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Figs. 22–25 in Review of the New Zealand endemic family Cyclaxyridae, new family (Coleoptera: Polyphaga)

Figs. 22–25. Male genitalia of Cyclaxyra jelineki sp. nov. 22 – tegmen, dorsal view; 23 – tegmen, lateral view; 24 – penis, dorsal view (basal strut omitted). 25 – spiculum gastrale. Scale bar = 0.5 mm.

Figs. 26–29 in Review of the New Zealand endemic family Cyclaxyridae, new family (Coleoptera: Polyphaga)

Figs. 26–29. Male genitalia of Cyclaxyra politula (Broun, 1881). 26 – tegmen, dorsal view; 27 – tegmen, lateral view; 28 – penis, dorsal view (basal strut omitted); 29 – spiculum gastrale. Scale bar = 0.5 mm.

Figs. 19–21 in Review of the New Zealand endemic family Cyclaxyridae, new family (Coleoptera: Polyphaga)

Figs. 19–21. Frons of Cyclaxyra Broun, 1893. 19 – C. jelineki sp. nov.; 20–21 – C. politula (Broun, 1881) (20 – typical form; 21 – nearly impunctate form).

Figs. 14–18 in Review of the New Zealand endemic family Cyclaxyridae, new family (Coleoptera: Polyphaga)

Figs. 14–18. Details of larval Cyclaxyra politula (Broun, 1881). 14 – head capsule, dorsal view; 15 – head capsule, ventral view; 16 – mandible; 17 – apex of mandible; 18 – labium and maxilla.

Figs. 10–13 in Review of the New Zealand endemic family Cyclaxyridae, new family (Coleoptera: Polyphaga)

Figs. 10–13. Genitalia of Cyclaxyra politula (Broun, 1881).10–11 – penis showing basal strut and flagellum (10 – dorsal view, 11 – lateral view). 12–13 – female genitalia (12 – ovipositor, 13 – spermatheca). Scale bars = 0.5 mm.

Figs. 94–103. Taxa excluded from the hydrophilid lineage. 94–99 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 94–103. Taxa excluded from the hydrophilid lineage. 94–99 – 'Mesohelophorus' mongolicus Ponomarenko, 1986 (94–95 – PIN 3152/4355, holotype, piece and counterpiece; 96, 99 – PIN 3152/4312, piece and counterpiece; 97 – same specimen, detail of head in dorsal view; 99 – head and prosternum of the holotype). 100 – 'Mesosperchus' angulatus Ponomarenko, 1985, holotype; 101 – 'Mesosperchus' schultzi Ponomarenko, 1985, holotype, piece; 102–103 – 'Mesosperchus' notatus Ponomarenko, 1977, holotype (102 – general view; 103 – detail of elytral structure). Scale bars: 0.5 mm.

Figs. 38–41 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 38–41. Helophorus (Mesohelophorus) palaeosibiricus nom. nov. 38–39 – PIN 3063/841, holotype, piece and counterpiece; 40–41 – PIN 3064/6981, piece and counterpiece. Scale bars: 0.5 mm.

Figs. 42–52 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 42–52. Representatives of Hydrophilopsia Ponomarenko, 1986 and Laetopsia gen. nov. 42–48 – Hydrophilopsia longitarsalis Ponomarenko, 1986, holotype (42–43 – piece and couterpiece, general views; 44 – detail of the head and thorax, photo under alcohol; 45 – same, photo in dry state; 46 – detail of aedeagus; 47 – legs of piece, 48 – legs of counterpiece). 49–52 – Laetopsia shatrovskiyi (Prokin, Ren & Fikáček, 2010) (49, 51 – CNU 2009199; 50, 52 – CNU 2010242).

Figs. 63–72. Cretotaenia pallida Ponomarenko, 1977. 63 – PIN 1989 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 63–72. Cretotaenia pallida Ponomarenko, 1977. 63 – PIN 1989/2890 (holotype), general view; 64 – PIN 3064/6848, detail of the head in dorsolateral view; 65 – PIN 3064/6872, detail of anterior portion of the head; 66 – PIN 3064/6899, head and prothorax; 67 – PIN 3064/6883, head, thorax and abdominal segments 1–2; 68 – PIN 4210/595, detail of the head; 69 – PIN 3064/6848, detail of abdominal segments in lateral view; 70 – PIN 3064/6871, urogomphi; 71 – PIN 1989/2900, urogomphi; 72 – PIN 3064/6897, urogomphi. Scale bars: 0.5 mm.

Figs. 19–25. Cretotaenia pallida Ponomarenko, 1977. 19 – PIN 3064 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 19–25. Cretotaenia pallida Ponomarenko, 1977. 19 – PIN 3064/6848, larva in dorsolateral position; 20 – PIN 1989/2890 (holotype), general view; 21 – PIN 3064/6883, head, thorax and abdominal segments 1–2; 22 – PIN 1989/2900, urogomphi; H: 23 – PIN 3064/6871, urogomphi; 24 – PIN 3064/6953, urogomphi; 25 – PIN 3064/6897, urogomphi. Scale bars: 1 mm.Abbreviations: msth – mesothorax; mtth – metathorax; prth – prothorax; sp – spiracle; ur – urogomphus.

