Which roach species do I have?

[bugmankeith]

Last year I had ordered a few "blaberus giganteus" nymphs, and all have became adults. Trouble is, I have many different looking roaches. (all came in the same shipment) So PLEASE tell me, what roaches do I actually have?

If any are hybrids, please say what species bred to become them.

Nymphs

What the nymphs turned into. (these are not all my adults, but the rest match a roach pictured below.)

 

[sidguppy]

they look a lot like someone managed to crossbreed Blaberus fusca with Blaberus craniifer.

but the last picture sure lokks like Blaberus giganteus

how big are they?

 

[bugmankeith]

The first 2 adult pictures are roaches the same size. The roach in the last picture is bigger than all the other roaches, and I have another like it.

 

[bugmankeith]

Ok so I got one opinion, anyone else?

 

[Elytra and Antenna]

It's extremely unlikely the giganteus crossed with the fusca/craniifer hybrids, you almost certainly just have 2 giganteus and some hybrids in the same group.

B.giganteus has very different male genitalia from the other two which is why a crossing is likely impossible. The fusca look sort of like giganteus which is why some people think the hybrids include giganteus lineage. fusca and craniifer have similar male genitalia and are considered different races of the same species by some taxonomists.

 

[bugmankeith]

So not counting the last adult picture, you think they are fusca or craniifer? I know craniifer comes in black and the brown "european" form, mabye that is what I have?

 

[thedude]

you got blaberus sp(obviusly lol0... i raise a colony of B. gianteus and B. fusca in the same tank (so im hoping i can hybrid) only 25 or so strong (it was 14 last year) and ive only seen a few mating attempts and only one egg batch i do belive it hatched, i hope you can get them goin it'sa bitch

the B. fusca i got that part of th colony this year, and the B. gigantea is the sp that i started w/

 

[Elytra and Antenna]

So not counting the last adult picture, you think they are fusca or craniifer? I know craniifer comes in black and the brown "european" form, mabye that is what I have?

They could just be normal B.fusca but they seem a little dark and the pure strain are less common than the hybrids.

 

[Elytra and Antenna]

So who sold you 'fusca' as B.giganteus and did you pay normal price ($3-5 a nymph)?

 

[Elytra and Antenna]

you got blaberus sp(obviusly lol0... i raise a colony of B. gianteus and B. fusca in the same tank (so im hoping i can hybrid) only 25 or so strong (it was 14 last year) and ive only seen a few mating attempts and only one egg batch i do belive it hatched, i hope you can get them goin it'sa bitch

the B. fusca i got that part of th colony this year, and the B. gigantea is the sp that i started w/

Fortunately for the rest of us it shouldn't be physically possible but what possible benefit do you feel there would be in breeding B. giganteus with a smaller species? Can we see a picture of your B.giganteus?

 

[bugmankeith]

So who sold you 'fusca' as B.giganteus and did you pay normal price ($3-5 a nymph)?


Well i'd rather not say but it's 2 people from here, and yes I was charged normal pricing $3-$5

The roaches are very healthy just the fact I didnt exactly get what I payed for.