Enterobius vermicularis

Pinworm has the broadest geographic range of any helminth, and is the most prevalent helminth infection in the USA and Western Europe. It is commonly found in school-aged children, though it is seen in adults as well.

Characteristics
Shape and Size
adult female is 8 to 13 mm long, and 0.5 mm thick.adult male is 2 to 5 mm long and 0.2 mm thick. Elongated, asymmetrical with one side flattened, other side convex.
Genome Information
E_vermicularis_Canary_Islands length : 150.051Mb, GC%: 33.2 GenBank assembly accession: GCA_000951215.1 http://www.ncbi.nlm.nih.gov/genome/8694
Food Source
consumption of raw or poorly cooked food
Pathological Factor
Infection is by ingestion of partially embryonated eggs.
Disease
enterobiasis
Symptoms
Itching of the anal or vaginal area, Insomnia, irritability and restlessness, Intermittent abdominal pain and nausea.
Affected Body Organs
ileum, cecum, appendix and proximal ascending colon. Female genital tract organs.

Classification
Kingdom Animalia
Phylum Nematoda
Class Secernentea
Subclass Spiruria
Order Oxyurida
Family Oxyuridae
Genus Enterobius
Species E. vermicularis