Description and illustration of the discotelic larvae of Pachyteles vignai Deuve, 1999 and P. digiulioi Deuve, 1999 from the Otonga cloud forest (Ecuador) (Coleoptera, Carabidae, Ozaenini)

The peculiar morphology of the discotelic larvae of three species of Pachyteles (Coleoptera, Carabidae, Paussinae, ozaenini) collected in an Andean cloud forest in Ecuador (otonga nature Reserve, Cotopaxi) is here analyzed. All instars of Pachyteles vignai Deuve, 1999, 2nd and 3rd instars of P. digiulioi Deuve, 1999, and the 3rd instar of another undetermined Pachyteles species are described. A particular emphasis on the illustration of the aberrant larval morphology is given by using both traditional drawing techniques and macro multifocal image acquisition, combined with scanning electron microscopy (SEM) for analyzing the details. The diagnostic characters of these larvae are compared to those of the other known larvae of ozaenini