Predatoroonops

Predatoroonops is a genus of goblin spiders endemic to the Brazilian Atlantic Forest. The genus is characterized by the extremely modified male chelicerae and long pairs of ventral spines. It is the first fully revised endemic Brazilian genus of spiders, uncovered in 2012 after two and a half years of research at São Paulo's Instituto Butantan.

Predatoroonops
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Oonopidae
Genus: Predatoroonops
Brescovit, Rheims & Ott in
Brescovit, Bonaldo, Santos, Ott & Rheims, 2012[1]
Species

See text

The generic name is in honor of the Predator from the eponymous 1987 film, as the researchers found the spiders' chelicerae similar to the creature's unmasked face. All the specific names of the genus reference the film's cast, crew or fictional elements.

Discovery

Predatoroonops was first published in the Bulletin of the American Museum of Natural History in June 2012.[1] The genus is composed of seventeen new species.[2] They are unique for the peculiar morphology of the male chelicerae and the lateral anterior borders of the carapace.[1]

Members of the genus (all of which are endemic to Brazil) were discovered by a team of Brazilian scientists as part of the Planetary Biodiversity Inventory (PBI) project on the goblin spider family (Oonopidae).[3] The team consisted of Alexandre B. Bonaldo, Adalberto J. Santos, Ricardo Ott, and Cristina A. Rheims. It was led by the arachnologist Antonio Domingos Brescovit of Instituto Butantan, who has been studying spiders in the Brazilian Atlantic Forest since 2006.[4] According to Brescovit, the research took two and a half years. Publication was delayed because of the 2010 fire at the Instituto Butantan which destroyed a major part of the institute's specimen collections.[2][5]

Physiology

Members of Predatoroonops are small, ranging from 1.8 to 2.1 mm (0.071 to 0.083 in) in size.[4] They are distinguished by the projected and articulated chelicerae of the males, the conspicuous posterior receptacle of the genitalia of the females, and the spines with pronounced bases on the legs of both sexes.[1] They are usually found in the plant litter on the forest floor.[4] Information on diet and behavior is currently unknown, however, given that all the research was done with dead specimens.[6]

Taxonomy

Predatoroonops schwarzeneggeri, sp. nov., is the type species of the genus.[7] The generic name is a contraction of "Predator Oonops", in reference to the creature of the 1987 film Predator, as the scientists found the distinguished male chelicerae similar to the Predator's unmasked face. The specific names honor the film's cast, crew and elements.[1] For instance, actor Arnold Schwarzenegger, who played protagonist 'Dutch' Schaeffer, was homaged with both Predatoroonops schwarzeneggeri and Predatoroonops dutch.[2]

Two species groups within Predatoroonops were proposed, based on the presence or absence of a median furrow in the frontal median area of the male chelicerae. The schwarzeneggeri group presents both median and subdistal furrows, and a long lateral sclerotized groove at the anterior lateral border of the carapace in males; the peterhalli group lacks the median and distal furrows, and its species have the anterior lateral border of the carapace with an attenuated groove. The closest relatives of Predatoroonops are in the genera Orchestina and Cavisternum.[1]

Species
Species of Predatoroonops
Species Author Distribution Etymology
Group schwarzeneggeri
P. anna[1]:37 Brescovit, Rheims & BonaldoBahiaAnna Gonsalves, a guerrilla played by Elpidia Carrillo
P. billy[1]:26-9 Brescovit, Rheims & OttRio de JaneiroSgt. Billy Sole, played by Sonny Landham
P. blain[1]:31-2 Brescovit, Rheims & OttBahiaSgt. Blain Cooper, played by Jesse Ventura
P. dillon[1]:45-8 Brescovit, Rheims & BonaldoAlagoasCapt. George Dillon, played by Carl Weathers
P. dutch[1]:39–45 Brescovit, Rheims & BonaldoBahiaMajor 'Dutch' Schaeffer, the film's protagonist, played by Arnold Schwarzenegger
P. maceliot[1]:32-7 Brescovit, Rheims & OttSão PauloSgt. 'Mac' Elliot, played by Bill Duke
P. poncho[1]:24-6 Brescovit, Rheims & OttRio de JaneiroLt. 'Poncho' Ramirez, played by Richard Chaves
P. rickhawkins[1]:37-9 Brescovit, Rheims & BonaldoEspírito SantoSgt. Richard Hawkins, played by Shane Black
P. schwarzeneggeri [1]:20-1 Brescovit, Rheims & OttRio de JaneiroArnold Schwarzenegger, the lead actor from Predator
P. vallarta[1]:48–50 Brescovit, Rheims & Bonaldo, 2012Rio de JaneiroPuerto Vallarta, Mexico, one of the filming locations for Predator
P. valverde[1]:29–31 Brescovit, Rheims & Ott, 2012Rio de JaneiroVal Verde, the fictional country where Predator takes place
Group peterhalli
P. chicano[1]:61-7 Brescovit, Rheims & SantosEspírito SantoAn alternate nickname for Poncho given his Mexican-American origin
P. mctiernani[1]:61-2 Brescovit, Rheims & SantosSão Paulo, Rio de Janeiro, Santa CatarinaJohn McTiernan, director of Predator
P. olddemon[1]:67-9 Brescovit, Rheims & SantosRio de JaneiroAnna says the Predator was referred in her village as a "demon who makes trophies of men"
P. peterhalli[1]:60-1 Brescovit, Rheims & SantosSão PauloKevin Peter Hall (1955–1991), the actor who played the Predator
P. phillips[1]:51-7 Brescovit, Rheims & SantosBahiaGeneral Homer Phillips, played by R.G. Armstrong
P. yautja[1]:57–60 Brescovit, Rheims & SantosMinas GeraisThe name used for the Predator species in the expanded universe

References
  1. Brescovit, Antonio Domingos; Bonaldo, Alexandre B.; Santos, Adalberto J.; Ott, Ricardo; Rheims, Cristina A. (21 June 2012). "The Brazilian goblin spiders of the new genus Predatoroonops (Araneae, Oonopidae)" (PDF). Bulletin of the American Museum of Natural History. 370 (370): 1–68. doi:10.1206/766.1. hdl:2246/6186. S2CID 84026292.
  2. Dieiro, Bruno (7 August 2012). "Instituto Butantan identifica 17 novas espécies de aranha". O Estado de S. Paulo (in Portuguese). Archived from the original on 31 December 2012. Retrieved 12 January 2013.
  3. "Planetary Biodiversity Inventory: The Spider Family Oonopidae". American Museum of Natural History. Retrieved 12 January 2013.
  4. Varella, Marco (10 August 2012). "Filme 'O Predador' inspira batismo de 17 espécies de aranhas no país". Folha de S. Paulo (in Portuguese). Retrieved 12 January 2013.
  5. Sampaio, Rafael (8 August 2012). "Butantan batiza 17 novas aranhas em homenagem ao filme 'Predador'" (in Portuguese). G1. Retrieved 12 January 2013.
  6. Sil, Felipe (9 August 2012). "Butantan descobre 17 novas espécies de aranhas". O Globo (in Portuguese). Retrieved 12 January 2013.
  7. Brescovit, Antonio (21 June 2012). [: http://hdl.handle.net/2246/6186 "The Brazilian goblin spiders of the new genus Predatoroonops (Araneae, Oonopidae)"] Check |url= value (help). Bulletin of the American Museum of Natural History. 370: 1–68. doi:10.1206/766.1. S2CID 84026292.
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