Flat spiders hunt by night and are partial to climbing verticle surfaces. Hide under rocks or in crevices by day. |
Another Flattie Spider, this one a male, apparently. Gray with intricate markings in darker gray. |
Fine silk strands extend outward from the sitting spider. Anything that stumbles over them will triger an attack. Nocturnal. |
A nearly invisible web directly against the substrate surrounds a spider that also blends in with camouflage. Two long spinneretes. |
This spider makes a loose web in dark areas of building, caves. Violin mark on back. Long legs held flat on surface. |
Very, very long legs on a spider that builds an irregular web in and near building or basements. |
Large, dull black spiders that use retreats in cracks/gaps of walls in houses. Web appears very white due to fine, hackled threads. Not prone to bite people. |
Uses a flat sheet web to capture insects and hides in a narrowed tunnel at one corner. Males leave webs in search of females. Eight small eyes. |
The spider hides in a crevice with a large funnel web extending outwards. The bold black and white markings on this spider are unique. |
This one does not even look alive ... it plays dead until the predator or disturbance moves on. |
A colorful spider with conspicuous body armour. Sits at the center of an orb web erected between branches of vegetation. |
Often hides during day but sits at center of an orb web at night. Many species. Head faces down in this photo. |
Sits at center of circular orb web by night. Large, mostly uniform gray species. |
By day this spider hides under a leaf where the green and white match the leaf. |
Very large spiders that spin webs between trees or even across trails or high above a road. Silk very strong and yellow. |
Dark brown spider with red hour-glass mark and an irregular web. Hides in crevice during the day. |
Superb eyesight gives these active spiders abilities to travel and explore. This one's looking for a female. |
This jumping spider was crawling on man-made concrete. Pattern is checkered blac and white. |
Jumping Spiders do not use silk webs to catch prey. Instead they have superb eyesight and spring onto their prey and quickly deliver the bite. |
This boldly marked salticid was hunting in the leaf litter of a farm plot. |
Parts of this spider's marking are reflective and irridescent and might make it difficult to focus on. |
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Four big eyes towards the front of carapace. Runs across soil surface. Mostly nocturnal. |
Slowly patrolling ground at night in a seasonally dry woodland without use of a web. |
This large (18 mm) spider has whitish legs and markings that match sun-bleached stems of grass. |
In areas with light-colored soil, cursorial ground-dwelling spiders also tend to be light-colored. |
A cursorial spider about 12mm long. Narrow cephlothorax. |
These large, fast, running spiders tend to live near water and can even skate across the surface. |
Sitting on a flower of the same color the spider can ambush a visiting bee or fly. No snare is built. |
Coloration often matches the plant part upon which it sits and waits for flower-visiting prey. |
First two pair of legs are rotated forward and the spider tends to walk sideways like a crab. Hunts w/o a web. |
Sac spiders spend the day inside a closely woven sac often within a folded leaf. Hunts at night w/o a web. |
Ground spiders spend the day inside silken retreat on or near the ground. Spinnerets extend posteriorly. Hunts at night w/o a web. |
These free ranging arachnids do not spin webs and are not venomous. Their super-long legs look improbable, yet this lineage has survived 400 million years. |
Pale, raised blisters on the upper surface of leaves of Clerodendron shrubs. Mites live and feed inside the galls. |
The galls on an Acanthus polystachyus leaf are likely caused by minute mites feeding and reproducing inside the plant tissue. |
These mite galls are bright red partly because chlorophyl is not being produced in the tissue. |
The mite galls on this Urtica leaf are purplish-brown. Stinging nettle has prickles tipped with painful neurotoxins. |
The mite galls on this Hibiscus flavifolius leaf are pale green. |
The arachnids that cause these leaf blisters are very small, requiring magnification. They live inside the blisters. |
Copyright Michael J. Plagens, 2010-2017.
By no means am I an expert on the Natural History of Kenya. I am a novice exploring this part of the World. By creating a page for the species as I encounter them I am teaching myself. If I make errors I expect that a kind person will let me know so that I can make corrections.