Macrostomus inflatus Rafael & Cumming, 2012, sp. nov.
Creators: name: Rafael, José Albertino
name: Cumming, Jeffrey M.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Empididae
Macrostomus
Macrostomus inflatus

description: Macrostomus inflatus, sp. nov.
(Figs. 1–11)
Diagnosis. Fore tarsomere 1 of male swollen dorsally. Wing entirely hyaline with inconspicuous pterostigma.
Description. Holotype male, previously preserved in alcohol; specimen somewhat discolored by alcohol action. Body length 2.6 mm; wing length 3.9 mm. Frons shining black, wider than anterior ocellus width. Face slightly narrower than frons, approximately as wide as anterior ocellus width. Ocellar tubercle slightly protuberant with 1 pair of ocellar setae. Postcranium black, gray pruinose. Antenna yellow, flagellum with one flagellomere.
Proboscis yellow. Palpus yellowish. Thorax shining black, gray pruinose; postpronotal and postalar lobes slightly yellow. Thoracic setae: 2 antepronotals; 1–3 minute proepisternals; 5–7 katatergitals; other setae as described for limbipennis species-group (diagnosed above). Legs shining yellow with mid and hind coxae, hind tibia and all tarsi slightly darker. Femora/tibiae setae slightly stronger: mid tibia (Fig. 2) with 1 anterodorsal, 1 posterodorsal near middle, 2–3 ventral along distal half; hind femur (Fig. 3) with 1 anteroventral at distal third; hind tibia (Fig. 3) with 3–4 slender dorsal setae. Hind tarsomere 1 with one longer dorsal seta. Fore tarsus (Fig. 1) unicolorous with tarsomere 1, swollen dorsally. Wing (Fig. 4) entirely hyaline with inconspicuous pterostigma. Cell dm truncate. Veins M1, M2 and A1 evanescent. Halter white. Abdomen shining black, more gray pruinose on terminalia. Sternites 1–2 slightly yellow. Tergite 8 (Fig. 5) with distal sinus. Epandrium (Fig. 6) with anterodorsal and posterodorsal lobes of same height with shallow sinus. Anterior cercus very large with internal sinus; posterior cercus somewhat short; median lobe membranous with long setae. Hypandrium (Fig. 7) with setae medially and apex somewhat simple. Ejaculatory apodeme with short dorsal lamella.
Female. Body length not measured; wing length 2.4 mm. Frons and face as in male. Fore tarsomere 1 not swollen. Hind femur without anteroventral setae. Hind tibia with 3 dorsal setae. Tergite 8 (Figs. 8, 9) with distinct distal sulcus. Sternite 8 (Figs. 8, 10) highly modified, with distinct sulcus ventrally and laterally. Genital fork (Fig. 11) small with apex short U–shaped. Genital chamber membranous.
Geographical distribution. Brazil (Distrito Federal).
Type Material. HOLOTYPE ɗ: “ BRASIL, DF [Distrito Federal], Brasília, Res[erva] Biol[ógica] [do] IBGE, Brejoi (sic, = Brejo) Taquara [15 ° 57'21.93''S – 47 ° 53'18.32''W], iv.1981, B.F.S. Dias et al. Cols.” // “ Macrostomus inflatus Holótipo ɗ” (INPA). PARATYPES. Same data as holotype, v.1981 (1Ψ, INPA); 18–25.iii.1982 (1ɗ, INPA, body entirely in microvial with glycerin).
Holotype condition. Pinned (previously preserved in alcohol), in good condition.
Etymology. From Latin inflatus = swollen, in reference to the swollen shape of the male fore first tarsomere.
description: Published as part of Rafael, José Albertino & Cumming, Jeffrey M., 2012, Revision of the genus Macrostomus Wiedemann (Diptera, Empididae, Empidinae). III. The limbipennis species-group, pp. 45-55 in Zootaxa 3361 on pages 47-48, DOI: 10.5281/zenodo.281632