Tribonium morroferrensis, 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 : 120-122

Taxon classification Animalia Blattodea Blaberidae

Tribonium morroferrensis sp. n. Figs 9-16

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 Morro do Ferro, where the material was collected.

Description.

Dimensions (mm): Male holotype, total length 25.3; length of pronotum 4.6; width of pronotum 8.2; length of tegmina 21.6; width of tegmina 7.7.

Male holotype. Coloration yellowish brown with dark brown spots (Fig. 9). Head black with yellowish brown ocellar and clypeal areas (Fig. 10). Pronotum medially with symmetrical spots, without definite shape (Fig. 11). Tegmina with anal field with brown spots. Marginal and scapular fields light brown with brown spots. Pulvilli light brown. Arolia and claws brown.

Head. Triangular, vertex slightly exposed, interocular space ample, 1.9 mm, approximately 2/3 distance between antennae. Antenna not reaching apex of tegmen. Palpi and antennae ciliated; second segment of maxillary palpi small, third segment 0.70 mm in length, fourth segment same size as second, fifth segment clavate, similar in size to third segment, conspicuously ciliated.

Thorax. Pronotum convex, transverse, apical surface embossed, with rounded margin and straight basal surface. Tegmina developed, extending beyond apex of cerci; marginal field short and slightly concave; scapular field tapering toward apex, discoidal field 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 thigh narrow with clear apical projection. Fore, mid and hind femora sparsely ciliated along anteroventral border. Pulvilli small, present on fourth tarsal segments; claws simple, symmetrical, with concave arolia.

Abdomen. Supranal plate ciliated, with prominent median edges between enclosures, with slight median invagination; cerci short, ciliated, with 12 segments (Fig. 12). Subgenital plate asymmetrical (Fig. 13). Right phallomere hook-shaped, with subapical cleft (Fig. 14); median sclerite with pre-apical lateral projection (Fig. 15); left phallomere slightly sclerotized (Fig. 16).

Diagnosis.

Tribonium morroferrensis sp. n. resembles Tribonium guttulosum (Walker, 1868) in general coloration and pronotum (Figs 11, 19), but differs in size and coloration of the tegmina (Figs 9, 17), color of head (Figs 10, 18), and genital parts (Figs 14-16, 22-24). The supranal and subgenital plates are blaberoid type (Figs 12-13; 20-21).