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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 5.Shells of Group I: Discartemon discus-group. A, B Discartemon discamaximus sp. n. A holotype CUMZ 6245 with apertural dentition, and B paratype CUMZ 6005 C, D Discartemon circulus sp. n. C holotype CUMZ 6246 with apertural dentition, and D paratype CUMZ 3665 E, F Discartemon deprima sp. n. E holotype CUMZ 6247 with apertural dentition, and F paratype CUMZ 3573 G, H Discartemon expandus sp. n. G holotype CUMZ 6248 with apertural dentition, and H paratype CUMZ 3664.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 23.Approximate locations of the type locality of Discartemon species. (1) Discartemon discus, (2) Discartemon planus, (3) Discartemon sykesi, (4) Discartemon nummus, (5) Discartemon khaosokensis, (6) Discartemon discadentus sp. n., (7) Discartemon discamaximus sp. n., (8) Discartemon circulus sp. n., (9) Discartemon deprima sp. n., (10) Discartemon expandus sp. n., (11) Discartemon plussensis, (12) Discartemon hypocrites, (13) Discartemon leptoglyphus, (14) Discartemon platymorphus, (15) Discartemon afthonodontia sp. n., (16) Discartemon epipedis sp. n., (17) Discartemon flavacandida sp. n., (18) Discartemon lemyrei, (19) Discartemon roebeleni, (20) Discartemon collingei, (21) Discartemon stenostomus, (22) Discartemon sangkarensis, (23) Discartemon vandermeermohri, (24) Discartemon kotanensis sp. n., (25) Discartemon megalostraka sp. n., (26) Discartemon triancus sp. n., and (27) Discartemon conicus sp. n.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 5.Shells of Group I: Discartemon discus-group. A, B Discartemon discamaximus sp. n. A holotype CUMZ 6245 with apertural dentition, and B paratype CUMZ 6005 C, D Discartemon circulus sp. n. C holotype CUMZ 6246 with apertural dentition, and D paratype CUMZ 3665 E, F Discartemon deprima sp. n. E holotype CUMZ 6247 with apertural dentition, and F paratype CUMZ 3573 G, H Discartemon expandus sp. n. G holotype CUMZ 6248 with apertural dentition, and H paratype CUMZ 3664.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 23.Approximate locations of the type locality of Discartemon species. (1) Discartemon discus, (2) Discartemon planus, (3) Discartemon sykesi, (4) Discartemon nummus, (5) Discartemon khaosokensis, (6) Discartemon discadentus sp. n., (7) Discartemon discamaximus sp. n., (8) Discartemon circulus sp. n., (9) Discartemon deprima sp. n., (10) Discartemon expandus sp. n., (11) Discartemon plussensis, (12) Discartemon hypocrites, (13) Discartemon leptoglyphus, (14) Discartemon platymorphus, (15) Discartemon afthonodontia sp. n., (16) Discartemon epipedis sp. n., (17) Discartemon flavacandida sp. n., (18) Discartemon lemyrei, (19) Discartemon roebeleni, (20) Discartemon collingei, (21) Discartemon stenostomus, (22) Discartemon sangkarensis, (23) Discartemon vandermeermohri, (24) Discartemon kotanensis sp. n., (25) Discartemon megalostraka sp. n., (26) Discartemon triancus sp. n., and (27) Discartemon conicus sp. n.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 5.Shells of Group I: Discartemon discus-group. A, B Discartemon discamaximus sp. n. A holotype CUMZ 6245 with apertural dentition, and B paratype CUMZ 6005 C, D Discartemon circulus sp. n. C holotype CUMZ 6246 with apertural dentition, and D paratype CUMZ 3665 E, F Discartemon deprima sp. n. E holotype CUMZ 6247 with apertural dentition, and F paratype CUMZ 3573 G, H Discartemon expandus sp. n. G holotype CUMZ 6248 with apertural dentition, and H paratype CUMZ 3664.