Morphology data of Ammothea acheliata
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 Small species with leg span of only about 0.14 cm. Trunk segmented, without large cowls or dorsomedian tubercles at posterior segmentation lines. Lateral processes like the size of their diameters, separated by less than their diameters, armed with 1 - 3 short dorsodistal or dorsal spines. Ocular tubercle low, shorter than basal diameter, eyes large, prominent, darkly pigmented. Abdomen short, blunt, without distal extension or rounded tubercle, not as long as fourth lateral processes, armed with 3 - 4 short distal spines. Proboscis ovoid, longer than trunk width, about half trunk length, without constrictions. Chelifores entirely lacking. Palps 9 segmented, fourth segment longest, longer than second, first and third short, sub equal. Distal 4 short segments carried anaxially on curved fifth segment, hook-shaped, without ventral extensions or tubercles, moderately setose ventrally and distally. Most setae as long as segment diameters. Oviger 10 segmented, third segment shorter than fourth or fifth which are sub equal in length. Sixth segment with many short spines, seventh placed anaxially on sixth, with lateral apophysis bearing 5 - 6 long spines. Eighth, ninth, and tenth segments each smaller than last, armed with small denticulate spines in formula 1: 1: 2, each with many lateral denticles. Legs long and slender, armed with very few short setae or spines except distal segments. Second tibiae the longest segments. Femoral cement gland small, opening a single small dorsodistal pore at about 0.75 femoral length. Tarsus short, without heel spines. Propodi homogenous in anterior posterior members, short, well curved, sole with three major heel spines, one or two slightly smaller proximal heel spines, and 6 - 7 small sole spines. Claw robust, short, well curved distally, auxiliary claws long, about 0.6 main claw length. Female characters unknown (Ref. 9).
Ease of Identification easy to distinguish from other species.

Meristic characteristics of Ammothea acheliata

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   
Ref. [ e.g. 3742]
Glossary [ e.g. cnidaria]
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