The presence of denticles in the external surface, oral cavity, fins, and clasper of Elasmobranchii has been widely reported. These structures, called body denticles, may be observed on the body surface of sharks. Dermal ...

Shark skin is predominantly specialized for swimming and protection, with the dermal denticle being the main structure associated with these abilities. The dermal denticle is a mineral structure with a unique morphology ...

The oral denticles of some elasmobranchs are found on the surface of the oral cavity and are homologous to those on the body surface, being well developed, independent and non-growing, with varying morphology and distribution ...

Os dentículos dérmicos são uma sinapomorfia em Chondrichthyes, e revestem além do tegumento, a membrana nictitante e a cavidade orofaríngea, desempenhando diferentes funções dependendo de sua morfologia e localização no ...

Three new species of Leptohyphes Eaton,1882 (Ephemerotera: Leptohyphidae) are described,diagnosed and illustrated from nymphs collected in Colombia. Geographical ranges and ecological notes relating important environmental ...

A new species of Leptohyphes Eaton (Ephemerotera: Leptohyphidae) is described, diagnosed and illustrated from nymphs collected in the Pantepui region in Southeastern Venezuela. Leptohyphes kukenan sp. nov. is similar to ...

A new species of Tricorythodes Ulmer (Ephemeroptera: Leptohyphidae) from Uruguay is described and illustrated based on nymphs and adults. Tricorythodes biluhue sp. nov. is related to T. arequita Traver, T. mirca Molineri, ...

Camponotus vittatus Forel is a poorly studied Neotropical ant, which is very common in Brazil. Larval descriptions are useful to systematics, as larval characters aid with genus-level differentiation, and ant larvae lie ...