Two New Cave-Dwelling Species of the Short-Tailed Whipscorpion Genus Rowlandius (Arachnida: Schizomida: Hubbardiidae) from Northeastern Brazil, with Comments on Male Dimorphism

被引：18

作者：

Santos, Adalberto J. ^{[1
]}

Ferreira, Rodrigo Lopes ^{[2
]}

Buzatto, Bruno A. ^{[3
]}

机构：

[1] Univ Fed Minas Gerais, Inst Ciencias Biol, Dept Zool, Belo Horizonte, MG, Brazil

[2] Univ Fed Lavras, Dept Biol, Lavras, MG, Brazil

[3] Univ Western Australia, Sch Anim Biol M092, Ctr Evolutionary Biol, Perth, WA 6009, Australia

来源：

PLOS ONE | 2013年 / 8卷 / 05期

关键词：

ALLOMETRY; THRESHOLD; TACTICS; TRAITS;

D O I：

10.1371/journal.pone.0063616

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Two new species of the arachnid order Schizomida, Rowlandius ubajara sp. nov. and Rowlandius potiguar sp. nov., are described based on both male and female specimens collected in caves from northeastern Brazil. Rowlandius ubajara is known only from the Ubajara Cave, in the state of Ceara; R. potiguar is recorded from 20 caves of the Apodi Limestone Group, in the state of Rio Grande do Norte. A remarkable dimorphism in male pedipalp length is described and analyzed in R. potiguar. The distribution of male pedipalp length is clearly bimodal in the species, but the two male morphs (homeomorphic and heteromorphic) present some overlap in the sizes of this structure. Moreover, males show a steeper allometry in pedipalp length than females, indicating that this trait is under a different selective regime in males and in females.

引用

页数：12

共 29 条

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