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 23.Approximate locations of the type locality of Discartemon species. (1) Discartemon discus, (2) Discartemon planus, (3) Discartemon sykesi, (4) Discartemon nummus, (5) Discartemon khaosokensis, (6) Discartemon discadentus sp. n., (7) Discartemon discamaximus sp. n., (8) Discartemon circulus sp. n., (9) Discartemon deprima sp. n., (10) Discartemon expandus sp. n., (11) Discartemon plussensis, (12) Discartemon hypocrites, (13) Discartemon leptoglyphus, (14) Discartemon platymorphus, (15) Discartemon afthonodontia sp. n., (16) Discartemon epipedis sp. n., (17) Discartemon flavacandida sp. n., (18) Discartemon lemyrei, (19) Discartemon roebeleni, (20) Discartemon collingei, (21) Discartemon stenostomus, (22) Discartemon sangkarensis, (23) Discartemon vandermeermohri, (24) Discartemon kotanensis sp. n., (25) Discartemon megalostraka sp. n., (26) Discartemon triancus sp. n., and (27) Discartemon conicus sp. n.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 6.Shells of Group II: Discartemon plussensis-group. A, B Discartemon plussensis A specimen NHMUK 1939.4.13.22, from Perak, Malaysia, and B topotype CUMZ 6009 with apertural dentition C, D Discartemon hypocrites C holotype ZMA 3.34.017, and D topotype CUMZ 6011 with apertural dentition E, F Discartemon leptoglyphus E holotype ZMA 3.54.019, and F specimen CUMZ 6007, from Ipoh, Perak, Malaysia with apertural dentition G, H Discartemon platymorphus G holotype ZMA 3.54.022, and H paratype ZMA 3.54.023.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 23.Approximate locations of the type locality of Discartemon species. (1) Discartemon discus, (2) Discartemon planus, (3) Discartemon sykesi, (4) Discartemon nummus, (5) Discartemon khaosokensis, (6) Discartemon discadentus sp. n., (7) Discartemon discamaximus sp. n., (8) Discartemon circulus sp. n., (9) Discartemon deprima sp. n., (10) Discartemon expandus sp. n., (11) Discartemon plussensis, (12) Discartemon hypocrites, (13) Discartemon leptoglyphus, (14) Discartemon platymorphus, (15) Discartemon afthonodontia sp. n., (16) Discartemon epipedis sp. n., (17) Discartemon flavacandida sp. n., (18) Discartemon lemyrei, (19) Discartemon roebeleni, (20) Discartemon collingei, (21) Discartemon stenostomus, (22) Discartemon sangkarensis, (23) Discartemon vandermeermohri, (24) Discartemon kotanensis sp. n., (25) Discartemon megalostraka sp. n., (26) Discartemon triancus sp. n., and (27) Discartemon conicus sp. n.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 3.Living snails. A Discartemon epipedis sp. n. paratype CUMZ 6215 (shell width about 9 mm) B Discartemon flavacandida sp. n. paratype CUMZ 6216 (shell width about 12 mm)C Discartemon roebeleni topotype CUMZ 6217 (shell width about 9 mm) D Discartemon kotanensis sp. n. paratype CUMZ 6230 (shell width about 9 mm) E Discartemon megalostraka sp. n. CUMZ 6233, from Phangnga (shell width about 12 mm), and F Discartemon triancus sp. n. paratype CUMZ 6236 (shell width about 7 mm).
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 2.Living snails. A Discartemon nummus CUMZ 6208, from Patthalung (shell width about 6 mm) B Discartemon discadentus sp. n. paratype CUMZ 6209 (shell width about 12 mm) C Discartemon leptoglyphus CUMZ 6007, from Ipoh, Perak, Malaysia (shell width about 6 mm) D Discartemon hypocrites topotype CUMZ 6199 (shell width about 6 mm) E, F Discartemon afthonodontia sp. n. E paratype CUMZ 6210 (shell width about 9 mm), and F specimen CUMZ 6214, from Tam Khao Phlu, Chumphon (shell width about 8 mm).
