The female velvet ants (aka modkhong) of southern Thailand (Hymenoptera: Mutillidae), with a key to the genera of southeast Asia Author Williams, Kevin A. Author Lelej, Arkady S. Author Okayasu, Juriya Author Borkent, Christopher J. Author Malee, Rufeah Author Thoawan, Kodeeyah Author Thaochan, Narit text Zootaxa 2019 2019-05-07 4602 1 1 69 journal article 26916 10.5281/zenodo.2669927 f32a6f5a-0c9f-43c4-a273-4bc325ece96e 1175-5326 2669927 F066A962-743F-4899-AFAE-485C5A51EF2F 13a. Promecilla decora ( Smith, 1879 ) ( Figs 12 , 65–67 ) Mutilla decora Smith 1879 : 200 , ; Magretti, 1892 : 213 , ; Zavattari 1910 : 9 . Smicromyrme decora : Pagden 1934a: 465 , , ; Mickel 1935 : 288 , ; Pagden, 1949 : 222 , , ; Sinotilla decora : Lelej 1995b: 19 ; 2005: 55; Okayasu 2017 : 166 . Promecilla decora : Brothers & Lelej 2017 : 57 , , . Diagnosis. FEMALE. This species can be recognized by having the dorsal face of the pronotum with a lateral tooth, T2 with a basomedial whitish spot, having the sculpture of T2 with dense small punctures, and the metasoma dark metallic blue. Body length 4–7 mm . MALE. See Pagden (1949) . Material examined ( 9 ♀ ). MALAYSIA , Kelantan , 12 km E border Kelantan-Perak , 24.VII.1992 , C.W. and L.B. O’Brien ( 1♀ CASC ) . THAILAND : Krabi , 14 km NNE Krabi , Phnom Bencha Mountain Resort, 8.208 o N 98.937 o E , 80 m , 2.IV.2017 , MKT ( 2♀ CSCA ) ; Nakhon Si Thammarat , 4.4 km N Hin Tok , Mountainside rubber farm, 8.303 o N 99.849 o E , 7.IV.2017 , MKT ( 1♀ CSCA ) ; Phatthalung , 2.4 km S Ban Na , Farm , 7.543 o N 99.883 o E , 50 m , 5.IV.2017 , MKT ( 2♀ CSCA QSBG ) ; Phetchabun , Khao Kho National Park , 16 o 39.549'N 101 o 0 8.198'E , 168 m , 9-10.I.2007 , pan trap , S. Chachumnan and S. Singtong , T1387 ( 1♀ QSBG ) ; Phetchaburi , Kaeng Krachan , Baan Maka Nature Lodge , 12.840 o N 99.590 o E , 140 m , 22–23.V.2018 , MKT ( 1♀ CSCA ) ; Surat Thani , Khlong Sok , Khao Sok Jungle Huts , 8.909 o N 99.526 o E , 70 m , 14.V.2018 , MKT ( 1♀ CSCA ) . Distribution. China ( Yunnan ), Thailand ( Krabi , Nakhon Si Thammarat , Phatthalung , Phetchabun , Phetchaburi , and Surat Thani ), Myanmar , Malaysia ( Kelantan , Pulau Pinang , Kuala Lumpur ), and Indonesia ( Java ). Host . Reared from nests of a widely distributed, mud-daubing solitary wasp Pison argentatum Shuckard, 1838 ( Hymenoptera : Crabronidae ) (Pagden 1934b), which is also known as a hunter of both web-building and non-webbuilding spiders of Salticidae , Araneidae , Lycosidae and Oxyopidae ( Starr 2004 ) . Pagden (1934b) mentioned that this species probably attacks other species of Pison as well. Remarks. The metallic blue metasomal color is less distinct than in Sinotilla cyaneiventris . The evenly convex T2 with smaller and finer punctures is useful for separating this species from S. belokobylskiji .