Poeciloderrhis angelus, Silva & Lopes, 2020

Silva, Leonardo De Oliveira Cardoso Da & Lopes, Sonia Maria, 2020, Three new species of the genus Poeciloderrhis Stål, 1874 from Brazil (Blattodea Blaberidae, Epilamprinae) and neotype designation for Poeciloderrhis imperialis Rocha e Silva & Jurberg, 1978, Zootaxa 4810 (3), pp. 523-530 : 525-526

Poeciloderrhis angelus sp. n.

Figs. 2–11

Diagnosis. General coloration shiny yellowish-brown ( Fig. 2 ). Head with yellowish-brown to dark-brown vertex ( Fig. 3 ); interocular space dark brown, interantennal and further structures (gena and labrum) of the head yellowish brown with a dark brown stripe in the median region extending from the interocellar space to the end of the clypeus; maxillary palps with yellowish-brown apical segment and with golden cilia; eyes black. Pronotum semi-transparent, covered with tiny dark brown spots ( Fig. 4 ); tegmen semi-transparent, light-brown, with dark brown spots; legs light brown with dark-brown spines, arolia and claws. Abdomen light brown with brown punctations.

Dimensions of holotype male (mm): length 25.7; length of pronotum 6.5; width of pronotum 8.7; length of tegmen 21.8; width of tegmen 7.6.

Description of holotype male. Head with interocular space about 1.36 mm wide. Abdominal tergal modifications differentiated, with three longitudinal elevations on first segment and one elevation on the second segment ( Fig. 5 ); supranal plate rounded; cerci surpassing length of plate, presenting rows of ventral cilia on each segment of cerci ( Fig. 6 ); subgenital plate in ventral view with the right style short in ventral view and the left style long ( Fig. 7 ); left phallomere sclerotized ( Fig. 8 ); median sclerite with latero-apical aculeus, clubbed apex strongly sclerotized ( Figs. 9, 10 ); right phallomere with membrane bearing nine spines ( Fig. 11 ).

Female. Unknown.

Material examined. Holotype male, Brazil, Rio de Janeiro State, Itatiaia, PNI, Complexo do Maromba, Travessia Ruy Braga , PNI-M2B, Coleta 01, 22°26`07.5”S, 44°37’33.2”W, 1234 m elev., 02/VII-3/VIII/2015, BIOTA FAPERJ Project . Paratype male, Brazil, Rio de Janeiro State, Itatiaia, PNI, Complexo do Maromba, Cachoeira Véuda-Noiva , PNI-M2A, 22º25’36.10”S, 44º37’05.80”W, 1153 m elev., BIOTA FAPERJ Project .

Etymology. The species name, angelus , is derived from the name of collector of the specimen, Ângelo Parise Pinto (research from BIOTA/FAPERJ project).

Remarks. Poeciloderrhis angelus sp. n. is similar to P. atriventris (Saussure, 1895) in tegmen pigmentation (both dark-brown). The new species is distinguished from P. atriventris by having three longitudinal elevations on first segment ( P. atriventris with one hump in middle of first segment) and morphology of the genitalia (right phallomere with small curved apex in P. angelus sp. n., that of P. atriventris with ˩-shaped apex). In addition, the apical region of the median sclerite in P. angelus sp. n. has a clubbed shape, while in P. atriventris is curved and thorn-shaped.

Figures

FIGURES 2‒11. Poeciloderrhis angelus sp. nov. holotype ♂. 2—Habitus; 3—Head, ventral view; 4—Pronotum, dorsal view; 5—Tergal modification of first and second abdominal segments; 6—Supra-anal plate, dorsal view; 7—Subgenital plate, ventral view; 8—Left phallomere, dorsal view; 9, 10—Median sclerite; 11—Right phallomere, dorsal view.