Psyttala horrida (Stål, 1865) (Hemiptera: Reduviidae: Reduviinae)—A Morphological Study of Eggs and Nymphs

SIMPLE SUMMARY: We present a morphological and morphometric study of the eggs and all nymphal stages of Psyttala horrida—a representative of the predatory family Reduviidae. Research on eggs and nymphs is essential for individual groups of insects because they complement the knowledge about their development. They are also important information for systematic and phylogenetic research. For the first time, descriptions of all immature stages of P. horrida are presented, with the additional use of images from scanning electron microscopy (SEM). ABSTRACT: In terms of body size, species of the genus Psyttala Stål, 1859, are the largest known representatives of the subfamily Reduviinae. Among the species belonging to this genus, Psyttala horrida (Stål, 1865) is the most popular, mainly because it is a laboratory breeding species. Individuals of this species were bred in the laboratory of the Zoology Team at the University of Silesia in Katowice, Poland. A description of the morphology of the nymphs and eggs is presented. In addition to descriptions, photos of the successive immature stages are provided and scanning electron microscopy (SEM) images are included to show morphological details and compare the developmental changes in subsequent stages.