Published June 23, 2023 | Version v1
Taxonomic treatment Open

Dynastinae

  • 1. chris. reid @ australian. museum; https: // orcid. org / 0000 - 0003 - 1899 - 9839
  • 2. https: // orcid. org / 0000 - 0003 - 0367 - 2876

Description

Key to the species of Dynastinae from Lord Howe Island

1. Propygidial disc densely sculptured with transverse ridges..................................................... 2

- Propygidium smooth surfaced and evenly punctate, without stridulatory ridges.................................... 5

2(1) Propygidial disc with scattered unaligned and equal sized short transverse ridges, not forming a pair of stridulatory files; anterior margin of head rounded......................................................................... 3

- Propygidial disc with paired stridulatory files, formed by longitudinally aligned dense transverse ridges, decreasing in size from base to apex; anterior margin of head excavate either side of midline............... Heteronychus arator (Fabricius, 1775)

3(2) Mandibles bidentate; frontoclypeus with single median tubercle; 5–7 shallow elytral striae........................... 4

- Mandibles tridentate; frontoclypeus with either 2 tubercles or none; 9 deep elytral striae..................................................................................................... Metanastes vulgivagus (Olliff, 1889)

4(3) Base of pygidium setose; elytral punctures ocellate, with a fine ridge around each puncture... Pimelopus noctis (Olliff, 1889)

- Base of pygidium glabrous; elytral punctures simple, unridged.................. Pimelopus fischeri (Montrouzier, 1860)

5(1) Body flat; mentum expanded concealing bases of palpi; elytra densely punctured, relatively dull.......................................................................................... Cryptodus tasmannicus Westwood, 1841

- Body convex; mentum not laterally expanded; elytra not densely punctured, relatively shiny....................................................................................... Semanopterus kingstoni Reid & Tees, new species

Notes

Published as part of Reid, Chris A. M. & Tees, Natalie A., 2023, A new, but possibly extinct, species of Semanopterus Hope, 1847 from Lord Howe Island, in the southwestern Pacific Ocean (Coleoptera: Scarabaeidae: Dynastinae), pp. 563-570 in Zootaxa 5306 (5) on page 568, DOI: 10.11646/zootaxa.5306.5.4, http://zenodo.org/record/8073254

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Linked records

Additional details

Biodiversity

Family
Malvaceae
Kingdom
Plantae
Order
Malvales
Phylum
Tracheophyta
Taxon rank
subFamily

References

  • Olliff, A. S. (1889) The insect fauna of Lord Howe Island. Australian Museum Memoir, 2, 77 - 98, pl. vi, errata. https: // doi. org / 10.3853 / j. 0067 - 1967.2.1889.482