Streptocephalus (Streptocephalus) sirindhornae Sanoamuang, Murugan, Weekers, & Dumont, 2000

Shu, Shu-Sen, Rogers, D. Christopher, Chen, Xiao-Yong & Sanoamuang, La-orsri, 2018, Streptocephalus diversity in Myanmar, with description of a new species (Branchiopoda, Anostraca), ZooKeys 734, pp. 1-12 : 8

Streptocephalus (Streptocephalus) sirindhornae Sanoamuang, Murugan, Weekers, & Dumont, 2000

Remarks.

Streptocephalus sirindhornae is the most widely distributed member of the genus in Southeast Asia, with previous records from: Thailand, Laos, Cambodia, and China ( Sanoamuang et al. 2000; Rogers et al. 2013; Shu et al. 2015). Some characters vary in different populations (Shu et al. 2013), and the materials collected from Myanmar is more similar to the Thai populations, with a deep depression on the posterior ramus ventral margin and unequal apical subrami on the posterior ramus.

Our materials were collected from the central dry zone of Myanmar including Mandalay, Magway, and Sagaing regions (Fig. 2). These are the most western records for this species. The distributional range of S. sirindhornae in Myanmar overlaps with that of S. shinsawbuae sp. n. (Fig. 2); however, the two species were not found co-occurring in the same pool.

Material examined.

MYANMAR: MANDALAY REGION: Nyaung Lunt Township: rice field near the road from Nyaung Lunt to Yamethin, 20°18'9.26"N, 96°9'51.08"E, altitude 189 m, 12 males and 22 females. Hlaingdet Township: a pond near the road from Meiktila to Yin Mar Bin, 20°46'53.80"N, 96°11'30.24"E, altitude 162 m, 8 males and 15 females. SAGAING REGION: Kanbalu Township: Kaing Taw Village: rice field near the road from Kanbalu to Chatthin Wildlife Sanctuary, 23°15'22.53"N, 95°30'54.45"E, altitude 169 m, 5 males and 3 females. Kanbulu Township, Bugon Township and Ywa Zin Township: a pond near the road from Kan bulu to Shwebo, respectively, 23°13'21.22"N, 95°31'55.57"E, altitude 181 m, 3 males and 5 females; 22°55'1.54"N, 95°41'56.33"E, altitude 160 m, 9 males and 15 females; 22°46'30.75"N, 95°42'39.15"E, altitude 152 m, 14 males and 8 females. Saye Township: rice field near Saye Lake, 22°2'14.29"N, 95°55'46.90"E, altitude 86 m, 14 males and 11 females. MAGWAY REGION: Aunglan Township: a pond near the road from Pyay (Prome) to Taungdwinggyi. All specimens were collected by S.S. Shu, X.Y. Chen, T. Qin, P. Zaw in June and July, 2017, and the locations are marked in Fig. 2.