lovebugfarm Posted July 19, 2016 Share Posted July 19, 2016 I just had 4 domino roaches mature and i took each out and looked at them but they all look like males. Is it common for one gender to mature faster then anouther? Any link or pics? I tryed to search gender on the forum and the word se x is blocked. Which i feel is an oversite since it means the same as gender. A search for female turned up top view pics. Also what is the term for iding gender based on underside last segement shape? Im a lil frazzled since these all look male. Pretty sure i have 3 more nymphs about to be adults i will take them out tomorrow to see if they are girls. Quote Link to comment Share on other sites More sharing options...
Tenevanica Posted July 19, 2016 Share Posted July 19, 2016 Therea sp. can have a male:female ratio of 10:1 sometimes. You can sex therea by looking at their antennae. Males have longer hairy antennae, (supposedly for detecting pheromones put of by the female) while females have short straight antennae. I don't know how to ventrally sex Polyphagids. Quote Link to comment Share on other sites More sharing options...
Hisserdude Posted July 19, 2016 Share Posted July 19, 2016 Sexing Corydiids/Polyphagids ventrally is quite easy, the adult female's last segment is very large and has a noticeable bulge, whist the male just has two small segments. See here: The female has one big last segment, and the male just has two small ones. Hope this helps! Quote Link to comment Share on other sites More sharing options...
lovebugfarm Posted July 19, 2016 Author Share Posted July 19, 2016 Thanks guys i guess the 10.1 ratio thing is whats going on. I will just enjoy watching them run around while I wait a year till the newly hatched nymphs mature. Quote Link to comment Share on other sites More sharing options...
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