Before the wasp-waist: comparative anatomy and phylogenetic implications of the skeleto-musculature of the thoraco-abdominal boundary region in basal Hymenoptera (Insecta) L. Vilhelmsen Original Article Pages: 185 - 221
First evidence of unpigmented rhabdomeric photoreceptors in a Microstomum species (Plathelminthes, Macrostomorpha, Microstomidae) and ultrastructure of photoreceptor-like ciliary aggregations B. Sopott-Ehlers Original Article Pages: 223 - 229
Ultrastructural observations of the spermatogenesis of the hermaphroditic solitary coral Balanophyllia europaea (Anthozoa, Scleractinia) Stefano GoffredoTiziana TelòFranca Scanabissi Original Article Pages: 231 - 240