Ictinogomphus acutus
Year: 2025
Type: other
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).
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7125403296
Cites:
Cited by:
Related to: