Definitions For Glossary Terms



DECUMBENT
Often used as a synonym of adpressed, but simply meaning to project out at an angle from a structure and then bent back toward the structure (compare with erect).
DELTOID
Elongate triangular.
DIGITAL SPINES
One or more curved spines at the apex of the volsella (see also digitus). [drawing][photo]
DIGITATE LABRUM
Labrum that is deeply emarginate so as to appear finger-like.
DIGITUS
Apically differentiated region of the volsella, which usually bears digital spines. [drawing][photo]
DISC
Membranous region of the forewing beyond the basal cell. [drawing]
DISCRIMEN
Median, longitudinal sulcus on the ventral surface of the mesothorax, which is terminated posteriorly by the mesofurcal pit and is external indication of an invaginated phragma. [photo][photo]
DISTAL / DISTAD    See apical / apex
DORSAL / DORSAD
At or toward the top or upper surface of the body or structure (above). [drawing]
DORSAL APERTURE OF THE PHALLOBASE
Opening on the anterodorsal surface of the phallobase through which the aedeagus is inserted through the male genital capsule. [photo]
DORSAL EXPANSION OF GONOBASE     See dorsal lamina
DORSAL LAMINA
Posterodorsal surface of the phallobase posterior to the dorsal aperture of the phallobase. [photo]
DORSELLUM
The central, usually convex median portion of the metanotum that is differentiated from the more concave lateral panel of the metanotum. [drawing][photo]
DORSO-
Prefix meaning toward the top or upper surface of a structure, e.g. dorsolateral. [drawing]