What's the best way to distinguish Necator americanus from Ancylostoma duodenale?

What's the best way to distinguish Necator americanus from Ancylostoma duodenale?

What's the best way to distinguish Necator americanus from Ancylostoma duodenale?








A. appearance of eggs
B. appearance of long buccal cavity
C. appearance of mouth parts
D. absence of genital groove
E. length of worm










Answer: C