Xestoblatta rondonensis, Silva-da-Silva, Luiz Rafael & Lopes, Sonia Maria, 2015

Silva-da-Silva, Luiz Rafael & Lopes, Sonia Maria, 2015, Two new species of Xestoblatta Hebard, 1916 from Brazil, a redescription of Xestoblattaroppai Rocha e Silva Albuquerque & Fraga, 1975 and a key for the species of the buscki group (Blattodea, Ectobiidae, Blattellinae), ZooKeys 526, pp. 117-129 : 119-121

Taxon classification Animalia Blattodea Ectobiidae

Xestoblatta rondonensis sp. n. Figs 12-22

Type material.

Holotype ♂, Brazil, Rondônia, Parque Estadual Guajará-Mirim, 26/01/1998, M.C. Araújo, Robson, Laurivite & João Raimundo leg. Atrás do acampamento. Paratypes: 1 ♂ and 2 ♀, same data as the holotype, and 3 ♀, Reserva Mamoré, trilha atrás do acampamento (trail behind campsite) MNRJ.

Diagnosis.

This species is characterized by having subgenital plate with margin ciliated, styles inserted laterally and spiny projection below left style. Right style rectangular with seven small sclerotized spines, inserted on lateral surface of style; left style short, not extending to 1/5 of subgenital plate, bifid, claw-shaped; accessory style present, curved, pointed, smaller than right style. Supra-anal plate trapezoidal with margin setose, cerci with 19 segments. Right paraproct long, extended beyond half of supra-anal plate, with two apical lobes, one slender and the other convex. Genitalia with left phallomere hook-shaped and with apical projection sclerotized; median sclerite slender, pointed, with slight apical curvature; right phallomere shaped as an inverted “Y” with sclerotized base.

Description.

Holotype. Male dimensions (mm) holotype ♂: Total length: 26.0; length of pronotum: 5.4; width of pronotum: 6.8; length of tegmen: 23.5; width of tegmen: 6.5.

General coloration. Dark brown and shiny (Fig. 12). Pronotum with lateral flaps light brown, contrasting with disk (Fig. 13). Head light brown (Fig. 14); antennae and maxillary palp golden tomentose. Tegmen with marginal field light brown. Legs reddish-brown and shiny; pulvilli whitish.

Head. Triangular and small; vertex covered by pronotum in dorsal view, interocular space ample, about 2/3 distance that separates antennal insertions; ocelli large and conspicuous; antennae long and ciliated, extending past apex of abdomen; maxillary palp ciliated, 3rd segment longer than the others, 4th segment slightly smaller than 5th, both dilated, 4th segment expanded apically and 5th basally.

Thorax. Pronotum convex and subtrapezoidal, with apex straight, base slightly angular and lateral flaps deflected, with round borders. Disk of pronotum without sulci. Tegmen long, extending beyond apex of abdomen; marginal field narrow and elongated, scapular field long with veins obliquely arranged; discoidal field ample, with veins arranged longitudinally and anal field elongate, with 8-9 axillary veins. Wings developed; apex of radial vein rami and costal field not dilated; anal field fan-folded and with small apical triangle. Legs long and spiny; fore femur on anteroventral surface with four spines up to median region, followed by series of strong spines that gradually decrease in size toward apex, and three large apical spines; posteroventral surface with five developed spines, one apical. Mid and hind femora with ventral surfaces similar, with seven developed spines, spaced, one apical; genicular spine present; pulvilli present on all tarsal segments; arolia developed; claws symmetrical and not specialized.

Abdomen. Tergite I modified, bearing row of setae (Fig. 15) and segment VII with medio-lateral concavity (Fig. 16). Subgenital plate with margin ciliated, styles inserted later ally and spiny projection below left style. Right style rectangular with seven small sclerotized spines, inserted on lateral surface of style; left style short, not extending to 1/5 of subgenital plate, bifid, claw-shaped; accessory style present, curved, pointed, smaller than right style (Fig. 17). Supra-anal plate trapezoidal with margin setose, cerci with 19 segments (Fig. 18). Right paraproct long, extended beyond half of supra-anal plate, with two apical lobes, one slender and the other convex (Fig. 19). Genitalia with left phallomere hook-shaped and with apical projection sclerotized (Fig. 20); median sclerite slender, pointed, with slight apical curvature (Fig. 21); right phallomere shaped as an inverted “Y” with sclerotized base (Fig. 22).

Remarks.

This species is similar to Xestoblatta mamorensis in the bilobed right paraproct with one slender lobe, and the distribution of styles on the subgenital plate. It differs in the shape of the right style (Fig. 17), coloration and habitus (Fig. 12), and right phallomere (Fig. 22)

Etymology.

The species name honors the state of Brazil where the species was collected.

Known geographical distribution.

Brazil (RO)