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Morphology Summary - Pycnosomia asterophila
Morphology data of Pycnosomia asterophila
Identification keys
Main Ref. Child, C.A., 1998
Appearance refers to

Sex attributes

specialized organs
different appearance
different colors
remarks

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 Moderately small, leg span about 15 mm. Trunk segmentation varies, processes separated by 0.3 - 0.7 of their width, little longer than their width, armed dorsally and distally with 4 - 8 short spines. Neck extending very little anterior to proboscis insertion, ocular tubercle low, at extreme anterior of neck, eyes well defined. Proboscis long, slender, about length of first two trunk segments, bottle-shaped, with long distal bottle neck, tapering at mouth. Abdomen moderately long, extending just beyond first coxae of fourth leg pair. Chelifores slender, short, only about half proboscis length, chelae tiny, with functional fingers. Palps lacking. Ovigers of 6 segments, Anoplodatylus-like, with few short setae. Legs of moderate length, with few short setae. Male femoral cement gland with row of minute pores along dorsal surface. Tarsus very short, propodus robust, with one conspicuous heel spine, few tiny sole spines, robust claw very curved distally, auxiliaries lacking. Female sex pore on prominent ventrodistal tubercle of all second coxae (Ref. 9).
Ease of Identification

Meristic characteristics of Pycnosomia asterophila

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
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

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

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
spines     
soft-rays   
Pelvics Attributes  
Position    
spines     
soft-rays   
Main Ref. (e.g. 9948)
Glossary (e.g. cnidaria)
Comments & Corrections
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