Pacifica is a city in San Mateo County, California, on the coast of the Pacific Ocean between San Francisco and Half Moon Bay.
The Plecoptera are an order of insects, commonly known as stoneflies. Some 3,500 species are described worldwide, with new species still being discovered. Stoneflies are found worldwide, except Antarctica. Stoneflies are believed to be one of the most primitive groups of Neoptera, with close relatives identified from the Carboniferous and Lower Permian geological periods, while true stoneflies are known from fossils only a bit younger. Their modern diversity, however, apparently is of Mesozoic origin.
Taeniopterygidae are a family of stone flies with about 110 described extant species. They are commonly called willowflies or winter stoneflies and have a holarctic distribution. Adults are usually smaller than 15 mm.
The Perlidae are a family of stoneflies, with more than 50 genera and 1,100 described species. The majority of the Perlidae are found in eastern North America, but they occur worldwide except for Antarctica and parts of Africa. Their lifecycles range between one and three years. They adults emerge in the summer; they are very active and known to be attracted to light sources. They are usually very sensitive to changes in environment.
San Pedro Creek is a perennial stream in the City of Pacifica, San Mateo County, California in the San Francisco Bay Area whose tributaries originate on Sweeney Ridge in the Golden Gate National Recreation Area and Montara Mountain in the Santa Cruz Mountains.The creek mainstem flows 2.5 miles (4.0 km) through the San Pedro Valley to its mouth near Shelter Cove of the Pacific Ocean The stream is notable as the 1769 campsite for Gaspar de Portolà before he ascended Sweeney Ridge and discovered San Francisco Bay.
The Leuctridae are a family of stoneflies. They are known commonly as rolled-winged stoneflies and needleflies. This family contains at least 390 species.
Parks' Salmonfly is a traditional dry fly imitating adults of the family of giant stoneflies or salmonflies (Pteronarcyidae). The most commonly imitated species is Pteronarcys californica or salmonfly common throughout Western North America from British Columbia to California.
Perlodinae is a subfamily of springflies in the family Perlodidae. There are at least 20 genera and 60 described species in Perlodinae.
Acroneuriinae is a subfamily of common stoneflies in the family Perlidae. There are about 32 genera and about 520 described species in Acroneuriinae.
Hesperoperla hoguei, the banded stone, is a species of common stonefly in the family Perlidae. It is found in North America.
Hesperoperla is a genus of common stoneflies in the family Perlidae. There are at least two described species in Hesperoperla.
Sweltsa is a genus of green stoneflies in the family Chloroperlidae. There are more than 50 described species in Sweltsa.
Capnia is a genus of small winter stoneflies in the family Capniidae. There are at least 120 described species in Capnia.
Utacapnia is a genus of small winter stoneflies in the family Capniidae. There are about 11 described species in Utacapnia, found primarily in the Rocky Mountains of North America. Most species in this genus were first described by Alan V. Nebeker and Arden R. Gaufin.
Sepedon pacifica is a species of marsh fly.
Grossoseta pacifica is a species of flat-footed flies.
Comantella pacifica is a species of robber flies in the family Asilidae.
Zapada oregonensis, the Oregon forestfly, is a species of spring stonefly in the family Nemouridae. It is found in North America.
Eccoptura is a genus of common stoneflies in the family Perlidae. There is at least one described species in Eccoptura, E. xanthenes. It is known as the "yellow stone" and is found in North America.
Perla is a genus of common stoneflies in the family Perlidae. There are at least 30 described species in Perla.
