“The First Case of Gynandry in Mygalomorphae: Pterinochilus Murinus, Morphology and Comments on Sexual Behavior (Araneae: Theraphosidae)”, Álvaro Laborda, Fernando Pérez-Miles2017-08 (; similar)⁠:

A bilateral gynandromorph specimen of the tarantula Pterinochilus murinus (Pocock1897) is here described and illustrated. This constitutes the first formal report of gynandry in a mygalomorph spider.

In addition, encounters with conspecific females were studied…The gynandromorph did not perform courtship in any of the 4 encounters with females and females did not show any sexual response. In one trial a female attacked the gynandromorph and damaged leg #1.

The possible explanations for this case of gynandry are discussed.

Figure 1: Gynandromorph of Pterinochilus murinus. Habitus, dorsal view, scale: 200 mm.

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The First Case of Gynandry in Mygalomorphae: Pterinochilus Murinus, Morphology and Comments on Sexual Behavior (Araneae: Theraphosidae)