Xestoblatta amaparica Rocha e Silva Albuquerque & Gurney, 1962

Silva-da-Silva, Luiz Rafael & Lopes, Sonia Maria, 2016, A new species of the Xestoblatta surinamensis group from Amazonia, northern Brazil, with redescriptions of X. amaparica, X. surinamensis and X. vera (Blattodea: Ectobiidae), Zoologia (e 20160041) 33 (6), pp. 1-9 : 2-5

Xestoblatta amaparica Rocha e Silva Albuquerque & Gurney, 1962

Figs. 13-23

Diagnosis. General coloration pale brown ( Fig. 13 ). Head opaque with dark-brown marks scattered over it ( Fig. 14 ). Vertex with small brown mark, interocular space with ill-defined dull bands, paler anteriorly, separated from clear area. Maxillary palp brownish yellow. Ocelli brown. Pronotum brown, margin narrow and dull. Central disk opaque with dark marks on each side of median area ( Fig. 15 ). Legs pale, with marks. Color of spines same as legs. Legs. tegmen translucent brown.

Dimensions (in mm). Total length: 22-23; length of pronotum: 4.00; width of pronotum: 4.87; length of tegmen: 16.83; width of tegmen: 7.41.

Redescription. Head triangular, with ocelli developed, interocular space 0.64 mm, almost half distance between antennal bases.Vertex slightly exposed.Pronotum convex and subtrapezoidal, apex straight, base slightly angular with lateral flaps slightly deflexed and margins round, widest at mid-caudal region. Disk of pronotum without sulci. Legs long, robust, with wide coxae. Femur I with anteroventral margin bearing row of 13 long spines gradually decreasingin size apically, ending in three long spines. Femora II and III with 7 spines on both surfaces; with geniculate spine. Pulvilli, arolia and claws moderately developed. Tegmen well-developed, marginal field slightly deflected, median vein with three rami, 6 cubital and 7 anal veins. Abdomen with tergite VII bearing tergal modification, with deep depression divided medially by conspicuous prominence ( Fig. 16 ). Sixth tergite emarginate posteriorly. Supra-anal plate triangular, ample, projected between cerci and with bilobed apex ( Fig. 18 ). Right paraproct cylindrical, with apex bulbous and a few apical spines ( Fig. 19 ). Left paraproct with two lobes, one trifid, the other cylindrical with three apical spines ( Fig. 20 ). Subgenital plate small, asymmetric ( Fig. 17 ). Right stylus (ventral view) small, sclerotized, curved medially; left stylus elongate, sclerotized, curved apically. Left phallomere hook-shaped (L3), with apex slightly dilated, and small globular apical projection ( Fig. 21 ). Median sclerite slender (L2vm), simple ( Fig. 22 ). Right phallomere (R2) with elongated projection, widened distally, bearing spines ( Fig. 23 ).

Material Examined. Paratypes 3 males, 2 females. BRAZIL, Pará: I.P.A.M. [Instituto de Pesquisa Ambiental da Amazônia] , 04/1966, L. Gomes leg. All specimens deposited in MNRJ .

Remarks. The subgenital plate of X. amaparica is consistent with the pattern found in the X. surinamensis group with respect to size, insertion of styles, and shape of paraprocts. It differs from other species of the group in the configuration of the styles on the subgenital plate ( Fig. 17 ), and the right paraproct cylindrical with a bulbous apex and a few apical spines ( Fig. 19 ).

Figures

Figures 13-23. Xestoblatta amaparica, paratype male: (13) Habitus, dorsal view, length 23 mm; (14) head, ventral view; (15) Pronotum, dorsal view; (16) Tergal modification of the tergite VII, dorsal view; (17) Subgenital plate, ventral view; (18) Supra anal plate, dorsal view; (19) Left paraproct, dorsal view; (20) Right paraproct, dorsal view; (21) Left phallomere (L3), dorsal view; (22) median sclerite (L2vm), dorsal view; (23) Right phallomere (R2), dorsal view. Scale bars: 14, 16 = 2.5 mm, 15 = 3.0 mm, 17-18 = 2.0 mm, 19-20, 22-23 = 1.0 mm, 21 = 0.7 mm.