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Fig. 2 in Redescription of the Neotropical water scavenger beetle genus Phaenostoma (Coleoptera: Hydrophilidae) with description of two new species

Fig. 2. Sternal process of Phaenostoma species. A – P. kontax sp. nov.; B – P. posticatum (Sharp, 1887); C – P. stochasma sp. nov.

Fig. 1 in Redescription of the Neotropical water scavenger beetle genus Phaenostoma (Coleoptera: Hydrophilidae) with description of two new species

Fig. 1. Dorsal and ventral habitus of Phaenostoma posticatum (Sharp, 1887) (Costa Rica). Scale bar = 1.0 mm.

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Fig. 6 in A new species of the genus Cyrtonion (Coleoptera: Hydrophilidae: Megasternini) from the Democratic Republic of the Congo

Fig. 6. Known distribution of the species of the genus Cyrtonion Hansen, 1989. Green area covers distribution of evergreen rain forest.

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Figs. 1-4 in A new species of the genus Cyrtonion (Coleoptera: Hydrophilidae: Megasternini) from the Democratic Republic of the Congo

Figs. 1-4. Aedeagophores of Cyrtonion Hansen, 1989 species. 1-2 – C. moto sp. nov., holotype; 3 – C. ghanense Hansen, 1989, paratype; 4 – C. sculpticolle (Régimbart, 1907), paratype. 1 – aedeagus; 2-4 – apical portion of the median lobe.

Fig. 4 in Redescription of the Neotropical water scavenger beetle genus Phaenostoma (Coleoptera: Hydrophilidae) with description of two new species

Fig. 4. Aedeagi of Phaenostoma species. A – P. posticatum (Sharp, 1887) (Costa Rica); B – P. kontax sp. nov. (holotype); C – P. stochasma sp. nov. (holotype; Costa Rica); D – P. stochasma sp. nov. (paratype; Venezuela). Scale bar = 0.2 mm.

Fig. 3 in Redescription of the Neotropical water scavenger beetle genus Phaenostoma (Coleoptera: Hydrophilidae) with description of two new species

Fig. 3. Elytron of Phaenostoma kontax sp. nov. A – entire elytron; B – enlargement of elytral surface.

Figs 14–17 in Aquatic Coleoptera of North Oman, with description of new species of Hydraenidae and Hydrophilidae

Figs 14–17. Habitus of new species: 14 – Hydraena naja sp. nov.; 15 – Ochthebius alhajarensis sp. nov.; 16 – Ochthebius bernard sp. nov.; 17 – Agraphydrus elongatus sp. nov. Scale bars: 1 mm.

Figs 18–21 in Aquatic Coleoptera of North Oman, with description of new species of Hydraenidae and Hydrophilidae

Figs 18–21. Aedeagus of new species: 18 – Hydraena naja sp. nov.; 19 – Ochthebius alhajarensis sp. nov.; 20 – Ochthebius bernard sp. nov.; 21 – Agraphydrus elongatus sp. nov. Scale bars: 0.2 mm.

Figs 8–13 in Aquatic Coleoptera of North Oman, with description of new species of Hydraenidae and Hydrophilidae

Figs 8–13. Some of the sampled localities in north Oman. 8 – Loc. No. 8: wadi Bani Ghafir; 9 – Loc. No. 9: residual pools in wadi Indam; 10 – Loc. No. 11: residual pools in wadi; 11 – Loc. No. 12: Qalhat, residual pools in wadi; 12 – Loc. No. 13: marsh next to Bamah; 13 – Loc. No. 14: residual pools in wadi Al-Mayb. See Table 1 for details on the localities, and Fig. 1 for their geographical location.

Figs 2–7 in Aquatic Coleoptera of North Oman, with description of new species of Hydraenidae and Hydrophilidae

Figs 2–7. Some of the sampled localities in north Oman. 2 – Loc. No. 1: Ghul spring with pools; 3 – No. 2: residual pools in wadi in Bahla city; 4 – Loc. No. 3: residual pools in wadi; 5 – Loc. No. 4: source of wadi Bani Awf; 6 – Loc. No. 4: source of wadi Bani Awf; 7 – Loc. No. 5: wadi Bani Awf. See Table 1 for details on the localities, and Fig. 1 for their geographical location.

Fig. 11 in A review of Thysanarthria with description of seven new species and comments on its relationship to Chaetarthria (Hydrophilidae: Chaetarthriini)

Fig. 11. Distribution of Thysanarthria and American Chaetarthria in Asia (A–B) and Near East (C), and examples of habitats of Thysanarthria (D–F). Localities: D – India, Madhya Pradesh, Bhadhua Chora stream ca. 10 km E of Matkuli Jhir, habitat of T. ceylonensis Hebauer, 2001; E – Republic of South Africa, Western Cape, 8 km NEE of Stanford, habitat of T. atriceps (Régimber, 1903), collecting spot marked by an arrow; F–G – Taiwan, Wufeng distr., 4.3 km SEE of Chaoyang University of Technology, habitat of T. chui sp. nov. (G – detail of sandy shore with one alive beetle). Photo D by M. Jäch, photo E by M. Fikáček, F–G by H.-C. Liu.

