Eudorylas bihamatus Motamedinia & Skevington, 2020

Motamedinia, Behnam, Skevington, Jeffrey Hunter & Kelso, Scott, 2020, Revision of Eudorylas Aczel, 1940 (Diptera, Pipunculidae) in the Middle East, with the description of four new species, Biodiversity Data Journal 8, pp. 53609-53609 : 53609

Eudorylas bihamatus Motamedinia & Skevington, 2020 sp. n.

Materials

Type status: Holotype. Occurrence: catalogNumber: JSS52191 ; recordedBy: M. Parchami-Araghi; individualCount: 1; sex: male; lifeStage: adult; associatedSequences: GB: MN549663; Taxon: scientificName: Eudorylasbihamatus; Location: country: Iran; stateProvince: Khuzestan; locality: Shush ; decimalLatitude: 32.1; decimalLongitude: 48.433333; Event: samplingProtocol: Malaise trap; eventDate: 2015-02-11 /05-10; Record Level: institutionCode: CNC Type status: Paratype. Occurrence: catalogNumber: JSS52313 ; recordedBy: M. Parchami-Araghi; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Eudorylasbihamatus; Location: country: Iran; stateProvince: Khuzestan; locality: Shush ; decimalLatitude: 32.1; decimalLongitude: 48.433333; Event: samplingProtocol: Malaise trap; eventDate: 2015-02-11 /05-10; Record Level: institutionCode: CNC Type status: Paratype. Occurrence: catalogNumber: JSS52314 ; recordedBy: M. Parchami-Araghi; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Eudorylasbihamatus; Location: country: Iran; stateProvince: Khuzestan; locality: Shush ; decimalLatitude: 32.1; decimalLongitude: 48.433333; Event: samplingProtocol: Malaise trap; eventDate: 2015-02-11 /05-11; Record Level: institutionCode: CNC Type status: Paratype. Occurrence: catalogNumber: JSS52315 ; recordedBy: M. Parchami-Araghi; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Eudorylasbihamatus; Location: country: Iran; stateProvince: Khuzestan; locality: Shush ; decimalLatitude: 32.1; decimalLongitude: 48.433333; Event: samplingProtocol: Malaise trap; eventDate: 2015-02-11 /05-10; Record Level: institutionCode: CNC Type status: Paratype. Occurrence: catalogNumber: JSS52316 ; recordedBy: M. Parchami-Araghi; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Eudorylasbihamatus; Location: country: Iran; stateProvince: Khuzestan; locality: Shush ; decimalLatitude: 32.1; decimalLongitude: 48.433333; Event: samplingProtocol: Malaise trap; eventDate: 2015-02-11 /05-10; Record Level: institutionCode: CNC Type status: Paratype. Occurrence: catalogNumber: JSS52317 ; recordedBy: M. Parchami-Araghi; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Eudorylasbihamatus; Location: country: Iran; stateProvince: Khuzestan; locality: Shush ; decimalLatitude: 32.1; decimalLongitude: 48.433333; Event: samplingProtocol: Malaise trap; eventDate: 2015-02-11 /05-10; Record Level: institutionCode: HMIM

Description

Male (Fig. 4 A, B). Body length (excluding antennae): 3.8-4.1 mm (n = 6). Head. Scape black, pedicel and arista dark brown, pedicel with a pair of short upper bristles, flagellum light brown, tapering and grey pruinose (LF:WF = 3.0); arista with thickened base. Eyes meeting for a distance of 12-13 facets. Frons dark silver-grey pruinose. Vertex black, bearing an elevated slightly ocellar triangle. Occiput dark and grey pruinose. Thorax. Postpronotal lobe brown, grey pruinose with 2-3 short bristles along upper margin. Prescutum and scutum black with scattered long setae at anterior supra-alar area. Scutellum black with eight thin short setae along posterior margin (up to 0.04 mm). Subscutellum black, grey pruinose. Pleura brown. Wing. Length: 3.5-3.6 mm. LW:MWW = 3.1. Wing almost entirely covered with microtrichia. Pterostigma brown and complete. LS:LTC = 1.0. LTC:LFC = 1.0. Cross-vein r-m reaches dm shortly after one-third of the cell’s length. Halter length: 0.5 mm, base dark brown stem and knob light brown. Legs. dark brown, grey pruinose. Mid coxa with three brown anterior bristles. Trochanters partly grey pruinose. Femora dark brown with pale apices, grey pruinose. Mid and hind femora bearing two rows of dark anteroventral small spines in apical half. Tibiae grey pruinose, with two rows of short setae on anterior side and three rows on posterior. Hind tibia with three wrinkled indentations in middle without erect anteromedial setae. Tarsi yellowish with light brown bristles at posterior margin and dark brown scattered setae at anterior margin. Pulvilli light brown, slightly large. Claws light brown with black tips. Abdomen. Ground colour dark brown, tergite 1 silver-grey pruinose, with three dark lateral bristles (up to 0.1 mm). Tergites 2-5 posterolaterally grey pruinose, slightly extending on to dorsal surface along posterior margin, extending on to dorsal surface, otherwise brown pruinose. Tergite 5 slightly wider than other tergites and almost asymmetrical in dorsal view (LT35:WT5 = 1.2, WT5:LT5 = 0.4, T5R:T5L = 1.2). Sternites brown, lighter than tergites, grey pruinose. Syntergosternite 8 enlarged, dark brown and grey pruinose. Viewed laterally, longer than high (LS8:HS8 = 1.8). Membranous area large and triangular-shaped caudally. Genitalia. Genital capsule in dorsal view: epandrium and surstyli brown. Epandrium longer than wide (MLE:MWE = 1.1). Surstyli rather asymmetrical, wider than long, both surstyli with a small inner finger-like projections, tip of both finger-like projections curved towards inner side, left surstylus with a broad projection at the base (Fig. 5 A). Genital capsule in ventral view: subepandrial sclerite wide without setae (Fig. 5 B); gonopods unequal, right is higher and broader than left one (Fig. 5 B); phallic guide strong and straight, pointed apically, lateraly with two downwards sclerotised hook-like projections shortly before the apex, right hook is longer than left one (Fig. 5 C). Phallus trifid with circular ejaculatory ducts (Fig. 5 B, C). Genital capsule in lateral view: both surstyli wide at the base with a small finger-like projection at apex (Fig. 5 E, F). Ejaculatory apodeme small, spade-shaped (Fig. 5 D).

Diagnosis

This species can be recognised by the shape of surstyli in dorsal view, wider than long, both surstyli with a small inner finger-like projection apically, left surstylus with a broad projection at outer side (Fig. 5 A); phallic guide strong and straight with two laterally hook-like projections shortly before the apex (Fig. 5 C).

Etymology

The specific name is derived from the Latin bihamatus which means "with two hooks" and references the two lateral hooks on its phallic guide.

Distribution

Iran (Fig. 6 ).

Notes

Based on DNA barcodes, Eudorylas bihamatus sp. n. is genetically most similar to E. corniculans sp. n. (5.26% pairwise divergence).

Figures

Figure 4. Male of Eudorylas bihamatus Motamedinia & Skevington sp. n. (JSS 52315) (A) habitus in dorsal view; (B) habitus in lateral view. Scale bar = 1 mm.

Figure 5. Male genitalia of Eudorylas bihamatus Motamedinia & Skevington sp. n. (JSS 52191) (A) in dorsal view; (B) in ventral view; (C) phallus and phallic guide in ventrolateral view; (D) ejaculatory apodeme; (E, F) in lateral view.

Figure 6. Eudorylas species distribution in the Middle East.