Nymphal instars of Pergalumna cienfuegosensis (Acari, Oribatida, Galumnidae)

G. Ermilov, Sergey; V. Sharapov, Denis

doi:10.22073/pja.v14i3.87135

Nymphal instars of Pergalumna cienfuegosensis (Acari, Oribatida, Galumnidae)

Authors

Sergey G. Ermilov

Denis V. Sharapov

University of Tyumen, Institute of Environmental and Agricultural Biology (X-BIO), Tyumen, Russia

10.22073/pja.v14i3.87135

Abstract

This article describes the nymphal instars of Pergalumna cienfuegosensis Ermilov, Kolesnikov, Kontschán & Klimov, 2023 (Oribatida, Galumnidae), based on material collected from leaf litter near a stream in a mixed forest in the Cienfuegos Province, Southern Cuba. The nymphs are characterized by a tripartite rostrum; transverse, concave medial prodorsal ridge; medium-sized rostral seta; long lamellar seta; short interlamellar and exobothridial setae; long, clavate, barbed bothridial seta; distinct gastronotic shield (macrosclerite); gastronotic setae of d-, l-, h-, and p-series represented by their alveoli (except short p₁–p₃ in protonymphal instar); transverse band on gastronotum and in aggenital region; two tubercles on subcapitular mentum; lamina between leg acetabula I and II; dorsal tooth on leg trochanter IV; and a delay in the development of some leg setae. Differences between the juvenile instars of P. cienfuegosensis and those of other known Pergalumna species are provided.

Keywords

Cuba

juvenile instar

morphology

ontogeny

oribatid mite