Abstract

Xyleborus vochysiae n. sp. (Curculionidae: Scolytinae) is described and illustrated. This newly discovered ambrosia beetle was collected from live trees of Vochysia ferruginea Mart. in wet tropical forests of Costa Rica. The new species does not fit readily into either Ambrosiodmus or Xyleborus, but it is placed in the latter genus on the balance of the evidence; it is not obviously close to any Ambrosiodmus or Xyleborus in Central America. X. vochysiae is extraordinary in three regards: it is the largest Xyleborini found in the Neotropics, it has only been collected from live trees, and it seems to be restricted to only one host species. On a world basis, only five other ambrosia beetles are known that regularly breed in live trees, and no species are known that are as host specific as is X. vochysiae.

RESUMEN

Se describe e ilustra la especie recientemente descubierta de escarabajo de la ambrosia Xyleborus vochysiae n. esp. (Curculionidae: Scolytinae). Este escarabajo de la ambrosia fué encontrado en muestras de árboles de Vochysia ferruginea Mart. en bosques tropicales humedos en Costa Rica. Esta nueva especie no corresponde exactamente con el género Ambrosiodmus ni tampoco con el género Xyleborus, dados los echos SE ha clasificado dentro del segundo genero. En tres aspectos Xyleborus vochysiae es excepcional: es el Xyleborini más largo encontrado en el Neotropico, sólamente ha sido encontrada en árboles vivos, y parece estar restringida a una sola especie de huésped. A nivel mundial sólamente son conocidas otras cinco especies de escarabajos de la ambrosia que SE reproducen en árboles vivos, y no SE conoce ninguna otra especie que esté especializada en un solo huésped a parte de X. vochysiae.

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