planidium


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planidium

[plə′nid·ē·əm]
(invertebrate zoology)
A first-stage legless larva of various insects in the orders Diptera and Hymenoptera.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
They oviposit away from the host, with the active first instar larva (planidium) responsible for getting into the ant nest through various associations with foraging adult ants [9].
Host plants with eggs extracted from the field or oviposited by the captive females were placed into a cylindrical glass container of 10 x 10 cm with dampened cotton until emergence of the first instar (planidium).
Larvae were also inspected, and the presence of round melanized scars (evidence of the previous attachment of a planidium), and both the number and location of planidia, if present, were recorded.
Furthermore, from a total of 9 larvae collected from 3 nests only 1 larva was parasitized (i.e., a global prevalence of parasitism of larvae of 11.1%), and bore a planidium attached to the left maxilla.
Once a host is found, the planidium climbs on to the spider, migrates to the spider's abdomen, and cuts a small hole to enter the spider en route to the booklungs (Schlinger 1987; see Nielsen et al.
6 (F = 8.33; P < 0.004; [r.sup.2] = 0.02) and indicates a reduction in the mean weight of the pupae of 2.2 mg for each additional planidium.