Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:266Public Records:3
Specimens with Sequences:166Public Species:3
Specimens with Barcodes:162Public BINs:2
Species:30         
Species With Barcodes:20         
          
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Barcode data

Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Thomisus

Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Wikipedia

Thomisus

Thomisus is a genus of crab spiders (family Thomisidae) with more than 100 species described. The genus includes species that vary widely in their ecology, but the best known crab spiders are those species that people call the flower crab spiders, because they are ambush predators that feed on insects visiting flowers. The flower crab spiders are the species for which the popular name was coined, because of their crab-like motion and their way of holding their front legs in an attitude reminiscent of a crab spreading its claws as a threat.

Contents

Description and habits

In most species females are four to ten mm long, with males two to seven mm. Many are brightly colored, usually matching the color of the flower in which they are waiting in ambush.[1] Not all species are flower-dwelling, but among those that are, at least some species can change their colour over a period of some days to match the flower colour.[2] Studies suggest that bees are inclined to avoid a flower that contains a spider-sized object of a non-matching colour; whether this is specifically a mechanism for avoiding crab spiders, or simply that they are not attracted to flowers whose nectar guides are obscured however, is a more difficult question.[3] The colour changes that such species can achieve are typically in ranges of white, pink, and yellow.

Distribution

South African species of Thomisus in ambush on Lavandula, by a flower too small for her to occupy
South African species of Thomisus disturbed on Lavandula inflorescence

The distribution of Thomisus species is almost worldwide, with the notable exception of most of South America.[4]The world spider catalog Although Thomisus species can be found almost anywhere on earth, most species occur in the tropics and the warmer regions of the Old World, with fewer species in the region from New Guinea to Australia and the New World. Only T. guadahyrensis is known from South America, and only in Peru.

Species

References

  1. ^ Murphy, Frances & Murphy, John (2000). An Introduction to the Spiders of South-East Asia. City: Malaysian Nature Society. ISBN 983-9681-17-6. 
  2. ^ Filmer, Martin (1997). Southern African Spiders. City: BHB International / Struik. ISBN 1-86825-188-8. 
  3. ^ Reuven Dukas and Douglass H. Morse ; Crab spiders affect flower visitation by bees ; OIKOS 101: 157–163, 2003
  4. ^ Platnick, Norman I. (2008): The world spider catalog, version 8.5. American Museum of Natural History.

Supplementary reading

  • Murphy, Frances & Murphy, John (2000): An Introduction to the Spiders of South East Asia. Malaysian Nature Society, Kuala Lumpur.
  • Platnick, Norman I. (2008): The world spider catalog, version 8.5. American Museum of Natural History.
Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

Article rating from 0 people

Default rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!