Biology and control of the itch mite, Sarcoptes scabiei, on swine

Abstract

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Answer to September 2019 Photo Quiz

“…(The adult male or female mite is 0.2 to 0.25 mm or 0.30 to 0.45 mm in length, respectively [8].) Characteristic mite anatomic structures included the chelicerae (Ch) (paired toothed [chelate] mouth parts), four segmented legs (L) (two on each side of the Ch; arrows point to the two on the right), the gnathostoma (Gn) (an anterior tube through which food is carried and to which the mouth parts are attached), notogastric spines (NS) (rod-shaped structures), notothoracic cones (NC) (acorn-shaped structures; six in total, one circled), dorsal dens (DD) (chitinous, triangular structures located on the dorsal surface), an internal developing egg (E), and the anus (An) (9).…”