Kissing bugs
Kissing bugs, triatoma protracta, are parasites of pack rats, living in their nests, and feeding on their blood, while the rat sleeps. Eggs are laid within the nest, and the kissing bug nymphs will also feed rat blood. Sooner or later, the pack rat will die, by predation most likely, and the dependent kissing bugs will not have anything to eat. Starvation forces them to leave the nest and seek a new host; this activity is most common at dusk, after prolonged hot spells. Being strong fliers, they are attracted to lights, but do not flutter around lights, like moths; they will land and walk the remaining distance. If a kissing bug enters your home, remember, it is there for food, and you are the target.
Kissing bugs appear to be attracted to heat and odor. People report finding them in their beds, basically waiting. It is customary for people that have a lot of kissing bugs, to take the sheets off, and check their beds before going to bed.
The name ‘kissing bug’ comes from reports, back in gold rush days, of people being bitten around the lips. This author has not seen that, and most reports of bites are on other body parts. This author was once bitten by one, on the foot. I never felt the bite, but the bite was prominent, and I’d categorize it as a nasty bite, large and really annoying. I tore the place apart looking for it and never found the bug, until…. it came back to get a second feeding a week or so later.
Below are images of adults and nymphs.
Specimens below collected by Paul Cooper, Jason Price, Heather Nordstrom.
Click on an image to enlarge it.
It bit a lady, twice.
Kissing bug, Triatoma. Calaveras County, September 15, 2014.
Kissing bug on a ruler
a close-up of a spot on the kissing bug
A view of the compound eyes of a kissing bug
the head and thorax of triatoma
The kissing bug abdomen area, detail
Kissing bug image by Paul Cooper, 8 June 2015.
Detail of head of kissing bug, ventral view. Specimen collected by Jason Price, LaGrange area, July 2015.
Detail of abdomen, dorsal view, of kissing bug.
Detail of wing cover of kissing bug, dorsal view.
Detail of head of kissing bug, dorsal view. Ocelli visible. Specimen collected by Jason Price, LaGrange area, July 2015.
Detail of head of kissing bug, dorsal view. Specimen collected by Jason Price, LaGrange area, July 2015.
Detail of kissing bug, dorsal view. Specimen collected by Jason Price, LaGrange area, July 2015.
Detail of kissing bug, ventral view. Specimen collected by Jason Price, LaGrange area, July 2015.
Detail of tip of proboscis of kissing bug.
Kissing bug nymphs
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymph, probably first instar. Specimen collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Highlight on proboscis.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymphs, probably first instars. Specimens collected approximately 3 September 2015, Sonora California, in a bed.
Kissing bug nymph. From a residence near Vallecito, Ca, 3 November 2015. Specimen collected by Ryder Richards.
Kissing Bug Bites Can Cause Anaphylactic Shock and Death
Kissing Bug (Triatoma spp.) Intrusion into Homes: Troublesome Bites and Domiciliation
The Kiss of Death: A Rare Case of Anaphylaxis to the Bite of the “Red Margined Kissing Bug
Chamber of Commerce Official’s Death Laid to ‘Kissing Bug’ Bite
Chagas Disease in California
Human and sylvatic Trypanosoma cruzi infection in California.
“This is the first case of indigenously acquired Chagas’ disease reported from California and the first case recognized in the United States since 1955. This investigation suggests that transmission of sylvatic Trypanosoma cruzi infection to humans occurs in California but that Chagas’ disease in humans is rare.”
