Análisis histológico del tubo digestivo de Passalus (Pertinax) punctatostriatus Percheron, 1835 (Coleoptera, passalidae)

Abstract

This paper is a histological study of the digestive tube of males of Passalus (Pertinax) punctatostriatus Percheron, 1835. Organisms were collected from Parque Natura, Xalapa, Veracruz, Mexico on March of 2009. The samples were transported alive in plastic flasks with ventilation to the laboratory for the dissection process; the total length and by sections of the digestive tube was taken, each zone was processed through the histological technique, which was done dying with hematoxiline and eosine. Anatomically the digestive tube of P. punctatostriatus presents the three regions that had been observed in insects, in the histology stands out the presence of papilla in de midgut region and of spines and fungi in the ileum portion of the hidgut.