Abstract
A new species of semi-terrestrial crab of the family Potamidae, Rathbunamon chumomrayense sp. nov. is described from Chu Mom Ray National Park, the Central Highlands of Vietnam. The new species can be distinguished from R. lacunifer (Rathbun, 1904), the only other species in the genus, by a suite of characters, including the slightly more rugose anterolateral regions, confluent epigastric and postorbital cristae that are sinuous, less convex anterolateral margins, relatively shorter fingers of the chelipeds, and the terminal segment of the male first gonopod being slightly curved outwards, with narrower dorsal flap.
Keywords: Crustacea, semi-terrestrial crabs, taxonomy
A new species of semi-terrestrial crab of the family Potamidae, Rathbunamon chumomrayense sp. nov. is described from Chu Mom Ray National Park, the Central Highlands of Vietnam. The new species can be distinguished from R. lacunifer (Rathbun, 1904), the only other species in the genus, by a suite of characters, including the slightly more rugose anterolateral regions, confluent epigastric and postorbital cristae that are sinuous, less convex anterolateral margins, relatively shorter fingers of the chelipeds, and the terminal segment of the male first gonopod being slightly curved outwards, with narrower dorsal flap.
Keywords: Crustacea, semi-terrestrial crabs, taxonomy
Introduction
The freshwater crabs of Vietnam are currently represented by 52 species, belonging to two families, Potamidae Ortmann, 1896 and Gecarcinucidae Rathbun, 1904 (Dang & Ho, 2012; Dang, Thai, & Pham, 1980; V.T. Do, 2014; V. T. Do, Le, & Nguyen, 2016; V. T. Do, Le, & Phan, 2015; V. T. Do, Shih, & Huang, 2016; Naruse, Nguyen Xuan, & Yeo, 2011; Ng & Yeo, 2001; Yeo & Ng, 1998; Yeo & Ng, 2007). Rathbunamon is a monotypic genus established by Ng (1996) with R. lacunifer (Rathbun, 1904) as the type species. A recent survey in the Central Highlands of Vietnam obtained two specimens which are here identified as a second species from this genus. The new species possesses the main generic characteristics of Rathbunamon. It appears to have a highly localized distribution and can be distinguished from its congener by a suite of morphological characteristics. |
| FIGURE 5. Rathbunamon chumomrayense sp. nov., on the forest ground in Chu Mom Ray National Park, Kon Tum Province, Vietnam. |
Taxonomy
Family Potamidae Ortmann, 1896
Subfamily Potamiscinae Ortmann, 1896 (sensu Yeo & Ng 2003)
Rathbunamon Ng, 1996
Rathbunamon chumomrayense sp. nov.
Etymology. The new species is named after the type locality, Chu Mom Ray.
Ecological notes. This species inhabits forested mountain areas. The larger specimen was found running around on the forest floor, far from the stream; however, the smaller specimen was found near the stream. It is believed that this species spends most of their time in the terrestrial environment
Van Tu Do, Van Dong Dang, Thi Kim T. Cao and Ngoc Khac Hoang. 2016. A New Species of Semi-Terrestrial Freshwater Crab (Crustacea: Decapoda: Brachyura: Potamidae) from the Central Highlands of Vietnam. Zootaxa. 4179(2); 279–287. DOI: 10.11646/zootaxa.4179.2.8
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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل
او
شاهد هذا الفيديو القصير لطريقة التحميل البسيطة
كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا
شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا
رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا
تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا
ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.
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