Inpauema, Limeira-De-Oliveira & Marques & Reis & Rafael, 2017

Limeira-De-Oliveira, Francisco, Marques, Dayse W. A., Reis, Geniana A. & Rafael, José A., 2017, Inpauema, a new genus of Odiniidae (Diptera) from Brazil, with description of five new species, Zootaxa 4362 (4), pp. 517-534 : 519-521

publication ID 10.11646/zootaxa.4362.4.3

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gen. nov.

Inpauema View in CoL gen. nov.

Type species. Inpauema mirador sp. nov., by present designation.

Gender. Feminine.

Etymology. Named in honor of Instituto Nacional de Pesquisas da Amazônia (INPA) and Universidade Estadual do Maranhão (UEMA), two partner institutions in the studies of insect biodiversity along last decades.

Diagnosis. Predominantly dark brown to black, with well-delimited, silvery-gray pruinose spots on inner margin of eyes, narrow on postcranial margin, longitudinally along middle of lunule and face, on notopleuron and mesopleuron; propleuron light brown pruinose; laterotergite gray pruinose, sparse. Postcranium concave from dorsal view. One pair of stout proclinate ocellar setae. Postocellar setae absent. Frons with 3 fronto-orbital setae: one inclinate anterior seta and two reclinate posterior setae. Lunule shorter than frons. Antennae separated by a maximum distance of 2X diameter of single antennal socket. Gena lacking upturned seta. Scutum with 1+3 dorsocentral setae. Costal vein extending slightly beyond vein R4+5; costal spinules extending to vein R2+3. Gonocoxal apodemes directed upward, not fused or fused posteriorly, forming an arch ( Figs 11 View FIGURES 7–14 , 26 View FIGURES21–26 , 40 View FIGURES 34–45 , 56 View FIGURES 52–56 , 66 View FIGURES63–66 ).

Adults, ♂, ♀. Body length 3.25–5.32 mm.

Head ( Figs 1–3 View FIGURES 1–6 , 15–17 View FIGURES 15–20 , 27–29 View FIGURES 27–33 , 46–48 View FIGURES46–51 , 57–59 View FIGURES57–62 ). Higher than long in lateral view, wider than high in anterior view. Eye slightly higher than long in lateral view. Postcranium concave from dorsal view. One pair of stout proclinate ocellar setae; distance between anterior and posterior ocelli 1.2X the distance between posterior ocelli. Postocellar setae absent. Outer and inner vertical setae stout. Frons 1.4–1.9X wider than long. Frons medially brown to black under certain angle of light incidence, projecting dorsally to lateral side of ocellar triangle; frons with 3 fronto-orbital setae, anterior inclinate and two posterior reclinate; fronto-orbital plate with gray-yellowish to brown pruinosity in frontal view, silvery-gray in ventral view, with few small scattered setulae. Lunule moderately arched, slightly shorter than length of frons. Face concolorous with lunule, with continuous mid-longitudinal gray pruinose stripe through both. Face with deep antennal grooves. Gena lacking upturned setae, with gray-yellowish to brown pruinosity; postgena with dark gray to dark brown pruinosity. Genal groove area (below eye) brown, large, bare (with dark brown spot larger near eye margin in I. gaimarii sp. nov. and I. raimundoluizi sp. nov.). Oral vibrissa moderately stout, with 1–2 additional slightly smaller subvibrissal setae below and 1–2 setae above. Antennae moderately separated, with scape and pedicel brown to black, postpedicel dark yellow to black, arista mainly black yellowish at base (except in I. xavieri sp. nov. arista entirely black; arista lost in I. catarinae sp. nov.); arista distinctly bristled on both sides, rays on ventral basal half longer. Palpus spatulate; predominantly darkened, from dark yellow to black. Proboscis brown to dark brown, with dark setulae.

Thorax ( Figs 4, 1 View FIGURES 1–6 , 30 View FIGURES 27–33 , 49 View FIGURES46–51 , 60 View FIGURES57–62 ). Chaetotaxy: 1 propleural, 1 stout postpronotal with several additional setulae, acrostichal multiseriated, small, subequal in size or with posterior setula slightly stouter, reaching level or just past level of stout posterior pair of dorsocentral setae, 1+3 dorsocentrals, 1+1 intra-alar, 1 supra-alar postsutural, 2 postalars (anterior stouter), 2 scutellars, 2 notopleurals and 3 katepisternals along dorsal edge. Mesonotum dark brown to black dorsally, with variable intensity of gray pruinosity according to angle of light incidence. Postpronotal lobe with dark brown pruinosity reaching level of stouter seta, remaining gray pruinose, variable according to angle of light incidence. Scutellum concolorous with adjacent scutum, arched, scutellar disc bare. Propleuron brown, with light brown pruinosity less dense than on adjacent mesopleural sclerites, remaining mesopleural sclerites densely silvery-gray pruinose, but laterotergite gray pruinose, sparse. Notopleuron subshiny posteriorly, on the edge.

