SELO/ eg ving) 
ere ee 
aA 
United States B 
|} Department of i 
) eee Adult Scabies 
Animal and Plant M sal 
Health Inspectio ites - 
Service # 
i 
ae 63} Comparative Features 
é Sarcoptes 
e Body—Rounded, short, backward projecting spines 
on dorsum 
e Mouthparts—Blunt 
e Pedicels (leg stalks)—Long and unjointed; third and forth 
pair of legs do not usually extend 
beyond rim of bod 
¢ Sucker disks cone u 
Female: on legs 1 and 2 
Male: on legs 1, 2 and 4 
e Maximum size 
Female: about 0.50mm 
Male: about 0.30mm 
INIAyw, 
Chorioptes 
e Body—Oval, compressed laterally 
e Mouthparts—Blunt 
e Pedicels (leg stalks) —Short and ey third pair-of 
legs extend from the indentation in 
meme” wall _ i 
e Sucker disks =~ 
Female: on legs 1, 2 angi = = 
Male: on legs 1, 2, 3 and-4 ™ a 
e Maximum size 
Female: about 0.40mm 
Male: about 0.35mm 
Psoroptes 
e Body—Oval 
e Mouthparts—Sharp, piercing, and elongated 
e Pedicels (leg stalks)—Long and jointed 
e Sucker disks 
Female: on legs 1, 2 and 4 
Male: on legs 1,2 and3 
e Maximum size 
Female: about 0.80mm 
Male: about 0.70mm 
1 ae 
is eee 
(mouth parts, pedicels and suckers) 0 ee 
