proctodeal
/ˌprɒktə(ʊ)ˈdiːəl/(also proctodaeal)
adjective
1 Zoology and Embryology. Of or relating to the proctodeum.
2 Entomology. Among social insects: of or relating to the feeding of an insect from the hindgut of another.
Origin
Late 19th century; earliest use found in Quarterly Journal of Microscopical Science. From proctodeum + -al.