Navigation Links
Mysterious purse-web spiders rediscovered and photographed in South Africa
Date:5/17/2011

A team of researchers from the University of the Free State in South Africa (Ren Fourie and Charles Haddad) and the Royal Museum for Central Africa in Belgium (Rudy Jocqu) discovered very poorly known purse-web spiders of the genus Calommata in Africa. Four of the species described are new to science. The study was published in the open access journal ZooKeys.

What is really unique about purse-web spiders is that, in contrast to trapdoor spiders, they do not construct a structure to close the burrow. Instead, they build a purse-shaped web of dense silk that covers a chamber in which the spider waits for wandering prey to step on the web, before impaling it from beneath with its exceptionally long fangs.

Little is known on the biology of these small spiders as they are extremely difficult to locate in nature. The burrows of the African species have never been photographed, and the first ever photograph of a live African Calommata male, captured in a pitfall trap, was taken only last year by Ian Engelbrecht. The spider shown on the photo (Calommata transvaalica male) is only 6.3 mm in length.

"While Calommata spiders have been collected elsewhere in Africa throughout the last century, albeit on rare occasions, our study was prompted by the recent rediscovery of these spiders in South Africa, nearly eight decades since the last specimen was collected here in 1923. Currently six African species are recognised, with an additional six species from East Asia and Israel." the author Charles Haddad said.

The new discovery is expected to shed light on the evolutionary history of these spiders, known from two distant geographical regions, and to draw attention to the urgent need for their conservation. These spiders are mostly threatened by habitat loss and urbanization.


'/>"/>

Contact: Charles R. Haddad
haddadcr@ufs.ac.za
Pensoft Publishers
Source:Eurekalert  

Page: 1

Related biology news :

1. Mysterious microbe may play important role in ocean ecology
2. Mysterious microbe plays important role in ocean ecology
3. Rooted plants move mysteriously down greenways, scientists say
4. Findings uncover new details about mysterious virus
5. Scripps scientists help decode mysterious green glow of the sea
6. Rediscovery: MBL scientists confirm role for mysterious cell component, the nucleolinus
7. Rensselaer professor uncovers mysterious workings of cholera bacteria
8. Probing the mysterious second-wave of damage in head injury patients
9. Scientists unravel the mysterious mechanics of spider silk
10. Research outlines mysterious evolution of nematodes -- one of Earth’s first animals
11. Moving in for the winter toxic brown recluse spiders pose danger
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mysterious purse-web spiders rediscovered and photographed in South Africa
(Date:6/30/2017)... June 30, 2017 Today, American Trucking ... supplier of face and eye tracking software, became ... provider program. "Artificial intelligence and ... to monitor a driver,s attentiveness levels while on ... able to detect fatigue and prevent potential accidents, ...
(Date:5/16/2017)... , May 16, 2017  Veratad Technologies, LLC ... of online age and identity verification solutions, announced today ... Identity Conference 2017, May 15 thru May 17, 2017, ... Building and International Trade Center. Identity ... globe and in today,s quickly evolving digital world, defining ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... (PRWEB) , ... July 20, 2017 , ... Dr. Asher ... the winning recipients of the 2017 IAC Awards at the 22nd World Congress on ... committee also named four faculty to receive the Distinguished Fellowship Awards. , Dr. Asher ...
(Date:7/20/2017)... Massachusetts (PRWEB) , ... July 20, 2017 , ... ... a multi-part seminar on digital pathology and artificial intelligence Tuesday, July 25, during ... Dr. Alexander Baras from Johns Hopkins Medicine. , Baras, Associate Director of ...
(Date:7/20/2017)... ... July 20, 2017 , ... Crucial Data Solutions (CDS) is ... participants truly unified. TrialKit, a native mobile app, empowers investigators and clinicians to ... entirely on mobile devices. With TrialKit, clinical researchers can utilize Core Motion technologies ...
(Date:7/18/2017)... ... July 18, 2017 , ... Genedata, a ... leading science and technology company, has implemented Genedata Biologics ™ to scale-up ... of Oncology, Immunology, and Neurodegenerative Diseases. , The need to systematically evaluate large ...
Breaking Biology Technology: