Oiovelia rivicola Spangler 1986
Creators: name: Rodrigues, Higor D. D.
name: Melo, Alan Lane De
name: Ferreira-Keppler, Ruth L.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Veliidae
Oiovelia
Oiovelia rivicola

description: Oiovelia rivicola Spangler, 1986
(Figs 29–31, 41–43, 73)
Oiovelia rivicola Spangler, 1986: 446 (original description).
Type locality. Venezuela, Amazonas, Cerro de la Neblina.
Material examined. All specimens macropterous. BRAZIL: AMAPÁ: 1 ♂ (INPA), Serra do Navio, Rio Cachaço, Cachoeira do Fernando, 00°53 ' 18.8 ″ N / 52°01 ' 22.9 ″ W, 02.viii.2011, A.M.O. Pes, P.V. Cruz & A.S. Fernandes coll. AMAZONAS: 1 ♂ (DPIC), Presidente Figueiredo, BR-174, Km 110, Rio Urubuí, 02º01 ' 05 ″ S / 60º02 ' 04 ″ W, 10.x.2002, D.L.V. Pereira coll.; 2 ♂♂ (DPIC), same data of the previous locality, except Igarapé Camarão, 01º01 ' 05 ″ S / 60º02 ' 02 ″ W; 6 ♂♂(DPIC), same data, except Km 107, Cachoeira Santa Cláudia, 02º02 ' 17 ″ S / 60º00 ' 55 ″ W; 5 ♂♂ 1 ♀ (INPA), Presidente Figueiredo, BR-174, Km 115, Igarapé das Lajes, 01°59 ' S / 60°01 ' W, 01.vii.2011, H.D.D. Rodrigues coll.; 1♂ 1♀ (DPIC), Presidente Figueiredo,AM-240, Km 12, Reserva Ecológica Cachoeira do Santuário, 02°03 ' 43 ″ S / 59°55 ' 44 ″ W, 15.x.2002, D.L.V. Pereira coll.; 52 ♂♂35 ♀♀ (INPA), same data of the previous locality, except 30.vi.2011, H.D.D. Rodrigues coll.; 17 ♂♂ 8 ♀♀ (INPA), 2 ♂♂ 2 ♀♀ (NMPC), Presidente Figueiredo, AM-240, Km 13, Cachoeira da Porteira, 02°02 ' 15 ″ S / 59°54 ' 53 ″ W, 30.vi.2011, H.D.D. Rodrigues coll.; 19 ♂♂14 ♀♀ (INPA), Presidente Figueiredo, AM-240, Km 20, Igarapé da Onça, Balneário Sossego da Pantera, 02°02 ' 34 ″ S / 59°51 ' 08 ″ W, 29.vi.2011, H.D.D. Rodrigues coll.; 8 ♂♂1 ♀ (INPA), Presidente Figueiredo, AM-240, Km 20, Sítio Santo Amaro, 02°04 ' 05 ″ S / 59°54 ' 28,8 ″ W, 18.viii.2011, H.D.D. Rodrigues coll.; 2 ♂♂2 ♀♀ (DPIC), same data, except Balneário Água Viva, Km 12, 02º03 ' 11 ″ S / 59º55 ' 24 ″ W, 15.x.2002, D.L.V. Pereira coll.; 41 ♂♂24 ♀♀ 24 nymphs (INPA), São Gabriel da Cachoeira, Igarapé Miuá, 00°06 ' 14.2 ″ S / 66°52 ' 31.3 ″ W, 24.viii.2011, R.L. Ferreira-Keppler, P.V. Cruz, A.S. Fernandes & E.A. Reis coll.; 11 ♂♂16 ♀♀ (INPA), Apuí, 06°51 ' 35 ″ S / 59°58 ' 32 ″ W, 03.v.1999, N. Hamada coll.
