Cento e vinte anos de estudos sobre Pycnogonida Latreille, 1810: Análise da literatura, e descrição do estágio larval de Pallenopsis tumidulaLoman, 1923

Abstract

Pycnogonida is a class of exclusively marine chelicerates, dioecious in their majority, displaying single parent care, which is rare amongst invertebrates. Said single parent care is carried out by the male, and consists, mainly, of the protection and ventilation of the eggs untill they hatch, but in many observed cases, the male is seen carrying the larvae after the hatching has occured. However, once the hatching is done and the larvae leaves the male, few are the descriptions regarding their upcoming development. Hence, the present work plan, in virtue of the importance held by the development process over the understanding of phylogenetic relations within the current groups, and the low number of published material about the subject, specially for Brazil, aimed to do a bibliographical revision, analyzing and classifying 1324 works, an analysis of the state of the art, focused specially on the development process, a compilation of material regarding the development in the form of a table, containing all the species with a previously described, partial or complete development in the literature from 1901 to 2021, resulting in 101 species referenced here, and finally, make some comments about the larval stage of Pallenopsis tumidula Loman, 1923, found in the Paulo Young Invertebrate Collection (CIPY).