Find
Map
Post
Aa
username
X
password
register help
Get your photos on this page
Harvestmen3 locationsInsect/Spider
.: PatrickL :.
Mar 28 2011
Peak 2110 - White Tank Mountains
.: beterarcher :.
Mar 16 2013
Gilbert Riparian Preserve
TypeInsect/Spider
FamilyOpiliones - Harvestmen
Images Bing, Google

Opiliones

Common Names:Daddy Longlegs, Granddaddy Longlegs

Description: These arachnids are known for their exceptionally long walking legs, compared to body size, although there are also short-legged species. The difference between harvestmen and spiders is that in harvestmen the two main body sections (the abdomen with ten segments and cephalothorax, or prosoma and opisthosoma) are broadly joined, so that they appear to be one oval structure; they also have no venom or silk glands. In more advanced species, the first five abdominal segments are often fused into a dorsal shield called the scutum, which is normally fused with the carapace. Sometimes this shield is only present in males. The two most posterior abdominal segments can be reduced or separated in the middle on the surface to form two plates lying next to each other. The second pair of legs are longer than the others and work as antennae. This can be hard to see in short-legged species.

The feeding apparatus (stomotheca) differs from other arachnids in that ingestion is not restricted to liquid, but chunks of solid food can be taken in. The stomotheca is formed by extensions from the pedipalps and the first pair of legs.

They have a single pair of eyes in the middle of their heads, oriented sideways.They are mostly nocturnal and colored in hues of brown, although there are a number of diurnal species which have vivid patterns in yellow, green and black with varied reddish and blackish mottling and reticulation.

Comments: As of December 2011, over 6,500 species of harvestmen have been discovered worldwide. Although they belong to the class of arachnids, harvestmen are not spiders, which are of the order Araneae rather than the order Opiliones.

An urban legend claims that the harvestman is the most venomous animal in the world, but possesses fangs too short or a mouth too round and small to bite a human and therefore is not dangerous (the same myth applies to Pholcus phalangioides and the cranefly, which are both also called a 'daddy longlegs'). This is untrue on several counts. None of the known species of harvestmen have venom glands; their chelicerae are not hollowed fangs but grasping claws that are typically very small and definitely not strong enough to break human skin.

Many species are omnivorous, eating primarily small insects and all kinds of plant material and fungi; some are scavengers, feeding upon dead organisms, bird dung and other fecal material. This broad range is quite unusual in arachnids, which are usually pure predators.


Source: Wikipedia





  All Months
7 Photos
Jan
0
Feb
0
Mar
2
Apr
0
May
0
Jun
0
Jul
0
Aug
0
Sep
1
Oct
1
Nov
0
Dec
3
 




About
FAQ
contact
New shirt!


Information on this page has been gathered from member submissions. Effort has been made to avoid any infringement of copyright. Additionally, any use is anticipated to be within the "fair use" doctrine. If any copyright has been infringed, please notify the webmaster. The disputed information will be removed and your issue will be resolved. If you are a submitting member, please inform and discuss with HAZ if you think you are submitting any copyright issue. Please help us stay with the law.