Female northern black widow spinnerets, SEM

Female northern black widow spinnerets, SEM

C037/0001 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 26.0MB

Downloadable file size: 2.5MB

Price image Pricing

Please login to use the price calculator


Credit: DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY

Caption: Scanning electron micrograph (SEM) of northern black widow spider female spinnerets (Latrodectus variolus). There are 3 pairs of spinnerets that secrete silk through piriform gland spigots. This venomous spider is found throughout the eastern US, and west to eastern Texas. The female has the typical black widow red hourglass-shape mark on the underside of her abdomen. The marking is incomplete or split in the middle. Northern black widows also have a series of red spots along the dorsal midline of the abdomen, and many have a series of lateral white stripes on the abdomen. The female black widow is dangerous to humans, as her bite contains a significant amount of nerve toxin (latrotoxin). This neurotoxin causes pain and swelling, and in rare cases, may even be fatal. The genus gets its name from the female's practice of devouring the male after mating. Magnification: x35 when shortest axis printed at 25 millimetres.

Release details: Model release not required. Property release not required.

Keywords: 212612b, arachnid, arachnids, aranae, araneae, black, black and white, dimorphic, dimorphism, electron, female, formation, gland, glands, invertebrate, invertebrates, latodectus, latrodectism, latrodectus, latrotoxin, micrograph, monochrome, nerve, neurotoxin, northern, piriform, production, scanning, scanning electron micrograph, secretion, sem, sexual, sexually, silk, size, spider, spiders, spigot, spigots, spinneret, spinnerets, theridiidae, toxin, variolus, venom, venomous, widow, widows

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.