Orientilla vietnamica Lelej, 1979

Okayasu, Juriya, 2023, Discovery of the velvet ant genus Orientilla Lelej from Laos (Hymenoptera, Mutillidae, Dasylabrinae), with description of a related new species from India, Journal of Hymenoptera Research 96, pp. 817-834 : 817

Orientilla vietnamica Lelej, 1979

Figs 3 , 4 , 8 , 11

Orientilla vietnamica Lelej, 1979: 1066, ♀, holotype ♀ (Nha Trang, S. Annam, Vietnam) [Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia]; Lelej 1996a: 105, ♀; Lelej 2005: 113; Okayasu et al. 2018: 309, ♀; Williams et al. 2019: 11, ♀; Pagliano et al. 2020: 132; Thaochan et al. 2022: 164, ♂♀.

Diagnosis.

Female. Head red; clypeal medial elevation forming subtriangular area; clypeal subtriangular area delimited by carina extending nearly to clypeal lateral margin (Fig. 8 ); hypostomal carina sharp; antenna dark; humeral carina sharp; mesopleuron evenly convex, not spinose (Fig. 3 ); legs black; T1 and T2 posterior margins with complete pale setal bands; T1 short and broad, with dorsal T1 length 0.64-0.76 × T1 width and 0.33-0.40 × T2 length (Fig. 11 ); T2 slender, 1.80-2.03 × wider than T1, with lateral margins weakly convex (Fig. 11 ); T2 with medial pale setal spot, distance between medial spot and posterior band subequal to spot diameter; T3 with pale setal band; S1 carina short, reaching anterior 1/4 of S1; S2 felt line short. Male. Unknown.

Material examined.

Laos • 1♀; Vientiane; May 1995 [EUM] . Thailand • 1♀; Khon Kaen; 15 Oct. 1972; M. Sato leg. [EUM] • 1♀; Chiang Mai, Omkoi District ; 17°50'49.9"N, 98°22'33.0"E; 950-1010 m alt.; 10 Sep. 2016; R. Mizuno; Dry dipterocarp forest [THNHM] • 1♀; same collection data as for preceding; 27 Jun. 2017 [THNHM] • 1♀; same collection data as for preceding; 28 Jun. 2017 [THNHM] • 1♀; same collection data as for preceding; 18 Jul. 2019 [THNHM] • 1♀; same collection data as for preceding; 19 Jul. 2019 [THNHM] • 1♀; same collection data as for preceding; 20 Jul. 2019 [THNHM] • 1♀; same collection data as for preceding; 21 Jul. 2019 [THNHM] .

Distribution.

Laos: Vientiane (new record). Myanmar: additional data unavailable ( Lelej 2005; Williams et al. 2019). Thailand: Chiang Mai, Khon Kaen, Phetchaburi, Ubon Ratchathani ( Williams et al. 2019). Vietnam: Khanh Hoa ( Lelej 1979; Williams et al. 2019).

Remarks.

At Omkoi District, this species was collected on a trail through a dry dipterocarp forest during the rainy season ( Mizuno et al. 2019; R. Mizuno, pers. comm. 2017).

Figures

Figures 1 - 6. Orientilla spp., ♀, habitus 1, 2 O. tamaderai sp. nov., holotype 3, 4 O. vietnamica Lelej, Laos 5, 6 O. nitens sp. nov., holotype 1, 3, 5 dorsal view 2, 4, 6 lateral view.

Figures 7 - 12. Orientilla spp., ♀ 7, 10 O. tamaderai sp. nov., holotype 8, 11 O. vietnamica Lelej, Laos 9, 12 O. nitens sp. nov., holotype 7 - 9 face 10 - 12 metasoma, dorsal view. White arrows indicate the subtriangular area on the clypeus.