Poeciloderrhis vanzolinii, Silva & Lopes, 2018

Silva, Leonardo de Oliveira Cardoso da & Lopes, Sonia Maria, 2018, Six new species of Poeciloderrhis from Brazil (Blattaria: Blaberidae) with a new record and a new combination, Zoologia (e 12483) 35, pp. 1-10 : 6-7

Poeciloderrhis vanzolinii sp. nov.

http://zoobank.org/ 55D199EA-A98C-470F-94A8-DF9AA06068B4

Figs 50–59

Diagnosis. General coloration. Shiny, light brown ( Fig. 50). Head with light brown vertex ( Fig. 51); interocular and interantennal spaces brown; ocelli brown; maxillary palps with light brown apical segment, with golden cilia. Eyes dark brown. Pronotum light brown ( Fig. 52), semi-transparent, with brown punctuations. Tegmen light brown, semi-transparent, with brown spots. Legs light brown, with spines, pulvilli, arolia and claws brown. Abdomen brown, with middle portion of sclerite region dark brown.

Dimensions of holotype male (mm). Total length: 27.5; length of pronotum: 6.2; width of pronotum: 8.5; length of tegmen: 22.7; width of tegmen: 8.1

Description of the male holotype. Head triangular with rounded corners, vertex slightly exposed in dorsal view; interocular space about 1.34 mm long. Antennae threadlike and tomentose, surpassing apex of cerci. Maxillary palps with first and second segments reduced, third segment larger than fourth and fifth segments, slightly more dilated and densely tomentose.

Thorax. Pronotum ample, convex, with curved angles, base bearing small median projection. Legs with femur I with anteroventral surface with four strong spines up to median region, followed by series of small spines up to apex, apex with two strong apical spines; posteroventral surface with three strong spines, one apical; femora II and III with few strong ventral spines. Pulvilli present on all four tarsal segments, claws symmetrical and specialized, ventrally with two rows of small teeth, similar to those on legs. Tegmen surpassing apex of the abdomen. Marginal field wide, slightly concave, scapular field elongated with oblique venules, discoid field convex, curved apically, anal field convex and well-marked.

Abdomen. Tergal modification comprising three humped structures on first segment and one on second ( Fig. 53). Supranal plate with cerci surpassing plate in length, with ventral cilia ( Fig. 54). Subgenital plate asymmetric, with left style, in ventral view, larger than right ( Fig. 55). Left phallomere with strongly sclerotized middle region ( Fig. 56). Median sclerite with club-shaped apex, bearing small spine ( Figs 57 and 58). Right phallomere with apex curved and small spine near apex ( Fig. 59).

Material examined. Holotype male, BRAZIL, São Paulo State, Salesópolis , 22- V1-1947 , Travassos & Vanzolini cols, MNRJ.

Etymology. The species name, vanzolinii , is named is of eminent researcher Dr. Paulo Emilio Vanzolini, who collected of the specimen.

Remarks. Poeciloderrhis vanzolinii sp. nov. is similar to Poeciloderrhis ferruginea (Brunner von Wattenwyl, 1865) in the coloration of the pronotum (light brown, semi-transparent with brown punctuations in both), and size 27.5 mm (25.0–32.0 mm in P. ferruginea ). The new species might be distinguished from P. ferruginea by its tergal modification (three humped structures on first segment and one on second in P. vanzolinii sp. nov., while in P. ferruginea bears presents a piramidal, long, with cilia, located in the first tergite and a cavity followed by a curved rod in the second tergite, general coloration shiny light brown in P. vanzolinii sp. nov., while in P. ferruginea its presents shiny brown. The new species also might be distinguished by its shape of the genitalia (median sclerite with club-shaped apex and right phallomere with a small curved apex in P. vanzolinii sp. nov., while P. ferruginea bears a mediansclerite with spiked apex and a right phallomere with an ax-shaped apex.