Chloropsina flavipes Riccardi, 2024

Riccardi, Paula Raile & Ang, Yuchen, 2024, New species and new records of Chloropinae from Singapore (Diptera: Chloropidae), Zootaxa 5458 (1), pp. 83-92 : 85-86

Chloropsina flavipes Riccardi , sp. nov.

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Figs. 2A–F

Type specimen. Holotype ♂ SINGAPORE, Nee Soon Swamp Forest ( NS1 ), 1°23’00.3’’N, 103°48’46.5’’E, 27m, Freshwater Swamp Forest, Malaise trap, 06.vi.2012, Mangrove Insect Project leg. ( ZRCBDP0308105 , failed barcode).

Diagnosis. Ocellar triangle wide, glossy brown, convex on the apical edges; postpedicel slightly elongated; scutum glossy brown with the posterior margin pruinose, longitudinal stripes faint, pale pilosity; scutellum dark brown, as long as wide; apical scutellar setae approximated; legs yellow; mesolobus and anal sclerite drop-shaped; surstylus with acute apex, directed medially.

Description Male. Body length 2 mm; wing length 1.5 mm. Body with dark brown ground color, pale pilosity on head and scutum, black pilosity on scutellum and abdomen. Head. Ocellar triangle shiny, occupying almost the entire frons, without longitudinal sulcus, convex on the apical edges; gena linear, yellow; palpus yellow; postpedicel reniform, 1.3 times longer than high, brown dorsally; arista brown, about as long as ocellar triangle, with short and scarce pilosity; only the short ocellar and postocellar setae distinct. Thorax. Scutum glossy brown with the posterior margin with grey pruinosity, longitudinal stripes black; scutellum slightly pruinose, with long and approximated apical scutellar setae; 1+1 notopleural setae; halter with dark stem and white knob; pleuron glossy brown, slightly pruinose posteriorly. Legs yellow; tibial organ concolorous with tibia. Wing with second and third costal sectors equal in length; R4+5 and M1 subparallel; dm-m cell narrow; anal lobe reduced. Abdomen. Abdominal tergites dark brown, except for the base of tergite 1+2 with a narrow pale yellow transverse band. Male terminalia ( Figs. 2B–C, 2F ) with epandrium globular; surstylus apex pointed, with spines; mesolobus small, round apically; anal sclerite conical in profile; ephiphallus present; basiphallus quadrate; distiphallus smooth, as long as postgonite; preand postgonite same size; postgonite with one pair of setae, dentaded apically. Female. Unknown.

Etymology. The specific epithet “flavipes ” is derived from Latin meaning yellow leg, a distinctive feature of the species.

Barcode. Not available.

Remarks. Due to the absence of identification keys for the Oriental Chloropsina species, we checked their original descriptions and type images when available. Chloropsina flavipes . Images of the holotype of C. tagalica (Frey) (http://id.luomus.fi/GV.18538) deposited in the Finnish Museum of Natural History show that, despite the overall similarity with C. flavipes , this species has ocellar triangle with longitudinal sulcus in the apical half, palpus brown, gena not visible in profile, and round postpedicel.

Distribution. Singapore *.

Figures

FIGURE 2. Chloropsina flavipes sp. nov. diagnostic features. A, habitus (scale bar 1 mm). B, male terminalia, profile. C, male terminalia, ventral. D, head and thorax dorsal. E, wing. F, hypandrium + phallic complex ventral (scale bar 0.1 mm). Abbreviations: an sc, anal sclerite; ba, basiphallus; di, distiphallus; ep, epandrium; hy, hypandrium; me, mesolobus; ph, phallapodeme; ph sc, phallapodemic sclerite; po, postgonite; pr, pregonite; su, surstylus.