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63 results for “Cochliopidae”
Fig. 2 in Temporal variations of larval digenean assemblages parasitizing Heleobia parchappii (Mollusca: Cochliopidae) in two shallow lakes from the Buenos Aires province, Argentina
Fig. 2. Seasonal variation in the Overall prevalence (mean ± S.D) of larval digeneans parasitizing Heleobia parchappii (D'Orbigny, 1835) in Los Padres and La Brava lakes, Buenos Aires province, Argentina.
Fig. 3 in Temporal variations of larval digenean assemblages parasitizing Heleobia parchappii (Mollusca: Cochliopidae) in two shallow lakes from the Buenos Aires province, Argentina
Fig. 3. Seasonal variation in Species richness (mean ± S.D) of larval digeneans parasitizing Heleobia parchappii (D'Orbigny, 1835) in Los Padres and La Brava lakes, Buenos Aires province, Argentina.
Figures 1-17 in A new species of the micro snail genus Heleobia (Caenogastropoda, Cochliopidae) from Bahia, Brazil
Figures 1-17. Heleobia brucutu sp. nov., hard parts: (1-12) paratypes MZSP 151289: (1-3) #1, frontal, dorsal and right views (L 2.6 mm); (4-6) #2, frontal, dorsal and right views (L 2.5 mm); (7-8) operculum, outer and inner views (L 0.7 mm); (9) #3, frontal view (L 2 mm); (10-12) #6, frontal, right view (L 2.7 mm) and detail of egg capsule with young specimens inside; (13-15) holotype, SEM, frontal, right-slightly apical, right-slightly frontal views (L 2.7 mm); (16) paratype with 3 egg capsules attached, with embryo inside, frontal view (L 2.1 mm); (17) same, detail of apical region.
Figures 19-26 in A new species of the micro snail genus Heleobia (Caenogastropoda, Cochliopidae) from Bahia, Brazil
Figures 19-26. Heleobia brucutu sp. nov., anatomical drawings: (19) head-foot, male, right-slightly dorsal view; (20) same, dorsal view; (21) foregut, right view; (22) buccal mass, dissected, radula removed, odontophore deflected downwards, dorsal view, buccal hoof expanded upwards, ventral view; (23) pallial cavity hoof, ventral view, and visceral mass partially uncoiled, most structures as in situ, digestive gland portion ventral so stomach (st) removed, anterior region of visceral vas deferens (vd) sectioned; (24) head, male, focusing penis; (25) nerve ring, dorsal view; (26) pallial oviduct, ventral view, topology of some adjacent structures also shown. Scale bars = 0.25 mm.
Two new phreatic snails (Mollusca: Caenogastropoda: Cochliopidae) from the Edwards and Edwards-Trinity aquifers, Texas
<p>The Edwards and Edwards-Trinity Aquifers of Texas have diverse stygofauna, including fifteen species of snails found in phreatic and hyporheic habitats. These species have the hallmarks of adaptation to subterranean environments including extremely small body size and the loss of pigmentation and eyes. Here we use an integrative taxonomic approach, using shell, radula, and anatomical features as well as mitochondrial and nuclear DNA data, to circumscribe a new genus and two new cavesnail species from Central Texas. <em>Vitropyrgus</em> <em>lillianae</em> gen. et sp. nov. is described from Comal Springs (Comal County) and Fessenden Springs (Kerr County) and distinguished by a glassy, highly sculptured shell and distinctively simple, unornamented penial morphology. We also describe<em> Phreatodrobia bulla </em>sp. nov. from Hidden Springs (Bell County), and several other springs in Bell & Williamson Counties, Texas. This species has a smooth, unsculptured teleoconch, a reflected and flared lip, and deeply concave operculum. </p>
Fig. 1 in Temporal variations of larval digenean assemblages parasitizing Heleobia parchappii (Mollusca: Cochliopidae) in two shallow lakes from the Buenos Aires province, Argentina
Fig. 1. Sampling sites in the Buenos Aires province, Argentina.
Two new phreatic snails (Mollusca: Caenogastropoda: Cochliopidae) from the Edwards and Edwards-Trinity aquifers, Texas
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FIGURE 1 in An unusually sculptured new species of Phreatodrobia Hershler & Longley (Mollusca: Caenogastropoda: Cochliopidae) from central Texas
FIGURE 1. Map of Texas with collection localities for Phreatodrobia spica n. sp. and additional Phreatodrobia spp. presented in phylogeny. Karstic regions highlighted in gray are drawn from US Karst Map dataset (Weary & Doctor 2014). Counties are also illustrated. Inset map of North America with the study area indicated, created by Benjamin Hutchins.
