Image de Dermacentor Koch 1844

Description :

Under a magnification of 801X, this scanning electron micrograph (SEM) depicted a dorsal view of an unidentified male Dermacentor sp. tick found upon a cat in the suburbs of Decatur, Georgia, which measured approximately 3.5mm from its gnathosoma (seen here) (i.e., capitulum), which is where its mouthparts are located, to the distal abdominal margin (PHIL 9961). Note in PHIL 9959 and 9960, that the entire dorsum of this tick’s abdomen is covered by its tough scutum, or shield, categorizing it as a male. In female Ixodid-species ticks, the scutum only partially covers the dorsal abdomen. Seen clearly in this image is the base of the hypostome, which is one of the tick’s mouthparts that acts to pierce the host skin surface, thereby, anchoring the tick to the host as it obtains its blood meal. See PHIL 9964 for another view of the foliated hypostomal surface.
Created: 2006