Morphology data of Achelia pribilofensis
Identification keys
Main Ref. Child, C.A., 1995
Appearance refers to

Sex attributes

specialized organs
different appearance
different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Diagnosis Trunk ovoid in dorsal view, lateral processes closely crowded, with tiny dorsodistal tubercles. Ocular tubercle conical, pointing anteriorly, eyes small, at base of tubercle. Proboscis massive, greatly swollen distally, less so proximally, lips flat. Abdomen moderately long, carried horizontally, bearing small conical dorsodistal tubercle. Chelifores moderately short, scape with narrowly conical dorsodistal tubercle, chelae oval, with endal fold denoting atrophied finger. Palps long, slender, heavily setose distally, distal segments 5-7 each with ventral projection. Ovigers large, segments 3-6 with many lateral setae, seventh with lateral bulge having many setae, strigilis segments small. Legs with many short dorsal spines, low dorsolateral tubercles on the first and third coxae, moderately long sex pore spur on posterior 4 second coxae, and modest dorsodistal tubercle on each femur. Propodus with 3 heel spines and many lateral and sole setae. Claw slender, auxiliaries about half main claw length (Ref. 2153, p. 7).
Ease of Identification likely to be confused with closely related species.

Meristic characteristics of Achelia pribilofensis

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary (e.g. cnidaria)
Entered by Dar, Christine
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