Actaea nodulosa
Henderson,
1893 (Crab)
Organism information awaits expert curation
Image copyrights: Government of India
Organism information awaits expert curation
| Taxonomy | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Family: | Xanthidae |
Image copyrights: Government of India
Description
Size: Width 18 mm; length 14 mm
Medium sized crab with broadly oval carapace; 2/3 as long as wide and moderately convex in both the directions. Anterior three fourth of the carapace is divided into convex, regional lobules by deep, smooth, wide grooves. The lobules are studded with pearly tubercles and granules of different sizes. Symmetrically disposed, scattered clusters of long, whitish bristles are present on the regional lobules.
Front deflexed and very convex medially, appears deeply four lobed, owing to the outer corner of each lobe standing on orbital angle. The long antero-lateral sides of carapace sharply four-lobed, each lobe rasp-like, composed of one large and 2-3 small tubercles. Postero-lateral sides short and slightly concave. The posterior border of the carapace is bounded by two parallel rows formed of beaded granules; the inner row is broken in the middle. The starnum and under-surface of the carapace covered with bubble-like granules.
Exposed surfaces of the chelipeds and leg joints are closely and crisply granular; these granules are tubercular, pearly and those on the anterior edges of leg joints are spine-like; leg joints especially their upper edges are fringed with long, thick, whitish hairs and bristles. Fingers short, obtusely pointed, light brown in color, this brown color in male extended upto the middle of lower border of palms.
Size: Width 18 mm; length 14 mm
Medium sized crab with broadly oval carapace; 2/3 as long as wide and moderately convex in both the directions. Anterior three fourth of the carapace is divided into convex, regional lobules by deep, smooth, wide grooves. The lobules are studded with pearly tubercles and granules of different sizes. Symmetrically disposed, scattered clusters of long, whitish bristles are present on the regional lobules.
Front deflexed and very convex medially, appears deeply four lobed, owing to the outer corner of each lobe standing on orbital angle. The long antero-lateral sides of carapace sharply four-lobed, each lobe rasp-like, composed of one large and 2-3 small tubercles. Postero-lateral sides short and slightly concave. The posterior border of the carapace is bounded by two parallel rows formed of beaded granules; the inner row is broken in the middle. The starnum and under-surface of the carapace covered with bubble-like granules.
Exposed surfaces of the chelipeds and leg joints are closely and crisply granular; these granules are tubercular, pearly and those on the anterior edges of leg joints are spine-like; leg joints especially their upper edges are fringed with long, thick, whitish hairs and bristles. Fingers short, obtusely pointed, light brown in color, this brown color in male extended upto the middle of lower border of palms.
Synonym (s)
• Actaea nodulosa White, 1847
• Epiactaea nodulosa Serene, 1984
• Actaea nodulosa White, 1847
• Epiactaea nodulosa Serene, 1984
Common Name (s)
Economic Importance and Threats
Ecology
Biogeography
• West Coast, Malabar INDIA
• Andaman and Nicobar Islands, Andamans INDIA
• Persian Gulf
• SRI LANKA
• Red Sea
• MADAGASCAR
• MAURITIUS
• West Coast, Malabar INDIA
• Andaman and Nicobar Islands, Andamans INDIA
• Persian Gulf
• SRI LANKA
• Red Sea
• MADAGASCAR
• MAURITIUS
Literature Source(s)
- Serene, R (1984) Crustaces decapodes brachyoures de l'Ocean Indien occidental et de la Mer Rouge. Xanthoidea: Xanthidae et Trapeziidae Faune Tropicale 24 1-349 Available at - Zoological Abstracts-Madagascar(1-500)
- Deb, M (1989) Contribution to the study of Xanthidae: Actaeinae (Decapoda: Crustacea) of India Records of the Zoological Survey of India. Occasional Paper No. 117 ZSI, Calcutta 59 pp Available at - NIO, Goa
- Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
Page last updated on:2010-08-17
