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:3/30/2017)... ANGELES , March 30, 2017  On April ... Hack the Genome hackathon at Microsoft,s ... exciting two-day competition will focus on developing health and ... Hack the Genome is the ... been tremendous. The world,s largest companies in the genomics, ...
(Date:3/28/2017)... , March 28, 2017 ... Biometrics), Hardware (Camera, Monitors, Servers, Storage Devices), Software (Video ... and Region - Global Forecast to 2022", published by ... in 2016 and is projected to reach USD 75.64 ... 2017 and 2022. The base year considered for the ...
(Date:3/23/2017)... PUNE, India , March 23, 2017 The report ... Equipment, Touchless Biometric), Industry, and Geography - Global Forecast to 2022", published by ... growing at a CAGR of 29.63% between 2017 and 2022. ... ... Logo ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... firm Parks Associates announced today that Tom Kerber , ... Meeting , October 11 in Scottsdale, Arizona . Kerber ... smart safety and security products impact the competitive landscape. ... Parks Associates: Smart Home Devices: Main Purchase Driver ... "The residential security market has experienced continued growth, and the introduction ...
(Date:10/9/2017)...  BioTech Holdings announced today identification and patenting ... stem cell therapy prevents limb loss in animal ... that treatment with ProCell resulted in more than ... to standard bone marrow stem cell administration.  Interestingly, ... of therapeutic effect.  ...
(Date:10/9/2017)... Texas (PRWEB) , ... October ... ... study published on October 5, 2017, in the medical journal, Epilepsia, Brain ... with the gold standard, video EEG, in detecting generalized tonic-clonic seizures (GTCS) ...
(Date:10/6/2017)... ... October 06, 2017 , ... The ... and technology sector at their fourth annual Conference where founders, investors, innovative practitioners ... and the ELEVATE pitch competition showcasing early stage digital health and med tech ...
Breaking Biology Technology: