Oedematopiella sarae, Naglis, Stefan M., 2011

Naglis, Stefan M., 2011, Revision of the genus Oedematopus (Diptera, Dolichopodidae) with the description of a new genus and a key to the Neotropical genera of Hydrophorinae, Zootaxa 2756, pp. 40-52 : 48-50

Oedematopiella sarae sp. nov.

( Figs. 1 D, 5–7)

Type material. HOLOTYPE ɗ: “ Costa Rica, San Jose, San Antonio de Escazu, 2000 m, ix-x 1996, C. Flores & P. Hanson” [ INBio]. PARATYPES: 5 ɗ, same data as holotype [ INBio].

Description. Male. Length (holotype): body 4.4 mm, wing 4.6 mm; thorax 1.6 mm, abdomen 2.3 mm. Head: Face and clypeus with dense silvery-white pruinosity, ratio narrowest distance between eyes to distance between ocellar setae = 4.5; ratio height of face and clypeus to narrowest distance between eyes = 3.8; palpus narrow and pointed, dark with silvery-white pruinosity and brown hairs, with 2–3 strong apical setae; antenna dark brown; scape about twice as long as pedicel; pedicel about as long as high; first flagellomere ovate and about as long as high; arista dorsal and bare; frons with white pruinosity above antennae; vertex dark metallic green; pair of strong ocellar, and pair of small postvertical setae present; upper postoculars short and uniseriate, lower long, pale and multiseriate. Thorax: Mesonotum metallic green with violet reflections, with brown pruinosity, and silvery-white pruinosity on area of postpronotal lobe; ac absent; 6 strong dc present decreasing in size anteriad; scutellum with pair of strong setae, and with 2–4 smaller additional setae; pleuron with dense grayish pruinosity; propleuron with fine pale hairs. Legs: Mostly dark brown, FII on basal 2/3, and FIII on basal 1/3 yellow; CI with pale hairs and some apical setae; FI with av row of short setae on basal 2/3; TI with ad setae at 1/4 and 1/2; with pd setae at 1/8 and 1/2; It 1 in apical third compressed and broadened, with ventral tuft of sinuous hairs on 2/3, twice as long as diameter of tarsomere ( Fig. 6 ) (MSSC), and with 2–3 strong apical setae; It2 strongly curved basally and U-shaped, compressed and strongly broadened, about 3 times as wide as It3, ventrally with field of minute hairs (MSSC); It3-5 with small ventral setae; FII with ventral row of 4–5 strong setae at middle, about 4 times as long as diameter of femur (MSSC); TII with ad/pd pair at about 1/8 and 1/2; FIII with ventral row of strong curved yellow setae along entire length, about twice as long as diameter of femur (MSSC); TIII with ad/pd pair at about 1/8 and 2/3. All claws well developed, pulvilli absent. Relative podomere ratios: I: 60:66:32:17:7:7:7; II: 55:74:45:25:6:4:6; III: 84:97:40:44:19:11:8. Wing: With brownish tinge; R4+5 and M converging before wing apex; cross-vein dm-cu at acute angle to posterior wing margin ( Fig. 1 D); RMx ratio: 2.5; CuAx ratio: 2.4; lower calypter pale yellow with brown rim, and fan of brown setae; halter pale yellow. Abdomen: Dark metallic green, with brown pruinosity; sternum 4 with dense apical hairs, lateral ones sinuate and twice as long as medians, segment forming hood for partially enclosing hypopygium. Male genitalia ( Fig. 7 ): with 2 narrow epandrial lobes, lateral lobe with 2 small setae, median lobe bare and sinuate; Vsur very small and narrow, with 1 small apical seta; Dsur with two lobes, lateral lobe L-shaped and pointed apically; cercus with two arms, lateral arm triangular, median arm with yellow flattened setae. Female: Unknown.

Etymology. The new species is named after my daughter Sarah.

Figures

FIGURE 1. Posterior part of wing: (A) Oedematopus crassitibia Van Duzee; (B) Oedematopus moraviensis sp. nov.; (C) Oedematopus vidua (Becker); (D) Oedematopiella sarae sp. nov. (scale bare = 0.5 mm).

FIGURE 6. Oedematopiella sarae sp. nov., male fore tarsomeres, left lateral view (scale bare = 0.1 mm).

FIGURE 7. Oedematopiella sarae sp. nov., male genitalia, left lateral view (scale bare = 0.1 mm).