Spider Photos - Triangulate Orbweaver
Here's some photos of those
common Garden spiders from the Orb Weaving family. My apologies if there are some Araneus on
pages where they don't belong but they are very hard to classify. Try this page for a species guide:
Orb weavers (Araneidae) are
often brightly coloured with
rounded abdomens, some with
peculiarly angled humps or
spines. However, there is
considerable variation in size,
colour and shape in this group.
They are often recognized for
building beautiful, large, round
webs, on which they rest, head
downward, waiting for prey.
The webs consist of a number
of radiating threads crossed by
two spirals. The inner spiral
begins in the centre, winds
outward, and is made of smooth
threads like the radiating
threads. It covers only the
central 1/3 of the web. The outer spiral begins at the edges
and winds inward. It is made of more elastic, sticky threads, coated with a liquid substance.
One of the largest and most commonly encountered members of this group is Argiope aurantia, the yellow garden spider
and we have photos of them on their own page.
Garden Orb Weavers are NOT dangerous (but can bite as can most
spiders) and rid your garden of many unwanted insects. They only
live for one season and die off as Winter approaches, leaving their
egg sacs behind to hatch out next Spring. Please select a section below. Here's a short video (3Mb) sent in by
species is sometimes called the
"arrowhead spider." The genus name,
Verrucosa, means "warty" and refers to
the small wartlike bumps on the abdomen.
This is the only species of Verrucosa in
the United States.
They are members of the garden orb
weaver family (araneus).
ate summer and fall woodland hikers
can count on walking into this small
spider's web. Its wheel-shaped web is
small and delicate and generally
positioned vertically. This orb weaver
probably is less common than the
spiny-bellied orb weaver, but it is just
as strikingly coloured and shaped. On
females, the carapace (head) is glossy
chocolate brown and small compared to
the similarly colored, triangular
abdomen. A triangle of colour almost
completely covers the top of the
abdomen, with the bottom angle pointing
away from the spider's head; this
triangle resembles a white, pink, or
yellow flattened drop of shiny glue.
This species rests centered in its web
head-up instead of head-down, and the
legs are often folded up against the
Males are smaller and don't look very
much like the females, as they lack the
characteristic triangle on the abdomen.
Males are rarely seen unless they are in
a female's web either courting or mating
(not including legs): 3/8 inch
Habitat and conservation:
triangulate orb weaver's habits are
similar to those of the spiny-bellied
orb weaver, Micrathena gracilis. Most
commonly seen in the woods in late
summer and early fall. The females take
advantage of the open areas of hiking
trails, which flying insects - their
prey - use as trails, too. Also often
seen in yards and other places where
trees and bushes create appropriate open
areas for them to spin their circular
weavers typically capture insects in the
sticky strands of their webs, then
deliver a bite of venom sufficient to
subdue and to begin digesting the
insides of the insect. Then they wait,
returning to the prey to ingest its
liquified contents. The close spacing of
the circles in the webs of this species
enables them to specialize in tiny
flying insects such as mosquitoes. They
are ferocious predators to small
insects, but they are completely
harmless to humans.
a general rule, spiderlings
hatch from eggs in spring and spend the
growing season eating, maturing, mating,
and laying eggs. Females are capable of
creating webs; males are not. Females
continue creating egg cases as long as
the weather holds out. As temperatures
cool in fall, their metabolism slows,
and they generally die when it freezes.
Egg cases overwinter, and spiderlings
hatch in spring.
Please select a
section below for more
21 September, 2015:
searched and searched, I can't seem to find a match for
this little guy/girl?
19 October, 2016:
A couple of pics from Southern pacific Costa Rica
Click for a larger view
21 September, 2015:
I'm sorry. Long story. Here they are.
21 September, 2015:
I was sitting in my house at my desk and noticed this little spider. It has light brown and black legs. Something light grey or silver on its back. Its playing dead. I caught it. If it's not poisonous I want to free it outside in the woods. Thank you for your help!