Phytobia pyri, 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 : 15-17

Phytobia pyri sp. nov.

http://zoobank.org/ CB64A90A-6A8F-4DC6-90DC-C40B6DF77D35

Figs 3, 22, 34, 81–83

Type material. Holotype ♂: BRASIL: RO [Rondônia]: Porto Velho. Rio Madeira – Ahe Jirau 9°24’14.60”S, 64°49’58.20”W.Malaise, 17–29.vii.2013. F.A. Fernandes & M.F. Sousa cols. [ MZUSP] . Paratype: 1 ♂, Campo Novo, Fazenda Amorim. 10°40’6”S, 63°29’0”W – 248 m, Malaise trap 6 m, 03–15.xii. 2011, Amorim, Ament & Riccardi cols. [ MNRJ] ( Fig. 3) .

Description. Male. Body length 3.0 mm; wing length 2.8 mm ( Fig. 22).

Female. Unknown.

Color. Frons mat black; fronto-orbital plate and ocellar triangle weakly shining black; upper shining dark orbit touching ovt and ivt; lunule silvery;face greyish-black; clypeus black subshining; gena dark brown; antenna and arista entirely brown; palpus brown; proboscis brownish-yellow; labellum brownish-yellow, with light setae; scutum shining black, with yellow area before scutellum, black intra-alar area of scutum almost reaching scutellum and forming one short band divided by narrow yellow stripe ( Fig. 34); scutellum light yellow; postpronotum light yellow, with small central brownish spot; notopleuron and anepimeron light yellow; anepisternum light yellow, brown in lower part; katepimeron, katepisternum and meron brown; haltere entirely yellow; calypters light brown, yellow at base and with margin and fringe brown; wing infuscate, darker on apical longitudinal third and on dm-cu crossvein; legs brown with fore knees brownish-yellow; pulvilli yellow; abdomen yellow on tergites 1+2 and tergite 3, tergite 4 with central black stripe, tergites 5, 6 and terminalia entirely black.

Head. Frons not visible above eye margin in lateral profile; 2 reclinate ors and 2 inclinate inwards ori, similar in size; orbital setulae erect in one row; facial keel undiferenciated; eye height/ parafacialia+gena: 0.9; ocellar triangle short, ending before second ors; lunule high, 11% of frons length; clypeus rounded; epistoma height 0.03 mm; first flagellomere rounded and finely pubescent; arista long, more than 2/3 of vertical height of eye, short pubescent; vibrissa short and strong, measuring about 1/3 of aristal length.

Thorax. Acr in seven irregular rows; prsc absent; 1+3 dc, increasing in size from presutural; 2 npl, similar in size.Wings. Wing tip between R 4+5 and M; R 4+5 and M slightly recurved; C sections 2–4: 0.69:0.15:0.15; ultimate section of CuA 1 0.58 length of basal section; r-m distal to midpoint of dm, close to limit of apical third. Legs. Fore tibia without pd; mid tibia with 2 pd on middle third.

Terminalia. Epandrium rounded setulose with long setae; cercus long, about 2/3 height of epandrium setulose and with long setae; surstylus rounded, with 6–11 setae; hypandrium U-shaped; phallapodeme about 2.5 length of hypandrium; basiphallus bifid; mesophallus rounded; distiphallus membranous, pear-shaped in dorsal view ( Figs 81, 82); ejaculatory apodeme broad, at its broader part about 6.0 times wider than constricted area at base ( Fig. 83).

Distribution. Rondônia ( Brazil).

Etymology. The specific epithet refers to the pear-shaped distiphallus.

Remarks. Phytobia pyri sp. nov. is similar to P. monsonensis Sasakawa, 1992 , from Peru, in the general coloration of the body, chaetotaxy and the length of the phallapodeme (2.5 mm) in relation to the length of the hypandrium. However, the new species can be differentiated by the length of the body and wing, lunule silver, mid tibiae with two posterodorsal setae on middle third, surstylus with 6–11 setae and the phallus shape with distiphallus membranous and pear-shaped in dorsal view.