A new species of Trechalea (Pisauridae: Aranae) from Central Amazonian 
inundation forests and notes on its natural history and ecology

Carico, James E.; Adis, Joachim U.; Penny, Norman D.

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A new species of Trechalea (Pisauridae: Aranae) from Central Amazonian inundation forests and notes on its natural history and ecology

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Adis, Joachim U.
Working Group Tropical Ecology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Citation

Carico, J. E., Adis, J. U., & Penny, N. D. (1985). A new species of Trechalea (Pisauridae: Aranae) from Central Amazonian inundation forests and notes on its natural history and ecology. Bulletin of the British Arachnological Society, 6(7), 289-294.

Cite as: https://hdl.handle.net/21.11116/0000-0005-392D-A

Abstract

The new species of pisaurid, Trechalea manauensis Carico, is described. It is found on tree trunks
of inundation forests near Manaus, Brazil where it
is well camouflaged and capable of adjusting the
colour intensity of its body markings to the
habitat. This night-active species passively waits
for approaching soft-bodied arthropods, its only
prey. The main reproduction period occurs
between March and June when forests are flooded.
Spider egg sacs ate parasitised by Mantispa gracilis
(Mantispidae: Neuroptera) and small hymenopterans (Chalcidoidea). Infestation level of the
mantispid is about 2%. The adult mantispid parasite is assumed to be a facultative egg sac boarder
or penetrator.