Strongylophthalmyia lowi 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 : 225-226

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.6070398
persistent identifier	https://treatment.plazi.org/id/03C587D8-FF92-FFA2-5EBD-F0C2E08D04EC
treatment provided by	Plazi
scientific name	Strongylophthalmyia lowi Evenhuis
status

Treatment

Strongylophthalmyia lowi Evenhuis , n. sp. ( Figs. 27 View FIGURES 26 – 33 , 39 View FIGURES 38 – 41 , 55 View FIGURES 54 – 61 , 68 View FIGURES 62 – 69 )

Diagnosis. This new species is similar to S. borneensis , n. sp. but can be easily separated from it by the completely hyaline wing (with a tinge of brown apically in S. borneensis due to dense microtrichia) and a hind tarsus that is shorter than the hind tibia (tarsus longer than the hind tibia in S. borneensis ).

Description. Lengths. Ƌ: body, 2.5–2.7 mm; wing, 2.8–3.0 mm. Male. Head: globular, shining black; face brown; gena brown, gray pollinose, row of short black hairs ventrally; occiput black; clypeus thin, brown; palpus black, appears [concealed in oral cavity] widened apically with stiff black hairs apically; proboscis black.

Antenna ( Fig. 27 View FIGURES 26 – 33 ) scape black, pedicel yellowish brown; flagellomere subrhomboid, rounded apically, longer than wide, yellowish brown with apicolateral regions dark brown, clothed with white hairs, with long, slender, slightly sinuous dark brown dorsal process densely clothed with white hairs, two times length of flagellomere; arista slightly shorter than dorsal process, styliform, bare.

Thorax ( Fig. 39 View FIGURES 38 – 41 ): shining black, postpronotum brownish black; mesonotum and scutellum sparsely clothed with short black hair-like setulae; pleura black; anepisternum with tuft of black hairs medially, a few minute white hairs along prealar suture; katepisternum with sparse 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 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 subequal in length to dm-cu; halter white.

WIP ( Fig. 55 View FIGURES 54 – 61 ). Generally a mixture of blue, green, magenta, and purple proximally, golden to orange posteromedially; apex of wing with spot of blue-green and purple, this color combination larger and more extensive in distal portion of radial field; radial field with successive thin bands of blue-green, magenta, golden, green, and blue from base to medial area; anal lobe with very thin subbasal band of golden and green color surrounded by blue and magenta, becoming purple and golden magenta distally.

Legs: coxae yellowish brown, femora black, yellow at extreme apex, tibiae yellow; fore coxa with 4 yellowish black hairs; fore femur ( Fig. 68 View FIGURES 62 – 69 ) dorsally with 4 strong black thorn-like spicules, ventrally with paired subbasal cluster of yellowish white hairs; tarsi white.

Abdomen: tergites I–II tan; tergites III–VI dark brown, with short sparse brown hairs, these hairs longest on tergites V–VI; sternites black.

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

Female. Unknown.

Material examined. Holotype ♂ and paratype ♂ from MALAYSIA (Peninsular): Gombak Valley, Lazy Dog stream, 3°19'N, 101°45'E, 23 Aug 2008, M. Földvári, over and along water ( HNHM) GoogleMaps . Holotype and paratype deposited in the Hungarian Museum of Natural History.

Distribution. Peninsular Malaysia.

Etymology. This species is named for my friend and colleague, Martyn Low, in thanks for his generosity in hosting me during my trip to Singapore and Malaysia in November–December 2013.

Strongylophthalmyia malayensis Evenhuis , n. sp. ( Figs. 28 View FIGURES 26 – 33 , 56 View FIGURES 54 – 61 , 69 View FIGURES 62 – 69 )

Diagnosis. This new species is similar to S. inundans , n. sp. and can easily be distinguished from it by having the dorsal antennal process much shorter than the head (much longer than head length in S. inundans ) and having a subbasal thorn-like cluster of hairs ventrally on the fore femur (lacking in S. inundans ).

Description. Lengths. Ƌ: body, 3.0– 3.4 mm; wing, 2.8–3.0 mm. Male. Head: globular; frons shining brown, yellow at ptilinal suture; ocellar tubercle black; face yellow; gena yellow, silvery pollinose, row of short yellowish white hairs ventrally; occiput brown, yellowish brown posteroventrally; clypeus thin, yellowish white; palpus bacilliform, unmodified, yellowish white, with a few short black hairs apically; proboscis brown.

Antenna ( Fig. 28 View FIGURES 26 – 33 ): scape and pedicel yellow; flagellomere yellow, ovoid, clothed with white hairs, with long, slender, slightly curved brown dorsal process densely clothed with decumbent white hairs, 1.5 times length of flagellomere; arista slightly longer than dorsal process, styliform, bare.

Thorax: shining; mesonotum and scutellum shining brown with yellowish brown squarish pre-scutellar area, sparsely clothed with short yellowish white hair-like setulae in dorsocentral and acrostichal rows; propleuron and katepisternum yellow, remaining pleura brownish yellow; anepisternum with numerous yellowish hairs along notopleural suture and ventrally, a few in single row along pleural suture; katepisternum with yellowish hairs ventrally near mid coxa.

Wing: hyaline; vein R2+3 nearly straight, ending in costa before level of crossvein dm-cu; crossvein r-m at basal one-fourth of cell dm; veins R4+5 and M1+2 slightly converging distally; crossvein dm-cu sloping to CuA1; last section of CuA1 to wing margin subequal in length to dm-cu; halter white.

WIP ( Fig. 56 View FIGURES 54 – 61 ): generally brassy colored throughout; some hints of blue-green in medial field posteriorly; anal lobe with spot of purple basally.

Legs: yellow; fore coxa with single long yellowish white hair; fore femur ( Fig. 69 View FIGURES 62 – 69 ) dorsally with small patch of 10 very short black thorn-like spicules mid-dorsally, ventrally with subbasal thorn-like cluster of orange-yellow hairs, dorsally with two long stiff yellowish lateral setae basally, three stiff shorter yellow setae distal to basal setae, dense stiff brownish hairs dorsolaterally, scattered stiff white hairs ventrally; tarsi white.

Abdomen: black, with short sparse brown hairs dorsally, these hairs longest on tergites V–VI.

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

Female. Unknown.

Material examined. Holotype ♂ ( BPBM 17815 About BPBM ) from MALAYSIA ( Peninsular ) : Pahang, King George V National Park, Kuala Tahang [4.373987°N, 102.411709°E], 7–14 Dec 1958, J.L. Gressitt ( BPBM. Paratypes: MALAYSIA (Peninsular) GoogleMaps : Selangor, 1♂, Ulu Langat [3.293099°N, 101.672570°E], 300–390 m, 13 Jun 1958, T.C. Maa ( BPBM); 2Ƌ GoogleMaps , Kuala Lumpur, Templer Park [3.294210°N, 101.616196°E], 14 Jun 1953, D.K. McAlpine (AMS). Holotype in the Bishop Museum, Honolulu GoogleMaps . Paratypes in BPBM and AMS.