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Figure 6 in Two unusual new species of Caleremaeus (Acari: Oribatida) from eastern North America, with redescription of C. retractus and reevaluation of the genus

Figure 6 Caleremaeus retractus(Banks), juveniles: A – protonymph, dorsal view; B – deutonymph, lateral view, with smaller setae omitted from larval (SLa)and protonymphal (SPn) scalps. Dots indicate that seta is on exuvial scalp (one for larval, two for protonymphal). Scale bars: 50 µm (B); 10 µm (A).

Figure 4 in Two unusual new species of Caleremaeus (Acari: Oribatida) from eastern North America, with redescription of C. retractus and reevaluation of the genus

Figure 4 Caleremaeus retractus(Banks), legs of adult (abaxial aspect, trochanter omitted from I, II): A – leg I; B – leg II; C – leg IV. Scale bar: 20 µm.

Figure 5 in Two unusual new species of Caleremaeus (Acari: Oribatida) from eastern North America, with redescription of C. retractus and reevaluation of the genus

Figure 5 Caleremaeus retractus(Banks), transmitted-light micrographs of near-topotypical adults: A – legs I-IV, abaxial view (trochanters I, II not shown); B – trochanter and base of femur IV, mid-depth focus; C – same, deeper focus; D – partial leg III, with enlarged femoral seta d (upper left insert, arrow to basal cerotegument nodule) and tibial solenidionφ (upper right insert); E – left gena and rutellum, ventral view (removed from subcapitulum); F – chelicera, adaxial view; G – egg removed from oviduct. Scale bars: 20 µm (A, G); 10 µm (B-D, F); 5 µm (E).

Figure 8 in Two unusual new species of Caleremaeus (Acari: Oribatida) from eastern North America, with redescription of C. retractus and reevaluation of the genus

Figure 8 Caleremaeus arboricolusn. sp., adult: A – dorsal view (legs mostly omitted); B – ventral view (legs omitted). Scale bar: 50 µm.

Figure 1 in Two unusual new species of Caleremaeus (Acari: Oribatida) from eastern North America, with redescription of C. retractus and reevaluation of the genus

Figure 1 Caleremaeus retractus(Banks), adult: A – dorsal view (legs mostly omitted); B – lateral view (gnathosoma, legs and anal, genital plates omitted); C – subcapitulum, ventral view (adoral lips and palps omitted); D – palp, abaxial view. Scale bars: 50 µm (A, B); 10 µm (C, D).

Figure 2 in Two unusual new species of Caleremaeus (Acari: Oribatida) from eastern North America, with redescription of C. retractus and reevaluation of the genus

Figure 2 Caleremaeus retractus(Banks), transmitted-light micrographs of near-topotypical adults: A – dorsolateral view; B – posterior view; C – cerotegument separated from notogaster, lateral view; D – same, dorsal view (face-on); E – bothridium and bothridial seta (head face-on); F – optical sections of bothridium; upper image focused fine circular striations of inner chamber, lower image on longitudinal striations of deepest part of inner chamber; G – anterior region of prodorsum, dorsal view (insert = enlargement of seta le, arrow to break in seta emphasizing surrounding cerotegument nodule); H – same, different specimen, showing cusp variation; I – anterior region of specimen in G, deeper focus showing rostral bulge and submarginal crest; J – prodorsum, dorsolateral view (gnathosoma removed; setaele and ro represented only by birefringent core); K – specimen in J, deeper focus on rostral bulge (arrowhead to transverse striae of embossed pattern on inner surface of rostral bulge; L – rostral region of dissected specimen, anterior view (black arrow to central ridge of embossed pattern on inner face of rostral bulge); M – parasagittal section of prodorsum and anterior hysterosoma (insert = enlarged base of rostral bulge and rostrophragma). Scale bars: 50 µm (A, B); 20 µm (J, M); 10 µm (E, G-I, K, L); 5 µm (C, D, F).

Figure 9 in Two unusual new species of Caleremaeus (Acari: Oribatida) from eastern North America, with redescription of C. retractus and reevaluation of the genus

Figure 9 Caleremaeus arboricolusn. sp., transmitted-light micrographs of adult: A – anterior third, dorsal view; B – transverse ridge and setae le; C – same, different specimen; D – bothridium and setabs; E – posterolateral area of prodorsum, dorsal view; F – head of bothridial seta; G – prodorsum, lateral view; H – same, deep focus optical section (insert on left = enlarged base of rostral bulge and rostrophragma); I – middle third of body, lateral view; J – notogastral seta h2; K – notogastral seta lp; L – notogastral setae p1 and p3; M – posterior view (setae h1, p1 broken from alveolus). Scale bars: 20 µm (A, G-I, M); 10 µm (B, C); 5 µm (D-F, J-L).

