Diptera.info

vector

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.
Links: http://en.wikiped...biology%29.

venter

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.
Adjective: ventral

.
Opposite: dorsum header=[dorsum] body=[The side if the fly that we would indicate as 'the back' in human terms. In practice this means the side where the wings are placed (or would have been placed if the insect is apterous). 
Adjective: dorsal. 
Opposite: venter. <img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

header=[dorsum] body=[The side if the fly that we would indicate as 'the back' in human terms. In practice this means the side where the wings are placed (or would have been placed if the insect is apterous).<br />
Adjective: dorsal.<br />
Opposite: venter.<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

ventral

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

header=[seta] body=[Plural: setae. Structure on the surface of the insect body, often referred to as hairs or bristles. A seta may easily be lost but has a prominent socket (alveolus) which is raised on one side if the seta is slanted. Setae are usually connected to nerves and have a sensory function.<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

can be located ventral to another seta.

Opposite: dorsal

header=[dorsal] body=[1. Located on the dorsum. 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.<br />
<br />
2. Located in a more position towards the dorsum. For example, a seta can be located dorsal to another seta.<br />
<br />
Opposite: ventral.<br /><img src='http://www.diptera.info/images/orientation.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

ventrite

The ventral surface of one of the body segments. An old term
and now considered synonym of sternite header=[sternite] body=[The Glossary contains no matching items. It may have been added using different lettering, so you can click the Term to check this. Otherwise, contact the Administrator to report this error. <img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

header=[sternite] body=[The Glossary contains no matching items.<br />It may have been added using different lettering,<br />so you can click the Term to check this.<br />Otherwise, contact the Administrator to report this error.<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

vertex

Quote from the Manual of Nearctic Diptera:

The median portion of the upper extremity of the head, bounded by the eyes latterally, the occiput posteriorly and the frons anteriorly, ...

Thus it becomes a rather roughly defined area you could call the posterodorsal margin of the head, in the middle of which you will find the (posterior part of) the ocellar triangle.

vitta

Plural: vittae.
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."

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