Alderfly
Guides
Protosialis glabella
Protosialis glabella is a species of alderfly in the family Sialidae, order Megaloptera. The genus Protosialis represents one of several genera within Sialidae, a family of aquatic insects whose larvae are predatory and develop in freshwater habitats. Adults are typically nocturnal and short-lived, with reduced mouthparts and a primary focus on reproduction. The species was described by Ross in 1937. Megalopterans as a group are considered primitive holometabolous insects, retaining many ancestral characteristics.
Sialis
Holarctic Alderflies
Sialis is a genus of alderflies in the family Sialidae, characterized by small, brown, heavy-bodied insects with forewings 10–20 mm long. The genus is distinguished from other Megaloptera by having fewer than fifteen square cells along the upper edge of the front wings. Adults are diurnal and active in late spring. Larvae are aquatic predators that develop over two years before pupating in shoreline soil.
Sialis iola
Sialis iola is a species of alderfly described by Ross in 1937. As a member of the family Sialidae, it belongs to the order Megaloptera, a small group of aquatic insects closely related to dobsonflies and fishflies. The species is known to occur in North America, though specific details about its biology and ecology remain poorly documented. Like other alderflies, its larvae are presumed to be aquatic predators in freshwater habitats.
Sialis itasca
Sialis itasca is a species of alderfly in the family Sialidae, described by Ross in 1937. As a member of the order Megaloptera, it belongs to a small group of primitive holometabolous insects. The species is known from North America, with minimal observational records available. Like other alderflies, adults are associated with riparian habitats near the aquatic environments where their larvae develop.
Sialis mohri
alderfly
Sialis mohri is a species of alderfly in the family Sialidae, described by Ross in 1937. It is found in North America. Like other alderflies, it belongs to the order Megaloptera, a small group of aquatic insects whose larvae are predatory and develop in freshwater habitats. The species name honors Dr. Charles Mohr, an entomologist who collected the type specimens.
Sialis nevadensis
Sialis nevadensis is a species of alderfly in the family Sialidae, order Megaloptera. It was described by K. Davis in 1903 and is native to North America. The genus Sialis comprises aquatic insects whose larvae are predatory and develop in freshwater environments. Adults are typically found near streams and rivers during their brief aerial phase.