RESUMO

Mud crickets (family Ripipterygidae) comprise a small family of orthopterans distributed throughout much of the Neotropics, but knowledge of this groups' biology, ecology and distribution remains poor in comparison to most orthopteran taxa. Here we review the state of knowledge of nymphs in the genus Mirhipipteryx Günther 1969 and report the genus from Belize for the second time in 86 years. Because information about nymphs in this family is so scarce and nymphs are often neglected in species descriptions, we include comments on the coloration of nymphs for Mirhipipteryx pulicaria (Saussure 1896). Caution is suggested for the use of adult characters for the identification of immatures stages in the group. Nymphs of Mirhipipteryx pulicaria pulicaria are similar in coloration patterns to the adults, but lighter. Mirhipipteryx lobata Günther 1977 is designated a nomen nudum.

Assuntos

Assuntos

RESUMO

Species diagnosis in Trogolaphysa has been based, until now, almost exclusively on number of eyes and shape of claws and mucro. Chaetotaxy, a character system important to diagnose species in other genera of scaled Entomobryoidea, has been described only for a few Trogolaphysa species. Here the complete dorsal chaetotaxy of six species of Trogolaphysa is described using the AMS and Szeptycki's systems for head and body, respectively. A morphology-based parsimony analysis was performed to evaluate whether chaetotaxic characters overcome the influence of putatively cave adaptive convergent characters to resolve species level relationships, and to evaluate the evolution of the dorsal macrochaetae of the head. Phylogenetic analysis using only putative cave-adaptive characters support clades of unrelated taxa, but the addition of chaetotaxy overcomes the influence of convergent characters. A phylogeny based on all characters supports a trend towards reduced head macrochaetae number. Head macrochaetae are lost beginning with A3 and followed, in order, by S5, S3 and M3. In addition, a checklist of New World Trogolaphysa is provided and two new species, Trogolaphysa giordanoae sp. n. and Trogolaphysa jacobyi sp. n., are described on the basis of material collected in six caves in southern Belize.

RESUMO

A new species of Caponiidae, Tarsonops irataylori sp. n. is described from southern Belize, and a key to the genera of the subfamily Nopinae is provided.

RESUMO

A new species of the genus Ripipteryx (Orthoptera: Tridactyloidea: Ripipterygidae) from the Toledo District of southern Belize is described and illustrated. Ripipteryx mopanasp. n. is placed in the Scrofulosa Group based on its elaborately ornamented frons and is readily distinguished from its congeners by the fusion of the superior and inferior frontal folds to form a nasiform median process, the epiproct with both anterior and posterior margins emarginate, the subgenital plate with distinct lateroapical depressions either side of the median line, the basal plate of the phallus strongly bilobed apically, and the development of well-demarcated denticular lobes in the dorsal endophallic valves. A preliminary key to the species of the Scrofulosa Group is provided.