epistome


Also found in: Dictionary, Medical, Wikipedia.

epistome

[′ep·ə‚stōm]
(invertebrate zoology)
The area between the mouth and the second antennae in crustaceans.
The plate covering this region.
The area between the labrum and the epicranium in many insects.
A flap covering the mouth of certain bryozoans.
The area just above the labrum in certain dipterans.
Mentioned in ?
References in periodicals archive ?
For example, the ocular area becomes broadened with increasing width of the carapace; the subocular plate and the epistome are gradually projected forward and the eyestalks degenerate.
shapes of epistome, tritosternum, chelicerae and hypostomal setae), the genus Neodiscopoma is treated as a species group within the genus Uropoda, as the Uropoda splendida group.
Cephalothorax: carapace: small epistome present; one pair of small eyes present; with 4 setae on anterior margin and 4 setae on posterior margin.
98 times longer than broad; small epistome present; one pair of small eyes present; with 4 setae on anterior margin and 4 setae on posterior margin.
03 times longer than broad; very small epistome present; one pair of small eyes present; with 4 setae on anterior margin and 2 setae on posterior margin.