First record of an onychophoran (Onychophora, Peripatidae) feeding on a theraphosid spider (Araneae, Theraphosidae)

  title={First record of an onychophoran (Onychophora, Peripatidae) feeding on a theraphosid spider (Araneae, Theraphosidae)},
  author={Sidclay Calaça Dias and Nancy França Lo-Man-Hung},
Abstract A velvet worm (Peripatus sp., Peripatidae) was observed and photographed while feeding on a theraphosid spider, Hapalopus butantan (Pérez-Miles, 1998). The present note is the first report of an onychophoran feeding on “giant” spider. 

A velvet worm (Onychophora: Peripatidae) feeding on a free ranging spider in Sierra Llorona, Panama

An onychophoran feeding on a spider (possibly a Ctenidae) in Sierra Llorona, Colón, Panamá is reported.

Inverted roles: Spider predation upon Neotropical velvet worms (Epiperipatus spp.; Onychophora: Peripatidae)

Apparently the worms could not expel their defensive adhesive, and the efficacy of the spider venom suggests that onychophoran nerves and muscles are biochemically equivalent to those of insects.

Record of mygalomorph spider (Araneae: Theraphosidae) predation by a scorpion (Scorpiones: Buthidae) in a Brazilian seasonally dry tropical forest

An adult female of the buthid scorpion Tityus stigmurus Thorell, 1876 was found in the Caatinga vegetation, feeding on a juvenile of the mygalomorph genus Dolichothele Mello-Leitão, 1923, which was classified to the genus level only.

Defensive Responses of Neotropical Harvestmen (Arachnida, Opiliones) to Generalist Invertebrate Predators

The most frequent defensive behavior exhibited by harvestmen was fleeing, and other behaviors included aggression, bobbing, leg autotomy, lying flat, and thanatosis, while Prionostemma exhibited the most variable responses, especially in the presence of ctenid spiders.

Feeding Frequency, Prey Acceptance, and Natural Diet of the Mygalomorph Spider Acanthogonatus centralis Goloboff 1995 (Araneae: Nemesiidae).

It is found that Acanthogonatus centralis is polyphagous since it accepts different kinds of prey, and is attacked faster than any other prey, suggesting they are a suitable prey for these spiders.

Benefits and costs of social foraging in velvet worms

Animals often live and forage in groups, though the extent of social organisation varies dramatically among taxa (Ward & Webster, 2016). The key to understanding the form, diversity and maintenance

An investigation of Onychophora (velvet worms) of the Illawarra region

A chronology of key events and figures leading to the invention of the determinants of infectious disease and its use in medicine and sport is listed.



Distribution of a Costa Rican Wet Forest Velvet Worm (Onychophora: Peripatidae)

The results of a 300-m2 search of leaf litter in a wet tropical forest at La Selva Biological Station, Republic of Costa Rica, during the dry season over a period of 4 mo suggests that reproduction occurs during the wet season.

A review of the Onychophora of South Africa, with discussion of their conservation

There are nine descriptionbed species of Onychophora (Peripatopsidae) in South Africa, two in Opisthopatus Purcell, 1899 and seven in Peripatopsis Pocock, 1894, which almost certainly form an incomplete list, as it appears that there are at least another five undescriptionbed species.

Social behaviour in an Australian velvet worm, Euperipatoides rowelli (Onychophora: Peripatopsidae)

The studies on the Australian species Euperipatoides rowelli show for the first time that onychophorans are indeed capable of complex behaviour, and suggest that its origins lie in kin recognition.

Feeding behaviour and prey choice in Macroperipatus torquatus (Onychophora)

  • V. M. S. J. ReadR. Hughes
  • Environmental Science
    Proceedings of the Royal Society of London. Series B. Biological Sciences
  • 1987
Macroperipatus torquatus feeds nocturnally on crickets and a few other invertebrates on the floor of the Trinidadian rain forest and grew better when fed on them in the laboratory, whereas juveniles grew better on smaller prey.

Reproductive biology of the onychophoran Euperipatoides rowelli

The reproductive biology of the ovoviviparous peripatus Euperipatoides rowelli was investigated, finding that females can use their paired reproductive tracts independently, and there is an approximately linear relationship between body mass and number of developing embryos.

Environmental factors influencing the presence and abundance of a log-dwelling invertebrate, Euperipatoides rowelli (Onychophora: Peripatopsidae)

Log degradation state, an important factor in the presence of animals, is associated with years since felling, and data indicate that logs become capable of supporting large populations of E. rowelli after a minimum of 45 years of decay.

Pheromonally mediated colonization patterns in the velvet worm Euperipatoides rowelli (Onychophora)

It is argued that females use the aggregating pheromone secreted by males to target appropriate rotting log microhabitats, resulting in a clumped distribution of females compared to a more random distribution for males among recently colonized logs.

A structured inventory of harvestmen (Arachnida: Opiliones) at Juruti River plateau, State of Pará, Brazil

The first structured inventory of harvestmen in the Brazilian Amazon Rain Forest was carried out at Juruti municipality, Para State. The sampling protocol was done in three plots of (1 ha each)

Onychophora in invertebrate conservation: priorities, practice and prospects

The rationale of promoting onychophorans as target taxa in invertebrate conservation and the prospects for conserving them are discussed are discussed, and priorities suggested.

Environmental factors influencing the presence and abundance of a log-dwelling invertebrate, Euperipatoides rowelli (Onychophora)

  • Journal of Zoology
  • 2000