The first species of Roquettea from Maranhão, Brazil (Opiliones: Cosmetidae: Discosomaticinae)

Kury, Adriano B.

doi:10.1590/s1984-46702013000500009

Cited by 2 publications

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References 4 publications

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“…The material examined has been deposited in the Colección Nacional de Arácnidos (CNAN) UNAM, Mexico; American Museum of Natural History (AMNH), New York, USA; Texas Memorial Museum (TMM), Texas, USA, and Museo Argentino de Ciencias Naturales (MACN), Buenos Aires, Argentina. We adopted the terms alpha and beta male commonly used for Opiliones (Kury, , ; Ferreira & Kury, ; Kury & Ferreira, ; Ázara, DaSilva & Ferreira, ) and equivalent to Major/Minor males (Zatz et al ., ; Buzatto & Machado, ) to describe the dimorphic male condition in which larger, more strongly armed males (= alpha) are distinct from smaller, weakly armed males (= beta). One beta male of J. pecki comb.…”

Section: Methodsmentioning

confidence: 99%

“…Among laniatorean harvestmen, the family Stygnommatidae is the epitome of wastebasket taxa because it contains species without a common ocularium that also lack a tarsal scopula. The family currently comprises one genus and 33 species (Kury, ), although several studies have indicated that this is a non‐monophyletic assemblage (Pérez‐González, , ; Pérez‐González & Kury, ; Sharma & Giribet, ).…”

Section: Introductionmentioning

confidence: 99%

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When troglomorphism dupes taxonomists: morphology and molecules reveal the first pyramidopid harvestman (Arachnida, Opiliones, Pyramidopidae) from the New World

2016

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Cavernicolous species that exhibit a high degree of troglomorphism often provide some of the most intriguing evolutionary riddles. For such taxa, the correct systematic arrangement is difficult to determine and becomes problematic when based solely on highly convergent external morphological characters, leading to exaggerated support of spurious relationships. For the arachnid order Opiliones, examination of male genitalia morphology often aids in determining the family to which a particular taxon belongs. However, many taxa described prior to the 1990s lack detailed descriptions or drawings of this important character and, for highly‐derived species, it is may still be necessary to seek support from additional sources of characters (e.g. molecular data) to accurately assess systematic placement. The enigmatic species Stygnomma pecki Goodnight & Goodnight, from a cave in Belize proved to be especially difficult to place based on morphological characters alone. Thus, using a previously published dataset for laniatorean harvestmen, we carried out a robust phylogenetic analysis aiming to determine the evolutionary relationship of this Neotropical troglomophic species. Informed by the results of the molecular phylogenetic analysis of 88 terminals representing Laniatores, we describe Jarmilana gen. nov. and provide a redescription of the type species Jarmilana pecki (Goodnight & Goodnight, ) comb. nov. Morphological evidence, including male genitalia morphology, supports the inclusion of J. pecki in the family Pyramidopidae. This represents the first record for the family Pyramidopidae in the New World, raising the question of whether this represents transoceanic dispersal or a relict of an ancient widespread tropical Gondwanan distribution.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

When troglomorphism dupes taxonomists: morphology and molecules reveal the first pyramidopid harvestman (Arachnida, Opiliones, Pyramidopidae) from the New World

2016

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Relationships and cladistic analysis of Roquettea with description of two new species and notes about evolution of stylus in Cosmetidae (Opiliones, Grassatores)

Medrano

Kury

2018

Invert. Systematics

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The phylogeny of the genus Roquettea Mello-Leitão, 1931 and its position in Discosomaticinae are investigated. The monophyly of an expanded Roquettea is for the first time tested and corroborated. The internal relations of Roquettea are elucidated by means of a morphological maximum parsimony cladistic analysis. Synapomorphies for the genus include: pedipalpal tibia forming long lobe projected anteriorly; supranumerary ventral plate macroseta grouped with macrosetae C; penis ventral plate projections and stylus with beak. New characters are proposed for the Cosmetidae species and genera, and special focus is placed on the finer study of the glans complex, with a fresh proposal of homology for its constituent parts and their evolution in the light of the topology proposed here. Roquettea bubalina, sp. nov. and Roquettea troguloides, sp. nov. are described respectively from the Brazilian states of Mato Grosso and Pará. Both species present unique dorsal protuberances and unusual ocularia. New material of previously described species of Roquettea is available, increasing our knowledge on the genus. The following new semaphoronts are described and illustrated: β male of R. carajas Kury & Ferreira, 2012; females of R. decioi Kury, 2013, R. taurina Ferreira & Kury, 2010 and of R. jalapensis Ferreira & Kury, 2010. An emended diagnosis and an identification key are provided for the species of Roquettea including all known semaphoronts.

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The first species of Roquettea from Maranhão, Brazil (Opiliones: Cosmetidae: Discosomaticinae)

Cited by 2 publications

References 4 publications

When troglomorphism dupes taxonomists: morphology and molecules reveal the first pyramidopid harvestman (Arachnida, Opiliones, Pyramidopidae) from the New World

When troglomorphism dupes taxonomists: morphology and molecules reveal the first pyramidopid harvestman (Arachnida, Opiliones, Pyramidopidae) from the New World

Relationships and cladistic analysis of Roquettea with description of two new species and notes about evolution of stylus in Cosmetidae (Opiliones, Grassatores)

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