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1 July 2018 Cyclosa omonaga (Araneae: Araneidae), an Alternative Host of the Spider Ectoparasitoid Reclinervellus nielseni (Hymenoptera: Ichneumonidae), with Notes on Behavioural Manipulation
Keizo Takasuka
Author Affiliations +
Abstract

Parasitism upon Cyclosa omonaga (Araneidae) by the ichneumonid ectoparasitoid Reclinervellus nielseni is reported for the first time, based on molecular identification, corroborating that R. nielseni is a specialist parasitoid of members of the genus Cyclosa, having previously been recorded from C. argenteoalba,C. conica and C. laticauda. The parasitoid larva at the time of discovery (11 December) was still tiny in spite of the beginning of winter, indicating it was in its overwintering phase, and this is the first case of the overwintering R. nielseni larva found in Japan. The host's cocoon web, with fibrous and fluffy thread decorations (FTD) resulting from the wasp's behavioural manipulation, produced by the parasitized C. omonaga is described and illustrated, and its potential role is discussed.

Keizo Takasuka "Cyclosa omonaga (Araneae: Araneidae), an Alternative Host of the Spider Ectoparasitoid Reclinervellus nielseni (Hymenoptera: Ichneumonidae), with Notes on Behavioural Manipulation," Arachnology 17(8), 406-409, (1 July 2018). https://doi.org/10.13156/arac.2017.17.8.406
Published: 1 July 2018
KEYWORDS
cocoon web
COI
FTD
overwinter
Polysphincta group
resting web
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