本種は本州～沖縄に広く分布し、台湾からも知られる。本種は関東地方では５～10月頃に、アオキやタブに多く見られ、おそらくこれらの植物が寄主植物と思われる。個体数が非常に多い時期には、近隣の寄主植物以外の植物にも多くの個体が観察できる。オスはイノデの葉にもよく見られる。インドに分布するT. alis (Bhatti, 1967)は本種に非常に似るが、触角第３、４節の感覚錐がより短いこと、前胸背板の刻線が明瞭であること等で識別できる。

This species is widely distributed in Honshu to Okinawa and Taiwan. In Kanto area of Honshu, Japan, many individuals of this species occur on leaves of Aucuba japonica and Machilus thunbergii in May to October. Probably this species feed on these plats but it is also found on nearby unrelated plants when it outbreaks as T. elegans. An Indian species, T. alis (Bhatti, 1967) is very similar to this species but it can be distinguished from the later species by several character states such as antennal segments III and IV with shorter sense-cones, and pronotum with distinct sculpture lines.

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  Female

  

  Female

  

  Female

  

  Female head and thorax

  

  Male