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 7.Shells of Group II: Discartemon plussensis-group. A, B Discartemon afthonodontia sp. n. A holotype CUMZ 6249 with apertural dentition, and B specimen CUMZ 3581, from Tam Khao Phlu, Chumphon C, D Discartemon epipedis sp. n. C holotype CUMZ 6250 with apertural dentition, and D paratype CUMZ 6020 E, F Discartemon flavacandida sp. n. E holotype CUMZ 6251 with apertural dentition, and F paratype CUMZ 3574.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 13.Genitalia. A, B Discartemon leptoglyphus CUMZ 6007, from Ipoh, Perak, Malaysia A reproductive system, and B insertion of vas deferens into penial sheath C–F Discartemon afthonodontia sp. n. paratype CUMZ 6210 C reproductive system D insertion of vas deferens into penial sheath E inflation of penis, and F details of hermaphroditic duct and seminal vesicle.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 19.Internal sculpture of genitalia. A–E Discartemon afthonodontia sp. n. paratype CUMZ 6210 A details of atrial pore on the atrium surface B high magnification shows arrangement of penial hooks C top view of penial hook D lateral view of penial hook, and E details of vaginal surface F–I Discartemon epipedis sp. n. paratype CUMZ 6215 F details of the atrium surface G scattered arrangement of penial hooks with high magnification, and (inset) shows in low magnification H top view of penial hook, and I details of vaginal surface J–N Discartemon flavacandida sp. n. paratype CUMZ 6216 J details of atrial pore on the atrium surface K high magnification shows arrangement of penial hooks with top view of penial hook in white square L top view of penial hook (from white square in K) M lateral view of penial hook, and N details of vaginal surface.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 22.Radula morphology of A Discartemon discus CUMZ 6257, from Da Nang, Vietnam B Discartemon nummus CUMZ 6208, from Patthalung C Discartemon hypocrites, topotype CUMZ 6199 D Discartemon afthonodontia sp. n., paratype CUMZ 6210 E Discartemon roebeleni, topotype CUMZ 6217 F Discartemon kotanensis sp. n. paratype CUMZ 6230 G Discartemon megalostraka sp. n. paratype CUMZ 6233 H Discartemon triancus sp. n. paratype CUMZ 6236.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 23.Approximate locations of the type locality of Discartemon species. (1) Discartemon discus, (2) Discartemon planus, (3) Discartemon sykesi, (4) Discartemon nummus, (5) Discartemon khaosokensis, (6) Discartemon discadentus sp. n., (7) Discartemon discamaximus sp. n., (8) Discartemon circulus sp. n., (9) Discartemon deprima sp. n., (10) Discartemon expandus sp. n., (11) Discartemon plussensis, (12) Discartemon hypocrites, (13) Discartemon leptoglyphus, (14) Discartemon platymorphus, (15) Discartemon afthonodontia sp. n., (16) Discartemon epipedis sp. n., (17) Discartemon flavacandida sp. n., (18) Discartemon lemyrei, (19) Discartemon roebeleni, (20) Discartemon collingei, (21) Discartemon stenostomus, (22) Discartemon sangkarensis, (23) Discartemon vandermeermohri, (24) Discartemon kotanensis sp. n., (25) Discartemon megalostraka sp. n., (26) Discartemon triancus sp. n., and (27) Discartemon conicus sp. n.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 3.Living snails. A Discartemon epipedis sp. n. paratype CUMZ 6215 (shell width about 9 mm) B Discartemon flavacandida sp. n. paratype CUMZ 6216 (shell width about 12 mm)C Discartemon roebeleni topotype CUMZ 6217 (shell width about 9 mm) D Discartemon kotanensis sp. n. paratype CUMZ 6230 (shell width about 9 mm) E Discartemon megalostraka sp. n. CUMZ 6233, from Phangnga (shell width about 12 mm), and F Discartemon triancus sp. n. paratype CUMZ 6236 (shell width about 7 mm).
