Abstract
Hendersonida parvirostrissp. nov. is described from Papua New Guinea. The new species can be distinguished from the only other species of the genus, H. granulata (Henderson, 1885), by the fewer spines on the dorsal carapace surface, the shape of the rostrum and supraocular spines, the antennal peduncles, and the length of the walking legs. Pairwise genetic distances estimated using the 16S rRNA and COI DNA gene fragments indicated high levels of sequence divergence between the new species and H. granulata. Phylogenetic analyses, however, recovered both species as sister species, supporting monophyly of the genus.
Highlights
Squat lobsters of the family Munididae Ahyong, Baba, Macpherson & Poore, 2010 are recognised by the trispinose or trilobate front, usually composed of a slender rostrum flanked by supraorbital spines (Ahyong et al 2010; Macpherson and Baba 2011)
Hendersonida parvirostris sp. nov. is described from Papua New Guinea
We demonstrate the existence of a new species of the formerly monotypic genus Hendersonida, based on morphology, molecular characters, and phylogenetic information
Summary
Squat lobsters of the family Munididae Ahyong, Baba, Macpherson & Poore, 2010 are recognised by the trispinose or trilobate front, usually composed of a slender rostrum flanked by supraorbital spines (Ahyong et al 2010; Macpherson and Baba 2011). More than 400 species distributed in the Atlantic, Indian, and Pacific oceans, from the coastal area to the abyssal plain (Baba et al 2008; Schnabel et al 2011) Among these genera, the genus Paramunida Baba, 1988 was proposed based on the presence of spinules or granules densely covering the carapace dorsally (rather than transverse ridges), the short undeveloped rostrum, the antennal peduncle with a well-developed anterior prolongation of article 1, and the absence of the first pair of male gonopods (Baba 1988). They can be morphologically differentiated by differences in the spinulation of the carapace and the length of the distomesial spine of the antennal article 2 (Cabezas and Macpherson 2014)
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