Calcinus tibicen (Herbst, 1791)

Nucci, Paulo Ricardo & Melo, Gustavo Augusto Schmidt De, 2015, Hermit crabs from Brazil: Family Diogenidae (Crustacea: Decapoda: Paguroidea), except Paguristes, Zootaxa 3947 (3), pp. 327-346 : 329

Calcinus tibicen (Herbst, 1791)

( Figs 1 B, 5B)

Cancer tibicen Herbst, 1791: 25 , pl. 23, fig. 7.

Pagurus tibicen .— Bosc, 1802: 78.

Pagurus sulcatus H. Milne Edwards, 1836: 279 ; 1848: 64.

Calcinus sulcatus .— Smith, 1869: 17, 39.— Rathbun, 1900: 144.— Benedict, 1901a: 141, pl. 5, figs 3, 3a.— Moreira, 1901: 27, 86.— Verrill, 1908: 439, figs 56, 57, pl. 28, fig. 7.

Calcinus tibicen Rankin, 1900: 533 , pl. 17, fig. 1.— Schmitt, 1935: 198, figs 60a, b.— Provenzano, 1959: 363, fig. 4; 1960: 120; 1961: 152.— Forest & Saint Laurent, 1968: 106.— Narchi & Hebling, 1972: 67, fig. 1.—Sánchez & Campos, 1978: 22, fig. 5.— Coelho & Ramos-Porto, 1986: 52.— Campos & Lemaitre, 1994: 147, figs 1c–4c, 5d, 6c, 7c, f, i.— Rieger, 1998: 422.— Melo, 1999: 42, fig. 2.—McLaughlin et al., 2010: 19.

Material examined. Brazil: Paraíba—Ponta Verde, 1 spec. (MZUSP-13360); 3 spec. (MZUSP-13330). Bahia— Abrolhos, Ilha Redonda, 7 spec. (MZUSP-7028). Espírito Santo—Santa Cruz, 4 spec. (MZUSP-8829); 22 spec. (MZUSP-8831). Rio de Janeiro—Cabo Frio, 1 spec. (MZUSP-8646); Rio das Ostras, Ilha das Pombas, 2 spec. (MZUSP-8830); Praia de Itaipú, 2 spec. (MZUSP-8666); Ilha Galeta, 3 spec. (MZUSP-12417). São Paulo— Ubatuba, 1 spec. (MZUSP-9439); São Sebastião, Saco Grande, 13 spec. (MZUSP-12995); 3 spec. (MZUSP- 12991); Guarujá, Praia Branca, 1 spec. (MZUSP-13339). Santa Catarina—Praia da Armação, 5 spec. (MZUSP- 9431).

Diagnosis. Shield longer than broad, smooth, slightly convex; rostrum triangular; anterior margins straight, between rostrum and lateral projections. Ocular peduncles slightly shorter than shield; scales with strong spine distally, occasionally bifid or trifid. Chelipeds unequal, left larger than right; both smooth, without setae. Ambulatory legs each with dactyl shorter than propodus; propodus of third pereopods with longitudinal furrow on dorsolateral region; merus of second pereopod flattened laterally; merus of third pereopod convex laterally. Telson approximately rectangular with left lobe slightly larger than right, each usually with 1 submarginal spine; lateral and terminal margins with long setae.

Distribution. Western Atlantic—Bermuda, Florida, Gulf of Mexico, Antilles, Panama, Colombia, Venezuela and Brazil (Fernando de Noronha and from Ceará to Santa Catarina).

Remarks. The genus Calcinus is most speciose in the Indo-Pacific region. In the Western Atlantic this genus is represented by three species of which only C. tibicen occurs in Brazil. Morphologically, C. tibicen is close to C. verrilli , endemic to Bermuda.

Figures

FIGURE 1. Shield and cephalic region: A, Areopaguristes iris; B, Calcinus tibicen; C, Cancelus ornatus; D, Clibanarius antillensis.