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Figures 58–62. Costa Rican Dromaeolus species. 58 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 58–62. Costa Rican Dromaeolus species. 58) Dromaeolus brunneus sp. nov., female allotype, dorsal habitus. 59) Dromaeolus herediensis sp. nov., dorsal habitus. 60) Dromaeolus herediensis sp. nov., ventral habitus. 61) Dromaeolus holdridgei sp. nov., dorsal habitus. 62) Dromaeolus holdridgei sp. nov., ventral habitus. (Scale: 59–62 = 1.0 mm; 58 = 5.0 mm)

Figures 40–43. Costa Rican macraulacine eucnemids. 40 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 40–43. Costa Rican macraulacine eucnemids. 40) Absensiugum brunneum sp. nov., female allotype, dorsal habitus. 41) Dromaeolus ambiguus, dorsal habitus. 42) Dromaeolus cinerescens, dorsal habitus. 43) Dromaeolus dilutipes, dorsal habitus. (Scale: 40–43 = 1.0 mm)

Figures 23–26 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 23–26. Lacus pectinatus sp. nov. 23) Male holotype, dorsal habitus. 24) Male holotype, ventral habitus. 25) Male aedeagus, dorsal view. 26) Female allotype, dorsal view. (Scale: 23–25 = 1.0 mm; 26 = 5.0 mm)

Figures 54–57. Costa Rican Dromaeolus species. 54 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 54–57. Costa Rican Dromaeolus species. 54) Dromaeolus americanus sp. nov., dorsal habitus. 55) Dromaeolus americanus sp. nov., ventral habitus. 56) Dromaeolus brunneus sp. nov., male holotype, dorsal habitus. 57) Dromaeolus brunneus sp. nov., male holotype, ventral habitus. (Scale: 54–57 = 1.0 mm)

Figures 50–53. Costa Rican Dromaeolus species. 50 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 50–53. Costa Rican Dromaeolus species. 50) Dromaeolus tetricus, dorsal habitus. 51) Dromaeolus tripartitus, dorsal habitus. 52) Dromaeolus vanus, dorsal habitus. 53) Dromaeolus variegatus, dorsal habitus. (Scale: 50–53 = 1.0 mm)

Figures 71–74. Costa Rican Nematodes species. 71 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 71–74. Costa Rican Nematodes species. 71) Nematodes mannerheimi, dorsal habitus. 72) Nematodes mexicanus, dorsal habitus. 73) Nematodes apicalis sp. nov., dorsal habitus. 74) Nematodes apicalis sp. nov., ventral habitus. (Scale: 72–74 = 1.0 mm; 71 = 5.0 mm)

Figures 31–34. Costa Rican macraulacine eucnemids. 31 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 31–34. Costa Rican macraulacine eucnemids. 31) Onichodon confluentus sp. nov., male holotype, ventral habitus. 32) Onichodon confluentus sp. nov., female allotype, dorsal habitus. 33) Onichodon rufus sp. nov., dorsal habitus. 34) Onichodon rufus sp. nov., ventral habitus. (Scale: 31–32 = 5.0 mm; 33–34 = 1.0 mm)

Figures 35–39. Costa Rican macraulacine eucnemids. 35 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 35–39. Costa Rican macraulacine eucnemids. 35) Isarthrus striatus sp. nov., dorsal habitus. 36) Isarthrus striatus sp. nov., ventral habitus. 37) Absensiugum brunneum sp. nov., male holotype, dorsal habitus. 38) Absensiugum brunneum sp. nov., male holotype, ventral habitus. 39) Absensiugum brunneum sp. nov., Male aedeagus, dorsal view. (Scale: 35–36 = 5.0 mm; 37–39 = 1.0 mm)

Figures 44–49. Costa Rican Dromaeolus species. 44 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 44–49. Costa Rican Dromaeolus species. 44) Dromaeolus fastidiosus, dorsal habitus. 45) Dromaeolus morens, dorsal habitus. 46) Dromaeolus ornatulus, dorsal habitus. 47) Dromaeolus panamensis, dorsal habitus. 48) Dromaeolus pusio, dorsal habitus. 49) Dromaeolus sallei, dorsal habitus. (Scale: 44, 46–49 = 1.0 mm; 45 = 5.0 mm)

Figures 27–30. Costa Rican macraulacine eucnemids. 27 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 27–30. Costa Rican macraulacine eucnemids. 27) Maelodrus costaricensis sp. nov., dorsal habitus. 28) Maelodrus costaricensis sp. nov., lateral habitus. 29) Maelodrus costaricensis sp. nov., ventral habitus. 30) Onichodon confluentus sp. nov., male holotype, dorsal habitus. (Scale: 27–29 = 1.0 mm; 30 = 5.0 mm)

