Proctophyllodes troncatus, Robin, 1877

Byers, K. A. & Proctor, H. C., 2014, Like A Glove: Do The Dimensions Of Male Adanal Suckers And Tritonymphal Female Docking Papillae Correlate In The Proctophyllodidae (Astigmata: Analgoidea)?, Acarologia 54 (1), pp. 3-14 : 9

Proctophyllodes troncatus measurements

Distributions of body length for P. troncatus adult males, adult females, and nymphs are displayed in Figure 4 . Adult males ranged in size from 250 – 285 µm in length and were significantly smaller than adult females in length which were 330 – 380 µm (t 38 = 22.6, P <0.001). For nymphs, there were two distinct size clusters; nymphs with docking papillae (n = 81) ranged in size from 240 – 375 µm in length and were significantly larger than nymphs without docking papillae (n = 115) which were 175 – 255 µm in length (t 194 = 20.6, P <0.001).

Figures

FIGURE 4: Size distributions of Proctophyllodes troncatus adult females, adult males and nymphs with and without docking papillae. Body size was measured as the length of the idiosoma (µm) from the anterior margin of the prodorsum to the posterior region of the body excluding the terminal hyaline appendages in adult females and the opisthosomal lamellae in males. Nymphs were catego- rized as having docking papillae or lacking docking papillae. Adult females were significantly larger than adult males as indicated by an unpaired t-test (t38 = 22.6, P <0.001). Similarly, nymphs with docking papillae were larger on average than were those without docking papillae (t194 = 20.6, P <0.001).