Part 42

Digitus: the terminal joint of the tarsus, bearing the claws: a small appendage attached to the lacinia of the maxilla; rarely present and probably tactile.

Digoneutism: the power to produce two broods in one season.

Dilatatus: Coleoptera a margin, when the sharp marginal edge extends beyond its usual limit: the base when the transverse diameter is much longer at one part.

Dilated: widened, expanded.

Dilation: an expansion or widening.

Dilute: thinned out: applied to color means weak or pale.

Dilution: much thinned out or diluted.

Dimera: forms with two-jointed tarsi: specifically applied to some groups of Homoptera.

Dimerous: having only two tarsal joints.

Dimidiate -us: halved; extending half way around; applied to elytra when they cover only half the abdomen.

Dimidius: of half length.

Dimorphic: occurring in two well-marked forms.

Dimorphism: a difference in form, color, etc, between individuals of the same species, characterizing two distinct types: may be seasonal, sexual or geographic.

Dioecious: with distinct sexes.

Dioptrate: an ocellate spot with the pupil divided by a transverse line.

Dioptric: with a transversely divided ocellus.

Diploglossata: an ordinal term proposed for Hemimeridae, because of the supposed presence of a second labial segment.

Diplogangliata: applied to the Arthropods.

Diploptera: = diplopteryga; q.v.

Diplopteryga: Hymenoptera; wasps in which the wings are longitudinally folded when at rest.

Dipneumones: having two lungs (certain spiders).

Diptera: an ordinal term applied to insects having only one pair of wings (anterior): thorax agglutinate; mouth haustellate; transformations complete.

Dipterocecidium: a gall formed by a dipterous insect.

Dipterous: belonging to or having the characters of Diptera.

Direct: applied to metamorphosis = incomplete.

Directive coloration: directive marks or colors which tend to divert the attention of an enemy from more vital parts.

Disc: see disk.

Discal: on or relating to the disc of any surface or structure.