Figures 10–16. Costa Rican Adelothyreus species. 10 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 10–16. Costa Rican Adelothyreus species. 10) Adelothyreus brevis sp. nov., dorsal habitus. 11) Adelothyreus brevis sp. nov., pronotal lateral habitus. 12) Adelothyreus brevis sp. nov., ventral habitus. 13) Adelothyreus costaricensis sp. nov., male holotype, dorsal habitus. 14) Adelothyreus costaricensis sp. nov., male holotype, pronotal lateral habitus. 15) Adelothyreus costaricensis sp. nov., male holotype, ventral habitus. 16) Adelothyreus costaricensis sp. nov. female allotype, dorsal habitus. (Scale: 10–16 = 1.0 mm)

Figures 17–22. Costa Rican Eucnemidae. 17 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 17–22. Costa Rican Eucnemidae. 17) Adelothyreus totus sp. nov., dorsal habitus. 18) Adelothyreus totus sp. nov., pronotal lateral habitus. 19) Adelothyreus totus sp. nov., ventral habitus. 20) Quirsfeldia stethonoides sp. nov., dorsal habitus. 21) Quirsfeldia stethonoides sp. nov., pronotal lateral habitus. 22) Quirsfeldia stethonoides sp. nov., ventral habitus. (Scale: 17–22 = 1.0 mm)

Figures 63–66. Costa Rican Deltometopus species. 63 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 63–66. Costa Rican Deltometopus species. 63) Deltometopus foveolatus, dorsal habitus. 64) Deltometopus bicolor sp. nov., male holotype, dorsal habitus. 65) Deltometopus bicolor sp. nov., male holotype, ventral habitus. 66) Deltometopus bicolor sp. nov., female allotype, dorsal habitus. (Scale: 63–66 = 1.0 mm)

Figures 67–70. Costa Rican Nematodes species. 67 in A new genus and sixteen new species of false click beetles (Coleoptera: Eucnemidae) described from the Heredia Province of Costa Rica with several additional records from the Osa Peninsula and Panama

Figures 67–70. Costa Rican Nematodes species. 67) Nematodes biarti, dorsal habitus. 68) Nematodes conjunctus, dorsal habitus. 69) Nematodes cuneatus, dorsal habitus. 70) Nematodes cylindricus, dorsal habitus. (Scale: 67 = 1.0 mm; 68–70 = 5.0 mm)

Fig. 16 in Three new species of Patrus Aubé with additional records of Gyrinidae from China (Coleoptera, Gyrinidae)

Fig. 16. Patrus procerus (Régimbart, 1884) (SYSU). A. ♀, habitus, dorsal view. B. ♀, habitus, ventral view. C. ♀, habitus, lateral view. D. ♂, genitalia. Scale bars: A–C = 1 mm; D = 0.5 mm.

Fig. 15 in Three new species of Patrus Aubé with additional records of Gyrinidae from China (Coleoptera, Gyrinidae)

Fig. 15. Patrus marginepennis angustilimbus (Ochs, 1925), ♀, habitus (IZCAS). A. Dorsal view. B. Ventral view. C. Lateral view. Scale bars = 1 mm.

Fig. 13 in Three new species of Patrus Aubé with additional records of Gyrinidae from China (Coleoptera, Gyrinidae)

Fig. 13. Patrus haemorrhous (Régimbart, 1891), ♀, habitus (SHNU). A. Dorsal view. B. Lateral view. Scale bar = 1 mm.

Fig. 11 in Three new species of Patrus Aubé with additional records of Gyrinidae from China (Coleoptera, Gyrinidae)

Fig. 11. Patrus annandalei (Ochs, 1925) (SYSU). A. ♀, habitus, dorsal view. B. ♀, habitus, ventral view. C. ♀, habitus, lateral view. D. ♀, surface sculpture on elytra. E. ♀, epipleural angle. F. ♂, male genitalia. Scale bars: A–C = 1 mm; D =30 μm; E = 100 μm; F = 0.5 mm.

Fig. 14 in Three new species of Patrus Aubé with additional records of Gyrinidae from China (Coleoptera, Gyrinidae)

Fig. 14. Patrus haemorrhous (Régimbart, 1891), syntypes (MNHN). A. ♀, habitus, dorsal view. B. ♂, habitus, lateral view. C. Label of specimen A. D. Label of specimen B. Figures provided by Antoine Mantilleri. Scale bars = 2 mm.

Fig. 12 in Three new species of Patrus Aubé with additional records of Gyrinidae from China (Coleoptera, Gyrinidae)

Fig. 12. Patrus coomani (Peschet, 1925) (SYSU). A. ♂, habitus, dorsal view. B. ♀, habitus, dorsal view. C. ♂, habitus, lateral view. D. ♀, habitus, lateral view. E. ♂, habitus, ventral view. F. ♂, surface sculpture on elytra. G. ♂, epipleural angle. H. ♂, genitalia. Scale bars: A–E = 1 mm; F–G = 100 μm; H = 0.5 mm.