Eudorylas corniculans 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 corniculans Motamedinia & Skevington, 2020 sp. n.

Materials

Type status: Holotype. Occurrence: catalogNumber: JSS52187 ; recordedBy: M. Zardouei; individualCount: 1; sex: male; lifeStage: adult; associatedSequences: GB: MN549644; Taxon: scientificName: Eudorylascorniculans; Location: country: Iran; stateProvince: Kermanshah; locality: Sarpolezahab ; decimalLatitude: 34.466667; decimalLongitude: 45.816667; Event: samplingProtocol: Malaise trap; eventDate: 2016-05-14; Record Level: institutionCode: CNC Type status: Paratype. Occurrence: catalogNumber: JSS52206 ; recordedBy: E. Gilasian; individualCount: 1; sex: female; lifeStage: adult; associatedSequences: GB: MN549645; Taxon: scientificName: Eudorylascorniculans; Location: country: Iran; stateProvince: Khuzestan; locality: Shush ; decimalLatitude: 32.1; decimalLongitude: 48.433333; Event: samplingProtocol: Malaise trap; eventDate: 2015-03-11 /05-10; Record Level: institutionCode: CNC Type status: Paratype. Occurrence: catalogNumber: JSS52237 ; recordedBy: E. Gilasian; individualCount: 1; sex: female; lifeStage: adult; associatedSequences: GB: MN549655; Taxon: scientificName: Eudorylascorniculans; Location: country: Iran; stateProvince: Khuzestan; locality: Shush ; decimalLatitude: 32.1; decimalLongitude: 48.433333; Event: samplingProtocol: Malaise trap; eventDate: 2015-03-11 /05-10; Record Level: institutionCode: CNC Type status: Paratype. Occurrence: catalogNumber: JSS52312 ; recordedBy: M. Parchami-Araghi; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Eudorylascorniculans; Location: country: Iran; stateProvince: Khuzestan; locality: Shush ; decimalLatitude: 32.1; decimalLongitude: 48.433333; Event: samplingProtocol: Malaise trap; eventDate: 2013-06-29 /07-04; Record Level: institutionCode: HMIM Type status: Paratype. Occurrence: catalogNumber: JSS50776 ; recordedBy: A. Maklakov; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Eudorylascorniculans; Location: country: Israel; locality: Nahal Shezaf ; decimalLatitude: 30.716667; decimalLongitude: 35.266667; Event: samplingProtocol: Malaise trap; eventDate: 1997-11-30; Record Level: institutionCode: TAU Type status: Paratype. Occurrence: catalogNumber: JSS50785 ; recordedBy: A. Maklakov; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Eudorylascorniculans; Location: country: Israel; locality: Nahal Shahaq ; decimalLatitude: 30.733333; decimalLongitude: 35.233333; Event: samplingProtocol: Malaise trap; eventDate: 1997-07-01; Record Level: institutionCode: TAU

