Spiders belong to the class Arachnida. Arthropods such as
scorpions, harvestmen, ticks and mites are also among that group.
The rear body is softer than the front. They have eight legs. The first
pairs of legs are the longest. No real antennae but palps.
Most of the spiders have eight eyes. But there are also spiders withesix
eyes. The eyes are not as great.
They are predators. Their method of hunting is different.
Wheel-shaped webs are best known.
Not all spiders us webs to hunt. The bite of spiders in the Netherlands is
not dangerous for humans.
More information can be found at wikipedia
Family orb-weaver spiders (Araneidae)
These spiders make spiral wheel-shaped webs
European garden spider, diadem
spider, or cross spider (Araneus diadematus) Family orb-weaver
spiders (Araneidae)
At the end of the
summer the garden is full of webs. Many webs are from the European garden
spider. They often span a great distance.
The females are adult in the second year of
their lives. They are much larger than the males. That is at the end of
the summer. Hence the many big webs. The mating is risky for the males,
for they can be eaten by the female.
When it is freezing the adult spiders die.
The eggs are in cocoons and are deposited in
autumn. This way they hibernate. The young spiders, which hatch in the
spring, release long silken threads to travel on the wind to other
areas. (ballooning)
Cross spider because of the the white dots on its
back forming a cross. Its colour is from light yellow to dark grey.
Length 11 - 18 mm.
Western Europe, parths of North America
German: Gartenkreuzspinne French: épeire
diadčme
Walnut Orb-Weaver Spider
(Nuctenea umbratica) Family orb-weaver
spiders (Araneidae)
Walnut Orb-Weaver Spiders have a flattened body, with a leathery skin.
The spider on the photo was
on top of the window. It felt threatened by me. When it failed
to hide, it let itself down to the ground on a safety line. Then it
pretended to be dead. It folded its legs around.
The spiders are nocturnal and shy by day. It is hiding under the loose bark of trees. You also
often find the spider around houses.
The web looks like the web of a cross spider. From the web the spider
makes a signaling thread to the hiding place. After dusk it sits in the
center of the web. Especially moths should
beware.
Length male 9 mm lang, female 14 mm.
A common spider in Central Europe.
The spider on this photo is very dark. But the color
ranges from red brown to grey brown. On its body a leaf-like marking.
Photo 28-5-2010. AWalnut Orb-Weaver Spider
with the leaf-like marking.
German: Spaltenkreuzspinne French: épeire
des fissures
Araniella spec. Family orb-weaver spiders (Araneidae)
The Araniella cucurbitina and the Araniella
opisthographa are not to distinguish from a photo.
They are recognizable by the yellow-green back body.
In July, the eggs are laid in cocoons near the web. The very young spiders
are light in color. In the autumn they are red, brown. A good camouflage
among autumn leaves. They hibernate.
Males 5 mm, females 8 mm.
Small webs. Approximately 10 cm diameter.
German: Kürbisspinnen French: épeire
concombre
Zygiella x-notata Family orb-weaver
spiders (Araneidae)
You can find the webs of this spider often in window
frames
The web has to the top in the corner two sectors without connecting threads
The eggs in a cocoon hibernate. The spiderlings
hatch next spring.
Males 7 mm, females 11 mm.
German: Sektorspinne, Sektorenspinne French: épeire
des fenętres
Mangora acalypha Family orb-weaver
spiders (Araneidae)
An easily recognizable spin. By the spots on the body and the black border and center stripe on the carapace..
Webs on bushes and low vegetation.
Male 3 - 3,5 mm, female 5,5 - 6 mm.
The Palearctic regions.
German: Streifenkreuzspinne
Family Stretch spiders (Tetragnathidae)
Stretch spiders have an elongated body form. They have
long legs. They can camouflage themselves well on a stem or an
elongated leaf. Than they stretch their front legs
forward and the others legs in the other direction.
The web is like a spiral wheel-shaped web, but with a hole in the middle.
