Enderleiniella marshalli, Mlynarek, Julia J., 2019

Mlynarek, Julia J., 2019, Revision of the New World genus Enderleiniella Becker, 1912 (Diptera, Chloropidae), ZooKeys 884, pp. 107-134 : 107

Enderleiniella marshalli sp. nov. Figs 35-37 , 38-41

Diagnosis.

Small Oscinellinae with a shiny frontal triangle and sparsely pruinose thorax. Scutellum trapezoidal. Male postabdomen small with parallel sided surstylus.

Description.

Total length 2.0-2.5 mm. Overall colour black. Head. Frontal triangle black, shiny, microtomentose, 0.7-0.8 times length of frons; ocellar tubercle black, shiny, microtomentose; frons black, paler antero-medially; cephalic setae dark, 6-8 fronto-orbital setae weak-developed, interfrontal setulae on margin of frontal triangle and fronto-orbital setulae sparse and small, five or six post-ocellar setulae small; gena white, margin of gena black, microtomentose, 0.08-0.1 times eye height; eye hairy; face yellow; scape yellow, pedicel yellow to brown, first flagellomere black, reniform, arista yellow distally darkening brown, thin at base, pubescence sparse and short; palpus, clypeus and proboscis brown to black in females, palpus yellow, clypeus and proboscis brown to black in male; proboscis regular. Scutum. Black, pruinose, acrostichal and dorsocentral setae in three punctuate rows, notopleural bristle one anterior and one posterior relatively thick and long; outer postalar setae strong, black; dorsocentral setae strong, scutum as long as wide or marginally longer than wide; scutellum black, trapezoidal, 1.4-1.5 times wider than long, microtomentose, rugose; apical scutellar setae strong, on small tubercles on upper margin of scutellum, lateral scutellar setae as small, marginally larger than other dorsal setae. Legs. Yellow, fore-tarsi, mid and hind femur and tibia dark distally; femoral organ present as a row of three sensillae, tibial organ linear, brown, paler than leg, occupying middle quarter of hind tibia. Wing. Hyaline; veins brown; ratio of costal sectors C1: C2: C3: C4 - 1: 1.6: 1.2: 0.6; haltere, white. Abdomen. paler than thorax, sparsely microtomentose; syntergites 1+2 membranous under scutellum, marginally longer than other tergites. Male postabdomen ( Figs 38-40 ). Epandrium small, higher than long in lateral view, wider than high in posterior view, with many setae; surstylus 0.7 height of epandrium, with slight curve basally, parallel-sided, with short setae elsewhere; cercus small, extending ventrally, with sparse setae, one seta longer than others; hypandrium open; distiphallus weakly sclerotised.

Type material.

Holotype ♂: COSTA RICA: Guanacaste: Cacao Field Stn., carrion traps, 700m, 13-15.ii.1996, S. A. Marshall (DEBU). Paratypes: same data as holotype (4♀, DEBU); Guanacaste: Estacion Santa Rosa, 300m,16.ii.1996, S. Marshall, Borde del Rio, L_N_313000_359800 #6920, INBIO CRI002239665 (1♀, INBio). ♂: COSTA RICA: Prov Guanacaste, Cañas, Palmira, Sector Rio Corobici. 224m, 10-15.x.2002, J.D. Gutiérrez, Libre, L_N_281200_416500 #71957 (INBio). Paratypes: Prov Guanacaste, Bagaces, Fortuna, Z.P. Miravalles, Send. Cabro Muco, 980m, 1-15.viii.2002. J.D. Gutiérrez, Red de Golpe L_N_299151_410000 #64536 (1♂, INBio); same data as except 12.iv.2002, L_N_299151_410000 #67730 (1♀, INBio); Prov Cartago, Cartago, P.N. Barbilla, Camino a Valle Escondido, Rio Dantes, 400-500m, 17.ix.2001, F. Rojas, f. Umaña, Libre, L_N_281200_594300 #64657 (1♀, INBio).

Etymology.

This species is named in honour of Steve Marshall, collector of the type series, in recognition of his contributions to our knowledge of Central American acalyptrate Diptera .

Figures

Figures 35 - 37. Enderleiniella marshalli. 35 Lateral habitus 36 dorsal habitus 37 geographic distribution.

Figures 38 - 41. Enderleiniella marshalli. 38 Male genitalia (lateral) 39 male genitalia (posterior) 40 male genitalia (ventral) 41 male genitalia (posteroventral).