Lying on the dorsum: unique host-attacking behaviour of Zatypota albicoxa (Hymenoptera, Ichneumonidae)

Takasuka, Keizo; Matsumoto, Rikio

doi:10.1007/s10164-010-0263-8

Cited by 16 publications

(12 citation statements)

References 8 publications

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“…This observation indicates the existence of host-parasitoid specificity. Koinobiont ectoparasitoids of the genus group Polysphincta (Hymenoptera: Ichneumonidae, Pimplinae) exhibit high parasitoid-host specificity, using only one species or groups of spider species that share common characteristics as hosts (Matsumoto and Konishi 2007, Gonzaga and Sobczak 2011, Takasuka and Matsumoto 2011, Eberhard 2013, Sobczak et al 2014. Furthermore, parasitic wasps tend to select intermediate-sized hosts that have sufficient biomass for larval development, but do not represent a threat to the wasp during the attack (Gonzaga and Sobczak 2011).…”

Section: Resultsmentioning

confidence: 99%

Paracyphononyx scapulatus (Hymenoptera, Pompilidae), a koinobiont ectoparasitoid of Trochosa sp. (Araneae, Lycosidae)

Souza¹,

Messas²,

Masago³

et al. 2015

JHR

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The genus Paracyphononyx Gribodo, 1884 (Pompilidae) contains species that act as koinobiont parasitoids of cursorial spiders. Here, we record a new parasitism interaction involving the pompilid wasp Paracyphononyx scapulatus (Bréthes) and the hunter spider Trochosa sp. (Lycosidae), and we describe how the wasp develops on the spider. This study contributes new information about the interaction between koinobiont ectoparasitoid wasps and spiders, which probably arose independently in different groups of wasps.

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Section: Resultsmentioning

confidence: 99%

Paracyphononyx scapulatus (Hymenoptera, Pompilidae), a koinobiont ectoparasitoid of Trochosa sp. (Araneae, Lycosidae)

Souza¹,

Messas²,

Masago³

et al. 2015

JHR

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“…(a) Zatypota petronae against Theridion evexum (Weng & Barrantes, ). (b) Zatypota albicoxa against Parasteatoda tepidariorum (Takasuka et al ., ; Takasuka & Matsumoto, ). (c) Zatypota maculata against Nihonhimea japonica .…”

Section: Discussionmentioning

confidence: 98%

Oviposition behaviour by a spider‐ectoparasitoid, Zatypota maculata, exploits the specialized prey capture technique of its spider host

2019

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Oviposition on or into a living animal is an arduous undertaking for parasitoids, including in terms of counterattack or evasion by the host. Parasitoids of active spiders protected by their own webs (polysphinctine spider‐ectoparasitoids in the family Ichneumonidae) need to avoid entanglement with the spider's web to gain access to the spider host for oviposition. These circumstances have driven the evolution of offensive behaviours highly adapted to the web architecture of each spider host. We discovered offensive oviposition behaviour in a member of the Polysphincta‐group, Zatypota maculata, parasitizing a theridiid spider, Nihonhimea japonica, which constructs a ‘knockdown 3D web’. It consists of a non‐viscid 3D structure above, with a retreat (a dead leaf) hung at the centre, and a non‐viscid sheet below as a capturing device. When a prey insect is knocked down and then trapped by the sheet, the spider immediately drops onto the underside of the sheet by penetrating it to bite and wrap the prey. Zatypota maculata exhibits two behaviours to deal with this type of web: (1) the wasp climbs the 3D cobweb, creeps up slowly onto the spider's retreat, taking a long time so that the spider does not escape, and finally enters the retreat to sting the spider (creeping‐style); (2) the wasp dives from outside of the web onto the sheet, as a knocked‐down prey item would, to lure the spider out, before stinging it at the moment of contact (diving‐style). We discuss these unique offensive behaviours and compare them with behaviours of other polysphinctines and spider‐hunting aculeates. Ovicide by means of removal of pre‐existing eggs was also observed under experimental conditions.

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“…The group as a whole utilizes a wide range of host spiders while each genus is specialized to certain host families. Each species or genus of the Polysphincta group exhibits a unique mode of parasitism (Fincke et al , ; Eberhard, 2000a,b; Gonzaga & Sobczak, ; Matsumoto & Konishi, ; Weng & Barrantes, ; Matsumoto, ; Takasuka et al , ; Takasuka & Matsumoto, 2011a), probably to overcome host spiders that exhibit unique foraging and defensive behaviours.…”

Section: Introductionmentioning

confidence: 99%

Molecular phylogeny and systematics of the Polysphincta group of genera (Hymenoptera, Ichneumonidae, Pimplinae)

Matsumoto

2016

Systematic Entomology

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The phylogenetic relationships between genera of the Polysphincta group of Pimplinae (Ichneumonidae) were surveyed using molecular markers, partial sequences of cytochrome c oxidase I (COI), 28S rRNA and elongation factor 1α, and maximum likelihood and Bayesian approaches to obtain a robust phylogenetic hypothesis to understand the evolution of the group. The Polysphincta group was recovered as monophyletic, although relationships between genera were different from previous hypotheses based on morphological data. Within the Polysphincta group, three major clades were recognized and phylogenetic relationships among them were well resolved as (Schizopyga subgroup + (Acrodactyla subgroup + Polysphincta subgroup)). The Schizopyga subgroup consisted of the genera Piogaster, Schizopyga, Zabrachypus and Brachyzapus. As the genus Schizopyga was found to be polyphyletic, the genus Dreisbachia, which had been synonymized under Schizopyga, was resurrected and Iania gen.n. is proposed for Dreisbachia pictifrons, to maintain monophyletic genera. Species of the Schizopyga subgroup utilize spiders constructing egg‐laying chambers or funnel webs as hosts. The genus Piogaster was not recovered as the sister to all other members of the genus group, unlike previous hypotheses, but was nested in this clade as (Zabrachypus + ((Brachyzapus + Schizopyga) + (Dreisbachia + (Iania + Piogaster)))). Members of the Acrodactyla and Polysphincta subgroups attack spiders that weave aerial webs. The host range of the former is centred on tetragnathid and linyphiid spiders, the host range of the latter seems to centre mainly on orb‐weaving araneids and partly on theridiids weaving three‐dimensional (3D) irregular webs. Based on the obtained phylogeny of the group, the evolution of larval and cocoon morphology, and the mode of parasitism are discussed. Acrodactyla varicarinata Uchida & Momoi and A. inoperta Kusigemati are transferred to the genus Megaetaira (comb.n.). This published work has been registered in ZooBank, http://zoobank.org/urn:lsid:zoobank.org:pub:0AB1086F-9F23-4057-B7ED-3A3943E19C61.

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Lying on the dorsum: unique host-attacking behaviour of Zatypota albicoxa (Hymenoptera, Ichneumonidae)

Cited by 16 publications

References 8 publications

Paracyphononyx scapulatus (Hymenoptera, Pompilidae), a koinobiont ectoparasitoid of Trochosa sp. (Araneae, Lycosidae)

Paracyphononyx scapulatus (Hymenoptera, Pompilidae), a koinobiont ectoparasitoid of Trochosa sp. (Araneae, Lycosidae)

Oviposition behaviour by a spider‐ectoparasitoid, Zatypota maculata, exploits the specialized prey capture technique of its spider host

Molecular phylogeny and systematics of the Polysphincta group of genera (Hymenoptera, Ichneumonidae, Pimplinae)

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