Poecilocricus mataraca, Rodrigues & Campos & Rodrigues, 2022

Rodrigues, Patrícia Elesbão Silva, Campos, Luiz Alexandre & Rodrigues, Everton Nei Lopes, 2022, Cladistic analysis and taxonomic revision of the genus Poecilocricus Schubart, 1962 (Diplopoda, Spirobolida, Rhinocricidae), Organisms Diversity & Evolution (New York, N. Y.) 22 (1), pp. 141-160 : 149-150

Composition. Poecilocricus singularis Schubart, 1962a ; P. mataraca sp. nov.; P. vazante sp. nov.; P. itacarambiensis sp. nov. and P. lina sp. nov..

Poecilocricus singularis Schubart, 1962a ( Figs. 5 , 6 , and 13).

Type material. Poecilocricus singularis Schubart, 1962a: 265–268 , Figs. 1–7 . Male holotype, from BRAZIL, Bahia, Feira de Sant’Ana (currently Feira de Santana), Chana Malagolowskin [sic Chana Malogolowkin] leg., deposited in MZSP (1154), examined. Marek et al., 2003: 44.

Additional material examined. BRAZIL: Bahia, Feira de Santana , (38°58′00″ W, 12°16′00″ S), two males, one female, same data of holotype ( MZSP 1145 ) .

Diagnosis. Poecilocricus singularis resembles Poecilocricus mataraca sp. nov. by the shape of anterior gonopod which has an extremely short sternite ( Figs. 5e and 6a ); telopodite with an elongated and narrow lobule ( Figs. 5e, f , and 6a, b ); lateral border of coxite is constricted and length of medial portion is shortened ( Figs. 5e and 6a ), but differs by the shape of sternite of the anterior gonopod which is rectangular ( Figs. 5e and 6a ); apex of coxite is very rounded and telopodite is oval. Telopodite of the posterior gonopod slightly curved with inner branch shortened ( Figs. 5d and 6c ).

Redescription. Male (MZSP 1145) ( Fig. 5a–c ) with 53p + 2a + T. Total length 57.0 mm. Total width 7.6 mm. Coloration in alcohol: head gray, antennae grayish brown, with numerous apical sensory cones. Collum edge yellowish, in median portion reddish brown. Prozonites gray; metazonites reddish brown with yellowish posterior margin. Legs and telson grayish brown. Ozopores beginning at the sixth body ring. Scobinae semicircular, beginning at seventh ring. Telson with epiproct not surpassing the paraprocts. Hypoproct semicircular. Leg pairs 3–7 of male ( Figs. 1e–g and 5b ). coxae of leg pair 3 expanded into a large process and with pointed apex with short setae. Coxae of leg pair 4 without setae on apex; process of coxae of leg pair 5 is longer than process of coxae of leg pairs 3 and 4; its apex is rounded. Coxae of leg pair 6 expanded into a large process with apex truncated. Process of coxae of leg pair 7 is similar to coxae of leg pair 5. Gonopods ( Figs. 5d–f and 6a–c ). Anterior gonopod wider than long, sternite extremely short relative to coxite and telopodite, base large, in the medial portion with apex pointed. Coxite rounded constricted in the lateral portion, in the medial portion presence of round bulge at both sides. Telopodite oval and short with a distal thin and truncated lobule. Telopodite of the posterior gonopod distally slightly curved and split in three short branches. The external branch is bifurcated in a shortened inner branch and in a thin and curved outer branch. Solenomere lanceolated.

Female. (MZSP 1145) coloration as in male. With 54p + 1a + T. Total length 65.0 mm. Total width 8.4 mm.

Distribution. Known only from the type locality.

Figures

Fig. 5 Poecilocricus singu- laris Schubart, 1962a, male (MZSP 1145) a–f. a Anterior body rings, ventrolateral view; b anterior body rings, ventral view; c posterior body rings, lateral view; d left posterior gonopod, anterior view; e anterior gonopod, anterior view; f anterior gonopod, posterior view. cxt coxite, eb external branch, ep epiproct, ib inner branch, lob lobe, pr paraproct, sl solenomere, st sternite, tl telopodite. Scale=1 mm

Fig. 6 Poecilocricus singularis Schubart, 1962a, male (MZSP 1145) a–c. a Anterior gonopod, anterior view; b anterior gonopod, posterior view; c left posterior gonopod, anterior view. cxt coxite, eb external branch, sl solenomere, st sternite, tl telopodite. Scale=1 mm

Fig. 1 Characters of external morphology. a Gnathochilar- ium, showing detail of mentum, Poecilocricus singularis, character 4 (1); b second body ring in ventral view, Poecilocri- cus singularis, character 7 (1). Seventh body ring in ventral view: c showing opening of gonopod without constriction, Erythrocricus sanguineostria- tus, character 10 (0); d showing opening of gonopod constricted, Argentocricus nobilis, character 10 (1). Poecilocricus singularis: e coxae of leg pair 5, character 14 (2); f coxae of leg pair 6, character 15 (2); g coxae of leg pair 7, character 16 (2); h telson in ventral view, showing shape of opening of paraproct, character 20 (0). cx coxae, hp hypoproct, m mentum, pr parap- roct, stp stipes. Scale=1 mm

Fig. 2 Characters of anterior gonopod. a sternite constricted of Rhinocricus cachoeirensis, character 24 (1); b coxite of Poecilocricus singularis with similar round spots at both sides, character 26 (1) and constriction in lateral portion, character 27 (1); c membranous rounded bulge in medial portion of telopodite, Argentocricus subtriangularis, character 32 (1); d coxite in medial portion constricted, character 34 (0) and chitnized rounded bulge of telopodite, Erythrocricus electrofasciatus, character 32 (0); e coxite shortened in medial portion, Poecilocricus mataraca sp nov., character 35 (1). cxt coxite, st sternite, tl telopodite. Scale=1 mm

Fig. 3 Characters of telopodite of the posterior gonopod. a Poecilocricus itacarambiensis sp. nov., showing the external branch bifurcated in two short branches, character 38 (2), projections on femoral base, character 37 (1) and solenomere lanceolated; b Anadenobolus sp. showing external branch lamellated, character 38 (0) and solenomere thin and long; c, Argentocricus subtriangularis, showing external branch digitiform, character 38 (1). eb external branch, fb femoral base, sl solenomere. Scale=1 mm

Fig.4 The most parsimonious tree (black square=exclusive synapomorphies, white square=homoplasious synapomorphies). Capital letters indicate clades discussed in the text. Bremer values: numbers below the character state in parentheses

Fig. 7 Poecilocricus mata- raca sp. nov., male holotype (CZUFMT 1804) a–f. a anterior body rings, lateral view; b anterior body rings, ventral view; c posterior body rings, lateral view; d left posterior gonopod, anterior view; e anterior gonopod, anterior view; f anterior gonopod, posterior view. b bulge, cxt coxite, ob outer branch, ep epiproct, ib inner branch, lob lobe, pr parap- roct, sl solenomere, st sternite, tl telopodite. Scale=1 mm