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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Epiplocylis

Epiplocylis Jorgensen, 1924

[ref. ID; 3597]
Lorica tall or low goblet-shaped; oral margin entire with a thin wall; suboral region often somewhat inflated; bowl globose, conical, or cylindrical, usually convex conical in the aboral region provided with a tapering horn with an acute tip; wall composed of separated lamellae with a fine primary structure, thickened in the suboral dilated part, posteriorly covered with an uneven coarse reticulation of the outer lamella, small ovate fenestrae often appearing in its meshes. (ref. ID; 3597)
  1. Epiplocylis acuminata (ref. ID; 4464)
  2. Epiplocylis blanda Jorgensen, 1929 (ref. ID; 4600)
  3. Epiplocylis calyx (Brandt) Jorgensen (ref. ID; 3597)
  4. Epiplocylis calyx var. labiosa Kofoid & Campbell (ref. ID; 3597)
  5. Epiplocylis constricta Kofoid & Campbell, 1929 (ref. ID; 4600)
  6. Epiplocylis deflexa Kofoid & Campbell, 1929 (ref. ID; 4600) reported year? (ref. ID; 3597)
  7. Epiplocylis healdi Kofoid & Campbell, 1929 (ref. ID; 4600)
  8. Epiplocylis labiosa Kofoid & Campbell (ref. ID; 4046)
  9. Epiplocylis lata Kofoid & Campbell, 1929 (ref. ID; 4600) reported year? (ref. ID; 3597)
  10. Epiplocylis pacifica Kofoid & Campbell (ref. ID; 3597, 4046)
  11. Epiplocylis undella (Ostenfeld & Schmidt) Jorgensen (ref. ID; 3597)
  12. Epiplocylis undella var. blanda Jorgensen (ref. ID; 3597)
  13. Epiplocylis undella var. constricta Kofoid & Campbell (ref. ID; 3597)
  14. Epiplocylis undella var. exquisita Kofoid & Campbell (ref. ID; 3597)
  15. Epiplocylis undella var. impensa (ref. ID; 3597)

Epiplocylis calyx (Brandt) Jorgensen (ref. ID; 3597)

Descriptions

Lorica conical cup-shaped, 1.3 oral diameters in length; suboral region slightly inflated through the remarkably thickened wall; bowl convex conical, abruptly narrowing in the aboral region; aboral horn tapering (16 degrees), 0.27 of the total length; reticulated zone wide, covering over the lower 0.8 of the bowl. (ref. ID; 3597)

Comments

The species differs from E. lata Kofoid & Campbell in conical outline. (ref. ID; 3597)

Measurements

Length 82; oral diameter 62; length of the aboral horn 23 um. (ref. ID; 3597)

Epiplocylis calyx var. labiosa Kofoid & Campbell (ref. ID; 3597)

Descriptions

Lorica elongate, 1.7 oral diameters in length; bowl broadest at the point of the suboral 0.1 of the total length, its greatest diameter 1.1 oral diameters, convex conical in the aboral region; aboral horn slender, 0.26 of the lorica, conical (15 degrees); coarse reticulation appearing in the lower 0.75 of the bowl; wall thickened in the upper 0.27 of the total length. (ref. ID; 3597)

Comments

The variety differs from the typical form of E. calyx (Brandt) in it slender proportions. (ref. ID; 3597)

Measurements

Length 74; oral diameter 45; length of the aboral horn 19 um. (ref. ID; 3597)

Epiplocylis deflexa Kofoid & Campbell, 1929 (ref. ID; 4600) reported year? (ref. ID; 3597)

Descriptions

Lorica globose, 1.7 oral diameters in length; bowl broadest in its anterior one-third of which the greatest diameter is 1.2 oral diameters, then gradually narrowing to a widely convex conical aboral region; aboral horn, stout, 1.8 of the total length, conical (26-30 degrees) to a pointed tip; wall thicker in the suboral region, composed of a coarser primary structure, which a coarsely reticulated zone in the lower half of the bowl, fenestration visible in meshes of a coarse reticulation. (ref. ID; 3597)

Comments

The species differs from E. undella var. constricta Kofoid & Campbell in the conspicuously observable coarse primary structure of the wall. (ref. ID; 3597)

Measurements

Length 90-92; oral diameter 55; length of the aboral horn 17 um. (ref. ID; 3597)

