Noun
gonopore (plural gonopores)
A small genital opening in the female of some insects etc.
During copulation, the "male" individual uses his copulatory organ to transfer sperm to his partner's gonopore and fertilisation is internal. Source: Internet
They are longer, on average, than the Peripatopsidae and also have more leg pairs, numbering between 22 and 43—the gonopore is always between the penultimate pair. Source: Internet
They have between 13 and 25 pairs of legs, behind or between the last of which is the genital opening (gonopore). Source: Internet