| morphogenesis of larval onchocerca volvulus in the panamanian black fly, simulium quadrivittatum. | simulium quadrivittatum loew (diptera: simuliidae), a man-biting black fly, was shown, for the first time, to be capable of supporting development of onchocerca volvulus leuckart (nematoda: filarioidea) from microfilariae to third-stage (infective) larvae. the black flies were collected in chiriqui province, panama and transported alive to guatemala, where they were allowed to feed on a human subject infected with o. volvulus. samples of these flies were dissected over an 11-day period to assess ... | 1984 | 6731672 |