Some species of `` Anopheles '' also can serve as the vectors for canine heartworm `` Dirofilaria immitis '' , the filariasis-causing species `` Wuchereria bancrofti '' and `` Brugia malayi '' , and viruses such as one that causes O'nyong ` nyong fever .
Some species of `` Anopheles '' are vectors for canine heartworm `` Dirofilaria immitis '' , filariasis , and viruses such as one that causes O'nyong ` nyong fever .