°3’S, 146°1’E, 136m, Coolibah, 21.XII.2009 – 30.I.2010, B. Schiebaan, Malaise trap, CNC574749 (1 ♂, QM); Tasmania: 10 km NW by N St. Helens, 41°15’S, 148°10’E, 14.I.1983, I.D. Naumann, J.C.Cardale, yellow pan trap, JSS9264 (1♂, ANIC).

Distribution: Australia (New South Wales, Queensland, Tasmania, Western Australia) ( Fig. 131 View FIGURE 131 ).

Notes: Based on genitalia, there are two putative species in what we are treating as one species here. The COI sequences are overlapping and both species occur at the same locations on the same dates, so we have opted to be conservative and treat them as a single species. More research should be conducted on this potential species complex. Host data and other genetic markers would be useful to help determine if it is one or two species. One putative species has the dorsomedial margin of the surstyli curved in lateral view ( Fig. 60H–I View FIGURE 60 ) and includes CNC576390, CNCD3827, CNCD3834, CNCD3836, CNCD3841, CNCD3848, CNCD3852, CNCD3854–5, CNCD3857, CNCD3859–60, CNCD3865, JSS16094, JSS16137 and JSS16140. The second putative species has the dorsomedial margin of surstyli straight in lateral view and more elongated gonopods in ventral view ( Fig. 60A–D View FIGURE 60 ) which includes CNCD3813, CNCD3838, CNCD3842, CNCD3844, CNCD3846, CNCD3849, CNCD3861, JSS16314, CNC576379, CNC576382, CNC576383, CNC57638–9, CNC575373–6, JSS9262–4, JSS8966 and JSS9264. Genetic distance between sequenced specimens is low (0.0 to 0.7% pairwise divergence). Intraspecific genetic distance ranges from 0.0–1.6%. This species is genetically most similar to T. bulbosa sp. nov. and T. warrumbunglensis sp. nov. (3.2% pairwise divergence) (Supplementary file 3).