Entomology definition of Intercalary -ies: additional or inserted between
others; as a vein: plural; added or supplementary longitudinal
wing reins: see under specific headings; i.e. anterior, etc.: in
Ephemerides, certain longitudinal veins between the 8th (anal)
and 9th (1st maxillary) and not branches of either: in Diptera,
the anterior intercalary (Loew) = the discoidal, and the
posterior intercalary = the cubitus 1 of Comstock: applied to an
evanescent sclerite in the embryo between antenna and mandible;
also termed premandibular.