Parasitic Ichneumonoidea on the horse chestnut leaf miner, Cameraria ohridella (Lepidoptera: Gracillariidae) in Slovakia

Abstract

Parasitic Hymenoptera from the suprafamily Ichneumonoidea attacking the horse chestnut leafminer Cameraria ohridella Deschka & Dimic (Lepidoptera: Gracillariidae) were studied in southwest Slovakia during 2000 and 2001. The search for such species resulted in the determination of eight ichneumonid species, Gelis agilis (Fabricius), Itoplectis alternans (Gravenhorst), I. clavicornis (Thompson), I. maculator (Fabricius), Scambus annulatus (Kiss), S. brevicornis (Gravenhorst), Zatypota percontatoria (Mu¨ller), Adelognathus sp. and a braconid Colastes braconius Haliday.The most abundant species was S. annulatus. All these species recorded are polyphagous and often facultative hyperparasitoids, except C. braconius, which departs from this norm in not being hyperparasitic. The presence of more diversified native parasitoids and hyperparasitoids from the Ichneumonoidea predicate a slow successive adaptation of the parasitoid fauna to the invasive host, Cameraria ohridella.

Does the invasive horse-chestnut leaf mining moth, Cameraria ohridella, affect the native beech leaf mining weevil, Orchestes fagi, through apparent competition?

“…The horse-chestnut sites (i.e. in presence of C. ohridella) were characterized by the presence of beech trees located less than 50 m from one or more horse-chestnut Askew and Shaw (1974), Girardoz et al (2006), Grabenweger et al (2003), Noyes (2002), Tóth and Lukáš (2005), Tsankov and Stalev (1992), and Yu et al (2005). In bold are the five parasitoid species commonly found on C. ohridella trees that had been heavily and continuously infested by C. ohridella (i.e.…”

“…The larval and pupal stages are thus perfectly synchronized with the flight period of the parasitoids of C. ohridella. O. fagi has a large parasitoid complex in Europe (Askew and Shaw 1974;Tsankov and Stalev 1992;Noyes 2002;Tóth and Lukáš 2005;Yu et al 2005). In particular, it is known to be attacked by all the main parasitoids of C. ohridella in Switzerland (Girardoz et al 2006(Girardoz et al , 2007a (Table 1).…”

Tree Injection in the Management of Horse-Chestnut Leaf Miner. Cameraria ohridella (Lepidoptera: Gracillariidae)

“…the most abundant species was Scambus annulatus (Kiss). the presence of more diversified native parasitoids and hyperparasitoids from the ichneumonoidea predicate a slow successive adaptation of the parasitoid fauna to the invasive host (Tóth and Lukáš 2005).…”

Comparing and contrasting development and reproductive strategies in the pupal hyperparasitoids Lysibia nana and Gelis agilis (Hymenoptera: Ichneumonidae)

“…Gelis agilis Fabricius (Hymenoptera: Ichneumonidae) is a wingless, asexually reproducing facultative hyperparasitoid of several Cotesia species that is also potentially a primary parasitoid of many other hosts in nature. For example, in addition to parasitoid cocoons, G. agilis and other Gelis species are known to attack such evolutionarily divergent hosts such as moth pupae and even spider egg sacs (Bezant 1956;Schwarz and Boriani 1994;van Baarlen et al 1996;Cobb and Cobb 2004;Toth and Lucas 2005). In addition to nectar sources, adult G. agilis females obtain extra resources by feeding on host fluids.…”