Zusammenfassung: | Four new species of penicillate millipedes from the genus Monographis Attems, 1907, collected from various regions in
Vietnam, are described. They show distinctive morphological characteristics on the labrum, telotarsus, and sensilla on
antennal article VI. Monographis cattienensis sp. n., M. tamdaoensis sp. n., and M. thatsonensis sp. n. belong to the group
with sensilla on article VI arranged in a crescent, whereas M. konkakinhensis sp. n. is in a group with sensilla arranged
in a triangle. Molecular analysis of Monographis konkakinensis sp. n., M. tamdaoensis sp. n. and M. thatsonensis sp. n.
shows that these species differ genetically from other Monographis congeners. Additionally, two previously described
subspecies, Monographis kraepelini malayanus Nguyen Duy-Jacquemin & Condé, 1966; and M. k. sabahnus Condé
& Nguyen Duy-Jacquemin, 1984; are elevated to species, namely Monographis malayana Nguyen Duy-Jacquemin &
Condé, 1966 and M. sabahna Condé & Nguyen Duy-Jacquemin, 1984.
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