| 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. | |||
| 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.