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Spiders from the Island of Fernando de Noronha, Brazil: Part III: Gnaphosidae (Araneae: Arachnida)

DOI: 10.1590/S0101-81752008000200022

Keywords: neotropical region, taxonomy, trachyzelotes, zimiromus.

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Abstract:

the female of zimiromus hortenciae buckup & brescovit, 1993 is described for the first time and trachyzelotes kulczynskii (b?semberg, 1902), a species introduced from europe, is recorded for the first time on the island of fernando de noronha, state of pernambuco. the latter, along with t. lyonneti (audouim, 1826) recorded from the state of rio grande do sul, is the second species of this genus to be reported from brazil. the spiders were collected with pitfall traps in five points of the island. ecological data showed that gnaphosidae was the fifth best sampled spider family, with 179 specimens, belonging to two species, t. kulczynskii and z. hortenciae. trachyzelotes kulczynskii was the most abundant with 118 adults while z. hortenciae was represented by only 21 adults. both species were collected during the dry and wet seasons but t. kulczynskii was more abundant during the wet season while z. hortenciae was more abundant during the dry season. the male:female ratio for the dry season was similar for both species but in the wet season it was three times higher for t. kulczynskii.

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