Male Reproductive System of Cockroach

Male reproductive system

1.           In cockroach, sexes are separate. 
2.           In cockroach sexual dimorphic characters are indistinct. 
3.           Females are broader than the male and absence of anal style. 
4.           Male reproductive system of cockroach  consists of a pair of testes  
5.           Testis are lying on either side of ventral nerve cord lateral side in the 4th -6th    
         abdominal segments. 
6.           Each testis is tri-lobed structure. 
7.           From each testis arises a thin vas deferens, which opens into ejaculatory duct 
         through seminal vesicle. The ejaculatory duct opens into male gonopore situated 
         ventral to anus. 
8.           A characteristic mushroom shaped gland is present in the 6th-7th abdominal 
         segments which functions as an accessory reproductive gland.  
9.           The external genitalia are represented by male gonapophysis or phallomere  
         (these  are chitinous asymmetrical structures, surrounding the male gonopore). 
10.      The sperms are stored in the seminal vesicles and are glued together in the form  
        of bundles called  spermatophores  
11.      The sperms are discharged during copulation.