Infraanal flaps see paraproct

infrabasal a. [L. infra, underneath; basis, base] 1. Below a basal structure. 2. (ECHINOD: Crinoidea) Plates aboral to the basal plates.

infrabranchial a. [L. infra, underneath; branchiae, gills] Being below the gills.

infrabuccal cavity/chamber (ARTHRO: Insecta) A spheroidal sac beneath the floor of the mouth cavity that opens into the mouth by means of a short narrow canal, functioning in food storage.

infrabuccal slit (ARTHRO: Chelicerata) In Acari, the slit between the two lateral lips seen on the ventral surface of the infracapitulum.

infracalyptral setulae (ARTHRO: Insecta) In tachinid Diptera, fine, bristly hairs below the point of attachment of the ca-lypter (squamae).

infracapitular glands (ARTHRO: Chelicerata) In Acari, paired glands lying in the prosoma and emptying into the cervix.

infracapitulum n.; pl. -la [L. infra, underneath; capitulum, small head] (ARTHRO: Chelicerata) In Acari, part of the gnathosoma of mites, bearing lips and palpi and containing mouth and pharynx.

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