Stretch spider spec. (Tetragnatha spec.)
Family Stretch spiders (Tetragnathidae)
There are similar species.
They are not to identify from a picture.
Early summer I often see them at the pond on
the leaves of the yellow iris.
Although I haven't seen it, they can walk over water.
Ph
German: Eigentlichen Streckerspinnen
Stretch spider spec. (Tetragnatha spec.)
Family Stretch spiders (Tetragnathidae)
Also this spider is not to identify from a photo.
It looks a bit different from the neighbor above. I have found this spider
five months later, in a different place. Not near the pond, but near our
house in a bush in a web. I've kept my spade behind the stretch spider to
get it better on the photo.
Photo 23-10-09
Metellina spec. Family Stretch spiders (Tetragnathidae)
Like the money spiders metellina species have a
tuning fork figure on the carapace.
Metellina mengei Length 5 mm. July - September
or Metellina segmentata. They are very similar. Despite their name they are about the same time of the year.
According Jacomijn Princen: If the ventral hairs (not the bristles) are shorter than the
diameter of the leg: It is the M. segmentata. When they are twice as long,
it is is the M. mengei. This feature applies only to males.
Photos 23-4-2010.
German: Herbstspinnen
Family tangle-web spiders, cobweb spiders or comb-footed
spiders (Theridiidae)
They have a bulbous body. Messy webs with sticky threads.
They have rows of tiny bristles on the tip of their
hind legs they use to spread out their silk. Tangle-web spiders (Theridiidae)
have a comb on the underside of the tarsus of leg IV. Tangled nest spiders(Amaurobiidae)
have a comb on the top of the metatars..
Enoplognatha
ovata or Enoplognatha latimana. Family tangle-web spiders, cobweb
spiders or comb-footed spiders (Theridiidae)
Two very similar species. The
color may vary. Always two rows of black spots.
The cocoons with eggs are light blue. You can find
them on leaves curled by spinning
Length 3 - 6 mm
Episinus angulatus Family tangle-web
spiders, cobweb
spiders or comb-footed spiders (Theridiidae)
They can stretch their front legs
forward like Stretch spiders. I found this spider on a flowerpot.
They make their H-shaped web at or near ground level
The Episinus angulatus has a flat, thin body, but
it broadens a bit near the end.
About 5 mm
Rabbit hutch spider (Steatoda bipunctata)
Family tangle-web spiders, cobweb
spiders or comb-footed spiders (Theridiidae)
The carapace is glossy shiny brown.
The Steatoda bipunctata spider is often found under trees and in or around
houses, barns and garages.
Length 4 to 7 mm
Photo 13-2-2010. A hibernating Rabbit hutch spider
under the lid of a garbage. Maybe a young spider.
German: Fettspinne
Anelosimus vittatus, Seycellocesa vittatus Family tangle-web spiders, cobweb
spiders or comb-footed spiders (Theridiidae)
Length female 3 - 3.5 mm, male 2.5 - 3.5 mm.
Low in the trees, in bushes and high vegetation.
Family sheet weavers (from the shape of their webs),
money spiders
(Linyphiidae) sheet webs with criss-cross threads above it to let the insects fall
down in the web. The spider hangs upside down under it.
Money spider (Linyphia
triangularis)
Family sheet weavers,
money spiders (Linyphiidae)
Money spiders have a
tuning fork figure on the carapace. The Linyphia,
tenuipalpis is similar, but this spider is mainly found in the
eastern Netherlands and is rarer.
The cocoons with eggs are hidden under the leaves
Last 2 photos: 7-12-2009
German: Gemeine
Baldachinspinne
Lepthyphantes minutus Genus
Lepthyphantes Family sheet weavers,
money spiders (Linyphiidae).
In any case Lepthyphantes. The species is not
certain. Recognizable by the dark carapace and striped legs.
On the site eurospiders.com
are gedetailed photos.
You can find it near tree trunks I found this spider in October under a bag
of sand.