Figure 7 in Two unusual new species of Caleremaeus (Acari: Oribatida) from eastern North America, with redescription of C. retractus and reevaluation of the genus

Figure 7 Caleremaeus retractus(Banks), transmitted-light micrographs of near-topotypical juveniles: A – protonymph, dorsal view (setae h1 incomplete); B – same, lateral view of posterior hysterosoma; C – deutonymph, lateral view of hysterosoma; D – tritonymph, dorsal view (insert = right lamellar seta and cusp); E – same, lateral view of hysterosoma; F – tritonymph, ventral view of prodorsal margin and partial gnathosoma (upper right insert = enlarged seta ro); G – gastronotic cornicle of tritonymph (scalps removed); H – bothridial seta of deutonymph; I – gastronotal seta lm from tritonymph (arrow to basal cerotegument nodule); J – same, but seta h2; K – same, but seta p2; L – dorsodistal process of tibia I, tritonymph, distal to left (φ1 rising out of focus; insert = opposite side of seta d, showing faint barbs); M – tibia, genu and distal part of femur I from tritonymph, adaxial view; N – coupled seta d and solenidion on tibia II (distal to left). Dots in B, C, E indicate that labeled seta (or its insertion) is on exuvial scalp of larva (.), protonymph (..) or deutonymph (…). Scale bars: 50 µm (D); 20 µm (A-C, E); 10 µm (M); 5 µm (F-H, L, N); 2 µm (I-K).

Figure 2 in New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Figure 2 Arrenurus rotundus (Daday), male. A – dorsum; B – venter; C – palp; D – palp. Arrenurus minimus (Daday), female, Rio Cuminá, Brazil, slide 7343 Viets coll. (slide 43137 SMF). E – palp. Scale bars: A, B = 100 µm, C-E = 50 µm.

Figure 9 Arrenurus surinamensis n in New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Figure 9 Arrenurus surinamensis n. sp., A-D holotype male, E paratype female. A – dorsum; B – venter; C – left palp; D – right palp; E – venter. Scale bars: A-B = 100 µm, C-D = 50 µm.

Figure 6 Arrenurus mansoensis n in New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Figure 6 Arrenurus mansoensis n. sp., holotype male. A – dorsum; B – venter; C – palp. Scale bars: A, B = 100 µm, C = 50 µm.

Figure 5 Arrenurus ludificator Koenike, A-D male, E female. A in New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Figure 5 Arrenurus ludificator Koenike, A-D male, E female. A – dorsum; B – venter; C – lateral view; D – palp; E – venter. Scale bars: A-C, E = 200 µm, D = 50 µm.

Figure 8 Arrenurus stagnalis n in New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Figure 8 Arrenurus stagnalis n. sp., A-D holotype male, E paratype female. A – dorsum; B – venter; C – lateral view (not all details shown); D – palp; E – venter. Scale bars: A-C = 100 µm, D = 50 µm, E = 200 µm.

Figure 11 Arrenurus tenuicollis lacustris n. subsp. A-D holotype male, E paratype female. A in New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Figure 11 Arrenurus tenuicollis lacustris n. subsp. A-D holotype male, E paratype female. A – dorsum; B – venter; C – detail of cauda; D – palp; E – venter. Scale bars: A-B, E = 200 µm, C = 100 µm; D = 50 µm.

Figure 10 Arrenurus tempelmani n in New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Figure 10 Arrenurus tempelmani n. sp., holotype male. A – dorsum; B – venter; C – lateral view; D – palp. Scale bars: A-C = 200 µm, D = 50 µm.

Figure 3 Arrenurus consanguineus K. Viets, male. A in New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Figure 3 Arrenurus consanguineus K. Viets, male. A – dorsum; B – venter; C – palp. Scale bars: A-B = 100 µm, C = 50 µm.

Figure 7 Arrenurus niger n in New records of the water mite genus Arrenurus Dugès, 1834 from South America (Acari: Hydrachnidia: Arrenuridae), with the description of five new species and one new subspecies

Figure 7 Arrenurus niger n. sp. A-E holotype male, F paratype female. A – dorsum; B – venter; C – right palp; D – left palp (segments rotated); E – IV-leg-6; F = venter. Scale bars: A-B, F = 100 µm, C-E = 50 µm.

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Figs 12–16 in New records of Platynectes (s. str.) diving beetles from South America with description of two new species (Coleoptera: Dytiscidae: Agabinae)

Figs 12–16. Distribution of Platynectes 'Clade II' sensu TƟUඌඌΑιΝτ et al. (2017) in South America. Circles represent previously published localities; stars represent localities newly reported in this paper.

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Figs 2–5 in New records of Platynectes (s. str.) diving beetles from South America with description of two new species (Coleoptera: Dytiscidae: Agabinae)

Figs 2–5. Dorsal habitus images of Platynectes spp. 2 – P. bicolor sp. nov.; 3 – P. colombicus sp. nov.; 4 – P. ornatifrons Sharp, 1882, syntype; 5 – P. parananus Sharp, 1882, holotype.