Female human head louse, Pediculus humanus capitis.Technical settings : - focus stack of 46 images- microscope objective (Nikon achromatic 10x 160/0.25) directly on the body (with adapter ~30 mm)
Centers for Disease Control/Division of Parasitic Diseases and Malaria
EOL staff
Life cycle of the Pubic (or Crab) Louse (Pthirus pubis), an ectoparasite of humansPubic lice (Pthirus pubis) have three stages: egg, nymph and adult. Eggs (nits) are laid on a hair shaft (1). Females will lay approximately 30 eggs during their 3-4 week life span. Eggs hatch after about a week and become nymphs, which look like smaller versions of the adults. The nymphs undergo three molts (2, 3, 4) before becoming adults (5). Adults are 1.5-2.0 mm long and flattened. They are much broader in comparison to head and body lice. Adults are found only on the human host and require human blood to survive. If adults are forced off the host, they will die within 24-48 hours without a blood feeding. Pubic lice are transmitted from person to person most commonly via sexual contact, although fomites (bedding, clothing) may play a minor role in their transmission.From Centers for Disease Control Parasites and Health website.
Lu-Xi Liu, Kazunori Yoshizawa, Fa-Sheng Li, Zhi-Qi Liu
Zookeys
Figure 2.Terminalia of Neopsocopsis convexa sp. n.. A terminalia, lateral view B terminalia, dorsal view C hypandrium, posterior view D phallosome, lateral view E subgenital plate, ventral view F gonapophyses G internal plate, ventral view. Scales in mm. AB, CD, E–G to common scale.
Found this barklouse on some leaf litter, along with a short-winged individual (female?) to be posted later. This one is a male. Body length is 3mm, length to wing tips about 5 mm.-BugGuide account