Phytobia flavifrontalis, 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 : 6-7

Phytobia flavifrontalis sp. nov.

http://zoobank.org/ 8786200C-AB8A-4F68-B10F-A674122E7732

Figs 2, 10, 11, 30, 50–54

Type material. Holotype ♂: BRASIL, RO [Rondônia]: Monte Negro. Setor Chacareiro. 10°16’21.4”S, 63°20’45.4”W – 186m. 20.v.2012. Sousa, V. R. col. [ MZUSP] . Paratypes: 1 ♂, Campo Novo. Fazenda Amorim. 10°40’6”S, 63°29’0”W – 248m . Malaise. 03–15.xii.2012. Amorim, Ament & Riccardi cols. [ MNRJ] ; 1 ♂, BRASIL, MT [Mato Grosso]: Chapada dos Guimarães (Cerrado) – Trilha da Pedra – final (mirante). 15°24’21.8”S, 055°50’07.5”W. Malaise 22. 17.i-09.iii.2012. Lamas, Nihei & Eq. cols. [ MNRJ] ; 1 ♀, Parque Nacional Chapada dos Guimarães. Cachoeira Véu de Noiva – Mata ciliar. 15°24’33.4”S, 55°49’54.1”W. Malaise 45. 20.ix-31.x.2012. Lamas, Nihei & Eq. cols. [ MZUSP] ( Fig. 2) .

Description. Male. Body length 1.7 mm; wing length 1.9 mm ( Fig. 10).

Female. Body length 2.3 mm; wing length 2.0 mm ( Fig. 11).

Color. Frons egg yellow in lower half and yellow with pollinose silver on upper half; fronto-orbital plate yellow; upper dark orbit touching ovt and yellowish in ivt; ocellar triangle brownish-black; lunule and face greyish-yellow; clypeus dark subshining; gena yellow; scape and pedicel dark brown, first flagellomere dark brown, orange anteriorly; arista brown; palpus yellow, with black and yellow setae apically; proboscis yellow; labellum yellow, with yellow setae; scutum brown, grey pollinose, light greyish-yellow before scutellum ( Fig. 30); scutellum light greyish-yellow, with one brown spot laterally on basal middle; postpronotum and notopleuron light yellow; anepimeron and anepisternum brown anteriorly and yellow posteriorly; katepimeron light yellow, katepisternum dark brown, yellowish on upper part; meron dark brown with yellow transversal band upperly; haltere entirely yellow; calypters light yellow, with margin and fringe black; wing clear, yellow at base; legs dark brown, with fore knees yellow; pulvilli yellow; abdomen yellow, tergite 5 with brown median spot, tergite 6 with brown median stripe and brown lateral round spot; terminalia entirely brown.

Head. Frons not visible above eye margin in lateral profile; 2 reclinate ors and 2 inclinate inwards ori, ori slightly thinner and shorter than ors; orbital setulae thin and short, slightly reclinate in one row; facial keel undifferenciated; eye height/ parafacialia+gena: 5.5; ocellar triangle short, ending before second ors; lunule a little high, about 14% of frons length; clypeus rounded; epistoma height 0.01 mm; first flagellomere rounded and finely pubescent; arista long, slightly longer than vertical height of eye, finely pubescent; vibrissa short and strong, measuring about 1/3 of aristal length.

Thorax. Acr in seven irregular rows; prsc absent; 1+3 dc, increasing size from presutural to third postutural; 2 npl, similar in size. Wings. Wing tip between R 4+5 and M; R 4+5 and M straight; C sections 2–4: 0.66:0.16:0.16; ultimate section of CuA

1

0.8 length of basal section; r-m at midpoint of dm. Legs. Fore tibia without pd; mid tibia with 2 pd on middle third.

Terminalia. Epandrium rounded with long setae; cercus long, about 2/3 height of epandrium and with long setae; postgonite with basal seta in ventral view; surstylus rounded with about 11–18 setae; hypandrium U-shaped; phallapodeme about 2.5 times length of hypandrium; distiphallus as in Figs 50 and 51; ejaculatory apodeme broad, at its broader part about 4.1 times wider than constricted area at base ( Fig. 52). Oviscape ( Fig. 53). Spermathecae ( Fig. 54).

Distribution. Rondônia and Mato Grosso ( Brazil).

Etymology. The specific epithet refers to the egg-yellow frons of the species.

Remarks. This new species resembles P.pipinna (Sasakawa, 1992) from Peru in the yellow coloration of the body, but can be differentiated by the short wing and body length, scape and pedicel dark brown, frons conspicuously egg yolk yellow in lower half and yellow silver pollinose on upper half, one seta on postgonite, surstylus with about 11–18 setae, phallus shape, and the broad ejaculatory apodeme.