Ceropales maculata rhodomerus

Townes, 1957

Ceropales maculata rhodomerus is a of spider wasp in the Pompilidae, described by Townes in 1957. It is part of a known for kleptoparasitic , where females steal prey from other spider wasps rather than hunting spiders directly. The subspecies epithet 'rhodomerus' refers to its reddish coloration. Records indicate presence in Belgium, Denmark, and Norway, suggesting a northwestern European distribution.

Pronunciation

How to pronounce Ceropales maculata rhodomerus: /ˌsɛroʊˈpeɪliːz ˌmækjuˈleɪtə roʊˈdɒmərəs/

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Identification

Members of the Ceropales can be distinguished from other spider wasps (Pompilidae) by their kleptoparasitic lifestyle and associated morphological adaptations. Ceropales maculata rhodomerus specifically is characterized by reddish coloration, as indicated by its name. The genus Ceropales has relatively few antennal segments compared to ichneumon wasps, with longer segments than those of ichneumons. Accurate identification to subspecies level requires examination of coloration patterns and geographic origin.

Distribution

Belgium (including Flemish Region and Walloon Region), Denmark, and Norway.

Behavior

Females of the Ceropales are kleptoparasites, meaning they intercept spiders captured by other spider wasp . Rather than hunting spiders directly, a female Ceropales follows another spider wasp carrying paralyzed prey back to its nest, then deposits her own on the spider before the can seal the . This has been documented for the genus but specific observations for C. m. rhodomerus are not confirmed.

Ecological Role

As kleptoparasites, members of this represent a tertiary consumer level in , exploiting the hunting efforts of primary spider-hunting wasps. This parasitic relationship reduces the reproductive success of spider wasp while providing a for species that do not directly hunt spiders.

Similar Taxa

Ceratogastra ornataSimilar size (10-12 mm) and color pattern; both have yellow and reddish-brown markings. Ceratogastra ornata is an ichneumon with many short antennal segments, while Ceropales has fewer, longer antennal segments. Wing venation differs, with ichneumons showing a distinctive 'horse ' in the forewing.
Poecilopompilus spp.Spider wasps that serve as potential models for mimicry; slightly larger than Ceropales and direct hunters of spiders rather than kleptoparasites.