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 on two sides and by the dorsopleural suture and dorsocentral region on the two others.
Dorsolum: the mesoscutum.
Dorsopleural suture: Diptera; the lateral suture between dorsal and pleurum from the humeri through the base of the wing: separates the mesonotum from the pleura.
Dorso-ventral: in a line from the upper to the lower surface.
Dorsulum: the mesonotum before the scutellum, with the wing sockets: also, specifically, the meso-scutellum.