Princess Dorcus

nice series!

I checked red list of Yamanashi pref. and all japan.
Yamanashi red list doesn't have D.montivagus. (D.hopei is in list)
https://www.pref.yamanashi.jp/midori/doc...
all japan (government) red list doesn't have D.montivagus. (D.hopei is in list)
https://www.env.go.jp/press/file_view.ph...
Hyogo(my area) red list have D.montivagus. (D.hopei is in list too)
So you could find D.montivagus in the area. :)))

thanks stho002 for your original correct ID, Mr Goldfish for all your helpful comments, and to HarumKoh for all your research. It really helped to clarify the ID, especially as you could do it in Japanese.

Ahha, so Dorcus Montivagus Montivagus is a blend of D.rectus and D.hopei!! Great...

now I agree with ヒメオオクワガタ(Dorcus Montivagus Montivagus). :))
body shape and texture look like D.rectus but horn look like D.hopei.
wiki says D.montivagus live in 1000-1600m mountains and most appear in September.
Your spotting point is high ground level area, near Mt.Fuji and Alps and it was September. :))
This is red-list in our local government link. No.203 is D.montivagus.
http://www.pref.hyogo.lg.jp/JPN/apr/hyog...
I deleted comment because I understood what stho002 said. :)))

What do you think HarumKoh? The photos on this new link looks the closest. The Princess Dorcus, Dorcus Montivagus Montivagus looks like a good match. Doesn't look redish in the link.

Woops HarumKoh, your comment disappeared! Checked the 2 links anyway. On Kokuwagata in Wikipedia, i think the horns look straighter and longer than on mine.
On the Dorcus Hopei, the head looks too broad and the horns are definitely divided into 2.
The angle I took the photo is not the best for ID, sorry!

I understood what D. montivagus is. it's redlist stag beetle. hmm...
http://ja.wikipedia.org/wiki/%E3%83%92%E...

That's fine pamsai. You probably couldn't really measure it with your finger so exactly unless you have a really good eye.

Hmmmm... removed the ID. I'm sorry Mr Goldfish, but I can't remember the size in mm. or in any measurement in fact. Should have put a finger in there for reference!

Didn't really do much research, just thought HarumKoh might know what he is talking about, living in the area. My mistake.

Thanks for following up... your efforts are appreciated.

I asked to the size in millimeters so that somebody could compare with Dorcus hopei (synonym now I think) similar in length to see if the horns are really different and that was one way to make it more certain to see if it is D. montivagus.

I do not know much about these stag beetles so I cannot tell very well but it does not look very much like Dorcus rectus. :)

thank you Mr Goldfish for reminding me to specify the size.

it's september and the place isn't tropical area. may be dorcus rectus. it can pass the winter as an adult. :)

Golly, it's hard to remember, but it wasn't so big. Around 5cm, maybe a little bigger... The other one was bigger.

How large is the stagbeetle (in millimeters) from tip of mandibles to the end of the abdomen?

can anyone clarify if this is a Dorcus montivagus, Stag Beetle?

thanks stho002. Shall I wait and see if anyone confirms this ID before posting?

Yes, a stag beetle. Possibly Dorcus montivagus