What is spermalege?

Spermalege

The spermalege (also known as the organ of Berlese) is a special-purpose organ found in bed bugs that appears to have evolved to mitigate the effects of traumatic insemination. The spermalege has two embryologically distinct parts, known as the ectospermalege and mesospermalege. The evolution of the spermalege as a female counter-adaptation for traumatic insemination was first proposed by Jacques Carayon in 1966.

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Some articles on spermalege:

Homosexual Traumatic Insemination
... observed two morphologically different kinds of spermalege in Afrocimex constrictus, a species in which both male and females are traumatically inseminated ... In particular, they observed males, and females who had male spermalege structures, were inseminated less often than females with female spermalege structures ...
Afrocimex Constrictus
... his genitals, and ejaculates into her body cavity, into a special organ called the spermalege ... males have - like females - evolved a spermalege ... The male spermalege looks similar but not identical to the typical female spermalege and males receive fewer stabbings than females ...
Traumatic Insemination - Bed Bug Adaptation
... ectospermalege and mesospermalege (referred to collectively as spermalege), these organs serve as sperm-receptacles from which sperm can migrate to the ovaries ... All bed bug reproduction occurs via traumatic insemination and the spermalege ... (The exact characteristics of the spermalege vary widely across different species of bed bugs.) The spermalege are generally found only in females ...
Spermalege - Function
... The spermalege structure serves to reduce the wounding and immunological costs of traumatic insemination ...