- Latin Name: Tunga penetrans
- Latin Family Name: Hectopsyllidae
- Common Name: Chigoe Flea
- Other Names: Jigger, Chigger, Chique, Sand Flea, Jigger Flea, Chigoe, Chigo, Chigo Flea, Nigua, Burrowing Flea
Origin:
This flea is found throughout most of the world. It is tropical in origin and may only be found in the southern U.S. as well as all of Latin America.
Biology:
These fleas have an unusual biology in that they generally live in soil and sandy areas, but on a regular basis they will get onto a host animal to feed and then fall off again. The female, when ready to produce her eggs, needs a final blood meal and at this time she burrows into the skin of the host animal, head first to allow the tip of the abdomen to protrude so that she can breathe. Over the next 2 weeks she swells to the size of a pea, produces several dozen eggs that are released to drop to the soil, and following this the female flea dies. On humans the infection is nearly always on the feet, due to barefoot activities in infested areas, and the point of infection may be a large blister with a black dot in the center, which is the flea. This infection is referred to as “tungiasis”. Other areas of the body that contact bare skin with infested soils, such as hands or arms, may also be the site of the infection.
Identification:
The adult flea lacks both genal (below the head) and pronotal (behind the head) combs, and also lacks a patch of bristles on the hind coxa that are present in other “sticktight” fleas. They are relatively small and have very long mouthparts.
Characteristics Important to Control:
Prevention of infections by wearing shoes and other clothing when active in areas known to be infested are the main control. These fleas will also infect many other animals.
