Xylotoles costatus
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X. costatus
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| Xylotoles costatus Pascoe, 1875
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Xylotoles costatus, the Pitt Island longhorn beetle, is a species of beetle in the family Cerambycidae. It is endemic to New Zealand. Originally thought to be extinct in 1986, it was found again during 1996 on South East Island/Rangatira in the Chatham Islands; the species is now considered a Lazarus taxon.[1]
Description and identification
Identification of Xylotoles costatus is difficult as it is very similar in appearance to another longhorn beetle found in the Chatham Islands, Xylotoles traversii. Both species are coloured black with a green bronze sheen, however it is likely that X. costatus has more of a bronze sheen than X. traversii. Of the two species X. costatus also has the more pronounced ridges on its wing cases. Generally X. traversii is the smaller beetle of the two, but the size of the two species can overlap. However if a longhorn beetle specimen is found in the Chatham Islands that is greater than 16 mm in length it is likely to be X. costatus.[2]
References
External Links
- Image of the Type specimen from the Natural History Museum, London.
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