Like other crops cocoa can be attacked by a number of pest species including fungal diseases, insects and rodents - some of which (e.g. frosty pod rot and cocoa pod borer) have increased dramatically in geographical range and are sometimes described as "invasive species".
Bacterial diseases Bacterial diseasesCrown gallAgrobacterium tumefaciens (artificial inoculations)StripePectobacterium carotovorum
Fungal diseases Fungal and Oomycete diseasesAnthracnoseGlomerella cingulataArmillaria root rot Armillaria melleaBlack pod diseasePhytophthora capsici Phytophthora citrophthora Phytophthora heveae Phytophthora megakarya Phytophthora palmivoraBlack rootRosellinia bunodes Rosellinia pepoBrown rootPhellinus noxiusCankerPhytophthora citrophthora Phytophthora palmivora Ceratocystis fimbriataCeratocystis wiltCeratocystis cacaofunesta Ceratocystis moniliformis Ceratocystis paradoxaCollar crackArmillariella mellea Armillariella tabescensCollar rotUstulina deustaCushion gall (green-point gall)Nectria rigidiuscula Fusarium decemcellulareDiebackPhysiological, stress induced, more than 80 fungal species associated with this syndrome Frosty podMoniliophthora roreriHorse hair blightCrinipellis sarmentosaLasiodiplodia pod rotLasiodiplodia theobromae Botryodiplodia theobromaeLeaf anthracnoseColletotrichum spp.Macrophoma pod rotMacrophoma spp. Frosty pod rotMoniliophthora roreriPhytophthora pod rotPhytophthora capsici Phytophthora citrophthora Phytophthora hevae Phytophthora megakarya Phytophthora palmivoraPink diseaseErythricium salmonicolorSudden deathVerticillium dahliae Mycoleptodiscus terrestrisThread blightCeratobasidium kolerogaTrachysphaera pot rot (mealy pod) Trachysphaera fructigenaVascular streak diebackOncobasidium theobromaeViolet root rotNectria mauritiicola Sphaerostilbe repensWet root rotGanoderma philippiiWhite root rotRigidoporus microporus Rigidoporus lignosusWhite threadMarasmiellus scandensWitch's broomMoniliophthora perniciosa
Miscellaneous diseases Miscellaneous diseasesAlgal disease Cephaleuros virescensCherelle wiltPhysiological, no specific pathogen involved
Insect pests Cocoa mirids or capsids worldwide (but especially Sahlbergella singularis and Distantiella theobroma in West Africa and Helopeltis spp. in Southeast Asia) Bathycoelia thalassina - West Africa Conopomorpha cramerella (cocoa pod borer – in Southeast Asia) Carmenta theobromae - C. & S. America
Nematodes, parasitic Nematodes, parasiticAwl nematodeDolichodorus spp.Cyst nematodeHeterodera spp.Dagger nematodeXiphinema spp.Lesion nematodePratylenchus spp.Reniform nematodeRotylenchulus spp.Ring nematodeHoplolaimus spp.Root-knot nematodeMeloidogyne spp.Spiral nematodeHelicotylenchus spp.Stubby root nematodeTrichodorus spp.
Parasitic plants Mistletoes Dendrophthora spp. Loranthus spp. Oryctanthus spp. Phoradendron spp. Phthirusa spp. Tapinanthus spp.
Viral and viroid diseases Viral and viroid diseases Cacao swollen shoot virus (CSSV) Cacao yellow mosaic virus (CYMV) Cocoa necrosis virus (CNV)
References
Common Names of Diseases, The American Phytopathological Society IPARC Guide to cocoa pests and their management.