Wing ( Figs 5 View FIGURES 1–6 , 19 View FIGURES 15–20 , 31 View FIGURES 27–33 , 50 View FIGURES46–51 , 61 View FIGURES57–62 ). Hyaline or slightly brown infuscated along anterior (costal) half (brown infuscated only on cell c and beginning of cell r 1 in I. mirador sp. nov.). Extreme base light yellow, vein C extending just past vein R4+5; costal spinules extending just past vein R2+3; vein M1 distinctly reaching wing margin. Halter light yellow. Legs. Predominantly brown to dark brown, with femuro-tibial and tibio-tarsal articulation somewhat yellow, setae black. Midtibia with one stout apical spur.

Abdomen ( Figs 6 View FIGURES 1–6 , 20 View FIGURES 15–20 , 33 View FIGURES 27–33 , 51 View FIGURES46–51 , 62 View FIGURES57–62 ). Dark brown to black with lateral silvery gray pruinosity on tergites 1 and 5 and triangular silvery gray pruinosity posterolaterally on tergites 2–4. Tergite 6 narrow; syntergosternite 7+8 symmetrical, bare, more sclerotized anteriorly (on tergite 7) and somewhat weakly sclerotized posteriorly (on tergite 8), only laterally separated. Sternite 1 wider than remaining sternites, without setulae, sternites 2–5 with black stouter setulae along posterior edge. Sternite 6 asymmetrical, thin, sclerotized band present on left side, fused to syntergosternite 7+8 laterally, bare; spiracle six and seven close together, on left side of syntergosternite 7+8.

Male genitalia ( Figs 7–12 View FIGURES 7–14 , 21–26 View FIGURES21–26 , 34–40 View FIGURES 34–45 , 52–56 View FIGURES 52–56 , 63–66 View FIGURES63–66 ). Epandrium with anterior edge directed downward to connect with hypandrium almost ventrally, encompassing the upwardly directed gonocoxal apodeme. Surstylus absent. Cercus well developed, setose. Subepandrial membrane, when distinctly sclerotized, articulated with gonocoxal apodeme. Hypandrium projected anteriorly, concave in dorsal view, extending laterally around phallapodeme; gonocoxal apodemes well developed, not fused or fused posteriorly, forming an arch when seen from posterior view, bearing setulae laterally. Pregonite somewhat fused to hypandrium, somewhat stout (gonocoxal apodeme + pregonite with an open snake mouth appearance in lateral view; with a mesial keel-shaped protuberance with inconspicuous tiny setae; postgonite as a small distal lobe, sometimes inconspicuous (= articulated lobe of gonopod sensu Gaimari 2007), with inconspicuous setae and separated from the apex of pregonite. Ejaculatory apodeme absent. Basiphallus with elongated rod-like phallapodeme, the latter longer than hypandrium; distiphallus labelliform, with the halves somewhat fused.

Female genitalia ( Figs 13–14 View FIGURES 7–14 , 41–45 View FIGURES 34–45 ). Description based on two species ( I. mirador sp. nov. and I. gaimarii sp. nov.). Tergite 6 the same color of abdomen; large and strongly convex, saddle-shaped, extending laterally around to venter. Tergite 6 with inverted triangle of setae on posterior margin. Sternite 6 with long setae along posterior margin and sparse scattered setulae in middle. Tergite 7 light brown to brown; anterior fourth sclerotized, ring-like, bare; posterior ¾ not sclerotized. Sternite 7 small, with 7th spiracle embedded in cuticle anterolaterally. Segment 8 about 4X longer than wide. Epiproct and hypoproct small, plate-like. Cerci brown setulose, separated, elongated and thin. With 2 brown, mushroom-like spermathecae ( Figs 43, 45 View FIGURES 34–45 ).

Discussion. Inpauema gen. nov. is similar to Shewellia Hennig and Helgreelia by lacking genal seta, costal vein extended to vein R4+5 or slightly beyond; postocellar seta absent and postcranium concave from dorsal view. Inpauema gen. nov. differs from Shewellia by having only one anterior fronto-orbital seta inclinate (several anterior fronto-orbital seta inclinate in Shewellia ); scutellar disc bare (scutellar disc setulose in Shewellia ). Inpauema gen. nov. differs from Helgreelia by having face and lunule dark brown with gray pruinose stripe through both (face uniformly yellow, lacking mid-longitudinal stripe in Helgreelia ); antennae separated by at most 2X the diameter of a single antennal socket (antennae separated by a distance greater than 3X diameter of single antennal socket in Helgreelia ); vein M1 distinctly reaching wing margin (M1 vein evanescent after crossvein dm-cu in Helgreelia ); gonocoxal apodemes well developed, directed upward, forming an arch (gonocoxal apodemes short, not forming an arch in Helgrellia); distiphallus labelliform, with the halves somewhat fused, not distinctly separated in ventral view (distiphallus not labelliform, with distict left and right halves in Helgrellia).











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