Description

Male (Fig. 9 A, B). Body length (excluding antennae): 3.2-3.3 mm (n = 2). Head. Scape, pedicel and arista dark brown, pedicel with a pair of short upper and lower bristles, lower bristles as long as upper bristles, flagellum tapering and light brown pruinose (LF:WF = 3.0); arista with thickened base. Eyes meeting for a distance of 8-9 facets. Frons dark silver-grey pruinose. Vertex black, bearing an elevated slightly ocellar triangle. Occiput dark and grey and brown pruinose with a row of long setae along posterior margin. Thorax. Postpronotal lobe light brown, grey pruinose and with four to five postpronotal light brown bristles along upper margin (up to 0.05 mm). Prescutum and scutum black, predominantly grey-brown pruinose, with two uniseriate dorsocentral rows of dark bristles and longer supra-alar bristles. Scutellum black with 8 thin short setae along posterior margin (up to 0.05 mm). Subscutellum dark brown, grey pruinose. Pleura dark brown. Wing. Length: 3.2-3.3 mm. LW:MWW = 2.8. Wing almost entirely covered with microtrichia. Pterostigma dark-brown and complete. LS:LTC = 1.0. LTC:LFC = 1.1. Cross-vein r-m reaches dm shortly after one-third of the cell’s length. M1 strongly undulating in middle. Halter length: 0.5 mm, base dark, stem and knob narrowly light brown. Legs. Coxae dark brown, grey pruinose. Trochanters somewhat light brown partly grey pruinose. Femora brown with pale apices, grey pruinose. Mid and hind femora bearing two rows of dark anteroventral small spines in apical half. Tibiae light brown, grey pruinose, with two rows of short setae on anterior side and three rows on posterior. Hind tibia with one or two wrinkled indentations in middle without erect anteromedial setae. Tarsi yellowish with scattered dark setae at anterior margin. Pulvilli yellow. Claws brown with black tips. Abdomen. Ground colour dark brown, tergite 1 silver-grey pruinose, with three long (up to 0.2 mm) and two short (up to 0.08 mm) dark lateral bristles. Tergite 2 silver-grey pruinose. Tergites 3-5 brown pruinose with scattered brown setae. Sternites white-yellow laterally with dark mid-line centrally, grey pruinose. Syntergosternite 8 enlarged, dark brown and grey pruinose. Membranous area small. Genitalia. Genital capsule in dorsal view: epandrium dark brown and surstyli light brown, grey pruinose. Epandrium longer than wide (MLE:MWE = 1.59) (Fig. 10 A). Surstyli perpendicular to the epandrium. Right surstylus broader than left surstylus at the base, with two finger-like projections at the apex, inner finger-like projection longer than the outer one and slightly curved towards left surstylus (Fig. 10 B). Left surstylus with an inner finger-like projection at the apex which is slightly broader and longer than the inner finger-like projection of right surstylus (Fig. 10 B). Genital capsule in ventral view: subepandrial sclerite wide (Fig. 10 C). Gonopods unequal, right gonopod slightly higher than the left one (Fig. 10 C), left gonopod with a long finger-like projection towards surstyli in ventrolateral view (Fig. 10 D). Genital capsule in lateral view: phallus trifid, long and circular, with strong membranous sheath; phallic guide strong, divided at base, right phallic guide with a projection in the middle which is divided by two branches, a downward branch being longer than upward one (Fig. 10 E, G); ejaculatory apodeme spade-shaped (Fig. 10 F).

Female. Body length (excluding antennae): 3.0 mm (n = 2). Eyes separated. Scape and pedicel dark brown; flagellum light brown, long tapering. Frons grey pruinose. Occiput grey pruinose. Postpronotal lobe light brown with 3-4 bristles along upper margin (up to 0.05 mm). Scutum black, brown pruinose with scattered setae at anterior supra-alar area. Wing Length: 3.2 mm. LW:MWW = 2.0. Pterostigma light-brown and complete (LS:LTC = 1.0, LTC:LFC = 1.0). Coxae and trochanters dark brown. Femora, tibiae and tarsi light brown; mid coxa with 4-5 black anterior bristles; mid tibia with 3-5 long apical bristles. Femora bearing two small ventral rows of dark peg-like spines in the apical third. Tergites 1-2 grey pruinose, tergites 3-5 posterolaterally grey pruinose, otherwise brown pruinose. Ovipositor. Viewed laterally: base of ovipositor light brown, piercer short (LP = 0.3 mm) and dark brown, base of piercer straight, distinctly bent towards sternite in distal third and reaching sternite 4. LP:LB = 2.0. LDP:LPP = 1.25(Fig. 11 A, B).

Diagnosis

This species can be distinguished by the specific shape of the phallic guide, divided at the base, right phallic guide with two branched projections in the middle (Fig. 10 D); strong membranous sheath (Fig. 10 E, G), left gonopod with a long upward finger-like projection (Fig. 10 D).

Etymology

The specific epithet is derived from the Latin corniculans , the diminutive form of cornuatus which means horned and references the shape of the phallic guide.

Distribution

Iran, Israel (Fig. 12 ).

Notes

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

Figures

Figure 9. Male of Eudorylas corniculans Motamedinia & Skevington sp. n. (JSS 52187; most of abdomen removed for terminalia dissection) (A) habitus in dorsal view; (B) habitus in lateral view. Scale bar = 1 mm.

Figure 10. Male genitalia of Eudorylas corniculans Motamedinia & Skevington sp. n. (JSS 52187) (A) in dorsal view; (B) surstyli in dorsal view; (C) in ventral view; (D) in lateral-ventral view; (E, G) in lateral view; (F) ejaculatory apodeme.

Figure 11. Female of Eudorylas corniculans Motamedinia & Skevington sp. n. (JSS 52206) (A) habitus in lateral view; (B) ovipositor in lateral view. Scale bar = 0.25 mm.

Figure 12. Eudorylas species distribution in the Middle East.