Macrostomus limbipennis (Bezzi)

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: 48-50

publication ID 10.5281/zenodo.281632

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Macrostomus limbipennis (Bezzi)


Macrostomus limbipennis (Bezzi) 

( Figs. 12–25View FIGURES 12 – 19View FIGURES 20 – 25)

Rhamphomyia limbipennis Bezzi, 1909: 329  .

Rhamphomyia (Lundstromiella) limbipennis  ; Melander, 1928: 183.

Macrostomus limbipennis  ; Collin, 1933: 210; Smith, 1961: 54; 1967: 30 (catalogue); Rafael & Cumming, 2004: 446 (citation); Yang et al., 2007: 145 (catalogue).

Diagnosis. Postgenal and antepronotal setae as strong as dorsal thoracic setae. Tergite 8 fused with sternite 8, humped with microspinulose lateral expansion. Hypandrium somewhat narrow at apex, subequal in diameter along its length.

Re-description. Lectotype male, designated below. Head and thorax redescription, except legs, based on Peruvian Amazonian conspecific specimens with the examined lectotype. Body length 3.8 mm; wing length 3.8 mm. Male frons shining black, as large as anterior ocellus width. Face less shining black, as wide as frons, slightly gray pruinose at apex. Ocellar tubercle slightly protuberant with 2 pairs of ocellar setae, posterior pair minute. Postcranium black, gray pruinose with slender setae, except for 3 postgenal setae as strong as dorsal thoracic setae. Antenna velvety black with pedicel yellowish. Flagellum with three flagellomeres. Proboscis yellow, brown at base. Palpus brown with 2 longer ventral and 1 longer distal setae. Thorax shining black, gray pruinose, with prosternum yellow, propleura, postpronotal and postalar lobes partially yellow. Thoracic setae: 3–4 antepronotals as strong as adjacent thoracic setae; 2–3 proepisternals with one stronger; 8–10 katatergitals with anterior row longer; other setae as described for limbipennis  species-group (diagnosed above). Legs shining predominantly yellow with distal half of hind femur, distal fourth of fore tibia, distal three-fourths of mid tibia, entire hind tibia black; all tarsi black with fore tarsomeres 1–4 white distally and tarsomere 2 white banded medially. Femora/tibiae setae slightly stronger: fore tibia ( Fig. 12View FIGURES 12 – 19) with 2 anterodorsals along basal third, 2 posterior setae with one near middle and one along distal third (sometimes some setae absent); mid femur ( Fig. 13View FIGURES 12 – 19) with 1 stronger anterior near apex; mid tibia with 2 anterodorsals, 2 posterior along basal half, 1 anteroventral at middle of distal half, 1 posteroventral seta near middle; hind femur ( Fig. 14View FIGURES 12 – 19) with 2 anterior setae with one at basal fifth and one at distal fifth, 2 anteroventral along median third with distal strongest; hind tibia with 5–6 slender dorsal setae. Hind tarsomere 1 with one longer dorsal seta and short spine-like setae ventrally. Wing ( Figs. 15, 16View FIGURES 12 – 19) brown infuscated along costal and distal margin. Cell dm somewhat acute. Veins M 1, M 2 and A 1 distinct. Halter yellowish with knob whitish. Abdomen and terminalia redescription based on lectotype. Abdomen shining black with gray pruinescence on terminalia. Tergite 8 fused with sternite 8 ( Fig. 18View FIGURES 12 – 19), humped with microspinulose lateral expansion ( Figs. 17, 18View FIGURES 12 – 19). Epandrium ( Fig. 18View FIGURES 12 – 19) with anterodorsal and posterodorsal lobes of same height. Anterior cercus somewhat small, narrower ventrally; posterior cercus widened distally; median lobe membranous with long setae. Internal arm of bacilliform sclerite very developed with strong setae distally. Hypandrium ( Fig. 19View FIGURES 12 – 19) with setae placed medially, distal pair longer; apex somewhat narrow, subequal in diameter along its length; subapically with paired membranous expansion, anterior distal margin more sclerotized and projected over apex. Ejaculatory apodeme with short dorsal lamella.

