Neuzina diminuta Marinoni & Zumbado

Marinoni, Luciane, Zumbado, Manuel A. & Knutson, Lloyd, 2004, tropical Region, Zootaxa 540, pp. 1-7 : 5-6

Neuzina diminuta Marinoni & Zumbado , new species ( Figs. 1–9 )

Description. Adult ( Fig. 1 ). General coloration: body dark brown, covered with gray pruinosity. Bases of most hairs and setae with rounded brown spots, including those on the head. Body length: 2–4.2 mm. Wing length: 1–2 mm.

Head ( Figs. 2, 3 ). Frons golden yellow, ocellar triangle and parafrontalia covered by gray pruinosity. Frons with anterior half black pilose; 1 strong upper orbital seta; ocellars and postocellars strong; postocellars slightly divergent; inner and outer vertical setae well developed. Scape and pedicel equal in length; postpedicel about three limes longer than pedicel; arista sub­basal, bearing long white hairs. Face slightly concave in profile, yellowish pollinose, with median black spot; parafacialia with black spot at side of antenna; gena black pilose.

Thorax ( Fig. 4 ). Mesonotum completely maculate, with brown spots at bases of hairs; sometimes the spots forming one poorly distinguished pair of median stripes anteriorly. Mesonotal suture incomplete. Setae: 1 proepisternal seta, short and fine, only slightly larger than proepisternal hairs; 2 notopleurals; 1 presutural; 1 postpronotal, 1 postsutural supra­alar; 2 postalars, 2 prescutellars dorsocentrals, 2 pairs of scutellars. No setae on pleura, except 1 anepisternal. Wing ( Fig. 4 ) infumate, with pale spots in cells m, r4+5, r2+3 and dm; r1 darker; margin of wing with pale stripe extending from cell m to cell r2+3. Veins R4+5 and M1+2 not converging apically; crossvein dm­Cu straight; A1+CuA2 complete to margin. Fore coxa completely gray pruinose, bearing some black setae anteriorly; fore femur brownish with medium broad yellow ring; fore trochanter yellow; fore tibia brown; fore tarsi 1 and 5 white. Mid coxa partly gray pruinose with strong black anterior setae. Hind coxa with strong lateroventral seta. Mid and hind femora brown, with irregular yellow maculae; mid and hind tibia mainly light yellow, brown apically; mid and hind tarsi mainly white.

Female ( Fig. 5 ). Sternite 8 reduced, posterior margin sinuate.

Male abdomen ( Figs. 6–9 ). Paramere well developed and elongate; no hairs observed. Gonopod well developed, shell shaped, concave, covering the aedeagus. Aedeagus flattened and largely membranous.

Type specimens. HOLOTYPE MALE: White rectangular label: “ COSTA RICA, Prov. Guanacaste, Bagaces, P.N. Palo Verde, Cerro Guayacan, 212 m, 9 May–9 Jun 1999. I Jiménez – Malaise, L/N 259350/389600 #56554.” Deposited at the Instituto Nacional de Biodiversidad de Costa Rica, INBio.

PARATYPES: 6 males and 7 females. COSTA RICA: Prov. Guanacaste, Bagaces, P.N. Palo Verde, 0.250 km NE de Estación, 60 m. 4 Jun–6 Jul 1999. I. Jiménez – Malaise, L/N 259200/388750#54001, white rectangular label: “INB0003462803, INBIOCRI COSTA RICA ” (1 male, INBio); idem, white rectangular label: “INB0003462789 INBIOCRI COSTA RICA ” (1 male, INBio); idem, white rectangular label: “INB0003462793 INBIOCRI COSTA RICA ” (1 male, DZUP); idem, white rectangular label: “INB0003462802 INBIOCRI COSTA RICA ” (1 female, INBio); idem, white rectangular label: “INB0003462807 INBIOCRI COSTA RICA ” (1 female, INBio); idem, 195 m., 5– 19 May 1999, I. Jiménez ­ Malaise, L/N_ 259750_388500 #52749”, white rectangular label: “INB0003417956 INBIOCRI COSTA RICA ” (1 female, INBio); idem, 9 May–9 Jun 1999, I. Jiménez – Malaise, L/N 259350/389600 #56554, (1 female, DZUP); idem, 17 Jun–4 Jul, I. Jiménez – Malaise, L/N 260952 /385020 #52767, (1 male, 1 female, USNM); idem, 19 May–15 Jun 1999, I. Jiménez – Malaise, L/N 260952 /385020 #52762, (1 male, USNM); idem, Murciélago, 8 km SW Cuajiniquil, 100 m., Jun 1989, GNP Biodiversity Survey, 320300, 380200, white rectangular label: “ COSTA RICA, INBIOCRI001052050” (1 female, DZUP). VENEZUELA: Guarico, Guarico Hato Masaguaral (44 km S. Calabozo), 20–28 May 1985, Menke & Carpenter (1 female, USNM). BRAZIL: Pará, Conceição do Araguaia, Jul 1959, M. Alvarenga (1 male, DZUP).

Etymology. The specific epithet diminuta is an Latin adjective referring to the small size of these flies.

Figures

FIGURES 1 – 4. Neuzina diminuta. Male. (1) Habitus; (2). Head, fronto­dorsal view; (3) Head, frontal view; (4) Wing.

FIGURES 5 – 9. Neuzina diminuta. (5) Female terminalia, ventral view; (6) male terminalia, left lateral view; (7) hypandrium; (8) male terminalia, right lateral view; (9) male terminalia, frontal view. Aedeagus (aed.); aedeagal apodeme (aed. ap.); anterior surstylus (a. s.); epandrium (ep.); gonopod (gon.); paramere (par.); posterior surstylus (p. s.); spiracle 6 (sp. 6); spiracle 7 (sp. 7); sternite 6 (st. 6); sternite 7 (st. 7); sternite 8 (st. 8).