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Sexually dimorphic tegumental gland openings in Laniatores (Arachnida, Opiliones), with new data on 23 species
TLDR
This study reviews the literature for the Phalangida and presents new data for 23 species of Laniatores, finding previously undescribed sexually dimorphic glandular openings on the femur, patella, metatarsus, and tarsus of legs I and metatarsu of legs III and IV.
Genitalic Evolution in Opiliones
The Opiliones, usually known in English as harvestmen or daddy longlegs, are the third largest group in the class Arachnida, with nearly 6,000 described species (Machado et al. 2007). Harvestmen are
World Checklist of Opiliones species (Arachnida). Part 2: Laniatores – Samooidea, Zalmoxoidea and Grassatores incertae sedis
TLDR
This database is part 2 of 12 of a project containing an intended worldwide checklist of species and subspecies of Opiliones, and it includes the members of the suborder Laniatores, infraorder Grassatores of the superfamilies Samooidea and Zalmoxoidea plus the genera currently not allocated to any family (i.e. grassatores incertae sedis).
Insights on vulval morphology in Ochyroceratinae with a rediagnosis of the subfamily and description of the first Argentinean species (Araneae: Synspermiata: Ochyroceratidae)
TLDR
It is proposed that another synapomorphy for Ochyroceratinae is the insertion of the male palpal copulatory organ in a projecting pedestal at the base of the cymbium, and the differential diagnosis of the subfamily is updated.
Beauty under the mud: Soil crypsis in new species of the Malagasy genus Ankaratrix (Opiliones: Triaenonychidae: Triaenobuninae)
TLDR
Investigation of camouflage in the Malagasy endemic genus Ankaratrix finds a glue layer seems to play an important role in soil crypsis, together with the long tubercles or cuticular apophyses, which could help to catch and retain the soil particles bringing stability to the camouflage layer.
When troglomorphism dupes taxonomists: morphology and molecules reveal the first pyramidopid harvestman (Arachnida, Opiliones, Pyramidopidae) from the New World
TLDR
Morphological evidence, including male genitalia morphology, supports the inclusion of J. pecki in 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.
A fresh look over the genital morphology of Triaenonychoides (Opiliones: Laniatores: Triaenonychidae) unravelling for the first time the functional morphology of male genitalia
TLDR
This study improves upon the original genitalia descriptions for two Chilean Triaenonychidae species and provides corrections to several original mistakes and misinterpretation, and describes for the first time the mechanical eversion of the penis' glans.
Light from dark: A relictual troglobite reveals a broader ancestral distribution for kimulid harvestmen (Opiliones: Laniatores: Kimulidae) in South America
TLDR
The discovery of this relictual troglobite indicates that the Olhos d’Água cave was a stable refugium for this ancient lineage of kimulids and acted as a "museum" of biodiversity, highlighting it as one of the most important hotspots of trogLobite diversity and endemism in the Neotropics.
A companion to Part 2 of the World Checklist of Opiliones species (Arachnida): Laniatores – Samooidea, Zalmoxoidea and Grassatores incertae sedis
TLDR
This paper containing nomenclatural acts is meant to accompany Part 2, which includes the members of the infraorder Grassatores of the superfamilies Samooidea and Zalmoxoidea plus the Grassatore currently not allocated to any family (i.e. Grassators incertae sedis).
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