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Such development is absent in the life-cycle of members of the Leishmania mexicana complex, which develop only in the midgut and foregut. This difference was maintained in the sandfly Lutzomyia longipalpis experimentally infected with a variety of leishmaniae, some of which have also been studied in their natural vectors. Development in this laboratory-bred insect therefore serves as a quick means of distinguishing between isolates of the mexicana and braziliensis complexes. Subspecies of Leishmania hertigi, from neotropical porcupines, were not found to develop in the hindgut of Lu. longipalpis: for this and other reasons they are removed from the L. braziliensis complex and placed in a group of their own. Leishmania enriettii, of the guinea-pig, similarly failed to develop in the hindgut: this, with additional features of the parasite, supports its continued inclusion in the L. mexicana complex. The significance of hindgut development of certain leishmaniae is discussed, particularly with regard to the evolution of the genus Leishmania.<\/jats:p>","DOI":"10.1098\/rspb.1977.0141","type":"journal-article","created":{"date-parts":[[2006,12,18]],"date-time":"2006-12-18T18:11:46Z","timestamp":1166465506000},"page":"309-320","source":"Crossref","is-referenced-by-count":27,"title":["<i>Leishmania<\/i>\n                    in phlebotomid sandflies: VI. Importance of hindgut development in distinguishing between parasites of the\n                    <i>Leishmania mexicana<\/i>\n                    and\n                    <i>L. braziliensis<\/i>\n                    complexes"],"prefix":"10.1098","volume":"199","author":[{"given":"Ralph","family":"Lainson","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R. 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EvoluQao de L. braziliensis em flebotomos","volume":"9","author":"Coelho M. V.","year":"1967","journal-title":"Rev. Inst. Med. trop., Sdo Paulo"},{"key":"p_9","first-page":"299","article-title":"6 III. Ciclo vital de L. mexicana em L. longipalpis e L. renei","volume":"9","author":"Coelho M. V.","year":"1967","journal-title":"Rev. Inst. Med. trop., Sdo Paulo"},{"key":"p_10","unstructured":"Floch H. & Abonnenc E. 1942 Phlebotomes de la Guyane Fransaise. III. Sur P. intermedius Lutz & Neiva 1912. Publ. Inst. Past de la Guyane et du Territoire de L'inini Publ. no. 30 1-16."},{"key":"p_11","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1080\/00034983.1958.11685846","article-title":"On Leishmania adleri sp. nov. from lacertid lizards ( sp.)","volume":"52","author":"Heisch R. B.","year":"1958","journal-title":"Med. Parasit."},{"key":"p_12","doi-asserted-by":"publisher","DOI":"10.2307\/3277928"},{"key":"p_13","doi-asserted-by":"crossref","unstructured":"Hertig M. & McConnell E. 1963 Experimental infection of Panamanian sandflies with Leishmania. E xplParasit. 14 92-106.","DOI":"10.1016\/0014-4894(63)90014-6"},{"key":"p_14","first-page":"1110","article-title":"The relationship of the haemoflagellates. Proc. IVth","volume":"2","author":"Hoare C. A.","year":"1948","journal-title":"Int. Congr. trop. Med. Malaria, Washington, D.G."},{"key":"p_15","doi-asserted-by":"publisher","DOI":"10.1016\/0014-4894(70)90033-0"},{"key":"p_16","doi-asserted-by":"publisher","DOI":"10.1016\/0014-4894(63)90015-8"},{"key":"p_17","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.1977.0032"},{"key":"p_18","first-page":"429","article-title":"The establishment, maintenance and productivity of a laboratory culture of Lutzomyia longipalpis (Diptera: Psychodidae). 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