In medical entomology, a vector is an arthropod which carries disease producing organisms (bacteria, virus, filarial worms) to a vertebrate host. For example, several species of Culicidae are vectors for malaria.
The side of the fly that we would indicate as 'the belly' in human terms. On practice this means the side where the mouth is positioned an where the legs are placed.
1. Located on the venter. For legs this means that these are considered as if they were in the position as given in the illustration. So, even if a leg is pointing upwards in a specimen, one should image that the leg was positioned in a horizontal plane, perpendicular to the body axis.
2. Located in a more position towards the venter. For example, a seta can be located ventral to another seta.
A broad stripe, most often used while describing longitudinal bands on the thorax but can be used for the abdomen and head, when it mostly will be used to describe a cross-band.
E.g.: "Presutural area of scutum with irregular dark brown vittae on lateral margin -Oestrophasia (Cenosoma) sabroskyi."
A free multilingual encyclopaedia. Many of the Diptera pages (best accessed through 'flies') are written by or with the help of authorities. The sites vary in quality but constantly improve. Some pages are technical, others are general. Often the German, Dutch or French versions are better than the English language page but the sites slowly merge as cross translation proceeds. A wiki stub is a page with very litle information awaiting addition.