Stridulivelia quadrispinosa ( Hungerford, 1929 )

Moreira, F. F. F., Nessimian, J. L., Rúdio, J. A. & Salles, F. F., 2010, New species and new records of Veliidae from Espírito Santo State and adjacent Minas Gerais State, Brazil, with notes on nomenclature (Insecta: Heteroptera: Gerromorpha), Journal of Natural History 44 (45 - 46), pp. 2761-2801 : 2798

Stridulivelia quadrispinosa ( Hungerford, 1929)

Stridulivelia quadrispinosa was previously known from Venezuela, Guyana, Brazil (PA, AM), Peru and Bolivia ( Polhemus and Spangler 1995), and is recorded for the first time from southeastern Brazil. However, some observed features were not mentioned in the original description or on the generic revision of Polhemus and Spangler (1995), including the presence of pegs on hind trochanter, a small central projection on posterior margin of genital segment I, and acute anterolateral projections on proctiger.

It is also noted that the antennomere I / head width trough eyes ratio does not fit perfectly with that given by Polhemus and Spangler (1995) in their identification key. According to the same authors, antennomere I is as long as or shorter than head width, but the ratio measured was of 1.06–1.09 / 1.00, near that defined by Hungerford (1929 a), of 1.08 / 1.00.

The above notwithstanding, other features, such as distribution and number of spinules on the stridulatory surfaces, presence of posterolateral projections on the terminal abdominal segment (ventral in males and dorsal in females), and the shape of the male paramere permit identification of our specimens as S. quadrispinosa .

Examined material

Brazil: Espírito Santo – Pinheiros, Reserva Biológica Córrego dos Veados , Rio Santo Antônio, Sede [18 ◦ 22 ′ 16.8 ′′ S, 40 ◦ 8 ′ 30.2 ′′ W 55 m asl], 10 February 2009, (F.F.F. Moreira): 1 brachypterous male, 1 brachypterous female. São Mateus, BR- 381 km 41, Nestor Gomes, Rio Tapuia [−18.68056 ◦ / −40.18241 ◦], 9 February 2009, (N. Ferreira- Jr): 1 brachypterous female. Sooretama, Reserva Biológica de Sooretama, Córrego da Estrada do Meio , 14 July 2008, (J.A. Rúdio and F.F. Salles): 1 macropterous male .