How to sex Phileurus truncatus?

Lucanus

Lucanus

Lucanus
I originally thought that females have narrow tip of the horns while males have thick blob tip. But after couple of disections, I found out that my method was wrong. So I need help getting my Phileurus to be sexed. Can someone provide some pics and instructions on sexing these guys?

 
You may be confused or looking at a very small male. How about some photos of the horns and lower abdomen? If the horn shots in your photos posted in the picture section include both specimens you have two males.

 
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Orin said:
You may be confused or looking at a very small male. How about some photos of the horns and lower abdomen? If the horn shots in your photos posted in the picture section include both specimens you have two males.
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Crap. I won't be able to breed them then.

 
Specimen #1

998948_580262765369176_1552212216_n.jpg


Specimen #2

1238811_580262768702509_786194368_n.jpg


They are pretty equal in size

1175565_580262772035842_1249015828_n.jpg


1175716_580262805369172_691170518_n.jpg


So how do I sex these guys?

 
When you find a female you'll notice a distinctly different, v shape to the segment below the pygidium. It is strange to see a decent male with feminine horns.

 
I think the pair of P. truncatus I caught in the summer are indeed male and female instead of being two males.

Supposedly female :

1002097_555070894555030_899657212_n.jpg


1235111_580972605298192_541922904_n.jpg


Supposedly male :

1069369_555070931221693_406394691_n.jpg


1185583_580972618631524_2017749177_n.jpg


 
In your other thread you appear to have a bunch of shots (6) of the male's horns close up but only one further away shot of the possible female's horns and none are labeled (such as specimen 1 and 2). All 6 shots of the horn closeups are the same specimen? The abdomen shots above could look different if the shot was taken at a different angle or they might be male and female. It's actually really easy to sex them in person but camera angles and unexplained photos make it difficult.

Phileurus truncatus have specific requirements for egg laying, unlike the valgus and illatus.

 
Orin said:
It's actually really easy to sex them in person but camera angles and unexplained photos make it difficult.Phileurus truncatus have specific requirements for egg laying, unlike the valgus and illatus.
Click to expand...
Their last segment is distinctive from each other so I guess I have a pair.

What requirements do they have?

 
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