A new species of Viridotheres is described from material in the collections of the Museum für Naturkunde, Berlin, representing the first record of the genus from Indonesia. The new species most closely resembles V. takedai Ahyong, Komai & Watanabe, 2012 from Japan, and, significantly, shares the well-developed G2 exopod. Males of a second species of pinnotherid crab in the Berlin collection, misidentified as Ostracotheres tridacnae (Rüppell, 1830), proved referable to Afropinnotheres dofleini (Lenz in Lenz & Strunck, 1914), from South Africa, for which only females were known in detail. The male of A. dofleini is redescribed and figured in detail for the first time. Notably, males of A. dofleini also have a gonopod 2 exopod, the first such report for the genus. Confirmation of the gonopod 2 exopod in A. dofleini and V. kupang sp. nov. highlights the increasing significance of the gonopod 2 exopod in pinnotherid systematics and morphology.