Cytogenetics in three species of Polybetes Simon 1897 from Argentina (Araneae, Sparassidae) I. karyotype and chromosome banding pattern.(Report) From: Journal of Arachnology | Date: May 1, 2007| Author: Merani, Maria Susana; Mola, Liliana Maria; Rodriguez-Gil, Sergio Gustavo; Scioscia, Cristina Luisa | COPYRIGHT 2007 American Arachnological Society. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

ABSTRACT. Species of Polybetes are known exclusively from South America. Currently there are 13 described species, 9 occurring in Argentina. Cytogenetic studies in spiders are scarce; the cytogenetics of only about 1% of nearly 39,500 described species are known. Within the Sparassidae, 38 species out of 1,009 (< 4%) have been cytogenetically analyzed; the most frequent chromosome number is 2n = 43/46 (male/female), n = 20 + [X.sub.1] [X.sub.2] [X.sub.3], present in almost half of ...

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