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The rare pilumnoid crab, Dentoxanthus iranicus Stephensen, 1946 (Galenidae), is recorded from Gujarat state in India for the first time. Originally described from a small female (Gulf of Oman), and subsequently reported twice from Pakistan on the basis of two males and a female, the species is not well known and has never been described to modern standards. On the basis of the present male specimen from India, as well as a previously unreported male specimen from Pakistan, the species is redescribed and its systematics discussed.
Selwynia, is regarded as a senior subjective synonym of Aphanodactylus (Crustacea: Brachyura: Pinnotheroidea: Aphanodactylidae). This synonymy does not affect the family name Aphanodactylidae. A diagnosis is provided for Selwynia laevis and this species is re-described.
The Singapore freshwater crab Johora singaporensis is known only from three streams in Singapore and is among the top 100 most threatened species in the world. It is the only member of the genus Johora, endemic to the Malay Peninsula, to be categorized as Critically Endangered on the IUCN Red List. Extensive surveys conducted over 1 year to determine the extent of the species’ distribution revealed that the population has declined significantly at its type locality in Bukit Timah Nature Reserve, Singapore Island's oldest protected forest area. The species remains extant in two unprotected streams in Bukit Batok and Bukit Gombak, which are located outside the nature reserve. Acidification of streams as a result of acid precipitation may be a factor in the decline of the species. If so, this will be the first documented instance of a species being affected negatively by anthropogenic acidification of a tropical freshwater system. The occurrence of this threatened species in a protected area has not, therefore, guaranteed its survival. There is a need for long-term and continuous monitoring of species of high conservation value, together with other measures that focus on habitat protection. Conservation efforts by the National Parks Board of Singapore in collaboration with other government agencies are ongoing in an effort to ensure the survival of this important species.
A specimen of Cryptopodia echinosa (Decapoda: Brachyura: Parthenopidae) was collected from the subtidal area of the northern Oman Sea in 2009. A literature review on the distribution of this species revealed that this is the first record of this species from the Oman Sea. The morphological structures of this species are given in this article.
A new alien pilumnid, Actumnus globulus, is reported from the Mediterranean Sea, off Punta Ala, Italy. The species is known from the Red Sea and the East African coast. The opportunity is taken here to redescribe the adult morphology, illustrate it, and, for the first time, figure the male pleopod.
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