Morphology Summary - Scyllarus pygmaeus
Morfologiska data för Scyllarus pygmaeus
Bestämningsnycklar
Main Ref. Holthuis, L.B., 1991
Utseende refererar till

Könskaraktärer

specialiserade organ
annat utseende
andra färger
Anmärkningar

Karaktäristiska egenskaper hos juveniler och adulter

Särskilt slående egenskaper
Lateral kroppsform
Tvärsnitt
Dorsal profil av huvudet
Ögontyp
Typ av mun/snyte
Munnens placering
Diagnos Carapace with three distinct acute teeth in the median line before the cervical groove (the gastric, pregastric and rostral teeth). Region between the postrostral and branchial carinae with only few tubercles and with extensive smooth areas. Abdomen without a sharp elevated median longitudinal carina, but each abdominal somites 2 to 5 with an elongate lobulate figure in the middle. The exposed part of the abdominal somites 2 to 5 with an arborescent arrangement of very narrow grooves. Somite 1 with a complete transverse groove, behind which there are numerous short longitudinal grooves that may be rather irregular in shape and sometimes are interconnected by transverse grooves; this posterior part of somite 1 is no longer in the middle than laterally. The smooth anterior half of abdominal somites 2 to 6 (i.e., the part that disappears under the tergum of the previous somite when the abdomen is fully stretched) on either side with a short transverse groove in which hairs are implanted. Fourth segment of antenna with a single oblique median carina. Outer margin of the segment with 2, the inner margin with 3 or 4 teeth (not including the apical tooth). Thoracic sternum anteriorly U-shapedly incised in the middle. A blunt and low but conical tubercle on the last thoracic sternite. Dactyli of legs without fringes of hair. Colour: pale brownish or pinkish with patches of darker hairs. Two dark spots on the dorsal face of the first abdominal somite in the sibmedian region (Ref. 4).
Ease of Identification

Meristiska karaktäristika för Scyllarus pygmaeus

Sidolinjer avbruten: No
Fjäll längs sidolinje
Porbärande fjäll längs sidolinje
Fjäll i lateralserie
Antal rader fjäll ovan sidolinje
Antal rader fjäll under sidolinje
Fjäll runt stjärtfensspole
Skäggtömmar
Gälspringor (endast hos hajar/rockor)
Gälräfständer
på undre del av gälbåge
på övre del av gälbåge
totalt
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   
Ref. [ e.g. 3742]
Glossary [ e.g. cnidaria]
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