Guests Online: 7
Members Online: 3
Total Members: 2,637
Newest Member: Valentin Nidergas
Paul Beuk's Book Reviews
|Looking for something in particular?|
Last Seen Users
Latest Photo Additions
Terms Infusion (Glossary) - v3.10
|One of the developmental stages of the larva, between successive moults (the term instar can also be used to describe any developmental stage including egg, pupa or imago, so must not be used without stating which part of the life cycle is being referred to, i.e., always write larval instar even though the terms egg instar, pupal instar, imago instar are very rare). The number of larval instars is six or seven in black flies (Simuliidae) and four in most other Nematocera. Along the second line of evolution of flies, Brachycera have from five to eight instars while the maggots of the most advanced flies (Cyclorrhapha) have only three. One or two species have no moults. Sometimes moults occur before the larva hatches from the egg. Muscidae, for example, are arranged in three groups according to whether they are trimorphic (i.e., have three free larval instars), dimorphic (i.e., pass the first instar in the egg, have two free larval instars), or monomorphic (i.e., pass the first two instars in the egg, have one free larval instar). Monomorphic larvae are always predatory; trimorphic and dimorphic larvae feed first on decaying matter (are saprophagous), but they may or may not be predatory in their final instar.|
Recommended literature: Smith, K.V.G., 1989. An introduction to the immature stages of British flies. Diptera larvae, with notes on eggs, puparia and pupae. - Handbooks for the Identification of British Insects 10(14): 1-280. As an excellent reference with keys to suborders, families, subfamilies and genera.
|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).|
|These are setae placed on the surface of a leg. Often setae placed on femora or tibiae have diagnostic value, but there can also be setae on other parts of the legs. The leg is divided into eight imaginary planes: dorsal, posterodorsal, posterior, posteroventral, ventral, anteroventral, anterior, and anterodorsal. The leg flexes in the dorsal-ventral plane and if the leg is rotated on the coxa this is the important fact and not the position of the leg relative to the whole fly. Twin rows of small dorsal setae running the length of the femur and tibia act as a guide in some flies. Presence, absence, number and relative size of leg setae may be very significant taxonomic characters in many Diptera.|
|lesser dung flies|
|Vernacular name used for the family Sphaeroceridae.|
|lesser house flies|
|Vernacular name used for the family Fanniidae, more precisely for Fannia canicularis.|
|little house flies|
|lesser house flies (synonym)|
|Vernacular name for Plecia nearctica Hardy, 1940 (Pleciidae s.str. or Bibionidae s.l.).|
Also known as lovebug, kissybug, telephone bug, double-headed bug, and honeymoon fly.
|love bug (synonym)|
|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.|
Date and time
Not a member yet?Click here
Forgotten your password?
Request a new one here
Due to fact this site has functionality making use of your email address, any registration using a temporary email address will be rejected.
Syrph the Net
Those who want to have access to the Syrph the Net database need to sign the
License Agreement -
Click to Download
Public files of Syrph the Net can be downloaded HERE
Last updated: 25.08.2011
You must login to post a message.