The genus Trechona Koch 1850 includes spiders with a body size up to 50 mm.
This paper aims to redescribe Trechona rufa, raise it to species rank, designate a neotype and describe the male for the first time.
Additional information and color pictures of Trechona are available on our website: http://www.
It follows that the most useful character to diagnose species of Trechona and Diplura in relation to the lyra is not the number of large setae but the presence in Trechona of several series of clavate setae arranged in a plate, with the first series composed of much larger clavate setae than the other ones (compare Raven 1985, figs.
As the preliminary results of our ongoing work on Trechona suggest, the genus composition and distribution need thorough revision.
Trechona venosa rufa:Biicherl 1957:387; Pedroso & Baptista 2004:150, 151, 153.
The short spermatheca and copulatory bulb of Trechona rufa are similar to T.
Since the redescription of Trechona venosa (Pedroso & Baptista 2004), we examined many additional specimens of T.
We were able to examine only immature specimens from intermediate localities, as Ubatuba, Saao Paulo state, and Paraty, Rio de Janeiro state, but it is not possible to make an accurate determination as they do not bear the characters used to diagnose Trechona species.
Trechona adspersa was based on a male holotype from Pedra-Acu, Teresopolis, Rio de Janeiro state, Brazil.
Mygale lycosiformis was based on a female from Brazil and was subsequently transferred to the genus Trechona by C.
rogenhoferi, from Brazil (no further data), and pointed out that the specimen has the typical lyra of Trechona, but had not indicated if it was mature or not.