. Cattle ticks (Ixodoidea) of the United States. Ixodidae; Ticks. Fig. 165.—Tarsus IV of male E. calcaratus. After Birula, 1895, fig. 19. In his more extensive paper, published three years later, Koch (184:7, p. 121) again refers to this form, giving two illustrations (copied as tigs. 167, 168, in this paper), together with the following diagnosis and description: Jlfai^'.—Oval, very shining, posteriorly with three longitudinal grooves; yellow red; mouth shield [capitulum] reddish; palpi and legs yellow. Female.—Head shield [scutum] elongate, blood red, anteriorly in the middle field a fiery r
. Cattle ticks (Ixodoidea) of the United States. Ixodidae; Ticks. Fig. 165.—Tarsus IV of male E. calcaratus. After Birula, 1895, fig. 19. In his more extensive paper, published three years later, Koch (184:7, p. 121) again refers to this form, giving two illustrations (copied as tigs. 167, 168, in this paper), together with the following diagnosis and description: Jlfai^'.—Oval, very shining, posteriorly with three longitudinal grooves; yellow red; mouth shield [capitulum] reddish; palpi and legs yellow. Female.—Head shield [scutum] elongate, blood red, anteriorly in the middle field a fiery red spot; mouth shield [capitulum], palpi, and legs as in the male; body very large, fallen in dorsally, with the same three longi- tudinal grooves. Length of male seven-eighths line, of replete female 2i to 2| lines. The outline of the male tick is quite oval, still some- what narrow posteriorly and on the posterior margin somewhat l>luntly round; the surface is very finely, indistinctly, almost somewhat wrinkly punctate and very shining; in front of posterior margin are found three longitudinal grooves, of which the middle one is longer than the lateral and gutter shaped; anterior of this in the middle, two depressions and a shallow depression back of each of the two very fine small curved grooves of the indistinct head shield [scutum]. Mouth shield [capitulum] and palpi are small, the legs moderately long. The color of the body is a brownish yellow red, border- ing on the menning-red, darker in the middle of the back than on the sides. The mouth shield [capitulum] is lighter, reddish yellow. Palpi and legs are yellow. The replete female is broader anteriorly than posteriorly, rounded posteriorly, the outline being quite that of the sole of a shoe, on the back somewhat flat and almost fallen in, so that the lateral margins are perceptibly raised above the surface; the longitudinal grooves remain quite the same as in the male. The head shield [scutum] is narrow; elonga
Size: 1850px × 1350px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherwashi, bookyear1902
