Hirata Stag Beetle

We found a few of these stag beetles (hirata-kuwagata) when we were out beetle hunting last night. It was great to find a male and female feeding together on tree sap. We brought them home to take some photographs and then, this morning, I took them back to the same place to release them.

This species of stag beetle shows a lot of variation in the serrations on its mandibles, but the main identification feature is a split labrum (“upper lip”).

I found a very interesting scientific paper on the problem of imported and released pet stag beetles interbreeding with the native populations: here (pdf file).

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Coleoptera: Lucanidae
Dorcus titanus
(aka. Serrognathus platymelus)
Hirata stag beetle = hirata-kuwagata

Location: Tsurugidake Natural Park, Kurate, Fukuoka-ken (google map)

1 thought on “Hirata Stag Beetle

  1. WOW(0o0)!!!
    Those sure are beautiful stag beetles.
    Also I’ll see about getting a picture of that unknown insect I found and it just might be a Parasitic wasp.
    Also sorry for my poor typing its just I have so much to say and I forget stuff so easy also
    I am deeply sorry for putting so many comments
    I’m its getting over whelming for you and annoying at the same time.

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