Phylogeny of Calyptraeotheres Campos, 1990 (Crustacea, Decapoda, Brachyura, Pinnotheridae) with the description of C. pepeluisi new species from the tropical Mexican Pacific

Abstract

A reassessment of the adult and larval morphology as well as comparison with published molecular information confirms the monophyly of the genus Calyptraeotheres Campos, 1990, and its relationship with Dissodactylus Smith, 1870, Clypeasterophilus Campos & Griffith, 1990 and Tumidotheres Campos, 1990. Calyptraeotheres pepeluisi new species, is described from Michoacán, Mexico on the basis of a female specimen. The new species is distinguished from the other nominal species of the genus by having a subarcuate carapace with longer setae on its front and anterolateral margin, the eyes are dorsally visible, and a third maxilliped with a 2-segmented palp and a conical propodus.

Phylogeny, phylogeography, and systematics of the American pea crab genusCalyptraeotheres Campos, 1990, inferred from molecular markers

“…Understanding the systematics of this family has been the aim of many studies, which have generally been based on comparative morphology (e.g. Griffith, ; Manning & Felder, ; Marques & Pohle, ; Ahyong & Ng, ; Campos, ; Campos & Hernández‐Ávila, ) and more recently have included molecular data (Harrison, ; Harrison & Hanley, ; Palacios‐Theil et al ., ).…”

“…Calyptraeotheres Campos, 1990, is an American genus belonging to Pinnotheridae, in which all members are obligatory symbionts of slipper limpets of the family Calyptraeidae (Campos, ). Within this genus, composed of five species (see Campos & Hernández‐Ávila, ), Calyptraeotheres garthi (Fenucci, ) is distributed from the San Matias Gulf in Argentina to the coast of Rio Grande do Sul in southern Brazil (Martins & D'Incao, ), where it lives in symbiotic association with almost all naturally occurring limpets of the Calyptraeidae family (Ocampo et al ., ). Calyptraeotheres politus (Smith, 1870) is found along the south‐eastern Pacific coast, living in limpets of the genera Crepipatella and Calyptraea (Campos, ).…”

“…Calyptraeotheres hernandezi Hernández‐Ávila & Campos, and Calyptraeotheres granti (Glassell, 1933) establish symbiosis with limpets of the genus Crucibulum , and are present on Cubagua Island, Venezuela, and in the Mexican Pacific, respectively. Finally, Calyptraeotheres pepeluisi Campos & Hernández‐Ávila, was described from a single female specimen found in Michoacán, on the Pacific coast of Mexico (Campos & Hernández‐Ávila, ).…”

Morphology of the Complete Larval Development of the Pinnotherid Crab Sakaina Yokoyai (Glassell, 1933) (Decapoda, Brachyura)

“…A phylogenetic study based on the corrected zoeal data matrix of Marques & Pohle (1995) confirmed sister-group relationships between Sakaina and Parapinnixa (cf. Campos & Hernández-Ávila, 2010). In the cladograms mentioned, the genus Asthenognathus represents a basal taxon (Pohle & Marques, 1998) or is used as the outgroup (Campos & Hernández-Ávila, 2010).…”

“…Campos & Hernández-Ávila, 2010). In the cladograms mentioned, the genus Asthenognathus represents a basal taxon (Pohle & Marques, 1998) or is used as the outgroup (Campos & Hernández-Ávila, 2010).…”