Figures 4-9 from: Müller A, Praz C, Dorchin A (2018) Biology of Palaearctic Wainia bees of the subgenus Caposmia including a short review on snail shell nesting in osmiine bees (Hymenoptera, Megachilidae). Journal of Hymenoptera Research 65: 61-89. https://doi.org/10.3897/jhr.65.27704

Figures 4-9 Wainiasexsignata. 4 Brood cell partition built from yellow petal pieces of Asteroideae, which are partly covered with dark brown remnants of the larval cocoon; note the portion of leaf pulp at the right upper side of the partition used to glue the petal pieces to the inner shell surface 5 Partition of the nest plug 6 Nest plug consisting of a series of four partitions constructed from yellow Asteroideae petal pieces immediately followed by the nest closure at the shell opening, which consists of leaf pulp; the partition at the extreme right is the outermost brood cell partition 7 Yellow petal pieces adhering to the rear side of the nest closure 8 Anterior part of the nest plug with an additional wall of leaf pulp built in front of the second outermost plug partition 9Asteroideae petal pieces used to construct cell and plug partitions; petals in the upper row with traces of leaf pulp, which glued them to the inner shell surface.