Figure 88 in Morphological phylogeny of cobweb spiders and their relatives (Araneae, Araneoidea, Theridiidae)

Figure 88. SEM images of theridiid egg sacs. A, B, Latrodectus geometricus. A, sac with fairly densely woven fibres (232-0). B, details of individual fibres (233-0). C, D, Thwaitesia sp. C, loosely woven sac, the outermost fibres extremely loose (232-1). D, details of an extremely spiny fibre (233-1), perhaps a protection against predators/parasites. The phylogenetic distribution of spiny eggsac fibres is unknown. E, F, Argyrodes sp. E, densely woven sac with smooth fibres (233-0) and a distinct stalk (230-1). F, details of stalk, a synapomorphy of Argyrodinae. G, H, Theridion sp. G, dense egg sac. H, details of fibres. Scale bars: A, C, E, G, 100 Mm; F, 50 Mm; B, D, H, 10 Mm.