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(invertebrate zoology)
The ichneumon flies, a large family of cosmopolitan, parasitic wasps in the superfamily Ichneumonoidea.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a family of parasitic insects of the order Hymenoptera. Body length, 0.4—5 cm; the abdomen and thorax have movable segments. Most species have well-developed wings; the females have an ovipositor, which protrudes outward and is quite long in some species.

Approximately 1, 250 genera (more than 60, 000 species) of ichneumon flies are found throughout the world. Representatives of about 400 genera are encountered in the USSR. The female seeks an animal host and deposits its eggs either on or in the host’s body. The larvae develop as internal or external parasites of the larvae or pupae of other insects or, less commonly, of spiders. By the completion of their development, the larvae have completely destroyed the internal organs of the host. Among the Ichneumonidae are a few hyperparasites, which parasitize the parasites of other insects. Adults feed primarily on flower nectar. The majority are active during the day; some species fly at night and are attracted to light.

Ichneumon flies play an important role in limiting the insect population and are used in the biological control of harmful insects. Sometimes the Russian common name for the Ichneumonidae, naezdniki, is used to designate representatives of other groups of parasitic Hymenoptera, such as the braconids, proctotrupids, and chalcids.


Suitmen, Kh. Biologicheskii metod bor’by s vrednymi nasekomymi i sornymi rasteniiami. Moscow, 1964.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
They found that the Ichneumonidae family accounted for the largest number of individuals in Malaise traps (35.1 %), followed by Braconidae (19.1 %), while Diapriidae (26.7 %) and Encyrtidae (11.5 %) were the most abundant families in Moericke traps in south eastern Brazil.
This study has gathered a lot of knowledge and information in order to increase awareness in preventing the reduction of the Ichneumonidae since they play an important role in the ecosystem and economical terms [1].
Ademas, los Ophioninae pueden ser utilizados en estudios biogeograficos y ecologicos ya que a diferencia de muchos Ichneumonidae, gran numero de especimenes pueden ser colectados efectivamente con trampas de luz de vapor de mercurio (Gauld & Lanfranco 1987) debido a que estas avispas son generalmente activas durante la noche (Gauld 1988).
La fauna de Ichneumonidae en Peru, tiene escasos estudios a pesar de ser posiblemente de una gran diversidad.
Wasp colonies can be invaded by natural enemies, such as Hymenoptera (Eulophidae and Ichneumonidae) and Diptera (Phoridae) parasitoids, and be attacked by predators, such as ants and birds (Clouse, 2001).
canescens (Gravenhorst) (Hymenoptera: Ichneumonidae), was reared on the Indian meal moth, Plodia interpunctella Hubner (Lepidoptera: Pyralidae), in 4-L sterilized jars kept in a constant temperature room maintained at26.8oC+- 2, 65% +- 3 relative humidity, and a 16:8 light- dark photoperiod.
Exclusivamente para el lote A (con salicilato) (Tabla 2), se capturaron 11 morfoespecies de insectos beneficos pertenecientes a las familias Perilampidae, Formicidae, Coccinellidae, Chrysopidae, Ichneumonidae, Chalcidae, Chrysididae y Braconidae, de las cuales se identificaron las especies: Perilampus sp., Crematogaster sp.
The Banchinae is a cosmopolitan group of Ichneumonidae characterized by having a long, apically notched ovipositor, a propodeum without or with only a few carinae, a tergite I with spiracles located around or before the centre (except in the genus Lissocaulus) and frequently, the anterior part of the submetapleural carina expanded into a broad lobe (Gauld et al.