Macrostomus inflatus, Rafael, José Albertino & Cumming, Jeffrey M., 2012

Rafael, José Albertino & Cumming, Jeffrey M., 2012, Revision of the genus Macrostomus Wiedemann (Diptera, Empididae, Empidinae). III. The limbipennis species-group, Zootaxa 3361, pp. 45-55 : 47-48

publication ID

https://doi.org/ 10.5281/zenodo.281632

DOI

https://doi.org/10.5281/zenodo.6179138

persistent identifier

https://treatment.plazi.org/id/03E59A56-FF93-FF87-FF7B-FF1066E5ACCA

treatment provided by

Plazi

scientific name

Macrostomus inflatus
status

sp. nov.

Macrostomus inflatus , sp. nov.

( Figs. 1–11 View FIGURES 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 View FIGURES 1 – 11 ) with 1 anterodorsal, 1 posterodorsal near middle, 2–3 ventral along distal half; hind femur ( Fig. 3 View FIGURES 1 – 11 ) with 1 anteroventral at distal third; hind tibia ( Fig. 3 View FIGURES 1 – 11 ) with 3–4 slender dorsal setae. Hind tarsomere 1 with one longer dorsal seta. Fore tarsus ( Fig. 1 View FIGURES 1 – 11 ) unicolorous with tarsomere 1, swollen dorsally. Wing ( Fig. 4 View FIGURES 1 – 11 ) 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 View FIGURES 1 – 11 ) with distal sinus. Epandrium ( Fig. 6 View FIGURES 1 – 11 ) 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 View FIGURES 1 – 11 ) 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 View FIGURES 1 – 11 ) with distinct distal sulcus. Sternite 8 ( Figs. 8, 10 View FIGURES 1 – 11 ) highly modified, with distinct sulcus ventrally and laterally. Genital fork ( Fig. 11 View FIGURES 1 – 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.

INPA

Instituto Nacional de Pesquisas da Amazonia

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Empididae

Genus

Macrostomus

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