Morfologiska data för Callinectes larvatus
Bestämningsnycklar
Main Ref. Tavares, M., 2003
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Lateral kroppsform
Tvärsnitt
Dorsal profil av huvudet
Ögontyp
Typ av mun/snyte
Munnens placering
Diagnos Carapace slightly more than twice as broad as long; 9 teeth on arched anterolateral margin (outer orbital tooth and strong lateral spine included), second to eighth usually trending forward, without shoulders, anterior margins concave except first 2; front (excluding outer orbital angles) bearing 4 teeth, inner pair small but definitely formed. Anterior half of convex dorsal surface coarsely granulate, variably finer and more numerous granules on posterior on posterior part and in transverse lines; central trapezoidal (metagastric) area short and wide (anterior width about 2.4 times, posterior width about 1.5 times length). Pincers dissimilar, ridged longitudinally, fingers compressed but broadened dorsoventrally producing pointed spatulate shape; fifth legs flattened in form fifth legs flattened in form of paddles. Male with T-shaped abdomen reaching slightly beyond suture between thoracic sternites 4 and 5, sixth segment nearly parallel-sided but broadened proximally; first pleopods short, reaching about midlength of sternite 7, approximately each other or occasionally overlapping at level of abrupt curve beyond which short terminal part tapers to rather sharp tip; armed with minute scattered retrogressive spinules distally. Color: carapace brown with areas of bluish black. Chelae brown above; fingers dark on external face except for tips and proximal portion, internal face dark in distal 2/3; dark color of fingers retained in preservation.
Ease of Identification

Meristiska karaktäristika för Callinectes larvatus

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Ryggkotor
preanal
totalt

Fenor

Ryggfena/fenor

Egenskaper
Antal fenor
Antal småfenor ryggfena   
Ventral  
Totalt antal hårda fenstrålar
Totalt antal mjuka fenstrålar
Fettfena

Stjärtfena

Egenskaper

Analfena/fenor

Antal fenor
Totalt antal hårda fenstrålar
Totalt antal mjuka fenstrålar

Pariga fenor

Bröstfena Egenskaper  
Fenstrålar hårda     
Fenstrålar mjuka   
Bukfenor Egenskaper  
Position    
Fenstrålar hårda     
Fenstrålar mjuka   
Main Ref. (t.ex. 9948)
Ordlista (t.ex. cnidaria)
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