Lepthyphantes are small spiders. This is a larger species. But still small.
Length 3 - 4 mm.
Lepthyphantes spec. Female.
Photo 16-11-09.
On the wall in the sun.
Platform hammock-spider (Neriene peltata) Family sheet weavers,
money spiders (Linyphiidae).
The back is white with a dark brown central stripe.
The adomen is striped brown and white.
Body length about 5 mm.
Male: April - July. Female: April - September
German: Waldbaldachinspinne
Familie Kaardertjes (Dictynidae)
They create a tangle of silken fibers.
Nigma walckenaeri
Family Dictynidae.
This green spider lives on leaves and is well
camouflaged. The male has a
reddish brown carapace.
As you can see on the photos it makes very fine cobwebs. From the curled
leaves it makes a shelter by cobwebs.
The male stays with the female and there is no no danger, it is eaten by the
female, like most other spiders. But when it dies, it is still eaten.
Length 3 - 5 mm.
Adults in August - Oktober.
German: Grüne Lauerspinne, Grüne Kräuselspinne
Family Vibrating Spiders (Pholcidae)
Spiders with a small body and very long legs. They make messy, irregular,
tangled webs
Daddy-long-legs spider, cellar
spider or skull spider, vibrating
spider, house spider (Pholcus
phalangioides) Family Pholcidae
The spider has got its name vibration spider, because it is shaking when
it is threatened.
Just like in our house you can vind this spider in most houses and barns. Often in dark places.
They make a rather messy web. Often near the ceiling. When the web is
dirty, they make a new one. They don't eat their own web like many other
spiders. My wife is not very happy with these webs.
The spider throws tough web material over the victim in the web until it is
harmless.
The eggs are held together with a few wires. The female hold the eggs in
her pedipalps
Body length females: about 9 mm. Males are slighty
smaller.
German: Große Zitterspinne French: Pholque phalangide
Family tangled nest spiders, night spiders,
hacklemesh weavers (Amaurobiidae) Night spiders because they are active at night.
They make wooly combed catching silk. It is a not sticking, messy web, but
when the victim in the web tries to free itself, it becomes even
more tangled into the stretching, wooly silk. With a
comb on the rear legs the spider comb the silk wooly. Tangled nest
spiders(Amaurobiidae)
have a comb on the top of the metatars. Tangle-web spiders (Theridiidae)
have a comb on the underside of the tarsus of leg IV.
Window spider (Amaurobius fenestralis)or Amaurobius similis. Family tangled nest spiders, night spiders,
hacklemesh weavers (Amaurobiidae)
Both species are quite similar. The Lace webbed spider you can find in
the house. The window spider usually is outside walls around windows, but
also under bark and stones. The Lace webbed spider is often lighter.
On the abdomen, the window spider has two or three V-shaped spots. The
Amaurobius similis usually has four spots. You can't see the spots very well
on my photos.
This spider I found outside near the wall under a tile on the ground.
Length 7 to 12 mm
Last two photos: 30-4-2010. I found it in the pantry.
German: Finsterspinnen
These spiders do not use webs to capture prey.
Family Spitting
spiders (Scytodidae) and also belongs to the
family of six eyed spiders. (Haplogynae) Thet spit a poisonous silk in a zig-zaggy pattern at their prey. The prey is stuck on the surface.Distance up to about 2 cm. In the Netherlands Scytodes thoracia is the only
species.
A light brown spider with a flecked pattern of dark spots.
The spider has long legs with dark rings. The thorax is larger than the abdomen. Unlike most spiders
with eight eyes the Spitting spider has six eyes.
The silk, they spit is poisonous. In the head-thorax are silk glands, which are connected to venom glands. They also have silk glands in the body behind.
The females carry the egg mass under their body.
In the Netherlands they mainly are found in the houses, for the winters are too cold for them.
Originally they live in southern Europe.
Length 3 - 6 mm.
