Cambarincola
Cambarincola Ellis, 1912 (ref. ID; 1923)
Superclass Clitellata: Class Branchiobdellida: Family Cambarincolidae (ref. ID; 6456)
Family Cambarincolidae (ref. ID; 6466)
ref. ID; 1923
Without setae; with posterior sucker; pharynx with dorsal and ventral chitinous jaws; commensal on crayfish. With two pairs of testes in segments 5 and 6. Body with appendages. Accessory sperm tube present. Body cylindrical, not flattened, posterior end not conspicuously enlarged, anterior nephridia opening to the outside through a single pore. (ref. ID; 1923)
- Cambarincola barbarae Holt, 1981 (ref. ID; 6651) reported author and year? (ref. ID; 6466)
- Cambarincola carcinophilus Holt, 1973 (ref. ID; 6651)
- Cambarincola chirocephala Ellis, 1943 (ref. ID; 1923)
- Cambarincola chirocephalus (ref. ID; 6466)
- Cambarincola elevata Goodnight, 1940 (ref. ID; 1923)
- Cambarincola ellisi Holt, 1973 (ref. ID; 6651)
- Cambarincola fallax Hoffman, 1963 (ref. ID 6651) reported author and year? (ref. ID; 6456)
- Cambarincola floridana Goodnight, 1941 (ref. ID; 1923)
- Cambarincola gracilis Robinson, 1954 (ref. ID; 6651)
- Cambarincola hoffmani Holt, 1973 (ref. ID; 6651)
- Cambarincola holti Hoffman, 1963 (ref. ID; 6638 redescribed paper)
- Cambarincola inversa Ellis, 1919 (ref. ID; 1923)
- Cambarincola jamapaensis Holt, 1973 (ref. ID; 6651)
- Cambarincola macrocephala Goodnight, 1943 (ref. ID; 1923)
- Cambarincola macrodonta Ellis, 1912 (ref. ID; 1923)
- Cambarincola mesochoreus Hoffman, 1963 (ref. ID; 6651) reported author and year? (ref. ID; 6466)
- Cambarincola micradenus Holt, 1973 (ref. ID; 6651)
- Cambarincola montanus (G., 1940) (ref. ID; 6651)
- Cambarincola nanognathus Holt, 1973 (ref. ID; 6651) reported author and year? (ref. ID; 6466)
- Cambarincola olmecus Holt, 1973 (ref. ID; 6651)
- Cambarincola pamelae Holt, 1984 (ref. ID; 6651) reported author and year? (ref. ID; 6466)
- Cambarincola philadelphica (Leidy, 1851) (ref. ID; 1923)
- Cambarincola philadelphicus (ref. ID; 6466)
- Cambarincola serratus Holt, 1981 (ref. ID; 6651)
- Cambarincola speocirolanae Holt, 1984 (ref. ID; 6651)
- Cambarincola shoshone Hoffman, 1963 (ref. ID; 6651)
- Cambarincola susanae Holt, 1973 (ref. ID; 6651)
- Cambarincola toltecus Holt, 1973 (ref. ID; 6651)
- Cambarincola vitrea Ellis, 1919 (ref. ID; 1923)
Cambarincola barbarae Holt, 1981 (ref. ID; 6651) reported author and year? (ref. ID; 6466)
Descriptions
The acrosome is one of the longest reported in branchiobdellidans and the acrosome tube is helical. A distinct ridge runs along the external helical crest of the anterior portion of the tube, but does not extend along the posterior portion. The acrosome vesicle extends anteriorly to contact the plasma membrane below the prominent apical corona. The vesicle extends anteriorly to contact the plasma membrane below the prominent apical corona. The vesicle extends posteriorly to the end of the acrosome tube, where it is invaginated to form the subacrosomal space. The space is filled with unstructured material and has a barely visible perforatorium located near a thickened or inwardly directed margin known as the limen in the basal region. In a few spermatozoa, the acrosome-vesicle membrane was observed to have regular digitiform processes extending at right angles into the subacrosomal space. The nucleus is slightly twisted, with 3-4 gryes, and has conical concavities in both anterior and posterior surfaces. The midpiece is short and the mitochondria are slightly twisted. The central axonemal microtubules from the flagellum extend anteriorly to the midpoint of the midpiece. The peripheral, basal portion of the flagellum contains electron-dense material and a large helical fiber is coiled all around the flagellum for its whole length. The axoneme has a prominent central sheath and terminates with an end piece. (ref. ID; 6466)
Descriptions
Major annulations of body segments distinctly and visibly elevated over minor annulations. (ref. ID; 1923)
Descriptions
The acrosome is short and has a twisted acrosome tube with a helical ridge running along its crest for 2 gyres. The apical corona is indistinct and the underlying acrosome vesicle contains a centrally located electron-dense rod. The vesicle terminates posteriorly before the end of the acrosome tube, leaving a region called the basal chamber. The posterior end of the vesicle consists of an expanded ring with the centrally located invagination passing anteriorly to form the subacrosomal space. Located in the posterior space and surrounded by the ring is the electron-dense subacrosomal rod. The nucleus has a slight helical twist and is indented in the posterior surface but not in the anterior. The midpiece is short and penetrated for over half its length by the central doublets of the tail. The tail has electron-dense material around its basal region, a helical fiber coiled around the shaft, an axoneme with a prominent central sheath, and an end piece. (ref. ID; 6466)
Descriptions
