Syneches manaos Smith

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: 47-48

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Syneches manaos Smith


Syneches manaos Smith  

( Figs 30A–E View FIGURE 30 , 54 View FIGURE 54 )

Syneches manaos Smith, 1962: 215   ; 1967: 10 (cat.); Yang et al., 2007: 311 (cat.); Ale-Rocha & Vieira, 2008: 118 (cit.); Menezes & Ale-Rocha, 2016: 422–424 View Cited Treatment , figs 66–72, 111, 120 (rev., distr.). Type locality: Manaus, Amazonas, Brazil.

Diagnosis. Medium size (4.0 mm) ( Fig. 30A View FIGURE 30 ). Ocellar triangle flat ( Fig. 30B View FIGURE 30 ). Scutum rounded, as broad as mesopleuron in lateral view, dark brown, covered with dense pale golden pruinescence ( Fig. 30A View FIGURE 30 ). Legs mostly yellow to dark yellow except coxae, trochanters and all tarsomeres 5 brown, hind femur and apical 2/3 of hind tibia dark brown; mid tibia with 2 bristles about as long as mid tibia (1AD and 1AV both on basal third); hind femur strongly swollen on males ( Fig. 30C View FIGURE 30 ), slightly swollen on females ( Fig. 30D View FIGURE 30 ), with 1AV series of spiniform bristles inserted on prominent tubercles. Wing hyaline, with infuscation between crossvein r-m and bifurcation of Rs, and on apical margin; pterostigma brown, wide, quadrangular, filling apex of cell r 1; R 2+3 strongly angulate near apex ( Fig. 30E View FIGURE 30 ).

Material examined. BRAZIL. Amazonas: Manaus, Res. Km 41, PDBFF, 21–22.vii.2004, Trilha C I – SB, R. Querino (1 ♂, INPA)   ; idem, 12–13.v.2004 (1 ♀, INPA)   ; ZF-2, km 14 Torre , 02°35′21″S 60°06′55″W,, J.M. Cumming, S. Cumming, D.W.A. Marques & J.A. Rafael, sweeping (5 ♂, 2 ♀, CNC) GoogleMaps   ; Sitio Vida Tropical , 02°51′47″S 59°51′52″W,, J.M. Cumming, S. Cumming & J.A. Rafael, sweeping (2 ♀, CNC) GoogleMaps   . Pará: Belém, ( Área P-1),, Shope & de Freitas (2 ♂, 4 ♀, CNC)   . Roraima: Caracaraí, Vila Caicubi, Trilha do Bacaba , 00°58′36.5″S 62°06′08.7″W, 10.ix.2011, Malaise 2, Biffi, G. & Prado, L. R. cols. (1 ♀, INPA) GoogleMaps   .

Distribution. Brazil (Amazonas, Pará and Roraima *) ( Fig. 54 View FIGURE 54 ). Syneches manaos   is very abundant in forested places nearby Manaus (Amazonas), and for now, the species is known to occur only in the Amazon biome.

Remarks. Syneches manaos   is remarkably similar to S. repletus   , due to the flat ocellar triangle, mid tibia with long bristles, as long as tibia and hind femur strongly swollen in males bearing 1AV series of spiniform bristles inserted on prominent tubercles. However, in S. manaos   the hind femur is brown and R 2+3 is strongly angulated near the apex, while in S. repletus   the hind femur has the basal third to basal half yellow and R 2+3 is only slightly angulated near apex. According to Smith (1962), S. manaos   is closely related to S. curvineura Melander   and S. longiventris Melander   , but these two species have the ocellar triangle protuberant. Nevertheless, we have examined the syntypes of S. barypterus Melander   and S. planiceps Melander   as well as the original descriptions of Melander (1928) and there is no doubt that these species are closely related to S. manaos   and S. repletus   . Syneches applanatus   seems to be related to that group, but lacks the prominent tubercles on the hind femur.


Instituto Nacional de Pesquisas da Amazonia


Canadian National Collection of Insects, Arachnids, and Nematodes














Syneches manaos Smith

Soares, Matheus M. M., Freitas-Silva, Rafael A. P. & Ale-Rocha, Rosaly 2021

Syneches manaos

Menezes, I. S. & Ale-Rocha, R. 2016: 422
Ale-Rocha, R. & Vieira, R. M. 2008: 118
Yang, D. & Yao, G. & Zhang, K. & Zhang, J. 2007: 311
Smith, K. G. V. 1967: 10
Smith, K. G. V. 1962: 215