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Figs 18-20 in Taxonomic revision of the Australasian Hydrocanthus SAY 1833, with description of two new species (Coleoptera: Noteridae)

Figs 18-20: Habitats of Hydrocanthus in northern Australia: (18, 19) Galvan´s Gorge, Western Australia, East Kimberley. Habitat of numerous Dytiscidae and the Noteridae Hydrocanthus australasiae, H. waterhousei and Canthydrus ephemeralis WATTS 2001; (20) King Edward River Crossing, Kimberley Plateau, Western Australia. Habitat of H. australasiae.

Figs 7-11 in Taxonomic revision of the Australasian Hydrocanthus SAY 1833, with description of two new species (Coleoptera: Noteridae)

Figs 7-11: Median lobes of aedeagus (left lateral view, rotated): (7) Hydrocanthus balkei; (8) H. pederzanii; (9) H. australasiae; (10) H. waterhousei; (11) H. indicus.

Figs 12-16 in Taxonomic revision of the Australasian Hydrocanthus SAY 1833, with description of two new species (Coleoptera: Noteridae)

Figs 12-16: Left paramere (inner face, rotated): (12) Hydrocanthus balkei; (13) H. pederzanii; (14) H. australasiae; (15) H. waterhousei; (16) H. indicus.

Figs 1-6 in Taxonomic revision of the Australasian Hydrocanthus SAY 1833, with description of two new species (Coleoptera: Noteridae)

Figs 1-6: Habitus of: (1) Hydrocanthus balkei; (2) H. pederzanii; (3) H. australasiae; (4) H. waterhousei; (5) indicus, f. typica; (6) indicus, black form (scale: 2 mm).

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Figs. 1–8. Hydrocanthus paludimonstrus n in Hydrocanthus (Hydrocanthus) Paludimonstrus, A New Species From Bolivia (Coleoptera: Noteridae: Hydrocanthini) And Its Implications For Classification Of The Subgenera

Figs. 1–8. Hydrocanthus paludimonstrus n. sp. 1) Body, dorsal aspect; 2) body, left dorsolateral aspect; 3) body, left lateral aspect; 4) pronotum, indicating black pattern present in many males; 5–7) male genitalia; 5) median lobe, right lateral aspect; 6) right lateral lobe, right lateral aspect; 7) Left lateral lobe, left lateral aspect; 8) female genitalia. bc = bursa copulatrix, co = common oviduct, fd = fertilization duct, gc = gonocoxa, gs = gonocoxosternite, lt = laterotergite, r = rami, sd = spermathecal duct, sp = spermatheca, vs = ventral sclerite. Scale bars; a = 1.00 mm for Figures 1–4; b = 0.25 mm for Figure 8.

FIGURES 4–10. Hydrocanthus debilis Sharp, 1882, instar I in Description and chaetotaxic analysis of the larval instars of Hydrocanthus debilis Sharp, 1882 (Coleoptera: Noteridae)

FIGURES 4–10. Hydrocanthus debilis Sharp, 1882, instar I: (4) left antenna, dorsal aspect; (5) right antenna, ventral aspect; (6) left mandible, dorsal aspect; (7) right maxilla, dorsal aspect; (8) left maxilla, ventral aspect; (9) labium, dorsal aspect; (10) labium, ventral aspect. Numbers and lowercase letters indicate primary setae and pores respectively. AN, antenna; LA, labium; MN, mandible; MX, maxilla. Scale bars = 0.04 mm.

FIGURES 1–3. Hydrocanthus debilis Sharp, 1882, instar I in Description and chaetotaxic analysis of the larval instars of Hydrocanthus debilis Sharp, 1882 (Coleoptera: Noteridae)

FIGURES 1–3. Hydrocanthus debilis Sharp, 1882, instar I: (1) habitus, dorsal aspect; (2) cephalic capsule, dorsal aspect; (3) cephalic capsule, ventral aspect. Numbers and lowercase letters indicate primary setae and pores respectively. EB, egg burster; FR, frontoclypeus; PA, parietal; TP, tentorial pit. Scale bars = 0.50 mm for Fig. 1 and 0.10 mm for Figs 2–3.

FIGURES 17–20. Hydrocanthus debilis Sharp, 1882 in Description and chaetotaxic analysis of the larval instars of Hydrocanthus debilis Sharp, 1882 (Coleoptera: Noteridae)

FIGURES 17–20. Hydrocanthus debilis Sharp, 1882, instar III: (17) head, dorsal aspect; (18) left prothoracic leg, anterior aspect; (19) right prothoracic leg, posterior aspect; (20) abdominal segment VIII, dorsal aspect. Numbers and lowercase letters indicate primary setae and pores respectively. Scale bars = 0.20 mm.

FIGURE 24 in Description and chaetotaxic analysis of the larval instars of Hydrocanthus debilis Sharp, 1882 (Coleoptera: Noteridae)

FIGURE 24. Habitat of Hydrocanthus debilis Sharp, 1882: puddle in Iberá National Park, Corrientes Province, Argentina.

FIGURES 21–23. Hydrocanthus debilis Sharp, 1882 in Description and chaetotaxic analysis of the larval instars of Hydrocanthus debilis Sharp, 1882 (Coleoptera: Noteridae)

FIGURES 21–23. Hydrocanthus debilis Sharp, 1882, instar III, habitus: (21) dorsal aspect; (22) ventral aspect; (23) lateral aspect. Scale bar = 0.50 mm.

