Insects & other Arthropods David A Kendall   BSc PhD
E-Mail: kendalluk@aol.com
Order Opiliones (Harvestmen or Harvest Spiders) Class: Arachnida

Harvestmen, sometimes called Harvest Spiders, are often confused with the True Spiders, but are easily distinguished from the latter by their globular body which has no obvious constriction or 'waist' between the front section (the cephalothorax or prosoma) and the hind section (the abdomen or opisthosoma). Also, unlike true spiders, the abdomen is clearly segmented and lacks spinnerets (silk-producing organs) at the tail-end. Harvestmen possess the usual arachnid appendages - chelicerae (jaws) and palps (leg-like sensory structures) at the front, and four pairs of walking legs articulated to the cephalothorax. Most species have very long legs, with the second pair always the longest. There are two simple eyes, often perched on a raised turret, near the middle of the cephalothorax.

Leiobunum sp.
Leiobunum sp. - a Harvestman (male)
b. 3-4 mm
Leiobunum sp.
Leiobunum sp. - a Harvestman (male)
b. 3-4 mm (detail of body)
Leiobunum sp.
Leiobunum sp. - a Harvestman (male)
b. 3-4 mm (detail of body)
Leiobunum sp.
Leiobunum sp. - a Harvestman (female)
b. 4-7 mm
Leiobunum sp.
Leiobunum sp. - a Harvestman (female)
b. 4-7 mm (detail of body)
Opilio sp.
Opilio sp. - a Harvestman
b. circa 5 mm
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