tarsal
claws are divergent when they spread out only a little; divaricate
when they separate widely.

Diverse: unequal: differing in size or shape: of various kinds.

Diverticulum -la: an oft-shoot from a vessel or from the alimentary
canal usually blind or sac-like: applied to the caecal tubes or
pouches: any extensions or evaginations of the hypodermic.

Dividens (vena): Trichoptera; 1st anal (Comst.).

Dog-ear marks: in bees: small, subtriangular marks of light color,
just below the antennae (Cockerell).

Dolabriform: hatchet-shaped: compressed, with a prominent dilated
keel and cylindrical base.

Dolioloides: applied to obtect or coarctate pupae.

Dominant: a character more constant and conspicuous than any
other: a type or series occurring in large numbers both as to genera,
species and individuals and in which differentiation is yet active.

Dorsad: extending or directed toward the upper side.

Dorsal: of or belonging to the upper surface: in Diptera, that face of
the laterally extended legs visible from above.

Dorsal bristles: see dorso-central.

Dorsal diaphragm: the wings of the heart, or the very thin membrane
upon which these muscles rest: = pericardial diaphragm, q.v.

Dorsal gland orifices: in Diaspinae, oval orifices arranged in more or
less distinct rows on the surface of the pygidium, through which is
discharged the material of which the dorsal scale is formed.

Dorsal glands: see last preceding title.

Dorsal line: in caterpillars, extends longitudinally on the middle of the
back or dorsal.

Dorsal scale: that part of the covering scale of the Diaspinae that lies
above the insect, as opposed to the ventral scale, which lies below.

Dorsal space: in slug-caterpillars is the area between the sub-dorsal
ridges.

Dorsal vessel: the heart; q.v.

Dorsi-meson: the middle of the upper surface.

Dorso-alar region: Diptera; between the transverse suture and the
scutellum on one side and the root of the wing and the dorso-central
region on the other.

Dorso-central bristles: Diptera; two or four longitudinal rows on the
inner part of the dorsal.

Dorso-central region: Diptera; bounded by two imaginary lines drawn
from the scutellar bridges forward, and coinciding with a space free
from bristles that exists on the outer side of the dorsal rows and is
often occupied by a dorsal thoracic stripe.

Dorso-humeral region: Diptera; bounded by the anterior end of thorax
and transverse suture