FIGURES 13–16. Hydrocanthus debilis Sharp, 1882, instar I in Description and chaetotaxic analysis of the larval instars of Hydrocanthus debilis Sharp, 1882 (Coleoptera: Noteridae)

FIGURES 13–16. Hydrocanthus debilis Sharp, 1882, instar I: (13) abdominal segment VIII, dorsal aspect; (14) abdominal segment VIII and urogomphi, ventral aspect; (15) urogomphi, dorsal aspect; (16) urogomphi, ventral aspect. Numbers and lowercase letters indicate primary setae and pores respectively. AB, abdominal segment VIII; U, urogomphus. Scale bars = 0.10 mm for Figs 13–14 and 0.04 mm for Figs 15–16.

FIGURE 6 in On Hydrocanthus Say, 1823 (Coleoptera: Noteridae): description of a new species, two new synonyms and a key to Brazilian species

FIGURE 6. Hydrocanthus species male left middle leg in dorsal view. a) Hydrocanthus levigatus, b) Hydrocanthus debilis, c) Hydrocanthus sharpi. Scale bar = 0.5 mm.

FIGURE 5 in On Hydrocanthus Say, 1823 (Coleoptera: Noteridae): description of a new species, two new synonyms and a key to Brazilian species

FIGURE 5. Hydrocanthus species male left mesofemur in dorsal view. a) Hydrocanthus levigatus, b) Hydrocanthus debilis, c) Hydrocanthus sharpi. Scale bar = 0.2 mm.

FIGURE 3 in On Hydrocanthus Say, 1823 (Coleoptera: Noteridae): description of a new species, two new synonyms and a key to Brazilian species

FIGURE 3. Prosternum, prosternal process and noterid platform (metaventrite + metacoxal process), depicting distribution of setae. a) Hydrocanthus sharpi male, b) Hydrocanthus sharpi female, c) Hydrocanthus socius male morphotype A, d) Hydrocanthus socius female morphotype A, e) Hydrocanthus socius male morphotype B, f) Hydrocanthus socius female morphotype B, g) Hydrocanthus marmoratus male morphotype A, h) Hydrocanthus marmoratus male morphotype B, i) Hydrocanthus marmoratus female morphotype A, j) Hydrocanthus marmoratus female morphotype B, k) Hydrocanthus zimmermanni sp. nov. male, l) Hydrocanthus zimmermanni sp. nov. female. Scale bar = 2 mm.

FIGURE 2 in On Hydrocanthus Say, 1823 (Coleoptera: Noteridae): description of a new species, two new synonyms and a key to Brazilian species

FIGURE 2. Prosternum, prosternal process and noterid platform (metaventrite + metacoxal process), depicting distribution of setae. a) Hydrocanthus ancus male, b) Hydrocanthus ancus female, c) Hydrocanthus debilis male, d) Hydrocanthus debilis female, e) Hydrocanthus guignoti male, f) Hydrocanthus guignoti female, g) Hydrocanthus levigatus male, h) Hydrocanthus levigatus female morphotype A, i) Hydrocanthus levigatus female morphotype B, j) Hydrocanthus paraguayensis male, k) Hydrocanthus paraguayensis female. Scale bar = 2 mm.

Figs. 17–20. Hydrocanthus sharpi, instar III. 17 in Morphology and Chaetotaxy of the Instars of Hydrocanthus sharpi Zimmermann, 1928 (Coleoptera: Noteridae)

Figs. 17–20. Hydrocanthus sharpi, instar III. 17) Head, dorsal aspect; 18) Left prothoracic leg, anterior aspect; 19) Right prothoracic leg, posterior aspect; 20) Abdominal segment VIII, dorsal aspect. Numbers and lowercase letters indicate primary setae and pores, respectively. Scale bars = 0.20 mm.

Figs. 21–23 in Morphology and Chaetotaxy of the Instars of Hydrocanthus sharpi Zimmermann, 1928 (Coleoptera: Noteridae)

Figs. 21–23. Hydrocanthus sharpi, instar III, dorsal, ventral, and lateral habitus, respectively. Scale bar =

Figs. 1–3. Hydrocanthus sharpi, instar I. 1 in Morphology and Chaetotaxy of the Instars of Hydrocanthus sharpi Zimmermann, 1928 (Coleoptera: Noteridae)

Figs. 1–3. Hydrocanthus sharpi, instar I. 1) Dorsal habitus; 2–3) Cephalic capsule, dorsal and ventral aspects, respectively. Numbers and lowercase letters indicate primary setae and pores, respectively. EB = egg burster; FR = frontoclypeus; PA = parietal; TP = tentorial pit. Scale bars = 0.50 mm for Fig. 1; 0.10 mm for Figs. 2–3.

Figs. 13–16. Hydrocanthus sharpi, instar I. 13 in Morphology and Chaetotaxy of the Instars of Hydrocanthus sharpi Zimmermann, 1928 (Coleoptera: Noteridae)

Figs. 13–16. Hydrocanthus sharpi, instar I. 13) Abdominal segment VIII, dorsal aspect; 14) Abdominal segment VIII and urogomphi, ventral aspect; 15–16) Urogomphi, dorsal and ventral aspects, respectively. Numbers and lowercase letters indicate primary setae and pores, respectively. AB = abdominal segment VIII; UR = urogomphus. Scale bars = 0.10 mm for Figs. 13–14; 0.02 mm for Figs. 15–16.

Figs. 11–12. Hydrocanthus sharpi, instar I. 11 in Morphology and Chaetotaxy of the Instars of Hydrocanthus sharpi Zimmermann, 1928 (Coleoptera: Noteridae)

Figs. 11–12. Hydrocanthus sharpi, instar I. 11) Left metathoracic leg, anterior aspect; 12) Right metathoracic leg, posterior aspect. Numbers and lowercase letters indicate primary setae and pores, respectively. Additional setae not labeled. CO = coxa; FE = femur; PT = pretarsus; TA = tarsus; TI = tibia; TR = trochanter. Scale bar = 0.10 mm.