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46 results for “Stygobromus”
FIGURE 6 in Four new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from shallow groundwater habitats on the Coastal Plain and eastern margin of the Piedmont in Maryland and Virginia, USA
FIGURE 6. Stygobromus felleri, sp. n. Funks Pond Spring, Cecil County, Maryland.Paratype male (4.0–4.5 mm): (a, b) gnathopods 1, 2 (palmar margins enlarged). Gnathopods drawn to larger scale than antennae.
FIGURE 5 in A new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from two caves and a spring in western Maryland, USA with additional records of undescribed species from groundwater habitats in central Maryland
FIGURE 5. Stygobromus amicus, sp. n. John Friend Cave, Garrett County, Maryland. Paratype specimen (2.0–2.5 mm): (a) pleonal plates 1, 2, 3; (b) pleonite 1; (c) uropod 1; (d) uropod 2; (e) uropod 3; (f) telson. Uropods, pleonites and telson drawn to same scale; pleonal plates drawn to smaller scale.
FIGURE 3 in A new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from two caves and a spring in western Maryland, USA with additional records of undescribed species from groundwater habitats in central Maryland
FIGURE 3. Stygobromus amicus, sp. n. John Friend Cave, Garrett County, Maryland. Paratype specimen (2.0–2.5 mm): (a) gnathopod 1 (palmar region enlarged; (b) gnathopod 2 (palmar region enlarged). Gnathopods drawn to same scale.
FIGURE 2 in A new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from two caves and a spring in western Maryland, USA with additional records of undescribed species from groundwater habitats in central Maryland
FIGURE 2. Stygobromus amicus, sp. n. John Friend Cave, Garrett County, Maryland. Paratype specimen (2.0–2.5 mm): (a, b) antenna 1,antenna 2; (c) right mandible; (d) left mandible in part; (e) lower lip; (f) maxilla 1; (g) maxilla 2; (h) maxilliped. All mouthparts drawn to same scale; antennae drawn to smaller scale.
FIGURE 4 in A new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from two caves and a spring in western Maryland, USA with additional records of undescribed species from groundwater habitats in central Maryland
FIGURE 4. Stygobromus amicus, sp. n. John Friend Cave, Garrett County, Maryland. Paratype specimen (2.0–2.5 mm): (a) pereopod 3; (b) pereopod 4; (c) pereopod 5; (d) pereopd 6; (e) pereopod 7. Pereopods drawn to same scale.
FIGURE 5 in A new species of the subterranean genus Stygobromus (Amphipoda: Crangonyctidae) from a cave spring in northern Florida, USA
FIGURE 5. Stygobromus floridanus, sp. Skippers Spring, Washington County, Florida. Paratype specimen (13 mm): (a) pleonal plates; (b) uropod 1 and 2; (c) uropod 3; (d) telson. (pleonites not shown).
FIGURE 3 in A new species of the subterranean genus Stygobromus (Amphipoda: Crangonyctidae) from a cave spring in northern Florida, USA
FIGURE 3. Stygobromus floridanus, sp. n. Skippers Spring, Washington County, Florida. Paratype specimen (13 mm): (a) gnathopod 1; (b) gnathopod 2.
FIGURE 4 in A new species of the subterranean genus Stygobromus (Amphipoda: Crangonyctidae) from a cave spring in northern Florida, USA
FIGURE 4. Stygobromus floridanus, sp. n. Skippers Spring, Washington County, Florida. Paratype specimen (13 mm): (a) pereopod 3; (b) pereopod 4; (c) pereopod 5; (d) pereopod 6; (e) pereopod 7).
FIGURE 2 in A new species of the subterranean genus Stygobromus (Amphipoda: Crangonyctidae) from a cave spring in northern Florida, USA
FIGURE 2. Stygobromus floridanus, sp. n. Skippers Spring, Washington County, Florida. Paratype specimen (13 mm): (a, b) antenna 1, antenna 2; (c) right mandible; (d) left mandible in part (chewing structures enlarged); (e) lower lip); (f) maxilla 1; (g) maxilla 2; (h) maxilliped. All mouthparts except right mandible drawn to same scale. Antennae and right mandible drawn to smaller scale.
FIGURE 36. Stygobromus anastasiae n in Two new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from Siberia, with new data on Stygobromus pusillus (Martynov) and remarks on morphology and biogeographic relationships
FIGURE 36. Stygobromus anastasiae n. sp., female (3.0 mm) from left side (antennae 1 damaged), SEM.
FIGURE 8. Stygobromus mikhaili n in Two new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from Siberia, with new data on Stygobromus pusillus (Martynov) and remarks on morphology and biogeographic relationships
FIGURE 8. Stygobromus mikhaili n. sp., male (2.6 mm) from left side (dorsal surface crumpled), SEM.
FIGURE 1 in A new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from two caves and a spring in western Maryland, USA with additional records of undescribed species from groundwater habitats in central Maryland
FIGURE 1. Distribution of Stygobromus amicus in western Maryland, USA.
