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Fig. 2 in Ochthebius hajeki sp. nov. from Socotra Island (Coleoptera: Hydraenidae)

Fig. 2. Ochthebius hajeki sp. nov., aedeagus, holotype (a) dorso-lateral view; (b) almost dorsal view; (c) strictly dorsal view of apex; (d) lateral view; (e) ventral view. Scale bar: 0.1 mm.

Figs 10A–D in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 10A–D. Aedeagus in dorsal (left) and lateral (right) view: A – Canuschiza adah sp. nov., holotype; B – C. croton sp. nov., holotype; C – C. dracaena sp. nov., holotype; D – C. firmihin sp. nov., holotype. Scale bar: 1.0 mm.

Figs 9A–I in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 9A–I. Canuschiza skand sp. nov., dorsal view: A–E – male, holotype, body length 12.5 mm; F–I – female, paratype No. 33, body length 14.2 mm. A, F – habitus; B, G – protarsal claw; C, H – detail of laterobasal area of pronotum and elytron; D, I – head; E – detail of lateroapical area of pronotum. Not to scale.

Figs 8A–H in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 8A–H. Canuschiza jatropha sp. nov., dorsal view:A–D – male, holotype, body length 14.4 mm; E–H – female, paratype No. 27, body length 14.0 mm. A, E – habitus; B, F – protarsal claw; C, G – detail of laterobasal area of pronotum and elytron; D, H – head. Not to scale.

Figs 7A–I. Canuschiza insularis Lacroix, 1999 in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 7A–I. Canuschiza insularis Lacroix, 1999, dorsal view: A–E – male, holotype, body length 12.5 mm; F–I – female, specimen from Aloove, body length 13.4 mm. A, F – habitus; B, G – protarsal claw; C, H – detail of laterobasal area of pronotum and elytron; D, I – head; E – labels. Not to scale.

Figs 4A–H in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 4A–H. Canuschiza dracaena sp. nov., dorsal view: A–D – male, holotype, body length 14.0 mm; E–H – female, paratype No. 5, body length 16.5 mm. A, E – habitus; B, F – protarsal claw; C, G – detail of laterobasal area of pronotum and elytron; D, H – head. Not to scale.

Figs 2A–H in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 2A–H. Canuschiza adah sp. nov., dorsal view: A–D – male, holotype, body length 13.7 mm; E–H – female, paratype No. 7, body length 13.0 mm. A, E – habitus; B, F – protarsal claw; C, G – detail of laterobasal area of pronotum and elytron; D, H – head. Not to scale.

Figs 6A–D in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 6A–D. Canuschiza hagher sp. nov., male, holotype, body length 17.0 mm, dorsal view.A – habitus; B – protarsal claw; C – detail of laterobasal area of pronotum and elytron; D – head. Not to scale.

Figs 1A–D. Canuschiza Lacroix, 1999 in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 1A–D. Canuschiza Lacroix, 1999:A–B – head, dorsal view; C–D – metathoracic wing.A – Canuschiza insularis Lacroix, 1999, holotype; B – C. minuta Lacroix, 1999, holotype; C – C. hagher sp. nov., holotype; D – C. skand sp. nov., holotype. Scale bar: 2.0 mm. Figs A, B not to scale.

Figs 5A–D in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 5A–D. Canuschiza firmihin sp. nov., male, holotype, body length 9.0 mm, dorsal view.A – habitus; B – protarsal claw; C – detail of laterobasal area of pronotum and elytron; D – head. Not to scale.

Figs 3A–H in Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group

Figs 3A–H. Canuschiza croton sp. nov., dorsal view: A–D – male, holotype, body length 13.8 mm; E–H – female, paratype No. 4, body length 13.9 mm. A, E – habitus; B, F – protarsal claw; C, G – detail of laterobasal area of pronotum and elytron; D, H – head. Not to scale.

Figs. 1–2 in New species of Euconnus, subgen. Euconophron (Coleoptera: Staphylinidae: Scydmaeninae) from Socotra Island

Figs. 1–2. Euconnus (Euconophron) socotranus sp. nov.: 1 – aedeagus in dorsal aspect; 2 – aedeagus in lateral aspect, parameres omitted. Scale bar = 0.1 mm.

