Forty five (20 males and 25 females) specimens of Quiscalus mexicanus were captured at Rio Chico. Escarrea and Chiriqui Viejo water shed in Chiriqui. Panama, starting at January of 2009 to july of 2010 in order to determinate their parasite population. A necropsy was carried out to all specimens identifying Salmonella enterica at intestinal content of one out of 12 tested birds, another bacterial species normally found at intestinal environment of birds were tbund too. Parasites obtained includes Raillitina sp. (Cyclophyllidea), Mediorhynchus. mattei Marchand y Vassiliades, 1982 (Giganthorhynchida, Giganthorhynchidae), Isospora .sp. was found at 17.8 % (8/45) of analyzed specimens. Not identified nematode were found at 58 %(26/45) between 0.0 and 4 by each analyzed bird. Nine out of 45 individuals had cerebral cysts that were not identified for this study. Mallophaga of family Melliponidae was Hound in allthe specimens. Spores of , Alternaria sp. and Curvalaria were found at intestinal content samples but culture procedures resulted positives only for development of Penicillium sp. and some Mucorales, both fungus possibly relatives to human pathogens groups. There was two characteristically different species of filarial at 20 % of blood frotis (9/45). 21 % of individuals did not have any intestinal parasites. 23 % o analyzed birds showed one species of intestinalparasites, 36 % of birds had up to two species of intestinal parasites simultaneously and 19.5 % of birds had until three species of different parasites simultaneously. Any of specimens of Q. mexicanus showed signs indicating that the presence of these parasites anecting its behavior or anatomophysiological features. Any identified groups looks to be related to human pathology.Se realizó la captura, disección, y exploración de cucarachas (Blattaria) provenientes de las cuencas de los ríos Chiriquí Viejo, Escarrea, Chico y Chiriquí, para identificación de los parásitos transportados por ellas hasta hospedantes humanos, principalmente. y animales domésticos, y la recolección, preparación, montaje, preservación y registro de diferentes especímenes como una colección resumida de referencia inicial de las especies de cucarachas de la región centro - occidental de la provincia de Chiriquí. Los insectos preservados se entregaron al Museo de Peces de Agua Dulce e Invertebrados Acuáticos (MUPADI) de la Universidad Autónoma de Chiriqui. Los parásitos conectados se preservaron en el Centro de Investigaciones y Diversidad Micológica (CAMI) de la UNACHI. De un total de 286 cucarachas, se capturaron 79.7 % Periplaneta americana, 3.5 % P. australasiae, 0.7% aHo Blattella gemánica, 0.7 % Blaberus discoidalis, 0.7 % B. craniifer, 2,8 % Hyporichnoda lithomorpha. 4,2 % Panchlora nivea 4.2 %o Riatia fulgidaa. Se identificaron protozoarios Ciliophora (Balantidium), oociistos de Coccidia (cystoisospora belli, Eimeria sp.), Blastocystidae (Blastocystis), huevos de Nematoda (Trichuris trichiura, Ascaris lumbricoides), Nemátoda (Thelastoma icemi , Euryconema sp.), un cystacanto de un Acanthocephala no identificado,Strongyloides sterocalis , Enferobius vemlicularis y un Pensastomida (Railietiella frenatus) Tanto Thelastoma como Eyryconema son parásitos de insectos y otros artrópodos y Railietiella es parásito de Geckonidae. Balantidium , Cystoisospora, Ascaris y Trischuris son parásitos de humanos.