Eudorylas nasicus 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

publication ID

https://dx.doi.org/10.3897/BDJ.8.e53609

publication LSID

lsid:zoobank.org:pub:616668E2-3F9C-4652-A41C-DAB664204656

persistent identifier

https://treatment.plazi.org/id/7B5D9EDD-C989-5BAD-B19E-E131A2419EBF

treatment provided by

Biodiversity Data Journal by Pensoft

scientific name

Eudorylas nasicus Motamedinia & Skevington, 2020
status

sp. n.

Eudorylas nasicus Motamedinia & Skevington, 2020 sp. n.

Materials

Type status: Holotype. Occurrence: catalogNumber: JSS50793 ; recordedBy: A. Freidberg; individualCount: 1; sex: Male; associatedSequences: GB: MN549667; Location: country: Israel; locality: Zomet Ha'Amaqim (Jalame) ; decimalLatitude: 32.716; decimalLongitude: 35.10; Event: eventDate: 1993-05-18 /22; Record Level: institutionCode: TAU GoogleMaps

Description

Male (Fig. 16 View Figure 16 A-C). Body length (excluding antennae): 3.9 mm. Head. Scape dark with 1-2 dark upper bristles, pedicel brown with two long and two short upper bristles and two long lower bristles, flagellum tapering and brown pruinose (LF:WF = 3.0); arista with thickened base. Eyes meeting for a distance of 15-17 facets. Frons dark brown pruinose with a weak median shining tubercle. Vertex black, bearing an elevated ocellar triangle. Occiput dark with scattered dark bristles. Thorax. Postpronotal lobe light brown, grey pruinose and with 2-4 postpronotal light brown bristles along upper margin (up to 0.05 mm). Prescutum and scutum black, predominantly brown pruinose, with two uniseriate dorsocentral rows of dark bristles and longer supra-alar bristles. Scutellum black, brown pruinose with 14 thin short setae along posterior margin (up to 0.05 mm). Subscutellum and pleura dark brown, grey pruinose. Wing. Length: 4.1 mm. LW:MWW = 4.0. 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 moderately undulating in middle. Halter length: 0.5 mm, base and knob dark brown, stem narrowly light brown. Legs. Coxae dark brown, grey pruinose. Fore and hind coxae with four to five short brown setae and mid coxa with two long dark setae and three brown setae on inner apical corner. Trochanters somewhat light brown partly grey pruinose. Fore femur dark brown with pale apices, grey pruinose bearing two rows of dark anteroventral small spines in apical half. Tibiae dark brown, grey pruinose, with two rows of short setae on anterior side and three rows on posterior. Tarsi light brown with scattered dark setae at anterior margin. Pulvilli yellow. Claws light brown with black tips. Abdomen. Ground colour dark brown, tergite 1 brown pruinose, with three to four long dark (up to 0.16 mm) and five to six short (up to 0.08 mm) brown lateral bristles. Tergites 2-5 brown pruinose with scattered brown setae. Sternites brown with some scattered dark setae. Membranous area ovate. Genitalia. Genital capsule in dorsal view: epandrium brown, grey pruinose. Epandrium longer than wide (MLE:MWE = 1.2) (Fig. 17 View Figure 17 A). Both surstyli rather rectangular-shaped at base. Left surstylus triangular-shaped in apical one third. Right surstylus broader than left one, with a small projection at outer margin in middle and with a longer finger-like projection at inner margin shortly before its apex, pointing towards left surstylus (Fig. 17 View Figure 17 A). Genital capsule in ventral view: subepandrial sclerite wide (Fig. 17 View Figure 17 B). Gonopods unequal, right gonopod higher than the left one. Phallus trifid; phallic guide short, broad and straight, with a long lateral projection towards right gonopod horizontally and bent upwards at its apex (Fig. 17 View Figure 17 B). Genital capsule in lateral view: phallic guide straight with a small dorsolateral projection before its apex (Fig. 17 View Figure 17 D). Left surstylus rounded with a finger-like projection apically and with a ventral margin distinctly concave in apical one third (Fig. 17 View Figure 17 D). Right surstylus broadened at base with two finger-like projection apically, the longer one is situated ventrally before the apex and the shorter one arising from the apex (Fig. 17 View Figure 17 E). Ejaculatory apodeme spade-shaped (Fig. 17 View Figure 17 C).

Diagnosis

This species can be recognised by asymmetrical surstyli in dorsal view, both surstyli rather rectangular-shaped at base, left surstylus triangular-shaped in apical one third, right surstylus with an inner finger-like projection shortly before its apex, pointing towards left surstylus in dorsal view and with small projection at outer margin in middle (Fig. 17 View Figure 17 A); gonopods unequal, right slightly higher than left one in ventral view (Fig. 17 View Figure 17 B); phallus trifid; phallic guide short and straight, with a long lateral projection towards right gonopod horizontally and bent upwards at its apex in ventral view (Fig. 17 View Figure 17 B). Phallic guide with a small but distinct dorsal projection shortly before its apex in lateral view (Fig. 17 View Figure 17 D, E).

Etymology

The specific epithet is derived from the Latin nasicus (= nose), referring to the long projection of the right surstylus in dorsal view.

Distribution

Israel (Fig. 6 View Figure 6 ).

Taxon discussion

Male E. nasicus sp. n. can be identified by the shape of surstyli and phallic guide, which place it in close relation to E. unicolor , E. wahisi and E. pannonicus. The right surstylus of all four of these species shows an inner finger-like projection in dorsal view and the phallic guide has a distinct projection in ventral view. Compared to E. unicolor , the right surstylus of E. nasicus sp. n. has a distinct small projection at the outer margin in the middle in dorsal view (Fig. 17 View Figure 17 A), whereas in E. unicolor , it does not have a distinct small projection at the outer margin in the middle (see Kehlmaier 2005a: Fig. 67j). Meanwhile, in E. nasicus sp. n., the left surstylus in lateral view is rounded (circle-shaped), with a finger-like projection apically and with a ventral margin distinctly concave in the apical one third (Fig. 17 View Figure 17 D), whereas in E. unicolor , the left surstylus is not rounded and has the ventral margin distinctly concave from the base to the apex. In E. wahisi , the finger-like projection of right surstylus is wider and the lateral projection of the phallic guide is long (see Kehlmaier 2005a: Fig. 68a, j). In E. pannonicus , the finger-like projection of right surstylus is longer and the right gonopod has two distinct projections (Fig. 18 View Figure 18 B).

Notes

DNA barcodes of Eudorylas nasicus sp. n. and E. pannonicus are similar. See the notes under E. pannonicus .

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Pipunculidae

Genus

Eudorylas