3a. Orientilla vietnamica Lelej, 1979

(Figs 2, 33–35)

Orientilla vietnamica Lelej 1979: 1066, ♀; 2005: 113l; Okayasu et al. 2018: 309.

Diagnosis. FEMALE. This is the only eastern Orientilla species with the head reddish-brown. Other useful features are mentioned in the original description by Lelej (1979). Body length 8.0– 9.1 mm. MALE. Unknown.

Material examined. Holotype, ♀, VIETNAM, Nha-Trang, S[outh] Annam, V–IX.1933, K. Davydoff [ZISP]. Other Material (9 ♀). MYANMAR (1♀ Museo Regionale Scienze Naturali, Torino, Italy). THAILAND: Chiang Mai, Doi Pui, 1200–1500 m, near Chiang Mai, 23.XII.1997, Sk. Yamane (1♀ SKYC); Omkoi District, Dry dipterocarp forest, 17 o 50′49.9″N 98 o 22′33.0″, 950–1010 m alt.: 10.IX.2016, R. Mizuno (1♀ EUM); 27.VI.2017, R. Mizuno (1♀ EUM); 28.VI.2017, R. Mizuno (1♀ EUM); Khon Kaen, Khon Kaen, 15.X.1972, M. Sato (1♀ EUM); Phetchaburi, Kaeng Krachan, Baan Maka Nature Lodge, 12.840 o N 99.590 o E, 140 m, 22.V.2018, MKT (1♀ CSCA); Ubon Ratchathani, Pha Taem National Park, wildflower field, 15 o 27.34'N 105 o 34.87'E, 232 m, Malaise trap, 18–25.XI.2006, Sorawit and Thongdee, T1060 (1♀ QSBG). VIETNAM, "Nha-Trang, S[outh] Annam, V– IX.1933, K. Dubovikoff " [South Vietnam, Nha Trang] (1♀ IBSS).

Distribution. Thailand (Phetchaburi, Ubon Ratchathani), Myanmar, and Vietnam.

Remarks. In Thailand, O. vietnamica Lelej, 1979 was initially recorded by Lelej (2005). Two additional Thai specimens of O. vietnamica were studied, including one collected in Phetchaburi in 2018.