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Spider Photos - Dew Drop Spiders

Spiders of the genus Argyrodes (Theridiidae), also called dewdrop spiders, occur worldwide. They are best known as kleptoparasites: they steal other spiders' prey. They invade and reside in their host's web even though they can spin their own webs. 

However, the relationship can sometimes be commensal or even mutual since the dewdrop spider can feed on small trapped insects that are not eaten by the host.  Some species can even prey upon the host.  Many species are black with silvery markings. Most species are relatively small. For example, A. incursus has a body length of 34.5 mm while A. fissifrons has a body length of about 12 mm.

The Dew Drop Spider is a tiny spider and has a conical abdomen that is mostly silver in colour. In Australia it is often found sharing the web of the much larger spiders such as the Golden Orb Weaver (Nephila sp.) and Garden Orb Weaver (Eriophora sp.). They shine like drops of dew in the large web of the Orb Weaver. They build their small egg sacs near the edge of the Orb Weaver's web.

The Dewdrop Spider is also known as the Quicksilver Spider because of their bright silver abdomen, however these are minute spiders, being no larger than a match head and so are not noticed unless sought. Small size can nevertheless still be an advantage in making a living, for these are kleptoparasitic, which means parasitism by theft and they live permanently as a parasite in the webs of large orb-weaving spiders but they will also occupy other spiders webs. What the Dewdrop Spider seek are large permanent webs made by large docile spiders. These small spiders actually do the large spiders (whose web they cohabit) a favour by keeping the web clean of tiny flying insects that are much too small for the larger spider to be bothered with, however the dewdrops are not too timid to take a share of the larger spiders meal and will even partake at the same time. The dewdrop spider is quite communal and webs can be occupied by several individuals, but being so small, having others on relatively vast webs that can stretch for 2-3 metres, any disruptive interaction over territory is probably unlikely.

Wikipedia

 Here's some photos sent in by viewers.

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Unidentified Spiders 2009 (2) Unidentified Spiders 2008 (1) Unidentified Spiders 2008 (2)
Unidentified Spiders 2007 (1) Unidentified Spiders 2007 (2) Unidentified Spiders 2007 (3)
Unidentified Spiders 2006 (1) Unidentified Spiders 2006 (2) Unidentified Spiders 2006 (3)
Unidentified Spiders 2005 (2) Unidentified Spiders 2005 (3) Unidentified Spiders 2005 (1)
Unidentified Spiders 2004 (1) Unidentified Spiders 2004 (2) Unidentified Spiders 2003
Unidentified Spiders 2002 Unidentified Spiders 2001  
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Argiopes/St. Andrew's Cross Barn Funnel Weaving Spider Basilica  Spiders
Bird Dropping Spiders Black House Spiders Bolas Spiders
Brown Recluse Spiders Candy Stripe Spiders Common House Spider
Crab Spiders Cyclosa Conica Daddy Long Legs
Daring Jumping Spiders Dew Drop Spiders Fishing Spiders
Funnel Web (Aus) Furrow Spider Garden Orb Weavers
Ghost Spider Giant House Spider Golden Orb Weavers
Grass spiders/Funnel Weavers Ground Spiders Hacklemesh Weavers
Hobo Spiders Huntsman Spiders Jewelled Spiders
Jumping Spiders Ladybird Spiders Leaf Curling Spiders
Long Jawed Orb Weavers Lynx Spiders Marbled Orb Weavers
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Net casting Spider Nursery Web Spiders Parson Spiders
Pirate Spiders Pseudoscorpion Purseweb Spider
Red & Black Spiders Redback Spiders Red Spotted Ant Mimic Spiders
Running Crab Spiders Scorpion Spiders Segestria Florentina
Solfugids/Camel Spiders Southern House Spiders Spider Tats
Spitting Spiders Steatoda Tailless Whip Scorpions
Tarantulas Tengellid Spiders Trapdoor Spiders
Two Spined Spiders Venusta Orchard Spiders Wandering Spiders
White Tailed Spiders

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Woodlouse Hunters Yellow & Broad faced Sac Spiders Zoropsis spinimana
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16 May, 2014:
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