Photo March 2010
German: Speispinne, Leimschleuderspinne
Family wolfspiders (Lycosidae)
Some species are chasing their prey (small distances). Other wolfspiders wait
for a prey (in a burrow)
Wolf spider spec.
(Pardosa spec.)Family wolfspiders (Lycosidae)
The species can't be determined from a photo.
They are walking around in our garden in search of victims. Therefore they
have a good vision.
The females carry their egg sacs by attaching them to their spinnerets.
When the young leave the sac, they stay on the abdomen of mother.
German: Wolfspinne
Family Cell spiders, woodlouse
hunters (Dysderidae)
Woodlous spider (Dysdera crocata or
Dysdera erythrina) Family Cell spiders, woodlouse hunters (Dysderidae)
There is not much difference between
these two species. The carapace is red brown, the abdomen is white-yellow,
white-gray.
They feed on woodlice. With the elongated fangs it captures the woodlice.
(Between the segments of woodlice.)
In my garden they are under stones and wood.
Males 7 mm - 10 mm. Females 15 mm - 20 mm.
You can find these spiders almost anywhere in the world.
German: Kleine asseljäger (Dysdera
erythrina)
Family Sac Spiders (Clubionidae)
Small spiders. Usually without much colour and therefore they are difficult to
determine. They hunt at night
Sac spider spec. (Clubiona spec.) Family (Clubionidae)
The spider in the picture is still young.
You often find them among the leaves, under stones, or bark. They make at
daytime a small web (a silken tube or sac), where they hide and sleep during
the day. Such a sac they also use for the eggs
To hunt at night they use no web.
Length about 5 mm.
Photos below: In December a spider hanged on a wire in the kitchen. I've
put it in a jar, to photgraph it the next day. The next day it sat under a spinning against the glass wall. I
have awoken it for the photo. When I was finished, I have put it in the
overwintering plants.
According Jacomijn Prinsen: It is a subadult male, in the spring it will molt to adult.
Than it can be determined with the palp under the microscope. But I don't
think, I will find it back.
Now it will be Clubiona spec.
German: Sackspinnen
In the Netherlands it is the singel species of the
buzzing spiders. At night the buzzing spider hunts on the leaves of bushes and trees.
On this photo the spider is sitting on the bamboo, which is designed for masonry bees to make nests in it. I am not really happy.
Under the leaves you can find cocoons with eggs, which are guarded by the
females. The males are able to produce audible sounds by vibrating the abdomen
against the leaves (for the females).
From light brown to grayish brown. They can be identified by the triangular dark spots on the rear body.
And by the dark lateral bands on the carapace
with light spots.
In winter they sit under the bark of dead trees.
Length 4 - 8 mm
Europe, Central Asia
Photo: 18-4-2010
Family crabspiders (Thomisidae)
Like crabs crabspiders have a flat body and powerful frontlegs and they are able
to move sideways. They are oft sitting among or on leaves or flowers.
Diaea dorsata Family
crabspiders (Thomisidae)
To recognize by the green carapace and legs. A
brown with yellow abdomen.
Males 4 mm, 6 mm females.
This spider was missing a leg, but it did not bother. If it is not an
adult, it gets a new leg after molting. In dangerous situations, these
spiders and many other spiders are able to drop a leg.
Crabspiders don't make a web, but they use spider silk as security thread.
gh
the air) Photo: 21-10-09
The male Diaea dorsatahas
very long legs. Photo 16-5-2010
Family Running
Crab Spiders (Philodromidae)
Running crab spiders closely resemble crab spiders (Thomisidae), but their
second set of legs are the longest. They chase for prey. Crab spiders wait for
prey. Both species are able
to move sideways.
Philodromus spec. Family Running
Crab Spiders (Philodromidae)
What species it is, I can't say. It is able to run away sideways.
You often can see them with spread legs close to a leaf.
German: Laufspinnen
Two other Philodromus spec.
