Macrostomus nigriventris (Macquart)

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: 50-51

publication ID 10.5281/zenodo.281632

persistent identifier

treatment provided by


scientific name

Macrostomus nigriventris (Macquart)


Macrostomus nigriventris (Macquart) 

( Figs. 26–31View FIGURES 26 – 31)

Rhamphomyia nigriventris Macquart, 1846: 224  ; Bezzi, 1905: 457 (citation); Bezzi, 1909: 322 (keyed); Melander, 1928: 199 (geographical distribution).

Macrostomus nigriventris: Collin, 1933: 210  ; Smith, 1961: 53; 1962: 242 (description transcription); 1967: 30 (catalogue); Rafael, 2001: 45 (citation); Rafael & Cumming, 2004: 446 (citation); Yang et al., 2007: 145 (catalogue).

Diagnosis. Postgenal and antepronotal setae weaker than dorsal thoracic setae. Tergite 8 with wide median projection at distal margin. Hypandrium distinctly wider at apex.

Re-description. Holotype male. Body length 3.4 mm; wing length 4.1 mm. The type of M. nigriventris  was not located by Rafael (2001). Fortunately it was found in the Hope Entomological Collections of the University Museum in Oxford ( OUMNH). The original description was transcribed by Smith (1962) and is useful. The wing and the terminalia are intact and it is now possible to add the following characters: posterior leg with coxa, trochanter and femur yellow, except apex of femur light brown; tibia light brown with extreme base yellow; tarsus yellow; tibia ( Fig. 26View FIGURES 26 – 31) with six slender dorsal setae; tarsomere 1 with 1 longer dorsal seta at middle and short spinelike setae ventrally. Wing ( Fig. 27View FIGURES 26 – 31) hyaline, light brown infuscated at costal and distal margins with pterostigma darker; cell dm somewhat truncate; veins M 1, M 2 and A 1 evanescent. Halter lost. Abdomen shining black after dissection. Sternites concolorous with tergites. Terminalia black. Tergite 8 ( Fig. 29View FIGURES 26 – 31) with somewhat wide projection inside median distal sulcus. Epandrium ( Fig. 30View FIGURES 26 – 31) with anterodorsal and posterodorsal lobes of same height with somewhat deep sinus. Anterior cercus very large with dorsal sinus; posterior cercus elongate, bifid; median lobe ( Figs. 28, 30View FIGURES 26 – 31) with long setae. Hypandrium ( Fig. 31View FIGURES 26 – 31) with 6 slender setae along posterior margin (broken on dissected piece), with wider apex. Ejaculatory apodeme with short lateral lamella.

Female. Unknown.

Geographical distribution. Brazil (Minas Gerais).

Type Material. HOLOTYPE ɗ: “ Rhamphomyia nigriventris Macq.  Male, n. sp., Brasil, Minas Gerais, Macq. D. 9 r. Nvn” (sic) [handwritten white rectangular label, black bordered] // “ Holotype ” [printed rounded label red bordered] // “ R. nigriventris  ex Coll. Bigot” [printed rectangular white label] ( OUMNH).

Holotype condition. Pinned specimen in poor condition. Body covered with a secretion (?glue). Right anterior leg with no tarsus. Left anterior leg lost. Left mid tibia glued to the pin, tarsus mounted on microslide. Right mid leg (except coxa) and posterior legs (except coxae) mounted on microslide. Wings mounted on microslide; mounted right wing with basal third lost; left wing ( Fig. 27View FIGURES 26 – 31) almost entire. Abdomen in good condition, in microvial with glycerin. Microslide and microvial on pin with specimen.














Macrostomus nigriventris (Macquart)

Rafael, José Albertino & Cumming, Jeffrey M. 2012

Macrostomus nigriventris:

Yang 2007: 145
Rafael 2004: 446
Rafael 2001: 45
Smith 1961: 53
Collin 1933: 210

Rhamphomyia nigriventris

Melander 1928: 199
Bezzi 1909: 322
Bezzi 1905: 457
Macquart 1846: 224