Umalia trirufomaculata (Davie and Short, 1989) in India, with a note on the taxonomy of U. misakiensis (Sakai, 1937) (Decapoda: Brachyura: Raninidae)

Abstract

The rare raninid crab Umalia trirufomaculata (Davie and Short, 1989) is recorded from India for the first time. It is redescribed and compared at length with the related but poorly known U. misakiensis (Sakai, 1937) on the basis of a good series of specimens from the Philippines. Some of the supposed differences which have been documented between the two taxa (e.g., carapace proportions and features of the cheliped) are not valid; while new distinguishing characters associated with the male pleon and gonopods are observed.

Description of a new genus for <i>Cyrtorhina balabacensis</i> Serène, 1971,with notes on the Cyrtorhininae (Decapoda, Brachyura, Raninidae)

“…1A) but we are not sure if this is a constant character. In another raninid, Umalia trirufomaculata (Davie & Short, 1989), the carapace shape was shown to vary substantially, even within one sex (Ng et al, 2019). In F. balabacensis the ornamentation on the anterior half of the carapace is also relatively denser in females (Figs.…”