Syneches annulipes Bezzi, 1909

Soares, Matheus M. M., Freitas-Silva, Rafael A. P. & Ale-Rocha, Rosaly, 2021, Review of Brazilian species of Syneches Walker (Diptera, Hybotidae, Hybotinae), with description of ten new species, Zootaxa 5049 (1), pp. 1-84 : 15-16

Syneches annulipes Bezzi

( Figs 7A–E , 57 )

Syneches annulipes Bezzi, 1909: 316 ; Collin, 1933: 28 (cit.); Smith, 1967: 9 (cat.); Rafael & Ale-Rocha, 1995: 536, figs 47–49, 66 (rev.); Yang et al., 2007: 306 (cat.); Ale-Rocha & Vieira, 2008: 115 ( Brazil); Menezes & Ale-Rocha, 2016: 408–409 , figs 17–18, 118 (diagn., female, distr.); Soares & Ale-Rocha, 2018: 639, figs 9, 14 (NE Brazil). Type locality: Mapiri, La Paz, Bolivia.

Diagnosis. Small size (2.3 mm) ( Fig. 7A ). Antenna brown to dark brown ( Fig. 7C ). Scutum mostly rounded, broader than mesopleuron in lateral view, covered with reddish brown pruinescence, except on pprn lb and prescutellar disc, both covered with gray pruinescence, one spot of gray pruinescence on npl and other just above npl ( Figs 7B, D ). Scutellum covered with gray pruinescence ( Fig. 7D ). Wing hyaline to sub-hyaline, pterostigma small, set distal to apex of R 1, limited to a slight infuscation posterior to apex of R 1 or pterostigma inconspicuous, only with apex of R 2+3 darkened; R 2+3 slightly angulate near apex; second section of M 1 as long as crossvein r-m; cell bm slightly longer than cells br and cua ( Fig. 7E ).

Material examined. BRAZIL. Roraima: Bonfim, Ig [arapé] Arraia , Varredura , v.1991, J.A. Rafael, R.A. Rocha, J. Vidal, Comparado com tipo [compared with holotype], Syneches annulipes, Det. R. Ale-Rocha (1 ♂, INPA) . Rondônia: Vilhena , 12°46′55″S 60°22′18″W, 25.iv.2006, J.A. Rafael & F.F. Xavier F., Arm. luz (1 ♀, INPA) . Maranhão: Mirador, Parque Est. Mirador, Base da Geraldina , 06°37′25″S 45°52′08″W, Varredura , 14–18.viii.2012, F. Limeira-de-Oliveira, J.S. Pinto Junior & D.W.A. Marques (1♂, 1♀, CZMA) ; idem, Armadilha suspensa, 10- 16.v.2013, F. Limeira-de-Oliveira, L.L.M. Santos & L.S. Santos (1 ♀, CZMA) ; idem, Base dos Cágados, 06°46′29″S 45°06′28″W, Armadilha de Malaise , 26.xi.2011 (1♀, CZMA) ; Carolina, PARNA Chapada das Mesas, Água Fria , 212 m, 07°04′14.11″S 47°17′16.40″W, Armadilha Suspensa (5 ♂, CZMA) , 13–20.viii.2014, J.A. Rafael, F. Limeira-de-Oliveira, T.L. Rocha & G.A. Reis, cols. (1 ♂, CZMA) ; Caxias, Zona Rural, Olho D’água das Moças, 04°39′43″S. 43°03′13″W, Varredura , 24.vii.2012, J.A. Rafael, F.Limeira-de-Oliveira & J.S. Pinto Junior (1♂, CZMA) .

Distribution. Brazil (Amazonas, Mato Grosso, Maranhão *, Pará, Piauí, Rondônia * and Roraima) ( Fig. 57 ); Bolivia. Syneches annulipes was previously known to occur in the Amazon and Caatinga biomes and now is also registered in the Cerrado biome.

Remarks. Syneches annulipes is similar to S. vidali by the scutum broader than mesopleuron in lateral view and pruinescence pattern on scutum and scutellum. However, S. annulipes differs from the latter in having a small pterostigma, located distal to the apex of R 1 or inconspicuous. In contrast, S. vidali has the pterostigma divided into two dark spots.

Figures

FIGURE 7. Syneches annulipes Bezzi, 1905 (male from Roraima compared with holotype).A. Habitus, lateral view; B. Thorax, lateral view; C. Head, lateral view; D. Thorax, posterior view; E. Wing.

FIGURE 57. Syneches Walker. Geographical records of S. annulipes Bezzi, 1909; S. flaviscutellatus sp.nov. and S. longiflagellatus Ale-Rocha & Vieira, 2008 in Brazil.