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Pygmy grasshoppers (Orthoptera: Tetrigidae) from Sekayu, Terengganu; with the description of a new species

  • 0Institute of Biological Sciences; Faculty of Science; Universiti Malaya; Kuala Lumpur 50603; Malaysia. miamedulla@gmail.com.
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October 21, 2025

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October 21, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

A new Eufalconius species, Eufalconius sekayu, was discovered in Malaysia. This finding expands the known distribution of the Eufalconius genus beyond its typical mountain range.

Area Of Science

  • Entomology
  • Biodiversity research
  • Taxonomy

Background

  • The genus Eufalconius was previously monotypical, with only E. pendleburyi described.
  • The Titiwangsa Mountain range was considered the primary habitat for Eufalconius species.

Purpose Of The Study

  • To describe a new species of Eufalconius from Sekayu, Terengganu, Peninsular Malaysia.
  • To document the first record of the Eufalconius genus outside the Titiwangsa Mountain range.
  • To report new occurrences of several Orthoptera species in Terengganu.

Main Methods

  • Field collection of Orthoptera in Sekayu, Terengganu.
  • Morphological analysis for species identification and differentiation.
  • Comparative analysis with existing Eufalconius species descriptions.

Main Results

  • A new species, Eufalconius sekayu Muhammad, Azizan, Abdullah & Tan, sp. nov., is described and differentiated from E. pendleburyi by its slender pronotum, outward-curving lateral lobes, visible hindwings, and specific antennal coloration.
  • This discovery marks the second species within the Eufalconius genus and the first record of this genus outside the Titiwangsa Mountain range.
  • Nine additional Orthoptera species (Potua coronata, Systolederus cinereus, Xistrella dohrni dohrni, Coptotettix nigrifemurus, Lamellitettigodes contractus, Lamellitettigodes sagittatus, Criotettix bispinosus, Eucriotettix simulans, and Loxilobus insidiosus) are recorded in Terengganu for the first time.
  • Color variations were observed and documented for Coptotettix nigrifemurus, Criotettix bispinosus, and Systolederus cinereus.

Conclusions

  • The description of Eufalconius sekayu expands the known diversity of the Eufalconius genus.
  • The presence of Eufalconius in Terengganu broadens the geographical distribution of the genus.
  • The study contributes to the understanding of Orthopteran fauna in Peninsular Malaysia, particularly in Terengganu.