Figs 12A–C, F–I with Figs 2N–S in A review of Thysanarthria with description of seven new species and comments on its relationship to Chaetarthria (Hydrophilidae: Chaetarthriini)

Figs 12A–C, F–I with Figs 2N–S). External characters support this assignment: dorsal setae are simple and cut-off apically (compare Fig. 12K with Fig. 2d), elytra lack longitudinal striae except for sutural stria, and pronotum and elytra are yellowish in color. The specimens above seem to stand close to the Argentinian species C. argentina Miller, 1974 and C. hermani Miller, 1974 of the C. atra group defined by MILLER (1974). When compared with the genitalia drawings and descriptions provided by MILLER (1974) it seems that the specimens examined here represent an undescribed species. We are however leaving it undescribed, as it is likely introduced and a more detailed comparison with the American species would be necessary to diagnose the species properly. The presence of the species which is clearly an element of Neotropical fauna in Saudi Arabia is very unexpected. The first author discussed the problem with both collectors (J. Bezděk and D. Král) and with the person who

Fig. 10 in A review of Thysanarthria with description of seven new species and comments on its relationship to Chaetarthria (Hydrophilidae: Chaetarthriini)

Fig. 10. Male genitalia of Thysanarthria species, holotypes. A–E – T. persica sp. nov. (A–C – aedeagus in dorsal, lateral and ventral view; D–E – detail of median lobe and parameres in dorsal and ventral view). F–J – T. wadicola sp. nov. (F–H – aedeagus in dorsal, lateral and ventral view; I–J – detail of median lobe and parameres in dorsal and ventral view).

Fig. 9 in A review of Thysanarthria with description of seven new species and comments on its relationship to Chaetarthria (Hydrophilidae: Chaetarthriini)

Fig. 9. Male genitalia of Thysanarthria species, holotypes. A–E – T. saurahana sp. nov. (A–C – whole aedeagus in dorsal, lateral and ventral view; D–E – detail of median lobe and parameres in dorsal and ventral view). F–J – T. siamensis Hebauer, 2001 (F–H – whole aedeagus in dorsal, lateral and ventral view; I–J – details of parameres and median lobe in dorsal and ventral view).

Fig. 7 in A review of Thysanarthria with description of seven new species and comments on its relationship to Chaetarthria (Hydrophilidae: Chaetarthriini)

Fig. 7. Male genitalia of Thysanarthria championi (Knisch, 1924). A–E – lectotype of Chaetarthria championi Knisch, 1924 (A–C – whole aedeagus in dorsal, lateral and ventral view; D – detail of median lobe and parameres in dorsal view; E – same after KOH treatment, with fully everted internal sac). F–J – lectotype of Chaetarthriomorphus sulcatus Chiesa, 1967 (F–H – whole aedeagus in dorsal, lateral and ventral view; I–J – details of parameres and median lobe in dorsal and ventral view).

Fig. 8 in A review of Thysanarthria with description of seven new species and comments on its relationship to Chaetarthria (Hydrophilidae: Chaetarthriini)

Fig. 8. Male genitalia of Thysanarthria species, holotypes.A–E – T. chui sp. nov. (A–C – whole aedeagus in dorsal, lateral and ventral view; D–E – detail of median lobe and parameres in dorsal and ventral view). F–J – T. hongsonensis Hebauer, 2001 (F–H – whole aedeagus in dorsal, lateral and ventral view; I–J – details of parameres and median lobe in dorsal and ventral view). K–O – T. madurensis Hebauer, 2001 (K–M – whole aedeagus in dorsal, lateral and ventral view; N–O – details of median lobe and parameres in dorsal and ventral view).

Fig. 5 in A review of Thysanarthria with description of seven new species and comments on its relationship to Chaetarthria (Hydrophilidae: Chaetarthriini)

Fig. 5. Male genitalia of Thysanarthria species, holotypes. A–E – T. brincki Hebauer, 2001 (A–C – whole aedeagus in dorsal, lateral and ventral view; D–E – detail of median lobe and parameres in dorsal and ventral view); F–J – T. cardamona sp. nov. (F–H – whole aedeagus in dorsal, lateral and ventral view; I–J – detail of median lobe and parameres in dorsal and ventral view); K–M – T. bengalensis Hebauer, 2001 (K – photo of the aedeagus before re-mounting; L – whole aedeagus in ventral view; M – whole aedeagus in lateral view).

Fig. 6 in A review of Thysanarthria with description of seven new species and comments on its relationship to Chaetarthria (Hydrophilidae: Chaetarthriini)

Fig. 6. Male genitalia of Thysanarthria species, holotypes (A–I, K–O) and paratype (J). A–E – T. bifida sp. nov. (A–C – whole aedeagus in dorsal, lateral and ventral view; D–E – detail of median lobe and parameres in dorsal and ventral view). F–J – T. trifida sp. nov. (F–H – whole aedeagus of the holotype in dorsal, lateral and ventral view; I – details of parameres of the holotype; J – same of the paratype). K–O – T. ceylonensis Hebauer, 2001 (K–M – whole aedeagus in dorsal, lateral and ventral view; N–O – details of median lobe and parameres in dorsal and ventral view).

Fig. 4 in A review of Thysanarthria with description of seven new species and comments on its relationship to Chaetarthria (Hydrophilidae: Chaetarthriini)

Fig. 4. Male genitalia of Thysanarthria species. A–E – T. atriceps (Régimbart, 1903) from Zambia: 20 km W of Gwanda, coll. NMPC (A–C – whole aedeagus in dorsal, lateral and ventral view; D–E – detail of median lobe and parameres in dorsal and ventral view); F–J – T. atriceps from Republic of South Africa: 8 km NEE of Stanford, coll. NMPC (F–H – whole aedeagus in dorsal, lateral and ventral view; I–J – detail of median lobe and parameres in dorsal and ventral view); K–O – T. brittoni Balfour-Browne, 1951, holotype (K–M – whole aedeagus in dorsal, lateral and ventral view; N–O – detail of median lobe and parameres in dorsal and ventral view).