[Presence, in ticks from the Geneva region, of infective larvae which may be related to the dog filaria Dipetalonema grassii].

About forty infective filarial larvae were collected from Rhipicephalus sanguineus (two ticks positive out of about 50 examined) living inside a house and presumably originally transported from the south of France or Toscana. The larvae are of the genus Dipetalonema; they are distinct from infective stages of the three most common European species, D. dracunculoides and D. reconditum from dogs and D. rugosicauda from roe deer. They may however be larvae of D. arassii (Noé, 1907), a dog filarid which has not been reported since its original descovery in Italy.