参考文献：
Huang G-Q, Weigel A, Chang E-M, Zhang G-M (2024) A revision of some species of Souvanna Breuning, 1963, Mispila Pascoe, 1864, and Athylia Pascoe, 1864 (Coleoptera, Cerambycidae, Lamiinae). ZooKeys 1190: 107-119.
https://doi.org/10.3897/zookeys.1190.115573
Souvanna signata (Pic 1926) 梭氏天牛
Alidus signatus Pic, 1926c: 13. TL Vietnam: Tonkin. TD MNHN.
Enispia quadristigma Gressitt, 1940b: 156, pl. 4, fig. 12. TL China: Hainan. TD SYSU. Synonymized by Huang et al., 2024: 108.
Athylia quadristigma: Breuning, 1960e: 166.
Mispila (Mispila) signata: Breuning, 1961c: 281.
Souvanna phoumaiBreuning, 1963d: 39, figs page 39 & 40. TL Laos. TD BPBM. Synonymized by Huang et al., 2024: 109.
Mispila (Dryusa) coomani Breuning, 1968c: 858 (nec Mispila coomani (Pic, 1934)). TL Vietnam. TD MNHN. Synonymized by Huang et al., 2024: 109.
Souvanna signata: Huang et al., 2024: 108, figs 1-2.
Distribution China: Hainan, Yunnan. Vietna, Laos, Thailand.
Souvanna signata (Pic 1926) 梭氏天牛
=Alidus signatus Pic, 1926 标壮天牛
Souvanna signata (Pic 1926) 梭氏天牛
=Athylia quadristigma (Gressitt, 1940)四点凸额天牛
=Enispia quadristigma Gressitt, 1940四点恩天牛
正模
副模
Souvanna signata (Pic 1926) 梭氏天牛
=Souvanna phoumai Breuning, 1963梭氏天牛
Souvanna signata (Pic 1926) 梭氏天牛
=Mispila (Dryusa) coomani Breuning, 1968库氏皱额天牛
云南和泰国的新鲜标本
阅读文献的时候随手摘录的。然后今天（2024年12月13日）看了一下，天牛图片网站的错误还没有更新。2025年1月17日又看了一下，网站还是错误的。两者差异太大了吧
右边的皱额天牛猜测采自香港，不懂得它到底是coomani还是tholana
