Japanagromyza arcuaria, Sousa & Couri, 2017

Sousa, Viviane R. de & Couri, Márcia S., 2017, Two new Japanagromyza Sasakawa (Diptera: Agromyzidae) from Brazil, Iheringia, Série Zoologia (e 2017032) 107, pp. 1-5 : 2

Japanagromyza arcuaria sp. nov.

( Figs 1-8 )

LSID: urn:lsid:zoobank.org:act:0C254B13-7055-42E7-BC9D-25B418B040D1

Type material. Holotype ♂, BRASIL, RO [Rondônia], Campo Novo (Fazenda Amorim 10°40’06”S, 63°29’00”W - 248m), Malaise trap – 6 m, holotype and 1♀, 03-15.xii.2011, Amorim, Ament & Riccardi cols. ( MZUSP); BRASIL, MS [Mato Grosso do Sul], Corguinho, Taboco ( Reserva Quinta do Sol 19°46’45.4”S, 55°14’36.2”W), Malaise 13, 3♀, 12-29. viii.2012, Lamas, Nihei & eq. cols ( MNRJ); (19°46’40.8”S 55°14’59.0”W), Malaise 12, ♀, 12-29.ix.2012, Lamas, Nihei & eq. cols, ( MZUSP); CorumbÁ (B.E.P. Paratudal 19°34’11.04”S 57°01’08.5”W), Malaise 01, ♀, 29.x-14. xi.2012, Lamas Nihei & eq. cols. ( MZUSP).

Etymology. The specific epithet refers to the presence of a sclerotized arc before the apex of the distiphallus.

Measurements. Male. Body length: 2.0 mm; wing length: 1.5 mm ( Fig. 1 ). Female Body length: 2.1 mm; wing length: 1.7 mm ( Fig. 2 ).

Color. Frons mat black, slightly reddish brown on basal half; the basal reddish brown occupies about 1/3 of the frons; fronto-orbital plate and ocellar triangle shining black; upper shining dark orbit touching the outer vertical and inner vertical setae; lunule and face grey yellowish; clypeus slightly shiny brownish yellow; gena orange; antenna entirely brownish yellow; arista brown; palpus brown, with black setae apically; proboscis yellow; labellum yellow, with yellow setae; scutum and scutellum shining dark brown; postpronotum light yellow, with a median brown spot; notopleuron light yellow; anepimeron, anepisternum, katepimeron, katepisternum and meron dark brown; suture between anepisternum and anepimeron light yellow; haltere entirely pale yellow; calypter pale yellow, with margin and fringe black; wing clear, light yellow at base; legs yellow, except tip of mid and hind coxae, mid and hind tibiae and tarsi brown; pulvilli yellow; tergites 1+2 entirely yellow, tergite 3 yellow with a brown spot centrally, tergite 4 yellow with a brown spot centrally and two spot laterally, tergite 5, tergite 6 and terminalia entirely brown.

Head. Frons slightly visible above the eye margin in lateral profile; 2 reclinate ori and 2 reclinate ors, both very strong, the ori a little smaller; interfrontal hairs absent; orbital setulae erect in one row; eye bare; facial kell not differentiated; eye height/parafacialia+gena: 4; ocellar triangle long, reaching the second ori insertion level; ocellar setae long, parallel and directed forward; inner vertical setae long and strong; outer vertical setae strong and outwards directed; lunule high and straight, about 20% of frons length; clypeus narrow; epistoma high 0.03 mm; first flagellomere rounded and finely pubescent; arista long, finely pubescent, almost the same length of the vertical height of eye; vibrissa long and strong measuring 2/3 of the aristal length; one row of long and strong peristomals.

Thorax. Acrostichals in eight irregular rows; propleural present; prescutellar present; 0+2 dorsocentrals, strong and similar in size; 1 presutural setae; 1 intra-alar; 1 supra-alar; 2 post-alars; 1 postpronotal; posthumeral absent; 2 notopelurals, similar in size; 2 long and strong pairs of scutellar setae, 1 sub-basal and 1 apical; katepisternum with small and fine setae and 1 long and strong posterior seta.

Wing. Subcostal vein joining R 1 before reaching Costal and the distal margin of R 1 sinuous nearer junction; Costal extending to M 1; wing tip near to R 4+5; Costal sections 2-4: 0.66: 0.13: 0.2; R 4+5 straight and M 1 slightly recurved; ultimate section of CuA 1 0.7 the length of basal section; r-m at midpoint of dm.

Legs. Fore tibia without posterodorsal seta, with one ventral apical seta; mid tibia with two posterodorsal setae on middle third and one apical ventral seta.

Male terminalia. Epandrium rounded with long setae ( Fig. 3 ); cercus long with long setae; postgonite absent; surstylus triangular with about 32 spines; distiphallus with a sclerotized arc before apex ( Figs 4, 5 ); ejaculatory apodeme short, at its larger part about 3.6 times wider than the constricted area at base ( Fig. 6 ).

Oviscape: ( Fig. 7 ); spermathecae ( Fig. 8 ).

Distribution. States of Rondônia and Mato Grosso do Sul ( Brazil).

Remarks. This new species runs to Japanagromyza spadix (Spencer, 1963) in the key ( SOUSA & COURI, 2014), but is differentiated by the male terminalia morphology.Also is similar to Japanagromyza chapadensis sp. nov. in the wing length and the dark brown coloration of the body, but can be differentiated by the lunule and face grey yellowish, gena orange, antenna entirely brownish yellow, surstylus triangular with about 32 spines, distiphallus with a well sclerotized arc before apex and ejaculatory apodeme short.

Figures

Figs 1-8. Japanagromyza arcuaria sp. nov.: 1, adult male, lateral view; 2, adult female, lateral view; 3, epandrium; phallus: 4, lateral view; 5, ventral view; 6, ejaculatory apodeme; 7, oviscape; 8, spermathecae.