FIGURE 3 in An unusually sculptured new species of Phreatodrobia Hershler & Longley (Mollusca: Caenogastropoda: Cochliopidae) from central Texas
FIGURE 3. Shells of Phreatodrobia spica n. sp. A–C. holotype, Comal Springs, ANSP 1446-A480669, height=1.32 mm, width=0.79 mm. D–E. Comal Springs, ANSP 1449-A480668, height=1.26 mm. F. Tahuaya Springs, ANSP 1423-A480671, height=1.43 mm. G–H. Finegan Springs, height = 1.35 mm. I–J. Comal Springs individual, operculum 0.72 mm top to bottom, operculum exterior. J. operculum ventral. K–L. Comal Springs, bodies ~1.5 mm long. K. Body ventral. L. Body dorsal. A–C are in the same scale. D–H are in the same scale.
Figure 18 in A new species of the micro snail genus Heleobia (Caenogastropoda, Cochliopidae) from Bahia, Brazil
Figure 18. Heleobia brucutu sp. nov.: radula drawings. Scale bar = 100 µm.
FIGURE 2 in A new freshwater snail (Caenogastropoda: Cochliopidae) from the Atacama Desert, northern Chile
FIGURE 2. Aguada de Chorrillos, Atacama Desert, northern Chile, the type locality of Heleobia deserticola sp. nov. A. Panoramic view of the system, desert, beach and Pacific Ocean. B. Spring where the snails live.
FIGURE 1. A–Q in A new freshwater snail (Caenogastropoda: Cochliopidae) from the Atacama Desert, northern Chile
FIGURE 1. A–Q. Heleobia deserticola sp. nov. A. Shell of the holotype (MZUC 43067). B–K. Shells of the paratypes (MZUC 43068–43077). L. Operculum (1.70 mm total length). M–O. Penes of three individuals (0.64, 0.70 and 0.90 mm total length, respectively). Operculum and penes were photographed from both sides. P, Q. Egg capsules of the new species. P. Egg capsules attached to the adult shells. Q. Pre–hatching capsule isolated with a shelled juvenile inside. R. Shell of an adult snail from Carrera Pinto (SL 3.51 mm, SW 1.55 mm, AL 1.35 mm, AW 0.97 mm. S. Penis of this individual (0.75 mm total length).
FIGURE 2. A–U in A new species of Heleobia (Caenogastropoda: Cochliopidae) from the Chilean Altiplano
FIGURE 2. A–U. Heleobia carcotensis sp. nov. A. Holotype (MZUC–UCCC 43802). B–F. Paratypes shells (MZUC–UCCC 43803– 43807). G. Apical view of the shell. H–I. Operculum (inner, outer sides). Scale bar: 500 µm. J–O. Radula, J, section of radular ribbon (scale bar: 40 µm), K, central radular teeth, L, outer marginal tooth, M, inner marginal tooth, N–O, lateral teeth showing the cusps on outer sides (scale bar: 10 µm). P–R. Head-foot of three individuals (P: MZUC–UCCC 43808). S–U. Penis of three individuals (ventral and dorsal view) (S: MZUC–UCCC 43809). Labels: h, head; s, snout; t, tentacles. Scale bar: 1 mm.
FIGURE 1. A in A new species of Heleobia (Caenogastropoda: Cochliopidae) from the Chilean Altiplano
FIGURE 1. A. Bayesian tree based on COI sequences. Posterior probability values for node support are given when> 0.94. B–C. Spring 1, Carcote saltpan, Chilean Altiplano. B. North-South panoramic view. C. South-North panoramic view.
FIGURE 11 in New species and records of springsnails (Caenogastropoda: Cochliopidae: Tryonia) from the Chihuahuan Desert (Mexico and United States), an imperiled biodiversity hotspot
FIGURE 11. Tryonia julimesensis sp. nov. and Tryonia allendae sp. nov. A. Holotype, T. julimesensis, USNM 874130. B–C. Male shells, T. julimesensis, USNM 1153671. D. Holotype, T. allendae, USNM 892115. E. Shell, T. allendae, USNM 1153667. F–G. Operculum (outer, inner sides), T. julimesensis, USNM 1153671. H–I. Operculum (outer, inner sides), T. allendae, USNM 1153671. J. Portion of radular ribbon, T. julimesensis, USNM 1153671. K. Central radular teeth, T. julimesensis, USNM 1153671. L. Lateral tooth, T. julimesensis, USNM 1153671. M. Portion of radular ribbon, T. allendae, USNM 1153667. N. Central radular teeth, T. allendae, USNM 1153667. R. Lateral teeth, T. allendae, USNM 1153667. Scale bars A–E = 1.0 mm; F–I = 250 µm; J, K–L, N–O = 10 µm; M = 25 µm.
