Phytobia amazonica, Sousa & Couri, 2017

Sousa, Viviane Rodrigues de & Couri, Márcia Souto, 2017, Phytobia (Diptera: Agromyzidae) from Brazil: new species, new record and a key to the Neotropical species, Zoologia (e 12308) 34, pp. 1-25 : 2-3

Phytobia amazonica sp. nov.

http://zoobank.org/ 63C7585F-A5C8-43B0-8861-824D64C613CD

Figs 1, 5, 26, 36–38

Type material. Holotype ♂: BRASIL, RO [Rondônia]: Campo Novo. Fazenda Amorim. 10°40’6”S, 63°29’0”W – 248m, Malaise, 03–15.xii.2011, Amorim, Ament & Riccardi cols. [ MZUSP] ( Fig. 1).

Description. Male. Body length 2.0 mm; wing length 2.2 mm ( Fig. 5).

Female. Unknown.

Color. Frons mat black; fronto-orbital plate black, weakly shining; upper dark orbit touching ovt and ivt; ocellar triangle black, greyish pollinose; lunule silvery; face greyish-brown; clypeus black subshining; gena dark brown; scape and pedicel brown; first flagellomere dark brown; arista and palpus brown; proboscis and labellum yellow, with yellow setae; scutum slightly shining black, with yellow area before scutellum and forming two distinct bands divided by narrow yellow stripe ( Fig. 26); scutellum light yellow; postpronotum light yellow, with brown small basal spot; notopleuron and anepimeron light yellow; anepisternum light yellow, with brown area at base; katepimeron light yellow, katepisternum and meron brown; haltere entirely light yellow; calypters light yellow, with margin and fringe black; wing clear; legs brown with fore knees brownish-yellow; pulvilli yellow; abdomen yellow, with brown middle stripe on tergite 5 and tergite 6; terminalia brown.

Head. Frons slightly visible above eye margin in lateral profile; 2 reclinate ors and 2 inclinate ori, similar in size; orbital setulae slightly reclinate in one row; facial keel differenciated, extending to bases of antennae, slightly widening below; eye height/parafacialia+gena: 5; ocellar triangle short, ending before second ors; lunule high, about 20% of frons length; clypeus rounded; epistoma height 0.06 mm; first flagellomere rounded and finely pubescent; arista long, almost same vertical height of eye, finely pubescent; vibrissa long and strong, measuring half of aristal length.

Thorax. Acr in eight irregular rows; prsc absent; 1+3 dc, first presutural broken, second and third long, last one a little stronger; 2 npl, posterior one shorter. Wings. Wing tip nearer to R 4+5 than to M; R 4+5 and M slightly recurved; C sections 2–4 in proportion: 0.58: 0.23: 0.17; ultimate section of CuA 1 0.8 length of basal section; r-m basal to midpoint of dm. Legs. Fore tibia without pd, mid tibia with 3 pd on middle third.

Terminalia. Epandrium rounded with long setae and two strong spines at base; cercus long, 2/3 height of epandrium, setulose with distinct seta at apex; postgonite with three basal setae in ventral view; surstylus with 10–11 setae; hypandrium U-shaped; phallapodeme about three times length of hypandrium; mesophallus bulb-shaped; distiphallus short, with same length of mesophallus and sclerotized at base ( Figs 36, 37); ejaculatory apodeme very broad, at its broader part about 4.5 times wider than constricted area at base ( Fig. 38).

Distribution. Rondônia ( Brazil).

Etymology. The specific epithet refers to the Amazonian Rain Forest biome, where the species was found.

Remarks. This new species differs from congeners by the chaetotaxy of the mid tibia with 3 pd median setae, postgonite with three basal setae, surstylus with 10–11 setae, distiphallus with median constriction, and ejaculatory apodeme very broad.