2.1 Genus Aulacus Jurine, 1807

Aulacus: Jurine, 1807: 89 [descr.]; Blanchard, 1840: 300 [in key]; Bradley, 1908: 120 [in key]; Kieffer, 1912: 344 [in key], 370–376 [12 spp., descr]; Hedicke, 1939: 4 [in catalog]; Konishi, 1990: 638–641 [in key, revision of the genus Aulacus of Japan]; Alekseev, 1995: 39 [spp. of Russian Far East]; Smith, 2001: 268–277 [catalog of genus Aulacus]; Turrisi et al., 2009: 27–59 [phylogeny and generic concepts of Aulacidae]; Chen et al., 2016: 80 [in key].

Type species: Aulacus striatus Jurine.

Number of valid species from China: 5.

(1) Aulacus flavigenis Alekseev, 1986

Aulacus flavigenis Alekseev, 1986: 17 [descr.]; Sun & Sheng, 2007b: 121 [in key]; Turrisi et al., 2009: 56 [in checklist]; Sundukov & Lelej, 2015: 108-111 [descr., figs. 7, 8, 15, 16, 27]; Chen et al., 2016: 80 [in key], 81 [diag.], 119 [fig. 122, distribution map].

Aulacus salicius: Sun & Sheng, 2007b: 122 [in key], 122–124 [descr., SFPS]; Turrisi et al., 2009: 56 [in checklist]; Smith & Tripotin, 2011: 520 [diag.], 521 [figs. 1–5]. Synonymized by Sundukov & Lelej 2015.

Distribution. China (Heilongjiang), South Korea, Russia (Alekseev 1986; Sun & Sheng 2007b; Smith & Tripotin 2011; Sundukov & Lelej 2015; Chen et al. 2016).

Biology. Host: Xiphydria palaeanarctica Semenov-Tian-Shanskij ( Hymenoptera, Xiphydriidae) (Smith & Tripotin 2011), Xiphydria popovi Semenov-Tian-Shanskij & Gussakovskij (Sun & Sheng 2007b).

(2) Aulacus magnus Chen, Turrisi & Xu, 2016

Aulacus magnus: Chen et al., 2016: 80 [in key], 81–83[descr., figs 1–12, holotype, ♀, IZCAS, IOZE1903950] .

Distribution. China (Hainan) (Chen et al. 2016).

Biology. Host unknown.

(3) Aulacus schoenitzeri Turrisi, 2005

Aulacus schoenitzeri: Turrisi, 2005: 798–799 [desc.; holotype, ♀, OLML], 803[figs. 1–4]; Sun & Sheng 2007b: 121 [in key]; Turrisi et al., 2009: 56 [in checklist]; Chen et al., 2016: 80 [in key], 83–84 [diag.], 119 [figs. 122, distribution map].

Distribution. China (Shaanxi) (Turrisi 2005; Chen et al. 2016).

Biology. Host unknown.

(4) Aulacus sinensis (He & Chen, 2002)

Aulacus erythrogaster: He et al., 2002: 149 [in key], 149–150 [descr. fig. 1, holotype, ♀, ZJU, No.903191], Sun & Sheng, 2007b: 122 [in key].

Aulacus sinensis: He & Chen, 2007: 66 [replacement name for Aulacus erythrogaster He & Chen, 2002]; Turrisi et al., 2009: 56 [in checklist]; Turrisi, 2013: 327 [in key], 332–333 [distribution and remarks]; Chen et al., 2016: 80 [in key], 84–85[diag.], 119 [distribution map].

Distribution. China (Zhejiang) (He et al. 2002; Chen et al. 2016).

Biology. Host unknown.

(5) Aulacus striatus Jurine, 1807

Aulacus striatus: Jurine, 1807: 89–90 [descr.]; Sun & Sheng 2007b: 122 [in key], 124 [1♀, specimen stored at Nankai University]; Turrisi et al., 2009: 56 [in checklist]; Broad & Livermore, 2014: 2 [in list]; Chen et al., 2016: 85 [diag., the status of this species in China unclear], 119 [fig. 122, distribution map].

Distribution. China (Inner Mongolia), Europe (Jurine 1807; Sun & Sheng 2007b; Broad & Livermore 2014; Chen et al. 2016).

Biology. Unknown.