Arachnida

These "black-legged ticks", Ixodes scapularis, are found on a wide rage of hosts including mammals, birds and reptiles. These ''black-legged ticks'', Ixodes scapularis, are found on a wide rage of hosts including mammals, birds and reptiles. The Brown Recluse spider, Loxosceles reclusa, has a distribution throughout North America. Enlarged view of mouth parts of an American Dog Tick, Dermacentor variabilis, magnified 779x. This Chilean patient presented with skin lesions on her arm 72 hours after a bite from a Loxosceles laeta brown spider. This is a photograph of the Loxosceles laeta, the “Chilean recluse” spider of Central South America. This child presented with facial skin lesions ten days after a bite from a Loxosceles laeta brown spider. Note the skin lesions on the arm of a patient 24 hours after a bite from L. laeta, the brown “Chilean recluse” spider. Note the skin lesions on the arm of a patient two months after a bite from a L. laeta, brown “Chilean recluse” spider. Note the skin lesions on the arm of a patient 24 hours after a bite from L. laeta, the brown “Chilean recluse” spider. Note the skin lesions on the arm of a patient six days after a bite from L. laeta, brown “Chilean recluse” spider. This is an illustration of the life cycle of Sarcoptes scabei, the causal agent of Scabies. 24hrs after a chigger bite, genus Trombicula, this patient presented with a red welt or bleb at the bite site. This is a photomicrograph of a female ham mite, a species of the suborder Sarcoptiformes. This is a tick of the genus Ixodes in the nymphal stage of its life cycle. This is a male Ixodes ricinus tick (smaller) shown copulating with a female tick (larger). This is a Sarcoptes scabiei var. hominis or “itch mite”, often associated with the transmission of human scabies. This is a female “Lone star tick”, Amblyomma americanum, and is found in the southeastern and midatlantic United States. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a ventral view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This is a dorsal view of the “soft tick” Carios kelleyi, formerly Ornithodoros kelleyi, or the “Bat Tick”. This illustration shows the basic characteristics of the Class Arachnida whose members include spiders, ticks and mites. This photograph shows a mite, a member of the Class Arachnida, and the Order Acari. This photograph of 2 ticks was taken during a 1972 study of disease carriers and pests found in and around migrant labor camps. This “Black Widow” spider, Latrodectus mactans, was photographed during a study of migrant labor camp disease vectors. This drawing of a bed bug and a brown recluse spider shows common body characteristics of the Phylum Arthropoda members. This is an illustrated key that identifies some of the spiders that bite man, along with their morphologic characteristics. This illustration reveals the morphologic characteristics on the ventral surface of the male mite Laelaps nuttalli. This drawing reveals the morphologic features on the ventral surface of the protonymph staged mite, Laelaps nuttalli. This illustration reveals the morphologic characteristics on the dorsal surface of the female mite Dermanyssus gallinae. This drawing reveals the morphologic characteristics on the dorsal surface of the female mite Caloglyphus spinitarsus. This drawing depicts the ventral aspect of a female Dermanyssus gallinae mite during its deutonymph stage of development. This drawing of a female “red mite”, Dermanyssus gallinae, reveals the insect’s ventral morphologic characteristics. This illustration reveals the features found on the dorsal surface of the female mite, Pyemotes ventricosus.