Volume 29, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Development of the microfilaria of to the infective stage in a species of the group from the Mitú area, Comisaría del Vaupés, Colombia is described. Development was synchronous, and by day 6 third-stage larvae were observed in the head of flies which had fed on two naturally infected volunteers. biting activity was high from January–March, during the dry season. Only 261 blood-fed were collected from an infected volunteer; 40% of 43 dissected on day 0 had ingested microfilariae. However, only one of 129 specimens dissected after day 2 was positive, containing a second-stage larva thought to be . It is concluded that , rather than , are the principal vectors of mansonelliasis in the Mitú area.


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