Strongylophthalmyia caestus Evenhuis

Evenhuis, Neal L., 2016, World review of the genus Strongylophthalmyia Heller (Diptera: Strongylophthalmyiidae). Part I: Introduction, morphology, species groups, and review of the Strongylophthalmyia punctata subgroup, Zootaxa 4189 (2), pp. 201-243 : 213-214

publication ID	https://doi.org/ 10.11646/zootaxa.4189.2.1
publication LSID	lsid:zoobank.org:pub:6AE6BFFF-C89E-4BBA-A2BE-CE648ECBD4D
DOI	https://doi.org/10.5281/zenodo.6070380
persistent identifier	https://treatment.plazi.org/id/03C587D8-FF86-FFB6-5EBD-F521E0770086
treatment provided by	Plazi
scientific name	Strongylophthalmyia caestus Evenhuis
status

Treatment

Strongylophthalmyia caestus Evenhuis , n. sp. ( Figs. 12 View FIGURES 10 – 17 , 19 View FIGURES 18 – 25 )

Diagnosis. This species is similar to S. phillindablank , n. sp. due to general body coloration and both possessing a bifid palpus, but can be distinguished from it based on the palpus being glove-shaped (palpus bifid but not gloveshaped in S. phillindablank ).

Description. Lengths. Ƌ: body, 2.3 mm; wing, 2.2 mm. Male. Head: globular; frons shining black, brown above antennae, yellow margin to ptilinal suture; face gray; gena yellowish white, with row of short yellow hairs ventrally; occiput dark brown, yellowish brown posteroventrally; clypeus thin, yellowish; palpus ( Fig. 12 View FIGURES 10 – 17 ) narrow basally, yellowish white, with large blackish clubbed apex in the shape of a boxing glove, row of sparse stiff black hairs on “thumb”; proboscis yellow.

Antenna ( Fig. 19 View FIGURES 18 – 25 ): scape and pedicel yellow; flagellomere ovoid, slightly higher than wide, yellow with brown apicolaterally, clothed with white hairs, with long, slender, slightly sinuous dorsal process densely clothed with white hairs, 1.5 times length of flagellomere; arista subequal in length to dorsal process, styliform, bare.

Thorax: shining; mesonotum and scutellum shining brown, sparsely clothed with short white hair-like setulae; postpronotum and pleura yellow; anepisternum bare medially, a few minute white hairs along prealar suture.

Wing: hyaline; vein R2+3 nearly straight, ending in costa before level of crossvein dm-cu; crossvein dm-cu almost perpendicular to CuA1; crossvein r-m before middle of cell dm; veins R4+5 and M1+2 parallel distally; halter white.

Legs: coxae yellowish-white; fore coxa with 3 long yellowish white hairs; fore femur white, yellowish white apically, dorsally with 8–10 short black thorn-like spicules in single row dorsally extending to apex of femur, ventrally with short stiff hairs; tibiae and tarsi yellowish-white.

Abdomen: brown, concolorous with dorsum of thorax, with short sparse brown hairs, these hairs longest laterally on tergites V–VI.

Male genitalia. Not dissected; epandrium and surstylus shining brown, with white hairs; cerci light brown, narrow basally, flared and rounded apically, with long white hairs dorsally, shorter black hairs apically and ventrally.

Female. Unknown.

Material examined. Holotype ♂ from the PHILIPPINES: [Negros Island]: Negros Oriental Province: Cuernos de Negros , 7 km west Valencia , 700 m, 15–21 Jul 1988, D.C. Darling, E. Mayordo, 873063, Malaise trap with pans ( ROM) . Holotype deposited in the Royal Ontario Museum, Toronto.

Distribution. Philippines.

Etymology. The species epithet derives from the Latin “ caestus ” = gauntlet or boxing glove, in reference to the boxing-glove shaped male palpus. The name is treated as a noun in apposition.