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Princess Dorcus

Dorcus Montivagus Montivagus

Description:

Dorcus is a genus of the family Lucanidae of stag beetles. Of the 30-odd species, most occur in Asia and India; two are found in southern Europe, and two species are from North America.

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18 Comments

outsidegirl0
outsidegirl0 7 years ago

nice series!

HarumKoh
HarumKoh 7 years ago

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. :)))

pamsai
pamsai 7 years ago

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.

pamsai
pamsai 7 years ago

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

HarumKoh
HarumKoh 7 years ago

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. :)))

pamsai
pamsai 7 years ago

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.

pamsai
pamsai 7 years ago

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!

HarumKoh
HarumKoh 7 years ago

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

Mr. Goldfish
Mr. Goldfish 7 years ago

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

pamsai
pamsai 7 years ago

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.

Mr. Goldfish
Mr. Goldfish 7 years ago

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. :)

pamsai
pamsai 7 years ago

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

HarumKoh
HarumKoh 7 years ago

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

pamsai
pamsai 7 years ago

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

Mr. Goldfish
Mr. Goldfish 7 years ago

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

pamsai
pamsai 7 years ago

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

pamsai
pamsai 7 years ago

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

stho002
stho002 7 years ago

Yes, a stag beetle. Possibly Dorcus montivagus

pamsai
Spotted by
pamsai

山梨市 (Yamanashi), 中部 (Chubu Region), Japan

Spotted on Sep 9, 2013
Submitted on Feb 5, 2014

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