Philodromus dispar Family Running
Crab Spiders (Philodromidae)
This is the male. The male Philodromus dispar is
black or dark brown with white edges.
The female is
variable in colour. This would be the female spider with a Meal Moth (Pyralis
farinalis). I only had seen the moth. I did not understand, why the moth flew away quickly. Until I looked at
the
photo.
About 5 mm.
Philodromus aureolus Family Running
Crab Spiders (Philodromidae)
This is a male. Thin palps. Males have a metallic sheen. This
spider have a grey colour. Often it is grey with a purple sheen. Females and
young spiders have no metallic sheen. (Tan - brown)
They
can be confused with Philodromus
cespitum and Philodromus buxi.
May-August
Males: 4 to 5 mm. Females: 4 to 7 mm
The young spiders overwinter.
Photo 28-5-2010
Photo 30-5-2010 This spider is darker.
Family jumping spiders (Salticidae) Jumping spiders can jump from place to place, secured by a silk tether.
Zebra spider (Salticus scenicus) Family
jumping spiders (Salticidae)
Zebra spiders are like the zebras black with white stripes of hairs. You can
find it outside on the house walls in the sunshine. This spider can jump very well.
The four pairs of eyes are striking. In front of the head are two large and two small eyes.
Above, it has two small eyes. They therefore have a good vision a very wide field of view.
In the Netherlands there are two other species. Namely Salticus cingulatus and
Zebra Salticus nose.
They use a small white silk sac for hiding. The eggs are also laid in this
sac. The adult spider overwinters.
Length 5 - 7 mm. Widespread
throughout Europe, northern Asia and North America
A jumping spider. There are some similar
Heliophanus species in the Netherlands. A nice
small spider. I often see it early summer in the garden.
Similar species: Heliophanus cupreus,
Heliophanus flavipes
Photos 29-5-2010.
I want to thank everyone, who has helped me (waarneming.nl)
to identify. In particular, Jacomijn Prinsen en Willem
Boomkens.
Harvestmen, order Opiliones formely Phalangida,
class Arachnida
Daddy-long-legs, but this name is also used in conjunction with crane
flies and cellar spiders in the family Pholcidae.
In 2010 I will
take more photos of harvestmen. They look like spiders.
Features: The two main body sections are grown together to an oval
shaped body (difference with the spiders) They also have no venom or
silk glands. Usually they have a single pair of eyes. The second pair legs
is the longest and works as antennae or sense organs.
Most species are maturing in late summer - hence their common name.
Most harvestmen are active during the night.
Harvestmen catch small insects and other small species, but they also eat
the decays of any dead animal and all kind of plant material and fungi.
A leg (or legs) easily becomes detached from the body. This is
a means of protection from predators. When detached, a leg will
continue to twitch for some time. (sometimes even up to an hour)
They lay eggs in moist soil, under rocks or logs.
Red Harvestman, Opilio canestrinii male
Red Harvestman, Opilio canestrinii
female
Striking is the difference in
colour of the male between the orange body and the dark legs. (but
yellow "knees")
The legs of
Opilio parietinus and Opilio saxatilis are less dark. They look like the Opilio canestrinii.
The Opilio canestrinii has invated Europ fom the Apennines. Since
1993 it is found in the Netherlands. In England in 1999. It lives on
the walls. Other species at walls Opilio parietinus and Opilio saxatilis
are wiped out by the Opilio canestrinii. Most likely the eggs and
harvestmen are imported by transporting plants.
Body
length males: 4 - 6 mm. Females: 5 - 8 mm. The female is yellowish brown
to ocher. The legs has light and dark rings.The eggs are laid in autumn.
Adults June - December.
Female Red
Harvestman in December in the holly. Thank
you Arp Kruithof for your helpn.
Spring Harvestman (Rilaena
triangularis)
The spring harvestman is grown mid-April. And is therefore the first
harvestman you see in the spring.
April to June. This harvestman don't overwinter as an egg, but as a nymph.