Syneches vidali Ale-Rocha & Vieira

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 : 72-75

Syneches vidali Ale-Rocha & Vieira

( Figs 47A–E , 55 )

Syneches vidali Ale-Rocha & Vieira, 2008: 120 , figs 29–35, 40; Menezes & Ale-Rocha, 2016: 433 , fig. 123 (key, distr.). Type locality: Parque Nacional do Jaú, Amazonas, Brazil.

Diagnosis. Small size (2.6 mm) ( Fig. 47A ). Antenna with scape and pedicel brown, postpedicel brown on basal half and pale yellow on apical half ( Fig. 47C ), sometimes varying from entirely brown to entirely yellow. Scutum broader than mesopleuron in lateral view, dark brown covered with reddish brown pruinescence, except by pprn lb, dc stripe and prescutellar disc covered both with gray pruinescence; one circle of gray pruinescence on npl and other just above npl ( Fig. 47B ). Wing sub-hyaline, pale brown, pterostigma divided into two brown spots, one triangular, posterior to apex of R 1, and one quadrangular extended beyond the apex of cell r 1; second section of M 1 slightly longer than crossvein r-m ( Fig. 47E ).

Type material examined. HOLOTYPE ♂ ( INPA) labelled: “ BRASIL, Amazonas , Parque Nacional [do] Jaú, 29.vii–08.viii.2001, 01°54′46″S 61°35′23″W; Arm[adilha] Malaise, campina arbustiva, Henriques & Vidal” “Holótipo, Syneches vidali Ale-Rocha & Vieira [red label]” . Holotype condition: good; not dissected.

Additional material examined. BRAZIL. Maranhão: Bom Jardim, REBIO-Res. Biol. Gurupi, Armad. Luminosa Móvel , 17–27.i.2010, F. Limeira-de-Oliveira, J.T. Câmara & M.B. Aguiar Neto, cols. (3♀, CZMA) . Rio Grande do Norte: Baía Formosa, Mata Estrela , 06°23′19″S 35°01′05″W, 44 m, 24.v.2007, J.A. Rafael & F.F. Xavier F., Luz (2 ♂, INPA) . Minas Gerais: Ouro Preto , 12–13.iv.1968, F.C. Val, col. (4 ♂, 1 ♀, MZUSP) . São Paulo: Cássia dos Coqueiros, Mun. Cajuru , ix.1954, M.P. Barretto col. (3 ♂, MZUSP) ; Praia de Guaratuba, Bertioga , 1969, F.C. Val, col. (1 ♂, MZUSP) .

Distribution. Brazil (Amazonas, Maranhão *, Minas Gerais *, Rio Grande do Norte *, São Paulo *) ( Fig. 55 ). Syneches vidali was originally described from the Amazon biome and it is now recorded occurring also in the Atlantic Forest biome.

Remarks. Syneches vidali is similar to S. maculosum as mentioned above (see “Remarks” under S. maculosum ). However, S. vidali can be differentiated by the pruinescence pattern on the scutum and the pterostigma extends beyond the apex of cell r 1.

Figures

FIGURE 47. Syneches vidali Ale-Rocha & Vieira, 2008.A–D. Holotype male.A. Habitus, lateral view; B. Thorax, lateral view; C. Head, lateral view; D. Hind leg, anterior view. E. Male from Minas Gerais. Wing.

FIGURE 55. Syneches Walker. Geographical records of S. moraballi Smith, 1963; S. tomentosus Smith, 1962 and S. vidali Ale- Rocha & Vieira, 2008 in Brazil.