Dimensions. Macropterous male (n = 5; mm). BL 3.55–3.57; HL 0.51–0.55; HW 0.60–0.62; ANT I 0.55–0.57, ANT II 0.50–0.52, ANT III 0.37–0.38, ANT IV 0.45–0.47; EYE 0.15–0.17; PL 1.20–1.25; PW 1.12–1.17; FORE LEG: FEM 0.85, TIB 0.85–0.86, TAR I 0.06, TAR II 0.07, TAR III 0.31–0.32; MID LEG: FEM 1.02–1.03, TIB 1.12–1.15, TAR I 0.07, TAR II 0.15–0.16, TAR III 0.32–0.35; HIND LEG: FEM 1.15–1.17, TIB 1.45–1.50, TAR I 0.07–0.08, TAR II 0.22–0.26, TAR III 0.33–0.35.
Macropterous female (n = 5; mm). BL 3.90–4.12; HL 0.55; HW 0.65; ANT I 0.60–0.62, ANT II 0.52–0.55, ANT III 0.33–0.40, ANT IV 0.42–0.48; EYE 0.17–0.18; PL 1.40–1.42; PW 1.25–1.27; FORE LEG: FEM 0.92–0.95, TIB 0.92–0.94, TAR I 0.06, TAR II 0.07–0.08, TAR III 0.35; MID LEG: FEM 1.05–1.20, TIB 1.15–1.25, TAR I 0.07, TAR II 0.15–0.18, TAR III 0.37; HIND LEG: FEM 1.30–1.45, TIB 1.47–.167, TAR I 0.07–0.08, TAR II 0.25, TAR III 0.37–0.40.
Diagnostic characters. Head and pronotum reddish brown, except for the orange margins of the posterior lobe of pronotum. A pair of small areas of whitish pruinosity laterally on the anterior lobe and another more evident V-shaped area on the posterior lobe. Fore wings reaching the genital segments, with a faint uniform whitish pruinosity covering almost the entire wing and a pair of elongated pale yellow maculae at the base, starting from humeri and surpassing the apex of pronotum (Figs 29–31). Coxae and trochanters yellowish; femora and tibiae dark brown to black. Proctiger of the male without elevation or spines (Fig. 43). Paramere narrow medially, widening distinctly in posterior half of the dorsal surface, with subtruncate apex (Fig. 73).
Differential diagnosis. This species is known only in the macropterous form and is morphologically similar to O. cunucunumana; both species were collected in the same mass of foam. However, O. rivicola has a V-shaped pruinose area on posterior lobe of pronotum and posterior half of the paramere distinctly widened, subtruncate, whereas in O. cunucunumana the pruinosity is absent and the paramere is not distinctly widened posteriorly, having more setae along its margins. Also, both sexes are differentiated by the length of the antennomere IV, smaller (0.33–0.37 mm) and wider in O. cunucunumana, and longer (0.42–0.48 mm) and slender in O. rivicola. It differs from the others species which also have a V-shaped pruinosity on the posterior lobe of pronotum (Oiovelia chenae sp. nov., O. hamadae sp. nov. and O. pydanieli sp. nov.) in the fore wings without well-defined pruinose areas between the cells, which occur on the other three species.
Distribution and habitat. Venezuela (SPANGLER 1986) and Brazil: Amapá and Amazonas (present study). The first record for Brazil.
SPANGLER (1986) mentioned that all specimens examined in his study were collected by an ultraviolet light trap on the banks of the Baria river in a non-elevated region (140 m a.s.l.) in southern Venezuela. The author also assumed that its habitat would be possibly streams. Recently, specimens of O. rivicola were collected in foam masses formed in black water streams, both on the surface and in galleries formed within these.
description: Published as part of Rodrigues, Higor D. D., Melo, Alan Lane De & Ferreira-Keppler, Ruth L., 2014, Taxonomic revision of the Neotropical genus Oiovelia (Hemiptera: Heteroptera: Veliidae), pp. 65-98 in Acta Entomologica Musei Nationalis Pragae (suppl.) (suppl.) 54 (1) on pages 79-81, DOI: 10.5281/zenodo.4468235