Taxonomic review of the genus Erythrocricus Schubart, 1962 (Diplopoda, Spirobolida, Rhinocricidae) Author Rodrigues, Patrícia Elesbão Silva 7D9151AF-4A51-4D87-9057-991DC2E966D3 0000-0003-4448-3940 Laboratório de Diversidade e Sistemática de Arachnida - LaDiSA, Programa de Pós-Graduação em Biologia, Universidade do Vale do Rio dos Sinos. Avenida Unisinos 950, 93022 - 000 São Leopoldo, RS, Brazil. patiesilva@yahoo.com.br Author Rodrigues, Everton Nei Lopes 9288C215-D60B-431E-86EA-541066F82169 0000-0002-9814-0954 Laboratório de Diversidade e Sistemática de Arachnida - LaDiSA, Programa de Pós-Graduação em Biologia, Universidade do Vale do Rio dos Sinos. Avenida Unisinos 950, 93022 - 000 São Leopoldo, RS, Brazil. enlrodrigues@unisinos.br text European Journal of Taxonomy 2021 2021-05-11 748 177 187 http://dx.doi.org/10.5852/ejt.2021.748.1353 journal article 10.5852/ejt.2021.748.1353 150a4a05-d154-47f3-b03d-b7b358ab5320 2118-9773 4770266 02CCCA41-C04A-4623-BA18-34D11AFFFE56 Erythrocricus sanguineostriatus ( Schubart, 1962 ) Figs 1–3 Rhinocricus ( Erythrocricus ) sanguineostriatus Schubart, 1962: 70 , figs 1, 2, 4. Rhinocrinus ( Erythocricus ) sanguineostriatus Marek et al . 2003: 72 . Erythrocricus miniatostriatus Schubart, 1962: 71 , figs 3, 5. Syn. nov. Justification of synonymy Schubart (1962) described two species, Erythrocricus sanguineostriatus and E. miniatostriatus , both similar in body pattern and gonopods structure. Despite the similarities, both species present variations in Fig. 1. Erythrocricus sanguineostriatus ( Schubart, 1962 ) , ♂ (MCN 406). A . Head. B . Anterior body rings, lateral view. C . Anterior body rings, ventral view. D . Posterior body rings, dorsal view. E . Midbody rings, lateral view. F . Posterior body rings and telson, lateral view. Scale bars = 1 mm. the red coloration on body rings wich in E. sanguineostriatus is present dorsally and in E . miniatostriatus dorsally and ventrolaterally. Our examination of the type species revealed that there is no significant difference either in external morphology or the structure of the gonopods between the species. Still, during examination of fresh specimens, we observed that the differences in the red coloration, seems to reflect only intraspecific variation. Diagnosis Erythrocricus sanguineostriatus ( Schubart, 1962 ) resembles E. electrofasciatus ( Schubart, 1957 ) comb. nov. by the shape of the anterior gonopod ( Figs 2A , 5A ) with a triangular sternite having the medial portion distally rounded and the anterior gonopod wider than long but differs by the telopodite of the anterior gonopod with a reduced lobe in posterior view ( Fig. 2B ), and the red coloration presented as a transverse red line on all metazonites, collum and telson ( Fig. 1B, D–F ) and a rounded process of the coxae of leg pair 3 of the male ( Fig. 1C ). Fig. 2. Erythrocricus sanguineostriatus ( Schubart, 1962 ) , ♂ (MCN 406). A . Anterior gonopod, anterior view. B . Anterior gonopod, posterior view. C . Left posterior gonopod, anterior view. Scale bars = 1 mm. Material examined Holotype BRAZIL1 ♂ ; São Paulo , Presidente Epitácio ; 52º06′56″ W , 21º45′48″ S ; 22 January 1950 , O. Schubart leg.; MZSP 2039 . Paratypes BRAZIL1 ♂ , 1 ♀ ; Goiás , Santa Helena de Goiás ; 50°35′18″ W , 17°49′23″ S ; Nov.1960 , G.A. Oliveira leg.; MZSP 2114 . Other material BRAZIL1 ♂ ; Goiás , Jataí ; 51º42′52″ W , 17º52′53″ S ; Jan. 1955 ; M. Carreira leg.; MZSP2038 1 ♀ ; Aragarças ; 52º15′03″ W , 15º53′51″ S ; 18 Jun. 1952 ; H. Sick leg.; MZSP1153 2 ♂♂ , 1 ♀ ; Minaçu , Usina Hidrelétrica Serra da Mesa ; 48º13′12″ W , 13º31′59″ S ; 1–10 Oct. 1990 ; A.B. Bonaldo and L.A. Moura leg.; MCN406 . Fig. 3. Erythrocricus sanguineostriatus ( Schubart, 1962 ) , ♀ (MCN 406). A . Head and anterior body rings, lateral view. B . Head and anterior body rings, ventral view. C . Posterior body rings, dorsal view. D . Posterior body rings and telson, lateral view. Scale bars = 1 mm. Redescription Male (MCN 406) MEASUREMENTS. With 52p+1a+T. Total length 55.0 mm, maximum width of midbody body rings 5.1 mm . COLORATION (in 70% alcohol) ( Fig. 1 ). Antennae and legs dark brown. Collum red with yellowish margins. Prozonites grey; metazonites in dorsal portion with transverse red line on all body rings, posterior margins whitish. Telson red. HEAD AND BODY RINGS ( Fig. 1 ). Antennae with numerous apical sensory cones. Collum rounded laterally. Tegument smooth, without setae. Ozopores starting from 6 th ring. Scobinae starting from 7 th ring, semicircular and small. LEGS ( Fig. 1C ). Coxae of leg pairs 3–5 of male expanded into a process. Coxae of leg pair 3 rounded. TELSON (Fig. F). Epiproct short, not extended over paraprocts. Hypoproct subtriangular. GONOPODS ( Fig. 2 ). Anterior gonopod wider than long, sternite triangular, medial portion with rounded apex. Sternite as long as coxite and shorter than telopodite ( Fig. 2A ). Coxite rounded, in posterior view with margins projected medially. Telopodite thickened with reduced distal lobe ( Fig. 2B ). Posterior gonopod distally bifid. External branch laminated and folded over solenomere. Solenomere long and thin ( Fig. 2C ). Female (MCN 406) Coloration ( Fig. 3 ) as in male, with 52p+T. Total length 56.0 mm. Width 5.2 mm . Distribution Known from Presidente Epitácio, state of São Paulo, and Santa Helena de Goiás, Minaçu, Aragarças, state of Goiás.