tetranychus urticae ( red spider mite or two-spotted spider mite). it is a pest.

acari agriculture animal arachnid background biology closeup colony crops cucumber damage dangerous disease dry feed feeding food garden gardening green greenhouse group habitat horticulture illness infestation insect leaf leaves macro magnification microscope microscopic mite mites nature nymph parasite pest pesticide pests plant-feeding plants problem red shows sick sickness small species spider spots spotted stippling suck symptom tetranychidae tetranychus tiny two-spotted twospotted urticae vegetables watermelon weakness web