Hendersonida, Cabezas, Patricia & Macpherson, Enrique, 2014

Cabezas, Patricia & Macpherson, Enrique, 2014, A new species of Paramunida Baba, 1988 from the Central Pacific Ocean and a new genus to accommodate P. granulata (Henderson, 1885), ZooKeys 425, pp. 15-32 : 20-21

Taxon classification Animalia Decapoda Munididae

Genus Hendersonida gen. n.

Type species.

Munida granulata Henderson, 1885; here designated and by monotypy.

Diagnosis.

Carapace as long as wide; dorsal surface granulose, with some scattered spines and small spinules with short uniramous setae and without transverse ridges; few and short setae along anterior branch of cervical groove; posterior margin with some spines; rostrum spiniform, upturned distally, larger and thicker than supraocular spines; supraocular spines small, clearly not reaching midlength of rostrum and falling short the end of corneae; margin between rostral and supraocular spines straight or slightly concave; anterolateral spines well developed situated at front near anterolateral angles, reaching the level between rostrum and supraocular spines; lateral margins with some spines. Eyes large, maximum corneal diameter about half distance between bases of anterolateral spines. Lateral margin of antennular article 1 with distal slender portion about half as long as proximal inflated portion, with 2 distal spines. Antennal peduncle with anterior prolongation of article 1 spiniform; article 2 with distomesial spine long, almost reaching end of anterior prolongation of article 1. P1-P4 long and slender, squamate; P2-P4 dactyli slender, curved and unarmed along flexor margin. Male gonopods only present on the second abdominal somites.

Etymology.

The generic name Hendersonida acknowledges the meaningful contributions of John Robertson Henderson (1863-1925) to the field of crustacean taxonomy. Gender: feminine.

Remarks.

The carapace dorsal surface devoid of distinct transverse ridges or striae, the rostral spine broad at base, the antennal peduncle with a well-developed anterior prolongation of article 1 and the male gonopods absent from the first abdominal link this new genus to Paramunida Baba, 1988. This close relationship has been confirmed by molecular evidence that have rendered this new genus as the sister group of Paramunida ( Cabezas et al. 2012, Cabezas and Chan 2014). Hendersonida gen. n. may be easily differentiated from Paramunida by having the dorsal surface of the carapace covered by granules and the distomesial spine of the antennal article 2 almost reaching the end of anterior prolongation of article 1. The genus contains one species.