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Terms Infusion (Glossary) - v3.10

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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."

Date and time

13 December 2025 13:19

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John Carr

06.12.25 21:37

He last posted here in April, identifying some Chloropidae.

Sundew

04.12.25 20:02

Dr Michael von Tschirnhaus, a leading expert on Chloropidae and Agromyzidae, died on 16 September 2025 at the age of 86. He will be greatly missed by the international community. R.I.P.

nichilme

03.12.25 12:46

Anyone has the scan of "Harkness, R. D.; Ismay, J. W. 1976: A new species of Trachysiphonella (Dipt., Chloropidae) from Greece, associated with an ant Cataglyphis bicolor (F.) (Hym., Formicidae)

John Carr

01.12.25 22:29

I will try to fix the messages this month. We have to make some other configuration changes before software goes out of support at end of year.

rafael_carbonell

29.11.25 21:57

I would prefer not to receive any more messages from diptera.info signed by Paul... (Thread reply notification)... Could they be signed by ‘The diptera.info team’?

Nikita Vikhrev

19.11.25 12:31

It is with deepest sadness in my heart that I announce that on Saturday, November 15, one of the great minds of world dipterology, prof. Rudolf Rozkošny, left us forever. Please remember him with a

rvanderweele

15.08.25 10:15

For those specialists not active on Facebook, I just ask to consider to join our group on FB. Please, be aware that it is not necessary at all to be active on FB outside the diptera group. Actually, n

rvanderweele

15.08.25 10:13

We received requests to get permission to ask for ID in our Facebook group, https://www.facebo
ok.com/groups/1798
95332035235/ Until now we pointed to diptera.info, but since Paul's passing we not

Tony Irwin

23.06.25 18:10

If you have some spare money, there is a copy (together with keys to pupae and larvae) for sale by Hermann L. Strack, Loguivy Plougras, France

smol

23.06.25 11:18

Appreciate it, Tony Irwin! I got the hint to use the key next to Langton and Pinder key for females of Chironomidae. So no specific queries, except the keys... I will keep this on my list and hope th

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