Sweetpotato spider mite

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Scientific name: Tetranychus marianae McGregor

Other name: Vine spider mite


White feeding punctures on leaves caused by sweetpotato spider mite (E. Vasquez).


Sweetpotato spider mites produce webs between leaf lobes and petiole (E. Vasquez).

Diagnostic summary

  • What they do to plants

- adults and nymphs suck  sap from leaves.


- produce webs on the undersurface of leaf.

  • What you see on plants

- feeding punctures on leaves become chlorotic and appear as conspicuous whitish to yellowish stipplings  or dots at the upper surface of leaf.


- under heavy infestation, the chlorotic areas may coalesce so that  leaves eventually turn yellow and may drop prematurely.

  • Widespread in the Pacific Islands and also found in Southeast Asia, Caribbean and the Americas.

  • Eggs are deposited singly and scattered on the lower surface along or near the leaf midrib or veins.


Economic importance

Geographical distribution



Biology and ecology

Detection and inspection

Host range




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