Female. Frons and face wider than anterior ocellus width and wider than in male. Cell r 1 entirely brown infuscated ( Fig. 20View FIGURES 20 – 25). Fore tarsi unicolorous. Tergite 8 ( Figs. 21, 22View FIGURES 20 – 25) widened laterally, with distinct sulcus distally. Sternite 8 ( Figs. 22, 23View FIGURES 20 – 25) divided. Genital fork small with apex slightly wider ( Fig. 24View FIGURES 20 – 25). Genital chamber highly sclerotized ( Figs. 22, 24View FIGURES 20 – 25). Spermathecal duct elongated, widened medially and with spherical spotted receptacle distally ( Fig. 25View FIGURES 20 – 25).

Geographical distribution. Peru, Bolivia, Ecuador, Brazil (Amazonas, Acre).

Type Material. LECTOTYPE ɗ, here designated: “ PERU [Pasco], Pichis, Puerto Bermudez, 10.xii. 1903, [300m.]” ( SMTD). PARALECTOTYPES: same data as lectotype (1 Ψ, SMTD, poor condition); 08.xii. 1903 (1 specimen SMTD, in poor condition); 11.xii. 1903 (1 specimen SMTD, in poor condition).

Additional material. PERU, Cuzco, Quincemil, 13–31.viii. 1962, L. Pena, 780 m (30 ɗ, 11 Ψ, CNC; 5 ɗ, 1 Ψ, INPA); Quincemil, 27–31.viii. 1962, 740 m (5 ɗ, CNC); Quincemil, viii. 1962 (5 ɗ, CNC); Quincemil, 10–20.ix. 1962, 400 m (1 ɗ, 2 Ψ, CNC); Quincemil, 15–30.x. 1962, 700 m (14 ɗ, 5 Ψ, CNC); Quincemil, 01– 15.xi. 1962, 700 m (41 ɗ, 23 Ψ, CNC; 7 ɗ, 7 Ψ, INPA); Huanuco, Tingo Maria, 14.x. 1940, 2200 ft, J.C. Pallister coll., Donor Frank Johnson (1 Ψ, AMNH); Tingo Maria, Monson Valley, 21.x. 1954, E.I. Schlinger & E.S. Ross, Collection CAS, San Francisco (1 ɗ, CAS); Yurao, 67 mi. E. of Tingo Maria, 16.xi. 1954 (1 specimen CAS, without abdomen); ECUADOR, Loja, W. Zamora, 1200 m, xi. 1970, L.E. Pena (2 ɗ, MZSP). BRAZIL, Amazonas, Juruá, Minervazinho, 13–21.i. 1996, P. Bührnheim & N.O. Aguiar, Malaise (1 Ψ, INPA); Acre, Cruzeiro do Sul, Rio Moa, 0 7 ° 37 '02''S – 72 ° 46 ' 15 ''W, 19–28.xi. 1996, J.A. Rafael, J. Vidal & R.L. Menezes, varredura, mata (1 ɗ, INPA).

Lectotype condition. Left flagellum lost; right wing mounted on microslide and abdomen in microvial with glycerin.

Variation. One specimen from Brazil (Acre, Cruzeiro do Sul) with legs predominantly black.


Canadian National Collection of Insects, Arachnids, and Nematodes


Instituto Nacional de Pesquisas da Amazonia


American Museum of Natural History


California Academy of Sciences


Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo














Macrostomus limbipennis (Bezzi)

Rafael, José Albertino & Cumming, Jeffrey M. 2012

Macrostomus limbipennis

Yang 2007: 145
Rafael 2004: 446
Smith 1961: 54
Collin 1933: 210

Rhamphomyia (Lundstromiella) limbipennis

Melander 1928: 183

Rhamphomyia limbipennis

Bezzi 1909: 329