P. Gnaspini

Publications59
h-index17
Citations868
Highly Influential Citations63
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A comparative analysis of the chemical nature of defensive secretions of Gonyleptidae (Arachnida: Opiliones: Laniatores)
The arachnids of the order Opiliones (harvestmen) produce substances used in defense. In the present paper, we analyzed 22 species of Gonyleptidae to explore the use of defensive substances in… Expand
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Sexually dimorphic tegumental gland openings in Laniatores (Arachnida, Opiliones), with new data on 23 species
Sexually dimorphic glands often release sexual pheromones both in vertebrates and invertebrates. Species of Laniatores (Arachnida, Opiliones) seem to depend on chemical communication but few studies… Expand
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Comparative study of the defensive behavior and morphology of the gland opening area among harvestmen (Arachnida, Opiliones, Gonyleptidae) under a phylogenetic perspective.
The arachnids of the order Opiliones (harvestmen) have a pair of scent glands opening at the sides of the body, the substances of which are used in defense. Several types of behavioral, morphological… Expand
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Sensory biology of Phalangida harvestmen (Arachnida, Opiliones): a review, with new morphological data on 18 species
Willemart, R. H., Farine, J.-P. and Gnaspini, P. 2008. Sensory biology of Phalangida harvestmen (Arachnida, Opiliones): a review, with new morphological data on 18 species. 2014Acta Zoologica… Expand
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An ethological approach to a SEM survey on sensory structures and tegumental gland openings of two neotropical harvestmen (Arachnida, Opiliones, Gonyleptidae)
We studied the sensory structures and tegumental glands of two harvestmen species, Neosadocus sp. and Iporangaia pustulosa. We also provide field data of dietary items and data on the foraging… Expand
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Reproduction and postembryonic development of Goniosoma spelaeum, a cavernicolous harvestman from southeastern Brazil (Arachnida: Opiliones: Gonyleptidae)
Summary The reproductive characteristics of trogloxenic Goniosoma spelaeum were studied directly in the field in caves of the Ribeira River Speleological Province, Sao Paulo State, south-eastern… Expand
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systematic revision of Goniosomatinae (Arachnida : Opiliones : Gonyleptidae), with a cladistic analysis and biogeographical notes
Goniosomatine harvestmen have strongly armed pedipalps, generally large bodies and, commonly, very long legs (sometimes more than 20 cm), and are distributed in the Brazilian Atlantic forest, from… Expand
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CHEMICAL AND BEHAVIORAL DEFENSES OF A NEOTROPICAL CAVERNICOLOUS HARVESTMAN : GONIOSOMA SPELAEUM (OPILIONES, LANIATORES, GONYLEPTIDAE)
Goniosoma spelaeum (Mello-Leitao 1932), a cavernicolous species in the Ribeira Valley, southeastern Brazil, was studied in the field and laboratory . The defensive behaviors were : nipping with the… Expand
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Behavioral roles of the sexually dimorphic structures in the male harvestman, Phalangium opilio (Opiliones, Phalangiidae)
Abstract: In various animal species, male sexual dimorphic characters may be used during intrasexual contests as ornaments to attract females, or to hold them before, during, or after copulation. In… Expand
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Comparative study of the morphology of the gland opening area among Grassatores harvestmen (Arachnida, Opiliones, Laniatores)
Arachnids of the order Opiliones (harvestmen), which includes around 6000 species, have a pair of scent glands that open at the sides of the body, producing substances used as defence. Several types… Expand
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