Epiplocylis labiosa Kofoid & Campbell (ref. ID; 4046)

Descriptions

The lorica is characterized by coarse reticulation over 3/4 of bowl; the anterior portion lacks coarse reticulation. A variety of this species has a slight anterior flare. Fine reticulation on the anterior portion of the bowl is visible in the SEM preparations. (ref. ID; 4046)

Comments

Hada (1938) viewed this species as a variety of Epiplocylis calyx (Brandt) Jorgensen. (ref. ID; 4046)

Measurements

The dimensions taken from SEM micrographs are: length 57-66, width 39-40 um (n=2). (ref. ID; 4046)

Epiplocylis lata Kofoid & Campbell, 1929 (ref. ID; 4600) reported year? (ref. ID; 3597)

Descriptions

Lorica rotund, 1.56-1.67 oral diameters in length; suboral region dilated, free from a coarse reticulation, its width one-fourth of the height of the bowl, its greatest diameter 1.14-1.19 oral diameters; bowl subcylindrical or slightly tapering in the upper main part, rounded in the aboral region; aboral horn comparatively stout, conical (18-20 degrees) to a pointed terminal, 0.18-0.28 of the total length; wall abruptly thickened in the non-reticulated suboral zone. (ref. ID; 3597)

Comments

The species differs from E. calyx (Brandt) and its varieties in being more cylindrical in the bowl and more roundly convex conical in the aboral region. (ref. ID; 3597)

Measurements

Length 64-70; oral diameter 41-44; length of the aboral horn 12-20 um. (ref. ID; 3597)

Epiplocylis pacifica Kofoid & Campbell (ref. ID; 3597, 4046)

Descriptions

The lorica is characterized by coarse reticulation on the posterior 1/3 of bowl; the anterior rim is smooth and even. (ref. ID; 4046)

Measurements

The dimensions of the lorica are: length 98-117, width 59.4+/-1.7 um (n=12). (ref. ID; 4046)

Epiplocylis undella (Ostenfeld & Schmidt) Jorgensen (ref. ID; 3597)

Descriptions

Lorica goblet-shaped, 1.7-1.9 oral diameters in length; bowl subcylindrical in its upper half, slightly dilated near the portion of its anterior one-third, convex conical (60-90 degrees) in the aboral region; aboral horn forming an inverted tall cone of 10-20 degrees with a pointed tip, of which the length is 0.20-0.32 of the total length; coarse reticulation appearing in the narrowing aboral region, having ovate fenestrae in most of its meshes. (ref. ID; 3597)

Comments

The species differs from E. deflexa Kofoid & Campbell in the structure of the upper clear zone. Remarkably varying in shape, proportion, and caudal elongation, this species has four varieties besides the type form. (ref. ID; 3597)

Measurements

Length 100-128; oral diameter 55-75; length of the aboral horn 25-36 um. (ref. ID; 3597)

Epiplocylis undella var. blanda Jorgensen (ref. ID; 3597)

Descriptions

Lorica elongate, 2 oral diameters in length; bowl nearly cylindrical except a reticulated convex conical (85 degrees) aboral region; aboral horn 0.23 of the total length, tapering (15-20 degrees) to a distal point. (ref. ID; 3597)

Comments

The variety differs from the typical form of E. undella (Ostenfeld & Schmidt) in having a longer and more cylindrical bowl. (ref. ID; 3597)

Measurements

Length 130; oral diameter 69; length of the aboral horn 30 um. (ref. ID; 3597)

Epiplocylis undella var. constricta Kofoid & Campbell (ref. ID; 3597)

Descriptions

Lorica 1.6-1.8 oral diameters in length; bowl rotund, inflated in the suboral region, broadest at the anterior 0.20-0.24 of the total length, its greatest transdiameter 1.1-1.2 oral diameters; aboral region convex conical (90 degrees); aboral horn tapering (15-17 degrees) to a pointed tip, 0.21-0.25 of the total length; wall coarsely reticulated in the aboral 0.35 of the bowl. (ref. ID; 3597)

Comments

Though Kofoid & Campbell's E. pacifica is different from the present variety in a little larger size and a somewhat wider reticulated zone, it is probably merged into this variety judging from the close resemblance of the general outline. (ref. ID; 3597)

Measurements

Length 95-100; oral diameter 56-57; length of the aboral horn 20-25 um. (ref. ID; 3597)