Morphology of the ventral tube of males of Sphaeridia spp. A apex in S. aserrata Mari-Mutt, 1987 B posterior side in S. aspinosa Bretfeld & Trinklein, 2000 C posterior side in S. biclava Bretfeld & Trinklein, 2000 D posterior side in S. bivirgata Bretfeld, 2002 E posterior side in S. boettgeri Bretfeld & Gauer, 1994 F Detailed view of the anterior mandible-like processes of S. boettgeri G anterior side (apex) in S. boettgeri H apex in S. cardosi Arlé, 1984 I apex in S. cardosi (specimens from a different locality) J apex in S. carioca Arlé, 1984 K posterior side in S. catapulta L anterior side in S. cerastes Bretfeld & Gauer, 1994. Figures adapted from species’ original descriptions.

 
 
  Part of: Medeiros GS, Silva CDD, França JS, Godeiro NN, Bellini BC (2023) Two new species of Sminthurididae (Hexapoda, Collembola, Symphypleona) from Brazil with notes on Denisiella Folsom & Mills and Sphaeridia Linnaniemi. ZooKeys 1173: 1-41. https://doi.org/10.3897/zookeys.1173.106855