Tribonium caldensis, da Silva, Leonardo de Oliveira Cardoso & Lopes, Sonia Maria, 2015

da Silva, Leonardo de Oliveira Cardoso & Lopes, Sonia Maria, 2015, Two new species of Tribonium Saussure, 1862 (Blattodea, Blaberidae, Zetoborinae), with a key to males of the genus, ZooKeys 502, pp. 117-127 : 120

Taxon classification Animalia Blattodea Blaberidae

Tribonium caldensis sp. n. Figs 1-8

Type-material.

Holotype ♂, BRAZIL, Minas Gerais, Poços de Caldas, Morro do Ferro, 07/IX/1967, J. Becker, O. Roppa, O. Leoncini cols.

Etymology.

The species name refers to the city of Poços de Caldas, where the material was collected.

Description.

Dimensions (mm): Male holotype, total length 23.2; length of pronotum 4.2; width of pronotum 7.9; length of tegmen 19.8; width of tegmen 6.5.

Male holotype. Coloration yellowish brown with dark brown spots (Fig. 1). Head black with yellowish brown ocellar and clypeal areas (Fig. 2). Pronotum medially with symmetrical dark brown spots of no definite shape (Fig. 3). Apex of anal field of tegmina pale with brown spots. Marginal fields and scapular with brown spots. Pulvilli light brown. Arolia and claws dark brown.

Head. Triangular; vertex slightly exposed; interocular space ample, 1.6 mm, wider than 2/3 distance between antennae. Antenna not reaching apex of tegmen. Palps and antennae tomentose; second segment of maxillary palps small, third segment 0.71 mm in length, fourth segment same size as second, fifth segment clavate, similar in size to third segment.

Thorax. Pronotum convex, transverse, apical surface embossed, with rounded edges and straight basal surface. Tegmina developed, extending beyond apex of cerci; marginal field short and slightly concave; scapular field tapering toward apex, mid-field discoidal, extended apically, slightly angular along veins. Wings with marginal field narrow, subcostal vein reaching basal third of scapular field; cubital vein with numerous complete and few incomplete veins; apical triangle absent. Legs short, robust, inner side of femora with narrow posterior apical projection. Fore, mid and hind femora sparsely ciliate along anteroventral margin. Pulvilli small, present on fourth tarsal segments; claws simple, symmetrical, with concave arolia.

Abdomen. Supranal plate ciliated, with prominent median edges between enclosures and with slight invagination in middle portion; cerci short, ciliated, with 11 segments (Fig. 4). Subgenital plate asymmetrical (Fig. 5). Right phallomere hook-shaped, with subapical slit (Fig. 6); median sclerite with pre-apical lateral projection and apical sclerite elongated (Fig. 7); left phallomere slightly sclerotized (Fig. 8).

Diagnosis.

Tribonium caldensis sp. n. resembles Tribonium neospectrum Lopes, 1978 in the coloration of the head (Figs 2, 26), pronotum (Figs 3, 27), differing in the coloration of the tegmina (Figs 1, 25) and the configuration of the genital parts (Figs 6-8, 30-32). The supranal and subgenital plates are the blaberoid type (Figs 4-5, 28-29).