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14 results for “Haemopis”
FIGURE 10 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 10. Haemopis septagon Sawyer & Shelley, 1976. Map of locality records. Haemopis septagon is currently known from the mid-Atlantic coastal plain from South Carolina to southern New Jersey. Scale bar: 100 km. See APPENDIX for compilation of locality records.
FIGURE 8 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 8. Haemopis septagon Sawyer & Shelley, 1976. Dissected juvenile specimen from Albemarle Peninsula, North Carolina (HS-5) showing the mid-body crop is compartmentalized by sphincter-like muscle bands. Inset: schematic enlargement of consecutive segments XV and XVI, respectively, displaying anterior and posterior crop caeca per segment. Arrow indicates posterior position of pharynx (at segment XI). acc XV, anterior crop caecum of segment XV; c, crop; eb, ejaculatory bulb; gXVI, ganglion of segment XVI; mb, muscle band; n, nephridium of segment XVI; p, pharynx; pr, prostate; ps, penis sheath. Scale bar: 1.0 mm.
FIGURE 7 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 7. Haemopis septagon Sawyer & Shelley, 1976. Reproductive system of Haemopis septagon from the Albemarle Peninsula, North Carolina. Comparison of the reproductive structures of A. terrestrial individual (HS-4), B. "aquatic" individual (HS-3), and C. juvenile individual (HS-5). For clarity the intertwining male and female ducts are separated and drawn semischematically to same relative scale. Note as the individuals mature the penis sheath and vaginal stalk extend progressively to the posterior, coupled with increased twisting of these structures. The simplest condition is found in the juvenile. In this species precise location of the point of flexion of the penis sheath and vaginal stalk is not species specific per se and therefore is of little taxonomic significance. e, epididymis; eb, ejaculatory bulb; ed, ejaculatory duct; gXI, ganglion of segment XI; gXV, ganglion of segment XV; gXIV, ganglion of segment XIV; o, ovisac; od, common oviduct; pr, prostate; ps, penis sheath; vc, vaginal caecum; vs, vaginal stalk.
FIGURE 6 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 6. Haemopis septagon Sawyer & Shelley, 1976. Mouth and distichodont teeth. A. Underside of head showing wide mouth with a prehensile upper lip (HS-6). B. Dislodged cuticle removed from the buccal cavity bearing three sets of distichodont teeth (HS-4), reflected light. (See also Fig. 9A). C, D. Increasingly higher magnifications of one of the jaws shown in B, transmitted light. Scale bars: A, 1.0 mm; B, 0.1 mm; C, 50 µm; D, 2.5 µm.
FIGURE 5 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 5. Haemopis septagon Sawyer & Shelley, 1976. Haemopis septagon (HS-4). Anterior pharynx and associated structures, cut along mid-ventral line. j, jaw at anterior extremity of coalesced pharyngeal ridges; k, crypt housing jaw; pr, pharyngeal ridge. Scale bar: 3.0 mm. Inset: enlarged plaque of 14 distichodont teeth at rim of jaw. Inset scale bar: 10 µm.
FIGURE 4 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 4. Haemopis septagon Sawyer & Shelley, 1976. Digestive tract of specimens from the Albemarle Peninsula, North Carolina. Comparison of the guts. A. Terrestrial individual (HS-4). B. "Aquatic" individual (HS-3). C. Juvenile individual (HS- 5). Of taxonomic significance, the pharynx in each case is prominently wide in relation to the crop, and extends posteriorly to ganglion XI (arrow), a unique feature among mid-Atlantic Hirudinidae. Furthermore, in each case the intestine consists of anterior and posterior regions, respectively (see text). Note the crop of the juvenile is segmentally compartmentalized and displays distinct anterior and posterior crop caeca per segment, a feature almost non-existent in adults (see also Fig. 8). acc XV, anterior crop caecum of segment XV; ai, anterior intestine; c, crop; gXIII, ganglion of segment XIII; gXIX, ganglion of segment XIX; p, pharynx; pcc XV, posterior crop caecum of segment XV; pcc XIX, posterior crop caecum of segment XIX; pi, posterior intestine; r, rectum.
FIGURE 2 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 2. Haemopis septagon Sawyer & Shelley, 1976. Clitellar region (HS-7). Ventral view. The clitellum extends all or part of 15 annuli, from Xb5(c10) to XIIIa2(b3), inclusively. Gonopores are separated by 7 annuli. The male opening at XIb5/b6 is indicated by a single arrow; the female opening at XIIIb1/b2 is indicated by two arrows. Scale bar: 2.0 mm.
FIGURE 3 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 3. Haemopis septagon Sawyer & Shelley, 1976. Taxonomically significant caudal annulation. As shown in this individual (HS-7) segment XXIV bears 5 annuli, with the result that this species has 16 complete (5-annulate) segments (IX–XXIV, inclusively). All other hirudinid species from the mid-Atlantic coastal plain have the more usual 15 complete segments, i.e. segment XXIV bears only 4 annuli. A. Dorsal. B. Ventral. Scale bar: 2.0 mm.
FIGURE 1 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 1. Haemopis septagon Sawyer & Shelley, 1976. Terrestrial and "aquatic" forms from the same (Cooper's corner) locality in Tyrrell County, Albemarle Peninsula, North Carolina. Upper, light-colored terrestrial individual (HS-6) found crawling on land 15 m from water. Lower, melanistic aquatic individual (HS-7) found in a nearby small stream. Both had been frozen prior to fixation in 5% formalin. Anterior to right. Scale bar: 10 mm.
FIGURE 9 in Observations on the terrestrial leech Haemopis septagon Sawyer & Shelley, 1976 (Annelida: Hirudinea) from the Outer Banks, North Carolina, USA, with a revision of the species
FIGURE 9. Haemopis septagon Sawyer & Shelley, 1976. A. Mouth of individual HS-7 showing labial sensory structures or "taste" receptors concentrated along dorsal lip. These apparently function to detect earthworms (see Simon & Barnes 1996). Note dislodged cuticle exuding from buccal cavity. B. Earthworm found in crop of another individual (HS-4). bc, buccal cuticle; s7, sensilla 7 of segment VI; t, "taste" receptor. Scale bars: A, 0.5 mm; B, 2.0 mm.
FIG. 3 in Notes on distinguishing the cocoons and the juveniles of Hirudo medicinalis and Haemopis sanguisuga (Hirudinea)
FIG. 3. Ventral view of the two forms of Haemopis sanguisuga: the more normal light form above, and the less common dark form below. Scales in millimetres.
FIG. 2 in Notes on distinguishing the cocoons and the juveniles of Hirudo medicinalis and Haemopis sanguisuga (Hirudinea)
FIG. 2. Top: typical new cocoons of Haemopis sanguisuga (above) and Hirudo medicinalis (below). Bottom: older, stained, cocoons of Hirudo medicinalis (left) and Haemopis sanguisuga (right). Note the diOEerence in the texture of the cocoon wall between the two species. Scales in millimetres.
FIG. 1 in Notes on distinguishing the cocoons and the juveniles of Hirudo medicinalis and Haemopis sanguisuga (Hirudinea)
FIG. 1. Length frequency distribution of cocoon (A) lengths and (B) widths of Hirudo medicinalis and Haemopis sanguisuga from sites in Scotland.
FIG. 4 in Notes on distinguishing the cocoons and the juveniles of Hirudo medicinalis and Haemopis sanguisuga (Hirudinea)
FIG. 4. Diagrammatic dorsal view of the middle segments of (A) Hirudo medicinalis and (B) Haemopis sanguisuga from sites in Scotland.
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