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31 results for “Pithemera”
FIGURE 10 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 10. Amynthas gracilis. (A) Both male pores (arrows) and the associated genital markings (USNM 125011). (B) Left male pore (arrow) and the associated genital markings (USNM 125019). (C) Right spermatheca in VII. (D) Right prostate gland and its duct (arrow). (E) Right intestinal caecum. C–E from USNM 125021.
FIGURE 2 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 2. Schematic diagrams of cross sections of earthworms showing locations of spermathecal pores in intersegmental furrows. When spermathecal pores are present in a specimen, most pheretimoid earthworms in North America have spermathecal pores that are ventrally (A) or ventrolaterally (B) located. The only except is Amynthas rodericensis, whose spermathecal pores are located dorsally (C).
FIGURE 1 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 1. Color photographs of live individuals of (A) Amynthas agrestis, (B) Amynthas corticis, (C) Amynthas gracilis, (D) Amynthas hupeiensis, (E) Amynthas minimus, (F) Amynthas morrisi, (G) Amynthas tokioensis, (H) Metaphire californica, (I) Metaphire hilgendorfi, (J) Metaphire posthuma, (K) Pithemera bicincta, and (L) Polypheretima elongata, showing interspecific variations in colorations and body shapes. Specimens are from US (A, B, D, G, I) and Taiwan (C, E, F, H, J, K, L). Photo credit: Chih-Han Chang (A, B, D, E, G, H, I) and Wen-Jay Chih (C, F, J, K, L). The photographs of A. minimus and M. californica have been previously presented in Chang et al. (2009a).
FIGURE 6 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 6. Male pores of (A) Amynthas corticis, (B) Amynthas carnosus, (C, D) Amynthas gracilis, (E, F) Amynthas loveridgei, (G, H) Amynthas morrisi, and (I) Amynthas tokioensis.
FIGURE 5 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 5. Male pores in invaginations/copulatory pouches with no apparent genital markings. (A, B) Metaphire californica, showing copulatory pouches not everted (A) or everted (B). (C, D) Metaphire houlleti, showing copulatory pouches not everted (C) or everted (D).
FIGURE 3 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 3. Female pores. (A) Female pore (arrow) on XIV on the ventral side of clitellum in the pheretimoid earthworms. (B) Pithemera bicincta is the only pheretimoid species in North America with two female pores (arrows).
FIGURE 4 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 4. Male pores with large genital markings in some or all of XVII–XXIV. (A) Amynthas hupeiensis. (B) Amynthas rodericensis. (C) Metaphire posthuma. (D, E) Polypheretima elongata.
FIGURE 8 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 8. Amynthas carnosus. (A) Right male pore region and the associated genital markings (arrows). (B) Pre-clitellar genital markings paired mid-ventral on VIII and IX and eight spermathecal pores right behind eight genital markings (arrows). (C) Right spermathecae in VII–IX. Only the spermathecal diverticulum in IX is visible. (D) Right spermatheca in IX. (E) Right prostate gland and its duct (arrow). (F) Right intestinal caecum.
FIGURE 9 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 9. Amynthas corticis. (A, B) Left male pores (USNM 124810 and 124880). (C) Four spermathecal pores in 5/6/7/8/9 (arrows) and genital markings in VII–IX; lateral view. (D) Paired genital markings on VII–IX; ventral view. (E) Right spermathecae in VI and VII. (F) Right prostate duct, showing absence of prostate glands. (G) Right intestinal caecum. C–G from USNM 124947.
Figure 3 in New Polypheretima and Pithemera (Oligochaeta: Megascolecidae) species from the Mt. Malindang Range, Mindanao Island, Philippines
Figure 3. Schematic drawings of the internal morphology of (A) Polypheretima mindanaoensis sp. nov., (B) Pithemera malindangensis sp. nov., (C) Pithemera duminagati sp. nov. and (D) Pithemera donvictorianoi sp. nov. Abbreviations: s, spermatheca; n, dense tufts of nephridia; h, heart; p, prostate gland; c, caecum. Scale bars: 5 mm.
Figure 1 in New Polypheretima and Pithemera (Oligochaeta: Megascolecidae) species from the Mt. Malindang Range, Mindanao Island, Philippines
Figure 1. (A) Map of the Philippines showing localities where species of Polypheretima (white dots) and Pithemera (black dots) have been collected. (B) Map of Mt. Malindang showing the localities where the Polypheretima and Pithemera species reported in this study were collected.
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