Ictinogomphus acutus

Zenodo (CERN European Organization for Nuclear Research)

Abstract

Ictinogomphus acutus (Laidlaw, 1914) Selected references: Ictinus acutus Laidlaw, 1914;— Laidlaw 1914b: 51–52, fig. 1 (original description from Sarawak). Ictinogomphus acutus (Laidlaw, 1914);— Lieftinck 1954: 77 (first record from Sumatra: Belitung). Specimens collected. M1a: 2 ♂♂ (RER20 _ GOM1, 4; RER), 15 i 2020; 1 ♂ (RER20 _ GOM2; BRIN), 15 i 2020; 1 ♂ (RER20 _ GOM3; UMRI), 15 i 2020; 1 ♂ (RER20 _ GOM5; BRIN), 18 i 2020; 1 ♂ (RER20 _ GOM6; UMRI), 19 i 2020; 1 ♂ (RER23 _ GOM2; UMRI), 12 ii 2023; 1 ♂ (RER23 _ GOM13; UMRI), 14 vi 2023; 1 ♀ (RER23 _ GOM26; RER), 4 x 2023; M1f: 1 ♂ (RER23 _ GOM6; BRIN), 17 ii 2023; 1 ♂ (RER23 _ GOM27; BRIN), 4 x 2023; M1j: 1 ♂ (RER23 _ GOM25; BRIN), 2 x 2023; M1l: 1 ♂ (RER23 _ GOM3; RER), 15 ii 2023; 1 ♂ (RER23 _ GOM4; BRIN), 15 ii 2023; M1m: 1 ♂ (RER23 _ GOM5; UMRI), 16 ii 2023; M5a: 1 ♂ (RER20 _ GOM7; RER), 20 i 2020; 1 ♂ (RER20 _ GOM8; BRIN), 20 i 2020; 1 ♂ (RER20 _ GOM9; UMRI), 20 i 2020; 1 ♂ (RER20 _ GOM10; RER), 25 i 2020; 1 ♂ (RER23 _ GOM1; BRIN), 9 ii 2023; 1 ♂ (RER23 _ GOM12; BRIN), 6 vi 2023; 1 ♂ (RER23 _ GOM23; BRIN), 28 ix 2023; 1 ♀ (RER23 _ GOM24; UMRI), 28 ix 2023. Remarks. Recorded from the mainland of Sumatra for the first time. Aside from the record from Belitung and a few records from Pahang (e.g. Norma-Rashid et al. 2001, Dow et al. 2012, Choong et al. 2016), most records of I. acutus are from Borneo. When the habitat has been recorded the species is invariably associated with low pH waters; its preferred habitat is low gradient streams in PSF or other forest formations with low pH and it can sometimes be found at drains with flow at the edge of PSF (although it has not been found in this situation in the Kampar Peninsula).

Authors 7

1. Rory A. Dow Aachen Institute of Biodiversity and Environmental Conservation

   Naturalis Biodiversity Center · Universiti Malaysia Sarawak

   Affiliation as printed

   Institute of Biodiversity and Environmental Conservation, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia. & Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, The Netherlands

2. Novia Gesriantuti

   Universitas Muhammadiyah Riau

   Affiliation as printed

   Program Studi Biologi Fakultas MIPA Dan Kesehatan, Universitas Muhammadiyah Riau, Indonesia

3. Muhammad Iqbal

   Riau University

   Affiliation as printed

   Restorasi Ekosistem Riau, Pangkalan Kerinci

4. Pungki Lupiyan-Ingdyah

   Brigham Young University · National Research and Innovation Agency

   Affiliation as printed

   Research Center for Biosystematics and Evolution, National Research and Innovation Agency (BRIN), Cibinong, Kabupaten Bogor, Jawa Barat 16911, Indonesia. & Department of Biology, Brigham Young University, Provo, UT 84602, USA

5. JOHN F. PERIERA
   Affiliation as printed

   Restorasi Ekosistem Riau, Pangkalan Kerinci, Riau

6. Shinta O. Zulya

   Universitas Muhammadiyah Riau

   Affiliation as printed

   Program Studi Biologi Fakultas MIPA Dan Kesehatan, Universitas Muhammadiyah Riau, Indonesia

7. Bradford M. Sanders
   Affiliation as printed

   Restorasi Ekosistem Riau, Pangkalan Kerinci, Riau