FIGURE 1 in A new species of the subterranean genus Stygobromus (Amphipoda: Crangonyctidae) from a cave spring in northern Florida, USA
FIGURE 1. Distribution of Stygobromus floridanus in the "panhandle" of northwestern Florida, USA.
Figure 9 from: Niemiller ML, Cannizzaro AG, Sawicki TR, Culver DC (2024) A new species of Stygobromus Cope, 1872 (Amphipoda, Crangonyctidae) from a hypotelminorheic seepage spring in Washington, D.C., USA. Subterranean Biology 48: 117-146. https://doi.org/10.3897/subtbiol.48.112984
Figure 9 Distribution of Stygobromus anacostensis sp. nov. and other S. tenuis group species in the Washington D.C. area, USA
Figure 8 from: Niemiller ML, Cannizzaro AG, Sawicki TR, Culver DC (2024) A new species of Stygobromus Cope, 1872 (Amphipoda, Crangonyctidae) from a hypotelminorheic seepage spring in Washington, D.C., USA. Subterranean Biology 48: 117-146. https://doi.org/10.3897/subtbiol.48.112984
Figure 8 Stygobromus anacostensis sp. nov., Allotype female, 5.3 mm (USNM 1606903): A coxa and basis of pereopod 7 showing placement of bifurcate sternal gill B uropod 1 C uropod 2 D uropod 3 E telson. Scale bars: 0.5 mm (A–C); 0.25 mm (D, E).
Figure 6 from: Niemiller ML, Cannizzaro AG, Sawicki TR, Culver DC (2024) A new species of Stygobromus Cope, 1872 (Amphipoda, Crangonyctidae) from a hypotelminorheic seepage spring in Washington, D.C., USA. Subterranean Biology 48: 117-146. https://doi.org/10.3897/subtbiol.48.112984
Figure 6 Stygobromus anacostensis sp. nov., Holotype male, 5.9 mm (USNM 1606902): A epimera 1–3 B pleopod 1 (coupling spines and clothes pin seta enlarged) C uropod 1 (posteromedial protuberance enlarged) D uropod 2 E uropod 3 F telson. Scale bars: 0.25 mm.
Figure 4 from: Niemiller ML, Cannizzaro AG, Sawicki TR, Culver DC (2024) A new species of Stygobromus Cope, 1872 (Amphipoda, Crangonyctidae) from a hypotelminorheic seepage spring in Washington, D.C., USA. Subterranean Biology 48: 117-146. https://doi.org/10.3897/subtbiol.48.112984
Figure 4 Stygobromus anacostensis sp. nov., Holotype male, 5.9 mm (USNM 1606902): A gnathopod 1 (palm and dactyl enlarged) B gnathopod 2 (rastellate seta, palm and dactyl enlarged). Scale bar: 0.5 mm.
Figure 7 from: Niemiller ML, Cannizzaro AG, Sawicki TR, Culver DC (2024) A new species of Stygobromus Cope, 1872 (Amphipoda, Crangonyctidae) from a hypotelminorheic seepage spring in Washington, D.C., USA. Subterranean Biology 48: 117-146. https://doi.org/10.3897/subtbiol.48.112984
Figure 7 Stygobromus anacostensis sp. nov., Allotype female, 5.3 mm (USNM 1606903): A antenna 2 B gnathopod 1 (palm and dactyl enlarged) C gnathopod 2 (rastellate seta, palm and dactyl enlarged). Scale bars: 0.25 mm (A); 0.5 mm (B, C).
Figure 5 from: Niemiller ML, Cannizzaro AG, Sawicki TR, Culver DC (2024) A new species of Stygobromus Cope, 1872 (Amphipoda, Crangonyctidae) from a hypotelminorheic seepage spring in Washington, D.C., USA. Subterranean Biology 48: 117-146. https://doi.org/10.3897/subtbiol.48.112984
Figure 5 Stygobromus anacostensis sp. nov., Holotype male, 5.9 mm (USNM 1606902): A pereopod 3 B pereopod 4 C pereopod 5 D pereopod 6 E pereopod 7 F bifurcate sternal gill located on somites 6 and 7. Scale bar: 0.5 mm.
Figure 3 from: Niemiller ML, Cannizzaro AG, Sawicki TR, Culver DC (2024) A new species of Stygobromus Cope, 1872 (Amphipoda, Crangonyctidae) from a hypotelminorheic seepage spring in Washington, D.C., USA. Subterranean Biology 48: 117-146. https://doi.org/10.3897/subtbiol.48.112984
Figure 3 Stygobromus anacostensis sp. nov., Paratype male, 5.7 mm (USNM 1606904): A upper lip D maxilla 2. Holotype male, 5.9 mm (USNM 1606902): B lower lip C maxilla 1 E maxilliped (distal margin of inner plate enlarged). Scale bars: 0.25 mm.
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