Arthropods

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. A blood-engorged female Aedes albopictus mosquito feeding on a human host. Plague infected male Xenopsylla cheopis 28 days after feeding on an inoculated mouse. The Brown Recluse spider, Loxosceles reclusa, has a distribution throughout North America. Scalar patterning of a butterfly's wing magnified 96x. A highly magnified single scale strut-like pattern from a butterfly's wing magnified 6127x. An electron micrograph of the chitinous shell covering the back of a ladybug magnified 1783x. An electron micrograph of the chitinous shell covering the back of a ladybug magnified 446x. An electron micrograph of a wasp's leg appendage revealing small, highly sensitive hairs on its surface magnified 108x. An electron micrograph of a wasp's leg appendage revealing small, highly sensitive hairs on its surface magnified 1724x. An electron micrograph of a wasp's leg appendage revealing small, highly sensitive hairs on its surface magnified 54x. An electron micrograph of a wasp's head region and the insect's compound eye, magnified 35x. An electron micrograph of a wasp's head region and the insect's compound eye, magnified 148x. Dorsal view of an American Dog Tick, Dermacentor variabilis, magnified 21x. Dorsal view of the head region from an American Dog Tick, Dermacentor variabilis, magnified 98x. Dorsal view of the leg appendages of an American Dog Tick, Dermacentor variabilis, magnified 102x. Enlarged view of mouth parts of an American Dog Tick, Dermacentor variabilis, magnified 3134x. Dorsal view of the back of an American Dog Tick, Dermacentor variabilis, magnified 49x. Dorsal view of the back of an American Dog Tick, Dermacentor variabilis, magnified 790x. Shown here is a larva (left), and an adult female (right) of the oriental rat flea, Xenopsylla cheopis. This image shows the faces of two adult carpenter bees, Xylocopa virginica. These are two Southern yellow jackets, Vespula squamosa, a queen (Lt) and a worker (Rt). These are American cockroaches, Periplaneta americana. This is a female “Lone star tick”, Amblyomma americanum, and is found in the southeastern and midatlantic United States. Known as a vector for the West Nile virus, this Culex quinquefasciatus mosquito has landed on a human finger. This is an illustration comparing the Head Louse, Pediculus humanus, with the Pubic Louse, Phthirus pubis. This image was captured while a Head Louse, Pediculus humanus, was emerging from its egg. This is an enlarged view of a female head louse, Pediculus humanus var. capitis. 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 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 photograph of a wasp was taken during a 1972 study of disease carriers, and pests common to migrant labor camps. This photograph of a flea was taken during a 1972 study of disease carriers, and pests of migrant labor camps. This fly, Musca domestica, was photographed during a 1972 study of disease carriers, and pests of migrant labor camps. This photograph of a beetle was taken during a 1972 study of disease carriers, and pests of migrant labor camps. This “flour moth” larva (family Pyralidae) was taken during a 1972 study of disease carriers and pests of migrant labor camps. This adult flour moth (family Pyralidae) was photographed during a disease-carrier insect study around migrant labor camps. This photograph of a butterfly was taken during a 1972 study of disease carriers, and pests of migrant labor camps. This bedbug, Cimex lectularius, was photographed in 1972 during a study of disease carrying pests in migrant labor camps. This body louse, Pediculus humanus corporis, was photographed during a 1972 study of migrant labor camp disease vectors. These Oriental cockroaches, Blatta orientalis, were photographed during a study of migrant labor camp disease vectors. This photograph of a German cockroach was taken during a 1972 study of disease carriers, and pests of migrant labor camps. This photograph of mosquito pupae was taken during a 1972 study of disease carriers, and pests of migrant labor camps. This photograph of an adult cockroach was taken during a 1972 study of disease carriers, and pests of migrant labor camps. This photograph of two nymph cockroaches was taken during a 1972 study of disease carriers, and pests of migrant labor camps. This photograph of a cockroach egg capsule was taken during a 1972 study of disease carriers, and pests of migrant labor camps. Though this is an illustration of a mosquito, it reveals some of the basic characteristics of all adult insects. 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 shows the growth stages of the “American dog tick”, Dermacentor variabilis, from eggs to adult insects. This illustration shows the identifying morphologic structures of an adult female flea. This illustration shows the taxonomic details in the head region of the fly Siphona irritans. This illustration shows the taxonomic details in the head region of the fly Stomoxys calcitrans. This illustration shows the taxonomic details in the head region of the common housefly, Musca domestica. This illustration shows the lateral view of a fly’s thorax comprised of thoracic exoskeletal plates and bristles. This illustration shows the lateral view of a fly’s thorax comprised of thoracic exoskeletal plates and bristles. This illustration shows the details of a fly’s wing venation, which are important when taxonomically classifying these insects. 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. This illustration depicts the ventral features of the male louse, Hoplopleura oenomydis. This illustration depicts the ventral features of the male louse, Polyplax spinulosa. This drawing of female and male “chicken louse”, Eomenacanthus stramineus, reveals the insect’s ventral surface. This illustration of the female and male lice, Menopon gallinae, shows the ventral aspect of this species. This illustration depicts the ventral features of the male and female louse, Lipeurus caponis. This drawing depicts the morphologic characteristics of the ventral surface of the female and male louse, Goniodes gigas. This illustration of female and male lice, Goniodes dissimilis shows the ventral aspect of this species. This illustration of the female and male lice, Goniocotes hologaster, shows the ventral aspect of this species. This illustration of female and male lice, Cuclotogaster heterographus shows the ventral aspect of this species (Nitzsh). This illustration reveals some of the morphologic details found in the mosquito species Deinocerites cancer. This photograph depicts an adult male Oropsylla Montana flea, formerly known as Diamanus Montana. This Anopheles gambiae mosquito is obtaining a blood meal as it feeds on a human host.