New records of platynectes (S. str.) diving beetles from South America with description of two new species (coleoptera: Dytiscidae: Agabinae)

Andrew Edward Z. Short, Cesar J. Benetti, Grey T. Gustafson

Research output: Contribution to journalArticlepeer-review

Abstract

Diving beetles in the genus Platynectes (s. str.) in South America are relatively large and charismatically colored, yet relatively rare in museum collections. Recent fieldwork in northern and central South America has resulted in the collection of hundreds of new specimens that substantially expand our distributional knowledge of the genus. Here, we provide new distributional records for Platynectes decemnotatus (Aubé, 1838), P. garciai Gustafson, Short & Miller, 2016, P. submaculatus (Laporte, 1835), and P. tafelbergensis Gustafson, Short & Miller, 2016. In addition, two new species were identified and described herein: Platynec-tes bicolor sp. nov. of the P. ornatifrons species group from Brazil (Goiás and Mato Grosso do Sul), and P. colombicus sp. nov. of the P. submaculatus species group from the Guiana Shield region of eastern Colombia. These new records suggest that Platynectes (s. str.) is likely widespread across the Brazilian and Guiana Shield regions of the continent, and that some individual species have substantial range sizes of nearly 2000 km. An updated key to the species groups of Neotropical Platynectes (s. str.) and to the species of P. submaculatus species group are provided.

Original languageEnglish (US)
Pages (from-to)437-447
Number of pages11
JournalActa Entomologica Musei Nationalis Pragae
Volume60
Issue number2
DOIs
StatePublished - 2020
Externally publishedYes

Keywords

  • Amazonia
  • Brazil
  • Coleoptera
  • Colombia
  • Dytiscidae
  • Guiana Shield
  • Key
  • Neotropical Region
  • New records
  • New species
  • Platynectes
  • Taxonomy

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Insect Science

Fingerprint

Dive into the research topics of 'New records of platynectes (S. str.) diving beetles from South America with description of two new species (coleoptera: Dytiscidae: Agabinae)'. Together they form a unique fingerprint.

Cite this