Strongylophthalmyia thailandica 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 : 239-240

publication ID

publication LSID


persistent identifier

treatment provided by


scientific name

Strongylophthalmyia thailandica Evenhuis


Strongylophthalmyia thailandica Evenhuis , n. sp. ( Figs. 4–6 View FIGURES 1 – 4 View FIGURES 5 – 7 , 17 View FIGURES 10 – 17 , 37 View FIGURES 34 – 37 , 44 View FIGURES 42 – 45 , 61 View FIGURES 54 – 61 , 77 View FIGURES 70 – 77 )

Diagnosis. Most similar to S. thaii Papp (see above for characters both possess), but can be easily distinguished from it by the yellowish white antennal flagellomere (darker and with brown along the anterior edge in S. thaii ), medially yellow tergites I–IV (tergites I–II reddish brown and tergites II–V brown in S. thaii ) and the different pattern of dorsal spicules on the fore femur (3 spicules basally and 5 spicules apically in S. thailandica ; 5 spicules in S. thaii ).

Description. Lengths. Ƌ: body, 3.4–4.1 mm; wing, 3. 0–3.6 mm. Male. Head ( Fig. 5, 6 View FIGURES 5 – 7 ): globular; frons shining black, brown above ptilinal suture; face yellowish gray; gena yellow, silvery pollinose, row of short white hairs ventrally, longer black hairs anteriorly; occiput black; clypeus thin, yellow; palpus ( Fig. 17 View FIGURES 10 – 17 ) bacilliform, slightly bowed, length ca. six times width, with rounded apex, yellowish white with black apical one-fourth, with row of stiff black hairs ventrally, becoming longer and thicker apically; proboscis brown.

Antenna ( Fig. 37 View FIGURES 34 – 37 ) yellowish white; flagellomere subovoid, clothed with white hairs, with long, slender, slightly sinuous brown dorsal process clothed with erect white hairs, 1.5 times length of flagellomere; arista subequal in length to dorsal process, styliform, bare.

Thorax ( Fig. 44 View FIGURES 42 – 45 ): shining; mesonotum and scutellum shining black, sparsely clothed with short hair-like setulae; propleuron yellow, remaining pleura black; anepisternum with tuft of silvery white hairs medially, a few minute white hairs along prealar suture; katepisternum with white hairs ventrally near mid coxa.

Wing: hyaline; vein R2+3 nearly straight, ending in costa well beyond level of crossvein dm-cu; crossvein r-m just before middle of cell dm; veins R4+5 and M1+2 parallel distally; crossvein dm-cu sloping to CuA1; last section of CuA1 to wing margin slightly shorter than dm-cu; halter white.

WIP ( Fig. 61 View FIGURES 54 – 61 ): predominantly brassy colored with blue, blue-green and purple basally; thin band of blue along R1, then along costa to R4+5; purple and magenta colors at base of radial field, brassy medially, magenta to thin purple-colored distally; anal lobe with spot of brassy green basally, surrounded by thin band of purple and magenta, otherwise, brassy colored; thin streak of turquoise blue extending from base of cell dm past dm-cu crossvein into cubital field of wing, becoming diffuse into brassy color of posterior portion of wing at wing margin.

Legs: yellow, apex of fore femur white, tip of hind femur brown; fore coxa with 3 long yellowish white hairs; fore femur ( Fig. 77 View FIGURES 70 – 77 ) dorsally with short thorn-like spicules in two groups (3 long subbasally; 4–5 short subapically); tarsi white.

Abdomen: tergites I–II yellowish dorsally and laterally, yellow extending medially on tergites II–IV (and rarely V); remainder of abdomen brown, with scattered brown hairs dorsally and laterally.

Male genitalia. Not dissected; epandrium and surstylus shining dark brown, surstylus yellowish brown apically, 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 ♂ and 18♂ paratypes from THAILAND: Muang Paem [19.577026°N, 98.197443°E], 29 Oct 2002, D. Kovac ( TAU) GoogleMaps . Other paratypes: THAILAND: 3♂, 5 km SE Soppong [19.450570°N, 98.202218°E], 26 Oct 2002, A. Freidberg; 1Ƌ, same data except 1 km S GoogleMaps , 27 Oct 2002 ( TAU, BPBM); Kamphaeng Phet Province: 2Ƌ, Mae Wong National Park , checkpoint 65, 215 m, 16°2.333'N, 99°13.96'E GoogleMaps , 10–11 Aug 2007, pan trap T3770, W. Srolopien, R. Phumirate (CNC); 1Ƌ, Chiang Mai Province, Chiang Mai, botanical garden, QSBG, 18.8955°N, 98.8636°E GoogleMaps , 11–25 Jul 2013, M. Hauser ( CSCA). Holotype deposited in Tel Aviv University . Paratypes in TAU, CSCA, CNC, and BPBM.

Distribution. Thailand.

Etymology. This species is named for the country of the type locality.


Tel-Aviv University


Bishop Museum


California State Collection of Arthropods