Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia Miriam Adriana Alvan-Aguilar, Neusa Hamada, Peter H Adler, Sérgio Luiz Bessa Luz PAGE: 249-257

Black Flies (Diptera: Simuliidae) of French Guiana: Cytotaxonomy and a Preliminary List of Species Neusa Hamada, Florence Fouque* PAGE: 955-959

Chromosomal Comparisons among and within Populations of Simulium (Chirostilbia) pertinax (Diptera, Simuliidae) Jairo Campos, Carlos Fernando S Andrade, Shirlei M Recco-Pimentel* PAGE: 365-369

The Polytene Chromosomes of Cnesia dissimilis (Edwards) and Three Species of Gigantodax Enderlein (Diptera: Simuliidae) from Lanin National Park (Argentina) Cecilia L Coscarón Arias PAGE: 445-458