Yolina insignis ( Sharp, 1882 )

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 : 90

Yolina insignis ( Sharp, 1882)

Published records. BALFOUR- BROWNE (1951:186):Yemen; ROCCHI (1985: 446):Yemen; BISTRÖM (1983: 60): Yemen. Material examined. OMAN: DHOFAR: 5 spec., Difa , wadi, 16°45ʹN, 53°14ʹE, 435 m, 23.iii.2012, A. Reiter leg. ; 1 spec., wadi Darbat, N part near Shihayt , 17°09ʹN, 54°28ʹE, 325 m, 28.iii.2012, A. Reiter leg. ; 8 spec., 13 km E Mirbat, wadi Ain , 17°01ʹN, 54°47ʹE, 59 m, 29.iii.2012, A. Reiter leg. ; 7 spec., wadi Ash Shuwaymiyah , 17°56ʹN, 55°32ʹE, 31 m, 1.iv.2012, A. Reiter leg. ; 18 spec., Hasik, wadi 4 km to S, 17°25ʹN, 55°17ʹE, 46 m, 1.iv.2012, A. Reiter leg. YEMEN: ABIJAN GOV.: 1 spec., Ba Tays vill. env., wadi Bana , 13°20ʹ58ʺN, 45°17ʹ48ʺE, 168 m, 8.xi.2007, A. Reiter leg. AL HUDAYDAH GOV.: 3 spec., ca. 12 km SE Al Mawkir vill., wadi Zabid , 14°09ʹ35ʺN, 43°29ʹ33ʺE, 264 m, 30.–31.x.2007, A. Reiter leg. ; 12 spec., Jabal Bura valley forest NP, 14°52.4–5ʹN, 43°24.– 25.2ʹE, 240–350 m, stream valley, 4.xi.2010, J. Hájek leg. HAJJAH GOV.: 3 spec., NE Hajjah by road, Halhal vill. env., 15°43ʹ42ʺN, 43°37ʹ25ʺE, 998 m, 2.–3.xi.2007, A. Reiter leg. LAHJ GOV.: 10 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., Beni Mansour vill. env., 15°06.1–4ʹN, 43°52.8– 53.2ʹE, 1520–1550 m, stream valley, 3.+5.+ 19.xi. 2010, J. Hájek leg. ; 1 spec., wadi Moor , 15°08.0ʹN, 43°36.4ʹE, 744 m, stream, 5.xi.2010, J. Hájek leg. ; 1 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°21ʹ29ʺN, 43°57ʹ26ʺE, 1182 m, 26.–27.x.2007, A. Reiter leg. ; NNW Ash Shuqayrah by road, wadi Bani Khawlan , 13°19ʹ57ʺN, 43°43ʹ19ʺE, 460 m, 27.–28.x.2007, A. Reiter leg. (all NMPC) .

Habitat. Associated mostly with running water, especially with side pools of streams and rivers in wadis (e.g. Figs 2–3 , 7 ); rarely also in pools (tank), especially at higher altitude ( Figs 5–6 ). Yemeni localities came from lower parts of wadis up to 2400 m a.s.l. in the mountains; in Oman, Yolina insignis was found in pools in middle and lower parts of wadis on slopes of Jabal Al Qamar in western part of Dhofar to Jabal Jinawt on eastern coast of the province (e.g. Fig. 9 ).

Distribution. A species occurring in eastern Africa and the Arabian Peninsula (Saudi Arabia, Yemen) ( BISTRÖM 1983). First record from Oman.

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 8–9. Aquatic habitats in Dhofar, Oman. 8 – stream in forested wadi Hannah dammed with a small concrete dam; 9 – residual pool in wadi with gravel bottom at Difa, partially with running water.