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1 May 2008 A Review Of The Neotropical Bee Genus Ctenioschelus Romand (Hymenoptera: Apidae: Ericrocidini)
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The female of Ctenioschelus chalcodes Thiele is described from northwestern Costa Rica. Lacking the characteristic antennae of the male, the females are not easily distinguished from those of C. goryi (Romand). The lack of strongly violet iridescent scales on the head and mesosomal dorsum of C. chalcodes and the largely concave dorsum of the mesoscutellar tubercles distinguish females of this species from those of C. goryi. Most external characters of the additional male specimens of C. chalcodes agree with those mentioned in the original description. The geographic distribution of C. chalcodes in Costa Rica seems to be restricted to dry forest in the northwest, whereas C. goryi occurs in wet forests throughout the rest of the country, indicating a parapatric distribution pattern for the two species. Nectar host plants and associated species are provided, but no bee hosts for these cleptoparasitic species could be determined so far. A key to the species is provided.

Rainer Thiele "A Review Of The Neotropical Bee Genus Ctenioschelus Romand (Hymenoptera: Apidae: Ericrocidini)," Entomological News 119(3), 278-286, (1 May 2008).[278:AROTNB]2.0.CO;2
Received: 13 September 2007; Accepted: 1 October 2007; Published: 1 May 2008

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