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 7.Shells of Group II: Discartemon plussensis-group. A, B Discartemon afthonodontia sp. n. A holotype CUMZ 6249 with apertural dentition, and B specimen CUMZ 3581, from Tam Khao Phlu, Chumphon C, D Discartemon epipedis sp. n. C holotype CUMZ 6250 with apertural dentition, and D paratype CUMZ 6020 E, F Discartemon flavacandida sp. n. E holotype CUMZ 6251 with apertural dentition, and F paratype CUMZ 3574.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 14.Genitalia. A, B Discartemon epipedis sp. n. paratype CUMZ 6215 A reproductive system, and B insertion of vas deferens into penis sheath C, D Discartemon flavacandida sp. n., paratype CUMZ 6216 C reproductive system, and D insertion of vas deferens into penis sheath.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 19.Internal sculpture of genitalia. A–E Discartemon afthonodontia sp. n. paratype CUMZ 6210 A details of atrial pore on the atrium surface B high magnification shows arrangement of penial hooks C top view of penial hook D lateral view of penial hook, and E details of vaginal surface F–I Discartemon epipedis sp. n. paratype CUMZ 6215 F details of the atrium surface G scattered arrangement of penial hooks with high magnification, and (inset) shows in low magnification H top view of penial hook, and I details of vaginal surface J–N Discartemon flavacandida sp. n. paratype CUMZ 6216 J details of atrial pore on the atrium surface K high magnification shows arrangement of penial hooks with top view of penial hook in white square L top view of penial hook (from white square in K) M lateral view of penial hook, and N details of vaginal surface.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 23.Approximate locations of the type locality of Discartemon species. (1) Discartemon discus, (2) Discartemon planus, (3) Discartemon sykesi, (4) Discartemon nummus, (5) Discartemon khaosokensis, (6) Discartemon discadentus sp. n., (7) Discartemon discamaximus sp. n., (8) Discartemon circulus sp. n., (9) Discartemon deprima sp. n., (10) Discartemon expandus sp. n., (11) Discartemon plussensis, (12) Discartemon hypocrites, (13) Discartemon leptoglyphus, (14) Discartemon platymorphus, (15) Discartemon afthonodontia sp. n., (16) Discartemon epipedis sp. n., (17) Discartemon flavacandida sp. n., (18) Discartemon lemyrei, (19) Discartemon roebeleni, (20) Discartemon collingei, (21) Discartemon stenostomus, (22) Discartemon sangkarensis, (23) Discartemon vandermeermohri, (24) Discartemon kotanensis sp. n., (25) Discartemon megalostraka sp. n., (26) Discartemon triancus sp. n., and (27) Discartemon conicus sp. n.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 17.Internal sculpture of genitalia. A–E Discartemon nummus CUMZ 6208, from Patthalung A details of atrium surface B low magnification shows arrangement of penial hooks C high magnification of penial hooks D top view of penial hooks, white arrow indicate tip of hook, and E arrangement of vaginal folds F–I Discartemon discadentus sp. n., paratype CUMZ 6209 F details of atrium surface G high magnification of penial hooks with (inset) shows in low magnification H top view of penial hook, and I arrangement of reticulated vaginal folds.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 3.Living snails. A Discartemon epipedis sp. n. paratype CUMZ 6215 (shell width about 9 mm) B Discartemon flavacandida sp. n. paratype CUMZ 6216 (shell width about 12 mm)C Discartemon roebeleni topotype CUMZ 6217 (shell width about 9 mm) D Discartemon kotanensis sp. n. paratype CUMZ 6230 (shell width about 9 mm) E Discartemon megalostraka sp. n. CUMZ 6233, from Phangnga (shell width about 12 mm), and F Discartemon triancus sp. n. paratype CUMZ 6236 (shell width about 7 mm).
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 7.Shells of Group II: Discartemon plussensis-group. A, B Discartemon afthonodontia sp. n. A holotype CUMZ 6249 with apertural dentition, and B specimen CUMZ 3581, from Tam Khao Phlu, Chumphon C, D Discartemon epipedis sp. n. C holotype CUMZ 6250 with apertural dentition, and D paratype CUMZ 6020 E, F Discartemon flavacandida sp. n. E holotype CUMZ 6251 with apertural dentition, and F paratype CUMZ 3574.
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Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson, Somsak Panha
Zookeys
Figure 14.Genitalia. A, B Discartemon epipedis sp. n. paratype CUMZ 6215 A reproductive system, and B insertion of vas deferens into penis sheath C, D Discartemon flavacandida sp. n., paratype CUMZ 6216 C reproductive system, and D insertion of vas deferens into penis sheath.