Xestoblatta roppai Rocha e Silva & Fraga, 1975

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 : 121-122

Taxon classification Animalia Blattodea Ectobiidae

Xestoblatta roppai Rocha e Silva & Fraga, 1975 Figs 34-44

Type material.

Holotype ♂ - Brazil: Mato Grosso, Vila Vera, X-1973, Roppa & Alvarenga col. Museu Nacional, UFRJ, Rio de Janeiro, Brazil.

Dimensions

(mm). Holotype ♂ Total length: 26 to 30; length of pronotum: 4.0; width of pronotum: 5.9; length of tegmen: 22.3; width of tegmen: 11.4.

Description.

General coloration dark brown, shiny (Fig. 34). Pronotum yellowish brown; central disk with scattered brown marks (Fig. 35). Head rusty yellow; frons and clypeus with occasional marks and labrum brown (Fig. 36). Antennae with basal segments pale and apical segments pigmented. Ocelli whitish. Legs with brown mark at base of coxae and margins. Abdomen dark brown with white marks from tergite I to tergite IV; tergite VII with white lateral marks; sternite orange brown.

Head. Triangular, interocular space half width of antennal insertions. Ocelli well developed. Vertex slightly exposed. Maxillary palp setose on segments 4 and 5, 3rd and 5th segments subequal in length; 4th segment slightly smaller than both.

Thorax. Pronotum slightly convex, angulate on posterior surface, widest in medio-caudal region. Lateral flaps developed and deflexed. Legs robust with coxae wide; fore femur on anteroventral surface with row of 9 long spines, decreasing in size toward apex and ending in 3 elongate apical spines. Posteroventral surface with sparse spines, irregular, last spine apical. Fore and hind femora with spines on both margins and genicular spines. Pulvilli, arolia, and claws well developed. Tegmen well developed, reaching beyond tip of cerci. Marginal field well demarcated. Discoidal field convex and with venular arrangement. Anal field ample, convex, with six axillary veins. Wings developed; anal field fan-folded; apical triangle small.

Abdomen. Tergites I and VII modified (Figs 37 and 38). Subgenital plate asymmetrical, setose at apex and styles unequal in shape and size, inserted laterally on plate. Right style bifid and pointed, with accessory style; left style rectangular, with approximately six spines on ventral margin (Fig. 39). Supra-anal plate projected between cerci, bilobed apically, setose on margins. Cerci long (Fig. 40). Right paraproct long, L-shaped, reaching beyond half the length of the supra-anal plate, covered ventrally with sclerotized setae resembling spines (Fig. 41). Genitalia with left phallomere hook-shaped, recurved internally (Fig. 42). Median sclerite elongate, with apex slightly curved and pointed (Fig. 43); right phallomere weakly sclerotized, median portion triangular (Fig. 44).

Known geographical distribution.

Brazil (MT)