Figs. 1–6 in Limnebius dioscoridus sp. nov. from Socotra Island (Coleoptera: Hydraenidae)

Figs. 1–6. Limnebius dioscoridus sp. nov. 1 – habitus; 2–3 – aedeagus (2 – ventral view, 3 – dorso-lateral view); 4–6 – aedeagal apex in ventral view (4 – Limnebius arabicus Balfour-Browne, 1951, 5 – L. pararabicus Jäch & Delgado, 2010, 6 – L. dioscoridus sp. nov.). Scale bars to Figs. 2–6: 0.05 mm

Figs. 7–10 in Limnebius dioscoridus sp. nov. from Socotra Island (Coleoptera: Hydraenidae)

Figs. 7–10. Limnebius dioscoridus sp. nov.: 7 – gonocoxite, 8 – female tergite X, 9–10 – spermatheca. Scale: 0.05 mm.

Figs. 37–43 in The Hydrophiloid beetles of Socotra Island (Coleoptera: Georissidae, Hydrophilidae)

Figs. 37–43. Male genitalia of the Hemisphaera species (37, 39–40, 42 – aedeagus; 38, 41, 43 – sternite 9). 37–38 – H. guignoti Schaefer, 1975 (Algeria, 'Philippeville' [= Skikda], coll. NMPC); 39–41 – H. miltiadis Sahlberg, 1908 (39 – paratype, Lesbos, coll. IRSNB; 40–41 – Turkey, Izmir, coll. IRSNB); 41–43 – H. lima Orchymont, 1941 (paratype, Tanzania, Ukerewe, Victoria Nyanza, coll. IRSNB).

Figs. 1–6 in The Hydrophiloid beetles of Socotra Island (Coleoptera: Georissidae, Hydrophilidae)

Figs. 1–6. Georissus maritimus sp. nov. (paratypes). 1 – pronotum and elytra in dorsal view; 2 – head, dorsal view; 3–4 – detail of pronotum (3 – dorsal view; 4 – dorsolateral view); 5 – elytron, dorsolateral view; 6 – abdomen.

Figs. 7–8 in The Hydrophiloid beetles of Socotra Island (Coleoptera: Georissidae, Hydrophilidae)

Figs. 7–8. Genitalia of Socotran endemic Georissus species. 7 – G. maritimus sp. nov. (a, b: two different ventral views of the same aedeagus; c: lateral view); 8 – G. nemo sp. nov., ventral view.

Figs. 23–25 in The Hydrophiloid beetles of Socotra Island (Coleoptera: Georissidae, Hydrophilidae)

Figs. 23–25. Hemisphaera socotrana sp. nov. 23–24 – general habitus (23 – dorsal view, 24 – lateral view); 25 – type locality (stream in wadi Ayhaft).

Figs. 15–22. Socotran endemic Georissus species and their habitats. 15–16 – G in The Hydrophiloid beetles of Socotra Island (Coleoptera: Georissidae, Hydrophilidae)

Figs. 15–22. Socotran endemic Georissus species and their habitats. 15–16 – G. maritimus sp. nov. (15 – dorsal view; 16 – lateral view). 17–18 – G. nemo sp. nov. (17 – dorsal view; 18 – lateral view). 19–20 – the sand tongue 3 km NE of Shuab, type locality of G. maritimus sp. nov. (19 – general view of the habitat; 20 – satellite view showing the position of the locality); 21–22 – the stream at Arhar, type locality of G. nemo sp. nov. (21 – general view of the habitat; 22 – satellite view showing the position of the locality).

Figs. 9–14 in The Hydrophiloid beetles of Socotra Island (Coleoptera: Georissidae, Hydrophilidae)

Figs. 9–14. Georissus nemo sp. nov. (9–13 – paratype; 14 – holotype). 9 – pronotum and elytra in dorsal view; 10 – head, dorsal view; 11–12 – detail of pronotum (11 – dorsal view; 12 – dorsolateral view); 13 – elytron, dorsolateral view; 14 – abdomen.