Major annulations of segment 8 only elevated. (ref. ID; 1923)
Cambarincola fallax Hoffman, 1963 (ref. ID 6651) reported author and year? (ref. ID; 6456)
Descriptions
In the spermatozoon of C. fallax the straight acrosome tube tapers from posterior to anterior before bending 90 degrees and enlarging. A hollow ridge, continuous with the tube wall, winds around the tube for 1.5 revolutions. The acrosome vesicle is enclosed by the tube except at the anterior tip, where the vesicle passes through the enlarged end and contacts the plasma membrane in an apical button. Dense, fibrous "fuzzy" material (= apical corona; Ferraguti and Jamieson 1987) is sometimes present on the surface of the apical button. An invagination starts from the posterior end of the acrosome vesicle and extends anteriorly to the level at which the helical ridge starts. The invagination surrounds the acrosome rod or perforatorium, which is difficult to recognize as it is "embedded" in electron-dense subacrosomal material. At the distal end of the acrosome rod is a spherical structure containing disorganzied, tightly packed membranes. A similar structure in the form of a ring is located at the proximal end of the acrosome vesicle that surrounds the posterior invagination site. The nucleus has a conical concavity at the anterior end and a shallow concavity at the posterior end. The four mitochondria in the mid-piece are slightly twisted about the central axis of the spermatozoon. The tail consists of a flagellum and an end-piece. The flagellum starts from a short, cup-shaped electron-dense structure in contact with the mitochondria. Although a true centriole is absent in this and other branchiobdellidan species, the origin of the modified centriole has been confirmed by following the structure's development during spermiogenesis (M. Ferraguti, unpublished observations). The central apparatus of the flagellum penetrates this centriolar remnant and reaches the mitochondria. The axoneme has a prominent central sheath, multiple-link heads, and glycogen granules. A helical structure made of electron-dense material runs around the tubules of the flagellum (pitch about 1.7 µm) and under the plasma membrane. The helical ridge starts just posterior to the mid-piece. The tail terminates in a short non-axonemal end-piece about 1 µm long. (ref. ID; 6456)
Descriptions
Major annulations of segments 2 to 8 elevated. (ref. ID; 1923)
Cambarincola holti Hoffman, 1963 (ref. ID; 6638 redescribed paper)
Descriptions
Body terete, about 4.5 mm long, low dorsal ridges, supernumerary muscles present; head to body length 1:2 to 1:3, head wider than segment 1, dorsal lip 4 small lobes each subtending a tentacle, 3 pairs of small lateral lobes; oral papillae present; jaws large, dorsal triangular and ventral truncated triangle, dental formula 5/4; male reproductive organs usually extend to dorsad of segment, glandular atrium length subequal to segment diameter, prominent deferent lobes; prostate gland length subequal to glandular atrium, differentiated, ental bulb absent; muscular atrium present; bursa ovoid, penial sheath forms ental half, protrusible penis; spermatheca length about 3/4 segment diameter, duct length about equal to elongate oval bulb, ental process usually present. (ref. ID; 6638)
Descriptions
Upper jaw with 3 prominent teeth; if as, in a few species, 5 teeth are present, the 2 lateral ones are very small. (ref. ID; 1923)
Descriptions
Upper and lower jaws similar, appearing as large triangular blocks terminating in a sharp tooth, without lateral teeth, but with uneven margins. (ref. ID; 1923)
Descriptions
Middle tooth of upper jaw long and prominent when compared with the small, lateral teeth. (ref. ID; 1923)
Cambarincola mesochoreus Hoffman, 1963 (ref. ID; 6651) reported author and year? (ref. ID; 6466)
Descriptions
The acrosome is long. The acrosome tube is straight, supporting a helical ridge of at least three gyres anteriorly and a limen posteriorly. The acrosome vesicle protrudes beyond the anterior end of the tube and is covered with the plasma membrane and supports the thick apical corona over the tip. There are two rings of electron-dense material, the anteriormost being denser, in the protruded anterior part of the vesicle. The vesicle extends posteriorly against the wall of the tube. The posterior end of the vesicle terminates in a thickened ring surrounded by the limen. The basal invagination passes through the ring and extends into the vesicle as far as the anterior tip of the acrosome tube to form the subacrosomal space. The material in the space is unstructured and moderately electron-dense. Below the basal vesicular ring and covering the invagination is an electron-dense disc. The nucleus is straight and the anterior and posterior ends have concavities. The midpiece is long and only slightly penetrated by the central microtubules of the axoneme. A ring of electron-dense material surrounds the basal region of the flagellum, which has an axoneme with a prominent central sheath and is surrounded by small helical marginal fiber. (ref. ID; 6466)
