Poecilotheria fasciata

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Sri Lanka ornamental tarantula
Narodni muzeum 9490-1.jpg
Specimen in the Národní museum
CITES Appendix II (CITES) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Mygalomorphae
Family: Theraphosidae
Genus: Poecilotheria
Species:
P. fasciata
Binomial name
Poecilotheria fasciata
(Latreille, 1804) [2]
Synonyms [2]
  • Mygale fasciataLatreille, 1804
  • Scurria fasciata(Latreille, 1804)

Poecilotheria fasciata, the Sri Lanka ornamental or Sri Lanka ornamental tiger spider, [3] is a large arboreal tarantula. It is endemic to central Sri Lanka.

Contents

Size

Females are 6–7 cm from head-to-body, whereas males are smaller usually 4–5 cm.

Identification

Poecilotheria fasciata can be identified from other tiger spiders due to very narrow dark band on the femur of first pair of legs and by thin broken band on femur of fourth pair of legs. [4]

Female

Dorsally black, white and grey cryptic markings all over the legs and body. Carapace has two black lines. Opisthosoma has a light grey foliate median band runs the entire length of opisthosoma. Inside large foliate markings, there is a slightly darker median band.

Ventrally body is black. First and second leg pairs possess identical markings, which have yellow color bands. Third leg pair has bluish grey femur with a proximal black patch. Patella is blue grey with a thin black band distally. Fourth leg pair has bluish grey femur with a thin black band. [4]

Male

Dorsally uniform brown colored with less intense markings. Opisthosoma has a dark median black line divided by distinct diamond-shaped chevrons.

All four pairs of legs are identically marked as female but with slight variations. [4]

Ecology

Found in dry zone and intermediate zones of Sri Lanka. Mostly abundant in tree hollows, tree barks, coconut trees, banana plantations and sometimes in human dwellings. Male is nomadic, whereas female is not. When disturbed, they are very defensive and nimble. [4]

Conservation

P. fasciata was listed as an endangered species for protection under the U.S. Endangered Species Act in 2018. [3] The major factor cited in support of the designation was habitat loss within this species' small area of occupancy (less than 500 square kilometres or 190 square miles), worsened by collection for the pet trade, use of pesticides, killing out of fear, climate change and random effects. [3] : 36764–36767 

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References

  1. ↑ "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  2. 1 2 "Taxon details Poecilotheria fasciata (Latreille, 1804)". World Spider Catalog. Natural History Museum Bern. Retrieved 29 February 2016.
  3. 1 2 3 83 FR 36755
  4. 1 2 3 4 Nanayakkara, Ranil P. (2014). Tiger Spiders Poecilotheria of Sri Lanka. Colombo: Biodiversity Secretariat, Ministry of Environmental & Renewable Energy. p. 167. ISBN   978-955-0033-58-4.
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