Coenagrion ornatum ( Selys, 1850 )

Kosterin, Oleg E., Onishko, Vladimir V., Ilyina, Elena V., Chepurnov, Grigory Yu. & Blinov, Alexander G., 2024, The genus Coenagrion Kirby, 1890 (Odonata: Coenagrionidae) in the Russian part of the Caucasus, Zootaxa 5471 (2), pp. 151-190 : 173

5. Coenagrion ornatum ( Selys, 1850)

Figs 10 , 11a–d

Reported from: Krasnodarskiy Kray, environs of Gryaznukhinskaya Stanitsa (sub. Agrion ornatum Selys ) ( Bartenef 1930), the Pslukh River in Sochi Municipality ( Skvortsov 2010); Kellermesskaya and Khanskaya Stanitsas in Adygea Republic ( Bartenef 1930; Shapovalov & Korotkov 2019).

Specimens. Karachay-Cherkes Republic: ♂ (37680843, 37680856), ♀, Russia, N Caucasus, Zelenchuk District, Dausuz village W environs, S banks of a large water reserve at the Bolzhoy Zelenchuk River , 43.793–796 N, 41.536–540 E, 1,012–1,014 m a.s.l., 3.07.2019 . Republic of Dagestan: ♂, 2♀♀ (178696749, 180155503, 180155777, 1180155989, 180156091, 80156210, 180156435, 180157387, 180159191 ( Fig. 11a ), 180160258, 180160572, 180160723, 180160831, 180160934), Buynaksk District, Buynaksk S environs, Verkhnee Kazanishche village environs, a swampy, reedy brook on a gentle left slope of the Akpeozen’ River valley , 42.7982 –42.7992 N, 47.1157– 47.1169 E, 487–488 m a.s.l., 29.05.2023 ; 6 ♂♂ ( Fig. 10d–e ) (178695634, 178695635 ( Fig. 11b ), 178695636, 180231099, 180231185, 180643335, 180643481, 180643723, 180643834, 180643926, 180644391, 180644477, 180644677, 180644769, 180644838, 180644922, 180645019, 180645088, 180950128, 180951966, 180952452, 180952577, 180952701, 180952786, 180952885, 180953036, 180953178, 180953270), Tabasaran District, the Rubas River valley 2.5 km NE of Sirtych village, a swampy Dzharag-Khyan Spring , 41.8490 –41.8527 N, 48.2396– 48.2411 E, 103–105 m a.s.l., 28.05.2023 ; 4 ♂♂, 3 ♀♀, Magaramkent District, Samur Delta Forest, Bil’-Bil’ Kazmalyar village , a brook and a pond, 41.818 –41.819 N, 48.547– 48.548 E, 21–22 m a.s.l., 4.06.2022, E. Ilyina leg ; 2 ♂♂, the same place, 5.06.2023, E. Ilyina leg.; 2 ♂, the same place, 5.05.2023, E. Ilyina leg.; 3 ♂♂ (178693662 ( Fig. 11c ), 178693663, 181380130, 181380245, 181380516, 181380589, 181380955, 181381118, 182680720, 182680856, 182681001, 182681109, 182681639, 182681821, 182682133, 182682287, 182683094, 182683374, 182683704, 182683883, 182683987, 182684102, 182771447, 182771534, 182771582), the same place, 27.05.2023; 3 ♂♂ ( Fig. 10a–b ), 4 ♀♀ (98025103 ( Fig. 11d ), 98116240, 98963192, 98963230, 98963408, 98963476, 98963562, 98963695, 98963732, 98964853, 98964859, 98964915, 98964939, 98964993, 98965076, 98968166, 98968201), Rutul District, the Samur River left arm between Kufa and Kala villages, 41.569 –41.570 N, 47.358– 47.362 E, 1367–1373 m a.s.l., 26.06.2021 .

Distribution and habitat. Widespread but local in the Caucasus, although the populations found were rather large. The species invariably occurs at small slow streams.

Characters. The characters are unmistakable for this species ( Kalkman 2006; Skvortsov 2010; Dijkstra et al. 2020) and deserve no attention beyond a particular problem with the position of the male cerci (see ‘Discussion’). In our male specimens, the cerci are more or less divergent to a variable extent ( Fig. 10 ); in specimens from the Rubas River valley the divergence is on average less expressed, with the least divergent case shown in Fig. 10d .

Figures

FIGURE 10. Male appendages of Coenagrion ornatum specimens from Dagestan in dorsal view: a–b—Rutul District, the Samur River left arm between Kufa and Kala villages, 26.06.2021; c–d—Tabasaran District, the Rubas River valley 2.5 km NE of Sirtych village, a swampy Dzharag-Khyan Spring, 28.05.2023. Scale bar 0.5 mm.

FIGURE 11. Coenagrion ornatum (a–d) and C. scitulum (e–k) in different populations in the Russian part of the Caucasus in nature; a–c, e–f—males; d—copula; g–j—females; k—tandems; a—Buynaksk District, Verkhnee Kazanishche village environs, a brook on the Akpeozen’ River valley left slope, 29.05.2023 (180159191); b—Tabasaran District, the Rubas River valley 2.5 km NE of Sirtych village, Dzharag-Khyan Spring, Sirtych, 28.05.2023 (178695635); c—Dagestan, Magaramkent District, Samur Delta Forest, Bil’-Bil’ Kazmalyar village, 25.06.2021 (178693662); d—Rutul District, the Samur River left arm between Kufa and Kala villages, 26.06.2021 (98025103); e, j—Krasnodarskiy Kray, Anapa Municipality, E suburbs of Supsekh settlement, Lake Zmeinoe env., 24.06.2019 (108802758, 108804470, respectively); f—Karachay-Cherkes Rpeublic, Malokarachaevsk District, Uchkeken village E environs, 9.07.2019 (109974039, Fig. 11f); g, k—Dagestan, Makhachkala N suburbs, pools at the Krivaya Balka River left bank in its lowermost reaches, 30.05.2023 (176987626, 182772933, respectively); h—Derbent District, 3.5 km NE of Belidzhi village, thickets at a swamp, 25.05.2023 (186590343); i—Dagestan, Buynaksk District, Nizhnee Kazanishche village environs, a water reservoir, 29.05.2023 (176987387); a, g–i, k—photo by VVO, b–f, j—by OEK. Not to scale.