Laneella nigripes Guimarães, 1977, Guimaraes, 1977

Whitworth, Terry L. & Yusseff-Vanegas, Sohath, 2019, A revision of the genera and species of the Neotropical family Mesembrinellidae (Diptera: Oestroidea), Zootaxa 4659 (1), pp. 1-146: 33-39

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Laneella nigripes Guimarães, 1977


Laneella nigripes Guimarães, 1977  

( Figs 19–20 View FIGURES 15–20 , 109–110 View FIGURES 105–114 , 197 View FIGURES 195–201 , 241 View FIGURES 239–251 , 284 View FIGURES 282–287 , 328 View FIGURES 326–349 , 372 View FIGURES 370–400 , 413 View FIGURES 411–423 , 488 View FIGURE 488 )

Laneella nigripes Guimar   „es, 1977: 57. Holotype male (MZSP), not examined. Type locality: Salesópolis, S„o Paulo, Brazil.

Laneella nigripes   : Vargas & Wood (2009: 1301); Wolff et al. (2013a: 59); Kosmann et al. (2013); Marinho et al. (2017: tab. 1).

Mesembrinella nigripes: Cerretti et al. (2017   : tab. 2).

Diagnosis. A medium-sized shiny dark brown fly averaging 10.7 mm (10–11/3) in length. Black postocular setae only extending 2/3 of way to gena vs. black postocular setae extending all the way to gena in L. perisi   ; palpus slen- der, dark brown to black vs. orange in L. perisi   ; fore and mid trochanters and femora dark brown (hind ones sometimes yellow) vs. trochanter and femora yellow in L. perisi   ; basal half of tarsal claw white in both L. nigripes   and L. perisi   ( Fig. 10 View FIGURES 9–14 ), darkened orange, brown or black in other Laneella   ( Fig. 11 View FIGURES 9–14 ); wing with distinct infuscation along the length of the costa, vs. only distal end of wing infuscated in L. perisi   ; T4 with whitish tomentum on anterior half vs. with four large spots of whitish tomentum midsegment in L. perisi   .

Redescription. Male. Head. Frons narrow, 0.015/1 of head width at narrowest; fronto-orbital and parafacial pale orange with heavy silvery tomentum; frontal setae ascending about halfway to vertex; frontal vitta dull orange with pale tomentum, obliterated about midway; gena yellowish, anterior half with dark setae, rear half with pale setae; postgena yellowish with pale setae; occiput with pale tomentum and yellow-gold setae, median occipital sclerite shiny dark orange; antenna: pedicel, first flagellomere, and arista dark orange; eye with median facets about 4x size of lateral facets; ocellar triangle tiny, anterior ocellus about 1.5x size of posterior ocelli; supravibrissal setae brown, in cluster at base of facial ridge, like in L. perisi   .

Thorax with dorsum and pleural areas orange-brown; dorsum with four whitish tomentose stripes. Chaetotaxy: ac 2:3, dc 2:3, ia 1, ph 1, ppn 3x 3, kat 2:1, meral setae long, slender and tan; 1 pair converging ap, sa absent, 1 lat, 1 stout bas, 1 weak pb, 1 disc; subscutellum weakly developed; spiracles pale yellow, medium in size. Legs. Trochanters and femora dark brown (sometimes yellowish on hind leg), vs. yellow in L. perisi   . Wing infuscated along anterior edge of costa, from subcosta-costa junction posteriorly to R 4+5 and distally to wing tip; subcostal sclerite bare, basicosta orange, tegula brown; section IV 0.26 of section III; discs of calypters tan; rim of upper calypter brown with short dark setae, rim of lower calypter pale with long pale setae.

Abdomen. T1+2 with anterior half yellow-orange, posterior half brown; T3 with anterior half yellow, posterior half brown; T4 with solid band of pale tomentum along anterior half; T4 and T5 dark brown, each with row of stout marginal setae; disc of T5 without row of stout setae, whole segment with short fine setae. Terminalia in lateral view with small epandrium, long slender surstylus and cercus curving slightly posteriorly ( Fig. 19 View FIGURES 15–20 ); in posterior view, cerci broad at base, gradually tapering to tip ( Fig. 20 View FIGURES 15–20 ); phallus in lateral view with long, slender epiphallus curving posteriorly ( Fig. 109 View FIGURES 105–114 ); in dorsal view, hypophallic lobes broad and somewhat circular with coarse serrations ( Fig. 110 View FIGURES 105–114 ); T6, STS7+8, pre- and postgonite, ST6 and hypandrium as in Fig. 197 View FIGURES 195–201 ; ST1–5 as in Fig. 241 View FIGURES 239–251 .

Female. Similar to male except frons 0.26/2 of head width at narrowest, eye with median facets about 2x size of lateral facets. Terminalia with T6 of FU shape; T7 anterior edge with semicircular depressed area midway; T8 as separate sclerites ( Fig. 284 View FIGURES 282–287 ); ST6–8 and hypoproct as in Fig. 328 View FIGURES 326–349 ; spermathecae tuberform ( Fig. 372 View FIGURES 370–400 ); ST1–5 as in Fig. 413 View FIGURES 411–423 .

Material examined. Brazil, Federal. 1 ♂*, 1 ♀ *, Rio de Janeiro, ix.1938, M.E.S. Bras. ( USNM)   . São Paulo. 1 ♀, Boraceia, Salesopolis , 15.iii.1972 ( NHMUK)   ; 1 ♀ ♦ ( TLW385)   , Santo Andre, R.B.A. da Sierra de Paranapiacaba , 23°46ʹ46ʺS 46°18ʹ29ʺW, 21.xii.2010, Malaise 3, M. Sato, S. Nihei ( MZSP) GoogleMaps   ; 1 ♂, same data except 19.iv–23.v.2011, Malaise 1, P. Moll, F. Gudin. ( MZSP) GoogleMaps   .

Distribution. Brazil. Bonatto (2001) also listed it from Paraguay.

Remarks. A single specimen was barcoded during this study ( TLW 385) and two additional sequences were taken from GenBank ( KR820705 View Materials , KR820706 View Materials ). All sequences clustered together close to L. fusconitida   and L. patriciae   ( Fig. 488 View FIGURE 488 ). The genetic distance between L. nigripes   and L. fusconitida   is 11%, as is the distance between L. nigripes   and L. patriciae   .


Fudan University, Department of Biology


Smithsonian Institution, National Museum of Natural History


Natural History Museum, London


Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo














Laneella nigripes Guimarães, 1977

Whitworth, Terry L. & Yusseff-Vanegas, Sohath 2019

Laneella nigripes

Wolff, M. & Ramos-Pastrana, Y. & Pujol-Luz, J. R. 2013: 59
Vargas, J. & Wood, D. M. 2009: 1301