Paracalamoncosis brasiliensis, Riccardi & Bazyar & Lamas, 2018

Riccardi, Paula Raile, Bazyar, Zeinab & Lamas, Carlos Einicker, 2018, New genus of the subfamily Oscinellinae from Brazil (Diptera: Chloropidae), Zootaxa 4438 (2), pp. 394-400 : 395-399

Paracalamoncosis brasiliensis . sp. nov.

( Figs 1–10 )

Examined material. Holotype 1 ♂ Brazil, Mato Grosso do Sul, Porto Murtinho, Fazenda Retiro Conceição; S21°41’52.0”, W57°45’57.1”; Malaise 33 ; 1.vii–15.viii.2012; Lamas, Nihei & eq. col. [MZUSP]. Paratypes 26 specimens: 15 ♂ same data as holotype ; 7 ♂ and 1 ♀ same data as holotype, except 15.vi–1.vii.2012 [ MZUSP] ; 1 ♂ and 1 ♀ same data as holotype, except 25.i–29.iii.2012 [ BMNH] ; 1 ♂ same data as holotype, except S21°40’59.7”, W57°46’42.5”, Malaise 31, 26.xii.2011 – 10.i.2012 [ USNM].

Diagnosis. Yellow species with black scutellar markings; scutellum elongated, triangular shaped, with six pairs of apical setae arising from small tubercles.

Description. Male. Body length, 1.6–2.1 mm, wing length, 1.4–2.3 mm.

Head ( Figs 1–3 ). Twice broader than deep dorsally and deeper than long laterally; entirely yellow except for dark ocellar triangle; setae black; ocellar setae reclinated and parallel, shorter than postocellar seta; about ten developed orbital setae, same size as frontal setulae; outer vertical seta strongly developed, slightly longer than inner vertical seta; frons broader than long, apical margin slightly concave, yellow with many short brown setulae, slightly dusted; ocellar triangle pilose, small, extending to half length of frons, posteriorly two third width of frons, lateral margins straight, brown pruinose; postocellar setae lost in holotype, but convergent and upright in paratypes; outer vertical seta upright and directed slightly laterally; inner vertical seta incurved and upright; eye oval, long axis slightly oblique with dense short pubescence; face broader than deep; a narrow triangular complete carina between antennae; antennae yellow, first flagellomere round, as deep as long; arista with short black pubescence, 2 times as long as first flagellomere; gena narrow, half length of first flagellomere, yellow, with whitish setulae on ventral margin, four strong setae at the anterior margin, directed anteriorly; occiput brown, with faint brown lines at level of posterior corner of ocellar triangle, and postocular setulae alongside; proboscis yellow, narrow, short with white setulae; palpus yellow, slightly longer than antenna, and curved upwards, with brown setulae; clypeus yellow. Thorax ( Figs. 1, 4 ). Scutum about as long as broad, yellow, slightly pollinose with black thoracic setae; all stripes black; central stripe black divided longitudinally; inner lateral stripe as long as central one; outer lateral stripe less than half length central stripe; one posterior dorsocentral seta, shorter than outer vertical seta, no acrostical seta; postpronotal lobe yellow with long seta equal to inner vertical; notopleuron with 1+2 setae; anterior post-alar and posterior post-alar as long as dorsocentral seta; two pairs of setulae along the posterior margin of scutum; pleura yellow with a large black spot on katepisternum and meron, entirely shining; a few setulae on dorsal margin of anepisternum and katepisternum; scutellum yellow with darkened apex, elongated triangular shaped, almost half length of scutum, with few black setulae on disc; apical scutellar setae with separation slightly closer than the distance of posterior ocelli, short and inserted on small tubercle; five pairs of lateral setae developed inserted on small tubercles; post-scutellum black, shining; halter pale yellow. Wing ( Fig. 5 ). Hyaline with brown veins covered in sparse brown microtrichia; costal ratios measured from humeral vein to point where R1 touches costa, then R2+3, then R4+5, then M1+2: 0.42: 0.55: 0.27: 0.07 mm; cell r1 narrower than cell r2+3, veins R4+5 and M1+2 almost parallel, up to costal wing margin, where they diverge very slightly; distance between r-m and dm-cu twice dm-cu length; anal lobe well developed. Legs ( Figs. 1a, 6 ). Mainly yellow, shining; femora slightly wider than tibia; posterior tibial organ pale yellow, narrow, occupying slightly more than middle tibia; femoral organ on mid femur, brown with a slightly irregular row of tiny spines, placed on basal third length of femur. Abdomen ( Fig. 1b ). Yellow, shining with black setulae; tergites 1+2 pale yellow with a pair of brown lateroapically spots; remaining tergites brown basally, becoming lighter at apex; underside yellow. Male terminalia ( Figs. 7–8 ). Remnant of sternite 6 microtrichose, with a pair of setae, semi-circular, sac-like; epandrium broader than deep, surstylus long rectangular with rounded apical margin, crossing the mid-line; cercus long, with quadrate apex, bearing an upright long apical seta and several short more basal setae. Hypandrium closed, apically forming an arch; basiphallus rectangular; distiphallus short and membranous; pre- and postgonites fused, inner margin serrate, with few sensilla; phalapodem short; sperm pump present, straight and clubbing shape.

Female ( Figs. 9–10 ). Same as male except about the eyes with less densely pilose; swollen palpus; and shorter proboscis; segments 6–8 of abdomen narrow; epiproct bare, with a pair of setae; hypoproct pilose with a pair of setae apically; cercus brown apically, long and narrow.

Etymology. The specific epithet “ brasiliensis ” is derived from the country where the specimens were collected.

Figures

FIGURES 1–6. Paracalamoncosis brasiliensis gen. nov. et sp. nov. external morphology (paratypes). 1a, lateral view. 1b, dorsal view. 2, head in frontal view. 3, head in dorsal view. 4, sCutellum in dorsal view. 5, wing. 6, femoral organ. SCale bar 1 mm.

FIGURES 7–10. Paracalamoncosis brasiliensis gen. nov. et sp. nov. postabdomen. 7, male terminalia in posterior view (holotype). 8, male terminalia in ventral view (holotype). 9, female terminalia, dorsal view (paratype). 10, female terminalia, ventral view (paratype). SCale bar 0.1 mm.