Santa Clara River Natural History

Cornu aspersum, known by the common name garden snail, is a species of land snail. As such it is a terrestrial pulmonate gastropod mollusc in the family Helicidae, which include the most commonly familiar land snails. Of all terrestrial molluscs, this species may well be the most widely known. In English texts it was classified under the name Helix aspersa for over two centuries, but the prevailing classification now places it in the genus Cornu. less ↑

The Argentine ant, Linepithema humile (formerly Iridomyrmex humilis), is a dark ant native to northern Argentina, Uruguay, Paraguay, and southern Brazil. It is an invasive species that has been established in many Mediterranean climate areas, inadvertently introduced by humans to many places, including South Africa, New Zealand, Japan, Easter Island, Australia, Hawaii, Europe, and the United States. less ↑

Bagrada hilaris is a species of shield bug known by the common names bagrada bug and painted bug (See a short video at http://www.youtube.com/watch?v=gSj3AZoJIRM). It could be mistaken for or erroneously referred to as harlequin bug. It is native to much of eastern and southern Africa and parts of southern Europe and Asia. It is known elsewhere as an introduced species, including California and Arizona, where it was first reported in 2008. It is a major... less ↑

The cougar (Puma concolor), also known as the mountain lion, puma, panther, mountain cat, or catamount, is a large cat of the family Felidae native to the Americas. Its range, from the Canadian Yukon to the southern Andes of South America, is the greatest of any large wild terrestrial mammal in the Western Hemisphere. An adaptable, generalist species, the cougar is found in most American habitat types. It is the second heaviest cat in the Western... less ↑

The bobcat (Lynx rufus) is a North American mammal of the cat family Felidae, appearing during the Irvingtonian stage of around 1.8 million years ago (AEO). With 12 recognized subspecies, it ranges from southern Canada to northern Mexico, including most of the continental United States. The bobcat is an adaptable predator that inhabits wooded areas, as well as semidesert, urban edge, forest edges, and swampland environments. It persists in much of its original range, and populations... less ↑

Pogonomyrmex is a genus of harvester ants, occurring primarily in the deserts of North and South America. The genus name originated from the Greek language and refers to a beard-like structure, the psammophore, below the head (Greek πώγων/pōgōn, "beard" + μύρμηξ/murmēx, "ant"), which can be found in most species of the subgenus sensu stricto. The psammophore is used for gathering small seeds, helping to increase the efficiency of transportation of fine sand and pebbles during nest... less ↑

The genus Dasymutilla belongs to the Mutillidae family. The females of the genus are well known for their painful sting, which is where many gain their common name, Cow Killer. The female is wingless and often resemble large ants while the males still retain their wings. The larva of the Dasymutilla are external parasites to various types of hymenoptera. When disturbed the Dasymutilla makes a high-pitched squeaking sound identical to the Pogonomyrmex (Harvester ant). less ↑

Armadillidiidae is a family of woodlice, a terrestrial crustacean group in the order Isopoda. Unlike members of other woodlouse families, members of this family can roll into a ball, an ability they share with the outwardly similar but unrelated pill millipedes and other animals. It is this ability which gives woodlice in this family their common name of pill bugs or roly polies. The best known species in the family is Armadillidium vulgare, the common pill... less ↑

The Western Tiger Swallowtail (Papilio rutulus) is a common swallowtail butterfly of western North America, frequently seen in urban parks and gardens as well as in rural woodlands and riparian areas. It is a member of the Papilio genus, of which Papilio appalachiensis and Papilio xuthus are also members. It is a large, brightly colored and active butterfly, rarely seen at rest; its wingspan is 7 to 10 cm (~2.75 to 4 in), and its wings are yellow... less ↑

The raccoon (i/ræˈkuːn/, Procyon lotor), sometimes spelled racoon, also known as the common raccoon,North American raccoon,northern raccoon and colloquially as coon, is a medium-sized mammal native to North America. The raccoon is the largest of the procyonid family, having a body length of 40 to 70 cm (16 to 28 in) and a body weight of 3.5 to 9 kg (8 to 20 lb). Its grayish coat mostly consists of dense underfur which insulates against cold weather. Two of the raccoon's most distinctive features are its extremely dexterous... less ↑