Hydroglyphus angularis (Klug, 1834)

Hájek, Jiří & Reiter, Antonín, 2014, Adephagous water beetles (Coleoptera: Gyrinidae, Haliplidae, Noteridae, Dytiscidae) of Yemen and Dhofar region (Oman) with description of a new Hyphydrus from Socotra Island, Acta Entomologica Musei Nationalis Pragae 54, pp. 63-99 : 86

Hydroglyphus angularis (Klug, 1834)

Published records. BALFOUR- BROWNE (1951: 185): Yemen (as Guignotus angularis ).

Material examined. OMAN: DHOFAR: 8 spec., 30 km W Salalah, Wadis near Al Mughsayl, pools and lagoons, 27.ii.1998, G. Wewalka leg. et det. ( GWCW, ONMM) ; 2 spec., Qitbit , spring, 19°09ʹ20″N, 54°30ʹ31″E, 164 m, 23.x.2009, A. Reiter leg. ( NMPC) . YEMEN: ABIJAN GOV.: 2 spec., Ba Tays vill. env., wadi Bana, 13°20ʹ58ʺN, 45°17ʹ48ʺE, 168 m, 8.xi.2007, A. Reiter leg. AL HUDAYDAH GOV.: 2 spec., ca. 12 km SE Al Mawkir vill., wadi Zabid , 14°09ʹ35ʺN, 43°29ʹ33ʺE, 264 m, 30.–31.x.2007, A. Reiter leg. LAHJ GOV.: 13 spec., W Lahj Al Hutah by road, wadi Am Rija , 13°01ʹ57ʺN, 44°33ʹ30ʺE, 297 m, 25.–26.x.2007, A. Reiter leg. SANA’ A GOV.: 2 spec., Sana’a city, Bait Baws, 15°16.3ʹN, 44°12.1ʹE, 2410 m, tank, 6.xi.2010, J. Hájek leg. TA’ IZZ GOV.: 2 spec., Najd an Nashamah env., Mashgab vill., 13°21ʹ29″N, 43°57ʹ26″E, 1182 m, 26.–27.x.2007, A. Reiter leg. SOCOTRA ISLAND: 1 spec., Dixam plateau, wadi Zerig , pools, Juncus marsh, 12°29.6ʹN, 53°59.5ʹE, 655 m, 13.–14.vi.2012, J. Bezděk, J. Hájek, V. Hula, P. Kment, I. Malenovský, J. Niedobová & L. Purchart leg. (all NMPC) .

Habitat. Collected predominantly from muddy littoral of larger pools, both natural and manmade (e.g. Figs 2 , 5–7 , 14 ).

Distribution. This species is widely distributed in the entire northern half of Africa ( BISTRÖM 1986). In Asia it is known from Turkey, Iraq, the Arabian Peninsula, Iran and Pakistan (NILS- SON & HÁJEK 2013). First precise data from Oman – the occurrence of this species in Oman in Palaearctic catalogue ( NILSSON & HÁJEK 2013) was based on unpublished records by G. Wewalka mentioned above. First record from Socotra Island.

Figures

Figs 1–2. 1 – Map of studied area with marked localities in Yemen and Dhofar region. 2 – Aquatic habitat in Yemen: meandering river in wadi Bana.

Figs 3–5. Aquatic habitats in Yemen. 3 – temporary stream in Jabal Bura valley Forest National Park; 4 – pool in mountain stream densely covered with filamentous algae, 5 km SW Matnah; 5 – artificial water reservoir with muddy bottom at Bait Baws, Sana’a.

Figs 6–7.Aquatic habitats in Yemen.6 – artificial water reservoir between garden plantations at Mashgab; 7 – residual pool with muddy bottom in lower part of wadi Am Rija.

Figs 12–14. Aquatic habitats in Socotra. 12 – temporary stream in wadi Ayhaft; 13 – spring pool with filamentous algae in wadi Madar; 14 – pools surrounded with Juncus sp. marsh in wadi Zerig.