FIGURE 5. Penes. A. T in New species and records of springsnails (Caenogastropoda: Cochliopidae: Tryonia) from the Chihuahuan Desert (Mexico and United States), an imperiled biodiversity hotspot
FIGURE 5. Penes. A. T. peregrina sp. nov., USNM 1153677. B. T. zaragozae sp. nov., USNM 1153679. C. T. ovata sp. nov., USNM 1153676. D. T. angosturae sp. nov., USNM 874174. E. T. molinae sp. nov., USNM 1153674. F. T. contrerasi sp. nov., USNM 1153670. G. T. taylori sp. nov., USNM 874047. H. T. taylori sp. nov., USNM 873252. I. T. metcalfi sp. nov., USNM 1153672. J. T. chuviscarae sp. nov., USNM 1001756. K. T. minckleyi sp. nov., USNM 1153673. L. T. julimesensis sp. nov., USNM 1153671. M. T. allendae sp. nov., USNM 1153667. N. T. oasiensis sp. nov., USNM 1153675. O. T. seemani, USNM 874125. P. T. seemani, USNM 874123. Scale bars = 250 µm. Db = distal bulb, Pa = papilla, Pd = penial duct, St = stylet.
FIGURE 12 in New species and records of springsnails (Caenogastropoda: Cochliopidae: Tryonia) from the Chihuahuan Desert (Mexico and United States), an imperiled biodiversity hotspot
FIGURE 12. Tryonia oasiensis sp. nov. and Tryonia seemani (Frauenfeld). A. Holotype, T. oasiensis, USNM 1123759. B. Male shell, T. oasiensis, USNM 1153675. C. Shell, T. seemani, USNM 874123. D–E. Shells, T. seemani, USNM 874125 (D is a male). F–G. Operculum (outer, inner sides), T. oasiensis, USNM 1153675. H–I. Operculum (outer, inner sides), T. seemani, USNM 874123. J. Portion of radular ribbon, T. oasiensis, USNM 1153675. K. Central radular teeth, T. oasiensis, USNM 1153675. L. Lateral teeth, T. oasiensis, USNM 1153675. M. Portion of radular ribbon, T. seemani, USNM 874123. N. Central radular teeth, T. seemani, USNM 874123. O. Lateral tooth, T. seemani, USNM 874123. Scale bars A–E = 1.0 mm, F–I = 250 µm, J = 25 µm. K–O = 10 µm.
FIGURE 2 in New species and records of springsnails (Caenogastropoda: Cochliopidae: Tryonia) from the Chihuahuan Desert (Mexico and United States), an imperiled biodiversity hotspot
FIGURE 2. Bayesian tree based on the COI dataset. Posterior probabilities are provided when>95%. The names of the species treated herein are in bold face. Terminals and specimen codes are labeled as in Table 1. The two well supported clades composed of new species described herein are labeled A–B.
FIGURE 8 in New species and records of springsnails (Caenogastropoda: Cochliopidae: Tryonia) from the Chihuahuan Desert (Mexico and United States), an imperiled biodiversity hotspot
FIGURE 8. Tryonia molinae sp. nov. and Tryonia contrerasi sp. nov. A. Holotype, T. molinae, USNM 1139278. B–C. Shells, T. molinae, USNM 1153674 (C is a male). D. Holotype, T. contrerasi, USNM 874121. E–F. Shells, T. contrerasi, USNM 874128 (F is a male). G–H. Operculum (outer, inner sides), T. molinae, USNM 1153674. I–J. Operculum (outer, inner sides), T. contrerasi, USNM 1153670. K. Portion of radular ribbon, T. molinae, USNM 1153674. L. Central radular teeth, T. molinae, USNM 1153670. M. Lateral and inner marginal teeth, T. molinae, USNM 1153670. N. Portion of radular ribbon, T. contrerasi, USNM 1153670. Q. Central radular teeth, T. contrerasi, USNM 1153670. R. Lateral tooth, T. contrerasi, USNM 1153670. Scale bars A–F = 1.0 mm; G–J = 250 µm; K, N = 25 µm, L–M, O–P = 10 µm.
FIGURE 10 in New species and records of springsnails (Caenogastropoda: Cochliopidae: Tryonia) from the Chihuahuan Desert (Mexico and United States), an imperiled biodiversity hotspot
FIGURE 10. Tryonia chuviscarae sp. nov. and Tryonia minckleyi sp. nov. A. Holotype, T. chuviscarae, USNM 873270. B. Male shell, T. chuviscarae, USNM 1153669. C. Male shell, T. chuviscarae, USNM 1001750. D. Holotype, T. minckleyi, USNM 1001751. E. Male shell, T. minckleyi, USNM 1153673. F–G. Operculum (outer, inner sides), T. chuviscarae, USNM 1001750. H–I. Operculum (outer, inner sides), T. minckleyi, USNM 1153673. J. Portion of radular ribbon, T. chuviscarae, USNM 001750. K. Central radular teeth, T. chuviscarae, USNM 1001750. L. Lateral and inner marginal teeth, T. chuviscarae, USNM 1001750. M. Portion of radular ribbon, T. minckleyi, USNM 1153673. N. Central radular teeth, T. minckleyi, USNM 1153673. O. Lateral tooth, T. minckleyi, USNM 1153673. Scale bars A–E = 1.0 mm, F–I = 100 µm, J–O = 10 µm.
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