Figs. 9–13. Laetopsia gen. nov. 9 – L in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 9–13. Laetopsia gen. nov. 9 – L. hydraenoides (Prokin, Ren & Fikáček, 2010), holotype. 10–11 – L. mongolica (Ponomarenko, 1987) (10 – PIN 3664/1567, holotype; 11 – PIN 3664/1661). 12–13 – L. shatrovskiyi (Prokin, Ren & Fikáček, 2010) (12 – CNU 2010199; 13 – CNU 2010242, holotype). Scale bars: 2 mm (a: Figs. 9, 12–13; b: Figs. 10–11). Abbreviations: ant – antenna; sct – scutellum.

Figs. 5–8 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 5–8. Laetopsia baissensis (Ponomarenko, 1987). 5 – PIN 3064/7018; 6 – PIN 3064/7010, detail of prosternum; 7 – PIN 3064/6987; 8 – PIN 3064/6984, elytron. Scale bars 2 mm (a: Fig. 5, b: Fig. 6, c: Figs. 7–8). Abbreviations: ant – antenna; sct – scutellum.

Figs. 29–37 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 29–37. Helophorus (Mesosperchus) tarsalis (Ponomarenko, 1977). 29–30 – PIN 3063/2194, piece and counterpiece; 31–32 – PIN 3063/2192 (31 – general view of the piece, 32 – detail of genitalia of the counterpiece); 33–34 – PIN 3063/735, holotype of Mesohelophorus elongatus Ponomarenko, 1990, piece and counterpiece; 35 – PIN 3063/116; 36 – PIN 3015/367, holotype of Mesosperchus tarsalis Ponomarenko, 1977; 37 – PIN 3015/1769. Scale bars: 1 mm. Abbreviations: aed – aedeagus; mxp – maxillary palpus; sct – scutellum.

Figs. 27–28 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 27–28. Representatives of Helophorus, subgenus Mesosperchus Ponomarenko, 1977. 27 – H. (M.) inceptivus sp. nov. (PIN 4270/1008, holotype); 28 – H. (M.) yixianus sp.nov. (CNU 2010004, holotype). Scale bars: 1 mm. Abbreviations: ant – antenna.

Figs. 73–82 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 73–82. Representatives of Helophorus, subgenus Mesosperchus Ponomarenko, 1977. 73–79 – Helophorus tarsalis (Ponomarenko, 1977) (73 – PIN 3063/116, paratype; 74 – PIN 3063/2192, piece, general view; 75 – PIN 3015/1769; 76 – PIN 3063/2192, counterpiece, detail of male genitalia; 77– PIN 3063/2194. piece under alcohol; 78 – same specimen, counterpiece in dry condition; 79 – PIN 3015/367, holotype). 80 – Helophorus gracilis (Prokin, Ren & Fikáček, 2010), CNU 2010018, holotype. 81–82 – Helophorus inceptivus, PIN 4270/1008 (81 –detail of head and pronotum; 82 – general view). Scale bars: 1 mm (Figs. 73–80, 82); 0.5 mm (Fig. 81).

Fig. 26 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Fig. 26. Frequency histogram of head width of the examined specimens of Cretotaenia pallida (n = 15).

Figs. 1–4. Hydrophilopsia longitarsalis Ponomarenko, 1987 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 1–4. Hydrophilopsia longitarsalis Ponomarenko, 1987 (holotype). 1 – piece, general view; 2 – counterpiece, general view; 3 – detail of antenna; 4 – detail of the aedeagus. Scale bar: 2 mm (corresponds to Figs. 1–2). Abbreviations: acl – antennal club; aed – aedeagus; ant – antenna; cup – cupule; ins – intermediate antennomeres; ped – pedicel; sc – scapus.

Figs. 53–62 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 53–62. Representatives of Laetopsia gen. nov. 53–56 – L. baissensis (Ponomarenko, 1986) (53 – PIN 3064/7016; 54–55 – PIN 3064/6987, piece and counterpiece; 56 – detail of PIN 3064/6987). 57, 61 – L. hydraenoides (Prokin, Ren & Fikáček, 2010), CNU 2010021, holotype (57 – detail of head and pronotum; 61 – general view). 58–60 – L. mongolica (Ponomarenko, 1987) (58 – PIN 3664/1661, detail of head and pronotum; 59 – PIN 3664/1772; 60 – PIN 3664/1567, holotype). 62 – L. bontsaganica (Prokin, 2009), holotype. Scale bars: 1 mm.

Figs. 14–18. Cretotaenia pallida Ponomarenko, 1977 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 14–18. Cretotaenia pallida Ponomarenko, 1977 (details of the head). 14 –PIN 3064/6899; 15 – PIN 4210/595; 16 – PIN 3064/6898; 17 – PIN 3064/6848, detail of the head in dorsolateral position; 18 – PIN 3064/6872, detail of right mandible and nasale. Scale bars: 2 mm. Abbreviations: ant – antenna; epl – epistomal lobe; lb – labium; md – mandible; mx – maxilla; ocf – occippital foramen.

Figs. 113–119. Taxa excluded from the helophorid lineage. 113 in Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga)

Figs. 113–119. Taxa excluded from the helophorid lineage. 113 – Helophoropsis brodiei (Giebel, 1856), holotype; 114 – 'Mesosperchus' angulatus Ponomarenko, 1985, holotype; 115 – 'Mesosperchus' notatus Ponomarenko, 1977, holotype; 116 – Tychon antiquum (Giebel, 1856), holotype; 117–118 – 'Mesosperchus' schultzi Ponomarenko, 1985, holotype, piece and counterpiece; 119 – Zetemenos sexlineatus Bode, 1953, holotype. Scale bars: 1 mm.