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Fig. 13. Porrorhynchus species, female reproductive tract. A in Revision of the Southeast Asian Whirligig Beetle GenusPorrorhynchusLaporte, 1835 (Coleoptera: Gyrinidae: Gyrininae: Dineutini)

Fig. 13. Porrorhynchus species, female reproductive tract. A) P. landaisi, B) P. indicans, C) P. marginatus, D) P. depressus, E) P. misoolensis. More heavily sclerotized areas indicated in gray. Scale bars = 1 mm.

Fig. 9 in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 9. Morphology of Heterogyrus milloti, Spanglerogyrus albiventris, and Gyrinus amazonicus Ochs. A) Aedeagus of S. albiventris, ventral view, box indicates area shown in B, B) Basal piece of S. albiventris, C) Aedeagus of H. milloti, ventral view, box indicates area shown in D, D) Basal piece of H. milloti, E) Most of aedeagus of G. amazonicus, ventral view, bvp = basoventral process, F) metaventrite of H. milloti, showing metaventral discrimen with short transverse sulcus, G) Left elytron of H. milloti, scale bar = 1 mm.

Fig. 10 in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 10. Habitat of Heterogyrus milloti. A) Forest stream 3.8 km SE of Vohiparara village, 21.2498°S, 47.4041°E, 1,080 m, Ranomafana National Park, Fianarantsoa, Madagascar, B) Forest stream approximately 8 km E of Ivohibe village, 22.4755°S, 46.953°E, 1,010 m, Ampanasaha, Pic d'Ivohibe Special Reserve, Ihorombe, South of Andringitra N.P. Fianarantsoa, Madagascar.

Fig. 11 in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 11. Metacoxae of Gyrinidae, right lateral view showing metacoxal cavity, boxes indicate focal areas. A) Spanglerogyrus albiventris, B) Heterogyrus milloti, arrow indicates peg, C) Gyrinus sp., D) Gyretes sp.

Fig. 6. Heterogyrus milloti. A in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 6. Heterogyrus milloti. A) Male abdominal sternite VIII, box indicates area shown in B, scale bar = 500 µm, B) Apex of male abdominal sternite VIII.

Fig. 3 in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 3. Antennae of Heterogyrus milloti and Spanglerogyrus albiventris. A) Antenna of H. milloti, box indicates area shown in B, scale bar = 300 µm, B) Antennal apex of H. milloti, s.b. = sensilla basiconicum type, s.c. = sensilla chaetica type, scale bar = 50 µm, C) Most of antennal flagellum of S. albiventris, scale bar = 100 µm.

Fig. 1. Heterogyrus milloti. A in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 1. Heterogyrus milloti. A) Dorsal habitus of male, scale bar = 2 mm, B) Ventral habitus, lw = lateral wing of metaventrite, ma = metanepisternum, Roman numerals indicate abdominal sternites.

Fig. 2. Heterogyrus milloti. A in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 2. Heterogyrus milloti. A) Head capsule anterior view, scale bar = 500 µm, B) Oblique view of anterior half of body, C) Mentum and prementum, box indicates area shown in D, D) Prementum and medial lobe of mentum.

Fig. 8. Heterogyrus milloti, female reproductive tract. A in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 8. Heterogyrus milloti, female reproductive tract. A) Ventral view, B) Lateral view. Scale bar = 0.75 mm.

Fig. 7. Heterogyrus milloti, aedeagus. A in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 7. Heterogyrus milloti, aedeagus. A) Dorsal view, B) Lateral view, C) Ventral view. Scale bar = 1 mm.

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Figs 72–75 in Review of the whirligig beetle genus Gyrinus of Venezuela (Coleoptera: Gyrinidae)

Figs 72–75. Distribution maps of Gyrinus species within Venezuela.

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Figures 4–5 in First larval description and chaetotaxic analysis of the neotropical whirligig beetle genus Enhydrus Laporte (Coleoptera, Gyrinidae)

Figures 4–5. Enhydrus sulcatus, first-instar larva. (4) Cephalic capsule, dorsal view, (5) cephalic capsule, ventral view. Numbers and lowercase letters indicate primary setae and pores, respectively. Conspicuous additional setae indicated by solid squares. Inconspicuous additional setae not labeled). EB, egg bursters; FR, frontoclypeus; PA, parietal; TP, tentorial pits. Scale bar = 0.30 mm.

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Fig. 4 in Revision of the Southeast Asian Whirligig Beetle GenusPorrorhynchusLaporte, 1835 (Coleoptera: Gyrinidae: Gyrininae: Dineutini)

Fig. 4. Porrorhynchus marginatus, male, profemur. Scale bar = 1 mm.

Fig. 4 in The Morphology and Behavior of the Endemic Malagasy Whirligig Beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)

Fig. 4. Prosternum of Heterogyrus milloti, ventral view, scale bar = 200 µm.

Figure 9 from: Gustafson GT, Miller KB (2015) Тhe New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini). ZooKeys 476: 1-135. https://doi.org/10.3897/zookeys.476.8630

Figure 9 - Dineutus assimilis. A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm.

Figure 52 from: Gustafson GT, Miller KB (2015) Тhe New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini). ZooKeys 476: 1-135. https://doi.org/10.3897/zookeys.476.8630

Figure 52 - General distribution map. A Dineutus assimilis B Dineutus hornii C Dineutus nigrior D Dineutus discolor and Dineutus angustus.

Figure 6 from: Gustafson GT, Miller KB (2015) Тhe New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini). ZooKeys 476: 1-135. https://doi.org/10.3897/zookeys.476.8630

Figure 6 - Dineutus angustus. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm.

Figure 53 from: Gustafson GT, Miller KB (2015) Тhe New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini). ZooKeys 476: 1-135. https://doi.org/10.3897/zookeys.476.8630

Figure 53 - General distribution map. A Dineutus carolinus B Dineutus ciliatus and Dineutus robertsi C Dineutus serrulatus analis and Dineutus serrulatus serrulatus D Dineutus emarginatus.

Figure 46 from: Gustafson GT, Miller KB (2015) Тhe New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini). ZooKeys 476: 1-135. https://doi.org/10.3897/zookeys.476.8630

Figure 46 - Variation in specimens from Sierra de Zapotan, Narayit, Mexico. A ♂ Dineutus sublineatus dorsal habitus B ♂ Dineutus solitarius male dorsal habitus. ♀ Dineutus sublineatus from Salama Guatemala C dorsal habitus. All scale bars ≈ 2 mm.

Figure 43 from: Gustafson GT, Miller KB (2015) Тhe New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini). ZooKeys 476: 1-135. https://doi.org/10.3897/zookeys.476.8630

Figure 43 - Dineutus solitarius. A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm.