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Pseudomalus, Homoptera & Pemphredoninae

PostPosted: 10 Apr 2012 15:13
by Gian Luca Agnoli
Image R.L. Veenendaal (1) reports some biological observations on Pseudomalus triangulifer emerged from artificial nests of Sphecidae Pemphredoninae. Because Pseudomalus females have never been observed at the nest entrances of their hosts, and following the observations made by P. Derennes et al. on HymIS.de (2), the suggestion is that Pseudomalus species place their eggs on the body of aphids (Homoptera) before they are collected by Pemphredoninae.

Image R.L. Veenendaal (1) riporta alcune osservazioni sulla biologia di Pseudomalus triangulifer sfarfallati da nidi artificiali di Sphecidae Pemphredoninae. Dal momento che le femmine di Pseudomalus non sono mai state osservate all'ingresso dei nidi dei loro ospiti, e in seguito alle osservazioni fatte da P. Derennes et al. su HymIS.de (2), viene avanzata l'ipotesi che le specie di Pseudomalus facciano aderire le uova sul corpo degli afidi (Homoptera) prima che questi vengano catturati dai Pemphredoninae.

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(1) Veenendaal R.L., 2011 - Pseudomalus triangulifer, een nieuwe kogelgoudwesp voor de Nederlandse fauna (Hymenoptera: Chrysididae). Nederlandse Faunistiche Mededelingen, 35: 17-20
(2) http://www.hymis.de/forum/viewtopic.php?p=15779

Re: Pseudomalus, Homoptera & Pemphredoninae

PostPosted: 11 Nov 2012 19:47
by andrewpasha
Many of the insects lay their eggs on the moist place. After meeting egg developed when the sperm enter in the ovary of the female organ. Development of organism consists of many stages. Their life cycle vary from each other but mostly hatch from egg. Immature stages can differ from the adult in structure, habit and habitat and can also include another stage called pupal stage. I am also of the view that Pseudomalus species place their eggs on the body of Homoptera.