Investitus: unclothed: a surface without scales or hair.
Involucrate: = involute.
Involucrum alarum in Dermaptera a flap of the metanotum.
Involute: spirally rolled inwardly.
Involuti: butterflies whose larvae live in a folded leaf; Hesperidae.
Iridescent: a surface which reflects the prismatic hues.
Iridicolor: any color so broken up as to reflect the prismatic hues.
Iris: the circle which, in an ocellate spot surrounds the pupil.
Irised: with rainbow colors.
Iris-pigment: = iris tapetum.
Iris tapetum: the pigment layer of the compound eye just below the
crystalline cone.
Irregular: unequal, curved, bent or otherwise twisted or modified
without order or symmetry, e.g. certain antennae.
Irrorate: marked with minute points; freckled.
Isabelline -us: pale yellow with some red and brown [chronic lemon
with a little carmine and roman sepia].
Ischia: = pleura; q.v.
Iso-: equal.
Isolate: to separate out from others; occurring alone.
Isomers: that series of Coleoptera in which the tarsi have an equal
number of joints on all feet.
Isomerous: with equal number of tarsal joints on all
feet := homoeomerous.
Isomorphous: having the same form, appearance or construction.
Isopalpi: that series of Trichoptera in which the palpi of both sexes
have the same number of joints.
Isoptera: equal winged: an ordinal term for insects with four, similar,
net-veined wings; mouth mandibulate; thoracic rings similar, loosely
jointed metamorphosis incomplete: the Termitidae. {Scanner's note: In
modern nomenclature the Isoptera constitute the order of all termites;
the Termitidae are just one family within the Isoptera.}
Isotypical: a genus described from more than one species, all of which
are congeneric.
-itus: = -atus; q.v.
-ius: suffix; having the power or ability to.
J
Jabot: the crop; q.v.
Janthine: violet colored.
Jaw-capsule: contains the mouth structures in those dipterous larvae
in which the head is differentiated.
Johnston's organ: a complex nervous structure in the basal joint of
dipterous antennae.
Joint: a segment or part between two incisures: an articulation.
Jubate -us: fringed with long pendent hairs.
Juga: the lateral anterior lobes of the head of a Heteropteron; each
side of the tylo.
Jugatae: that series of Lepidoptera in which there is a jugum instead
of a frenulum to unite the wings in flight.
Jugular: of or pertaining to the throat.
Jugula
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