Cambarincola nanognathus Holt, 1973 (ref. ID; 6651) reported author and year? (ref. ID; 6466)
Descriptions
The acrosome is very long, at least 20 µm, and the tube is straight with a helical ridge running 6 gyres around the anterior portion. The anterior portion of the acrosome vesicle protrudes slightly beyond the tube and the plasma membrane covering it supports a very pronounced apical corona. The posterior vesicle ends in a thickened ring parallel to the posterior end of the tube. The invagination through the posterior vesicle ring forms the subacrosomal space and this extends to the anterior end of the acrosome tube. The material in the space is usually more electron-dense in the posterior half than in the anterior. The nucleus is straight, about 5 µm long, and has indentations in both anterior and posterior surfaces. The midpiece is long and the pair of central microtubules of the axoneme from the flagellum penetrate midway into the midpiece. The flagellum has an axoneme with a prominent central sheath, and a helical marginal fiber coils around the tail. In the basal region of the flagellum the fiber starts and passes through a ring of electron-dense material, 6 µm, long, resulting in alternating pattern in sections. There is a short end piece. (ref. ID; 6466)
Cambarincola pamelae Holt, 1984 (ref. ID; 6651) reported author and year? (ref. ID; 6466)
Descriptions
The acrosome is long. The acrosome tube is twisted and the anterior portin only is accenturated by a helical ridge. The tube's wall at the posterior end turns inward to form a limen. The acrosome vesicle extends beyond the anterior end of the tube to form a spherical shape covered by the plasma membrane supporting a lightly staining apical corona. An electron-dense spheroid body is located subterminal in the anterior vesicle. The vesicle extends along the tube, with occasional digitiform extensions branching into the subacrosomal space, before terminating in a thick ring lining the limen. An incomplete ring, believed to be a relict secondary tube, is attached to the base of the thick vesicular ring. The basal invagination passes through the vesicular ring and extends almost to the anterior end of the tube to form the subacrosomal space. The space is filled with moderately electron-dense material, with a more electron-dense rod located basally and passing through the vesicular ring. The nucleus is twisted, with a long pitch, and both anterior and posterior surfaces have concavities. The midpiece is short and the central microtubules of the axoneme from the flagellum penetrate the midpiece only slightly. Around the basal portion of the flagellum is a ring of electron-dense substance. The flagellum has an axoneme with a prominent central sheath and a large helical marginal fiber coiled around the tail. An end piece is present. (ref. ID; 6466)
Descriptions
Upper and lower jaws dissimilar, upper jaw in the form of a triangle, ending in a short point with several minute denticulations on each side, apex of lower jaw bifurcated into two points with two minute denticulations on each side. (ref. ID; 1923)
Descriptions
The acrosome is long. The surface of the acrosome tube is smooth except for the internal-facing anterior portion, which has a serrated appearance in longitudinal section. The tube is twisted, with a long pitch. The acrosome vesicle forms a conical protrusion beyond the end of the tube and the protrusion beyond the end of the tube and the protrusion is covered by the plasma membrane, which supports a large, prominent apical corona. The protrusion contains an electron-dense-staining ring-shaped body and posterior to that is a second, less electron-dense ring. The acrosome vesicle extends posteriorly and occasional digitiform extensions of the inner acrosome membrane branch into the subacrosomal space. The vesicle terminates in a thickened ring before the limen to form a small basal chamber between the two. The invagitation from the basal chamber passes through the vesicular ring and extends to just below the second ring in the anterior vesicle region, thus forming a large subacrosomal space filled with electron-dense material. The same pitch in the acrosome continues in the nucleus. Although both ends of the nucleus have conical indentations, the posterior is largely filled with an electron-dense body. The midpiece is long and only slightly penetrated by the central microtubules of the flagellum's axoneme. The basal portion of the flagellum is surrounded by an outer ring of electron-dense material with an electron-dense disc in the center through which pass the central microtubules of the axoneme. The flagellum has an axoneme with a prominent central sheath, a marginal fiber, and an end piece. (ref. ID; 6466)
Descriptions
Middle tooth of upper jaw longer than the other 4 teeth but small enough that all 5 teeth may be considered subequal. (ref. ID; 1923)