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More Information about: larval instar
Term larval instar
Explanation 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.
Category Pre-imaginal stages
Submitted by Robert Nash
Date Added/
Modified
23.06.06
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Date and time
18 November 2019 14:49
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01.11.19 22:46
Hi! may I ask, why the soldierfly banner (https://www.dipte
ra.info/images/sol
dierfly-banner.png
) is so big (4790x870 Pixels, 1, 4 M Cool? It always lasts minutes to load on a slow connection and costs a

18.09.19 20:06
Jewell699, you should post it in the forum, not submit it for the gallery.

15.09.19 20:41
Jewelm699 - did you upload it to a forum (which one?) or the gallery? I can't find it.

11.09.19 13:15
I’m hoping someone can identify the phoridae maggot or pupae I just uploaded.

28.08.19 14:29
Rafael p is legs and f1 is fore femur

26.08.19 17:13
If you experienced a very sluggish site recently, it may have been because someone tried to upload a maliciuous script by force. It appears to have failed. The visitor was blocked further access.

25.07.19 15:13
@Paul Beuk Thanks mate!! Best wishes!

22.07.19 15:09
Where are the meaning abbreviations of Lindner's series Die Fliegen der Palaearktischen Region, ie. f1: anterior femur, ...and what about "p"? (I don't possess volume I)

17.07.19 19:37
Yup, you can view the wing from above (dorsal side) and from beneath (ventral side).

16.07.19 13:31
Hey Dipterists! Quick Question: Vein r2+3 bare beneath. I've always assumed that this is below as in when you look at the wing flat. Am I right? Thank youuuuu! Pfft

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