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44 results for “Polypheretima”
FIGURE 21 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 21. Pithemera bicincta. (A, B) Male pore regions and the associated genital markings of two specimens (USNM 124780 and 124781). (C) Two female pores in XIV (arrows); note the lighter color surrounding the female pores compared to that of the clitellum in the background. (D) Left spermathecae in V and VI. (E) Right prostate gland and its duct (arrow). (F) Right intestinal caecum in XXII, as opposed to in XXVII as in Amynthas and Metaphire. C–F from USNM 124780.
FIGURE 23 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 23. External (left, ventral view) and internal (right, dorsal view) morphology of a pheretimoid earthworm.
FIGURE 19 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 19. Metaphire houlleti. (A) Right male pore region (USNM 27574). (B) Right male pore region with an everted copulatory pouch. (C) Left spermathecae in VII–IX. (D) Left prostate gland and its duct (arrow). (E) Left intestinal caecum. B– E from USNM 125080.
FIGURE 18 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 18. Metaphire hilgendorfi. (A, B) Right male pore region and the associated genital markings, showing presence of a male pore only on one side and absence on the other (USNM 1421430). (C) Left male pore region with an everted copulatory pouch. (D) Right spermathecal pores in 6/7/8 and pre-setal genital markings on VIII and IX; ventrolateral view. (E) Pre-setal genital markings mid-ventral on VIII and IX. (F) Left spermatheca and accessory glands in VIII. (G) Left prostate gland and its duct (arrow). (H) Right intestinal caecum. C, E–H from one specimen in USNM 125091; D from another specimen in USNM 125091.
FIGURE 20 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 20. Metaphire posthuma. (A) Both male pore regions and the associated genital markings on XVII and XIX. (B) Right spermathecae in VI and VII. (C) Left prostate gland and its duct (arrow). (D) Left intestinal caecum. All from USNM 125139.
FIGURE 16 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 16. Amynthas tokioensis. (A) Right male pore and the associated genital marking (arrow). (B) Single spermathecal pore in 7/8 on the lower right (arrow), compared to its absence in 6/7 on the right and in 6/7/8 on the left; ventral view. (C) Left spermatheca in VIII. (D) Right prostate gland. (E) Right intestinal caecum. All photos from USNM 125070, three different specimens: A, specimen 1; B, C, specimen 2; D, E, specimen 3.
FIGURE 15 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 15. Amynthas rodericensis. (A) Both male pores (arrows) and the associated genital markings, showing two on each side. (B) Right male pore (arrow) with only the post-setal genital marking. (C) Right male pore with no genital marking. A–C all from USNM 125143, different specimens. (D) Paired dorsal spermathecal pores in 5/6/7/8/9 (arrows); dorsal view. The relatively light-colored pores can usually be easily seen due to the relatively dark dorsal pigmentation (USNM 125161). (E) Left spermathecae in VII–IX. (F) Left prostate gland and its duct (arrow). (G) Left intestinal caecum. E–G from the same specimen in USNM 125143.
FIGURE 17 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 17. Metaphire californica. (A, B) Right and left male pore regions from two different specimens (USNM 124785). (C) Left male pore region with the copulatory pouch everted. (D) Left spermathecae in VIII and IX. (E) Right prostate gland and its duct (arrow). (F) Right intestinal caecum. C–F from USNM 124784.
FIGURE 14 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 14. Amynthas morrisi. (A–E) Male pore regions with various numbers and positions of post-clitellar genital markings (USNM 125113, 125117, 45979, 125115, 26388). (F–H) Pre-clitellar genital markings (USNM 125117, 125113, 123116); ventral view. (I) Right spermathecae in VI and VII. (J) Left prostate gland and its duct (arrow). (K) Left intestinal caecum. I–K from USNM 125114.
FIGURE 13 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 13. Amynthas minimus. (A) Both male pore regions. (B) Sizes compared to a one cent coin (19.05 mm diameter). USNM 125106.
FIGURE 12 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 12. Amynthas loveridgei. (A) Left male pore and the associated genital markings, showing four papillae and the primary male pore (arrow) at the middle (USNM 125056). (B) Right male pore and the associated genital markings, showing three papillae and the primary male pore (arrow) at the middle (USNM 125056, a different specimen from that in A). (C) Left male pore and the associated genital markings. The primary male pore (arrow) can barely be seen at the middle of three papillae. (D) Two sets of genital markings associated with the two left spermathecal pores (not seen); ventrolateral view. (E) Right spermathecae in VI and VII. (F) Left prostate gland and its duct (arrow). (G) Left intestinal caecum. C–G from one of the syntypes (USNM 136910).
FIGURE 11 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 11. Amynthas hupeiensis. (A) Right male pores (arrow) and the associated genital markings. (B) Right spermathecae in VII–IX. (C) Left prostate gland and its duct (arrow). (D) Left intestinal caecum. All from USNM 125079.
FIGURE 7 in Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima (Clitellata: Megascolecidae)
FIGURE 7. Amynthas agrestis. (A) Right male pore region and the associated genital marking (arrow) (USNM 1421431). (B, C) Wrinkled surface on VII and VIII (USNM 124771; ventrolateral view and 1421431; ventral view). (D) Spermathecal pores in 5/6/7/8 (arrows) (USNM 124772; lateral view). (E) Left spermatheca in VIII (USNM 124777). (F) Left prostate gland and its duct (arrow) (USNM 1421431). (G) Left intestinal caecum (USNM 124777).
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.
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