Tianarinha goodmani Irwin & Winterton 2024, gen. et sp. nov.
Creators: name: Irwin, Michael E.
name: Winterton, Shaun L.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Therevidae
Tianarinha
Tianarinha goodmani

description: Tianarinha goodmani gen. et sp. nov.
urn:lsid:zoobank.org:act: BCDC4CC4-BF3E-40DE-AB63-37548A5B0C0D
Figs 10–11, 14A–B, 15F, 16G–H, 19
Diagnosis
Frons with a few small dark setae above antenna; male frons approximately equal to width of ocellar tubercle, diffuse black chevron across middle of frons (Fig. 14A–B); setae present on posterior surface of hind coxa (Fig. 11B).
Differential diagnosis
See Diagnosis.
Etymology
We are pleased to name this species after Steven M. Goodman, who did much to target areas where Malaise traps could be placed to expand the habitats where specimens could be sampled.
Material examined
Holotype MADAGASCAR – Tulear Province (Androy Region) • ♂; Cape St Marie Special Reserve, 74 km S of Tsihomb; 25.5876° S, 45.1631° E; 5 m a.s.l.; 31 Aug.–10 Sep. 2003; M.E. Irwin and R. Harin’Hala leg.; Malaise in coastal dunes; CASC.
Paratypes MADAGASCAR – Tulear Province (Androy Region) • 41 ♂♂, 11 ♀♀; same collection data as for holotype: various dates between 23 Dec. 2002 and 23 Nov. 2003; CSCA • 19 ♂♂, 3 ♀♀; same collection data as for holotype; 13–31 Jul. 2003, 10–20 Aug. 2003; Malaise trap on bluff above wash among stunted trees on sand; CASC.
Other material
MADAGASCAR – Tulear Province (Atsimo-Andrefana Region) • 1 ♂♂; Zombitse-Vohibasia National Park; 22.8865° S, 44.6923° E; 840 m a.s.l.; 27 May–4 Jun. 2002; M.E. Irwin and R. Harin’Hala leg.; Malaise in dry deciduous forest [it is possible this is a mislabelled specimen because after several years of Malaise trapping no other specimens were collected]; CSCA • 11 ♂♂; 5 km N of Ampotaka; 25.0303° S, 44.6915° E; 86 m a.s.l.; 24 May–2 Aug. 2009; M.E. Irwin and R. Harin’Hala leg.; Malaise on trail in Vitambany gallery forest; CSCA. – Tulear Province (Anosy Region) • 3 ♂♂; Berenty Special Reserve, 8 km NW of Amboasary, 58 km SW Fort Dauphine; 25.0066° S, 46.3201° S; 85 m a.s.l.; 20 Oct.–2 Nov. 2002; M.E. Irwin and R. Harin’Hala leg.; Malaise in forest; [MEI169448, 169453, 169465]; CSCA • 26 ♂♂; same collection data as for preceding; various dates: 2–9 Nov. 2002, 7–27 Dec. 2002, 26 Jan.–5 Feb. 2003, 25 Feb.–7 Mar. 2003, 14–21 Dec. 2003; CSCA.
Description
BODY LENGTH. 5.5–6.0 mm (male), 5.5–6.5 mm (female).
HEAD. Frontal profile slightly raised above antennal bases with medial furrow ventrally, pubescence silver with dark yellow-brown suffusion, frons with brown band from antennal base to eye margin, black-brown along eye margin in middle of frons, male frons with diffuse black chevron midway, width at narrowest point approximately equal to width of anterior ocellus, frontal vestiture as patch of short, black setae above antenna (fewer in female), setae more numerous dorsally; ocellar tubercle flat (female) or raised, black pubescent (male), with short macrosetae; black postocular macrosetae elongate, strongly curved anteriorly and in a single row with additional setae irregularly arranged dorsomedially on occiput in both sexes; occiput pubescence silver-gray, brown suffusion medially; genal setae dark; antennal scape cylindrical, shorter than flagellum, brown overlain with gray pubescence admixed with dark macrosetae; flagellum conical, tapered distally, style elongate, brown with gray pubescence.
THORAX. Scutum gray with brown tessellate pattern, narrow stripe medially with interrupted stripes laterally, sparse short pale setae; scutellum concolorous with scutum; pleuron tan, overlain with sparse grayish pubescence; katatergite with admixed pale and dark setae; scutal and scutellar macrosetae black, relatively elongate; coxae brown pubescent, abundant minor setae black admixed with some yellow; macrosetae numerous, black; hind coxa with pale setae on posterior surface; femora dark brown (male) to dark yellow, suffused with dark brown, lighter apically (female), short dark setae admixed with longer pale setae, sparse covering of white scale-like adpressed setae; hind femur with single subapical anteroventral macroseta; tibiae dark yellow, suffused with brown; tarsi with basitarsi yellow, dark distally, remaining tarsal segments brown; wing irregularly smoky infuscate, darker anteriorly (especially in male); venation dark; haltere dark yellow, knob white; scutal chaetotaxy (pairs): notopleural, 3; supra alar, 2; post alar, 1; dorsocentral, 1; scutellar, 1.
ABDOMEN. Male abdomen dark brown dorsally, gray pubescent laterally, long pale setae, darker on posterior segments and terminalia; female abdomen brown, tergites yellow posteriorly and laterally, broader on posterior tergites; terminalia dark yellow.
Remarks
Tianarinha goodmani gen. et sp. nov. is known from several localities in sandy and spiny thicket habitats in southern Madagascar, sometimes trapped in large numbers.
description: Published as part of Irwin, Michael E. & Winterton, Shaun L., 2024, New genera of stiletto flies endemic to Madagascar (Therevidae: Therevinae), pp. 1-33 in European Journal of Taxonomy 932 (1) on pages 19-21, DOI: 10.5852/ejt.2024.932.2507, http://zenodo.org/record/11001504