Diptera.info

tergite

From tergal meaning 'dorsal'.
In Diptera the upper (dorsal) sclerite of an abdominal segment.

In descriptions and keys tergites are numbered (from the base of the abdomen starting at 1) and often abbreviated. An example:
"TG1 and T8 sparsely brown pruinose. T2-T4 over 1.5 times more long than wide, remaining tergites shorter and wider. T8 visible only on right side. Tergites short setose except TG1, lateral margins of T2 and T3 with long setae." (Neohybos cinereus; Hybotidae).
"Opposite" of sternite a ventral sclerite.

theca

Enlargement of sternite 5/6 in females of many Conopidae, sternite 5 is then produced ventrally as a pad-like structure anteriorly and with a variously developed plate-like portion posteriorly; sternite 6 often similarly developed but with pad-like anterior portion usually smaller and with pate-like posterior portion usually larger than those in segment 5.
Illustration showing a female of Conops flavipes, but in, for example, Sicus the theca is much smaller and rather inconspicuous.

tibia

Second long and well visible segment of the leg, counting from base, situated between the femur (first segment) and the tarsus (distal part of the leg that usually consists of five smaller segments).
Plural: tibiae.

Image courtesy of Japan Drosophila Database

tip

apex (synonym)

tomentose

With tomentum header=[tomentum] body=[The Glossary contains more than one matching items. Click the Term to see the options. <img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

. For example: Dasybasis elquiensis (Tabanidae): 'Tergites I to VI with broad greyish tomentose median posterior spots. Tergites III-VI with pale greyish tomentose sublateral spots.'

tomentum

Pubescence that is composed of matted hair; a covering of short, flattened, recumbent, scale-like hair which merges gradually into dust or pollen. The colour may change with the angle of view.

tomentum

pollinosity (synonym)

triserial

In three rows

tsetse fly

Vernacular name for species in the genus Glossina, the single genus in the family Glossinidae. The name is pronounced /ts/e-/ts/e, teet-SEE, or set-see. Well-known vector of trypanosomiasis.
Links: http://en.wikiped...lossinidae

type genus

The nominal genus that is the name-bearing type

of a nominal family-group header=[family-group] body=[Any taxon above the genus level up to the family level. (From the Glossary of the International Code of Zoological Nomenclature) (http://www.diptera.info/weblinks.php?cat_id=5&weblink_id=72). <img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

header=[family-group] body=[Any taxon above the genus level up to the family level. (From the Glossary of the International Code of Zoological Nomenclature) (http://www.diptera.info/weblinks.php?cat_id=5&weblink_id=72).<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

taxon. (From the Glossary of the International Code of Zoological Nomenclature).

type series

The series of specimens on which the original author bases a new nominal species-group taxon. In the absence of a holotype

header=[holotype] body=[The single specimen designated or otherwise fixed as the name-bearing type of a nominal species or subspecies when the nominal taxon is established. (From the Glossary of the International Code of Zoological Nomenclature) (http://www.diptera.info/weblinks.php?cat_id=5&weblink_id=72).<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

designation, any such specimen is eligible for subsequent designation as the name-bearing type (lectotype

header=[lectotype] body=[A syntype designated as the single name-bearing type specimen subsequent to the establishment of a nominal species or subspecies. (From the Glossary of the International Code of Zoological Nomenclature) (http://www.diptera.info/weblinks.php?cat_id=5&weblink_id=72).<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

); pending lectotype designation, all the specimens of the type series are syntypes and collectively they constitute the name-bearing type. Excluded from the type series are any specimens that the original author expressly excludes or refers to as distinct variants, or doubtfully includes in the taxon. (From the Glossary of the International Code of Zoological Nomenclature).

type species

The nominal species that is the name-bearing type

of a nominal genus or subgenus. (From the Glossary of the International Code of Zoological Nomenclature).

type specimen

Practical: When a biological species is named a single specimen is designated to carry the name. It is a standard of reference and if the species is already described or two species are merged types are maintained in case of dispute. This single specimen is the holotype. Other types are recognized: lectotype

is the most significant.
Official: A term used in previous editions of the Code for a holotype, lectotype or neotype

header=[neotype] body=[The single specimen designated as the name-bearing type of a nominal species or subspecies when there is a need to define the nominal taxon objectively and no name-bearing type is believed to be extant. If stability and universality are threatened, because an existing name-bearing type is either taxonomically inadequate or not in accord with the prevailing usage of a name, the Commission may use its plenary power to set aside that type and designate a neotype. (From the Glossary of the International Code of Zoological Nomenclature) (http://www.diptera.info/weblinks.php?cat_id=5&weblink_id=72).<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

, or for any syntype

header=[syntype] body=[Each specimen of a type series from which neither a holotype nor a lectotype has been designated. The syntypes collectively constitute the name-bearing type. (From the Glossary of the International Code of Zoological Nomenclature) (http://www.diptera.info/weblinks.php?cat_id=5&weblink_id=72).<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

; also used generally for any specimen of the type series

header=[type series] body=[The series of specimens on which the original author bases a new nominal species-group taxon. In the absence of a holotype designation, any such specimen is eligible for subsequent designation as the name-bearing type (lectotype); pending lectotype designation, all the specimens of the type series are syntypes and collectively they constitute the name-bearing type. Excluded from the type series are any specimens that the original author expressly excludes or refers to as distinct variants, or doubtfully includes in the taxon. (From the Glossary of the International Code of Zoological Nomenclature) (http://www.diptera.info/weblinks.php?cat_id=5&weblink_id=72).<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

. (From the Glossary of the International Code of Zoological Nomenclature).
Links: http://en.wikiped...zoology%29

uniserial

In one row.

upper calypter

The distal lobe of the posterobasal portion of the axillary membrane that joins the hind margin of the wing to the thorax is called the upper calypter. It begins the membrane folds over then lower calypter

header=[lower calypter] body=[The proximal lobe of the posterobasal portion of the axillary membrane that joins the hind margin of the wing to the thorax is called the lower calypter. It begins as a narrow, membranous ligament arising from the furrow between the scutellum and the postnotum and ends where the more distal lobe, the upper calypter, folds sharply over it.<br /><img src='../../infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

. It is usually larger than the lower calypter, but in some groups, e.g. Tabanidae, Acroceridae, and many Calyptratae, the lower calypter is larger than the upper one.

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.

Page 15 of 16

About the site