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FIGURE 53. Chaetozone shackletoni n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 53. Chaetozone shackletoni n. sp. SEMs of paratype, ANDEEP III Sta. 78-6 (MCZ 149853): A, anterior dorsal view; B, anterior end, right lateral view; C, pre-setigerous region, right lateral view (inset of nuchal organ, not to scale); D, posterior end, left lateral view; E, peristomium and setiger 1, right lateral view; F, setigers 1–4, right lateral view; G, detail of capillary notosetae; H, posterior neuroacicular spines and capillaries.
FIGURE 52. Chaetozone shackletoni n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 52. Chaetozone shackletoni n. sp. A, anterior two-thirds of worm photographed in life, left lateral view; B, posterior parapodium, left anterior view; C, entire worm photographed in life; D, anterior end, right lateral view. A, C–D, ANDEEP I, Sta. 105-5, paratypes (SMF 24936); B, USCG Glacier Sta. 69-20, paratype (USNM 1490776).
FIGURE 58 in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 58. Tharyx obtusus (Hartmann-Schröder & Rosenfeldt, 1990). A, anterior end, dorsal view; B, anterior end, left lateral view; C, posterior end, dorsal view; D, notosetae from posterior setiger; E, posterior notopodial spinous seta; F–H, short, curved hooked neurosetae from far posterior setiger. A, C–H, specimens from Sta. NBP-01 (LACM-AHF Poly 10231); B, holotype (ZMH P-19953).
FIGURE 24. Caulleriella fucata n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 24. Caulleriella fucata n. sp. A, anterior end, right lateral view; B, anterior end, dorsal view; C, posterior end, dorsal view; D, neuropodial hook. A, paratype (USNM 1913892); B–D holotype (USNM 1013891).
FIGURE 22. Caulleriella eltaninae n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 22. Caulleriella eltaninae n. sp. Holotype (USNM 1013888): A, anterior end, left lateral view; B, anterior end, dorsal view; C, posterior end, left lateral view; D, neuropodial hook and capillary seta.
FIGURE 18. Aphelochaeta spectabilis n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 18. Aphelochaeta spectabilis n. sp. Photomicrographs of specimens from the EASIZ II Sta. 48-299 (SMF 24897): A, anterior end, dorsal view; B–C, posterior ends, dorsal view of two different specimens; D–G, two specimens showing anterior ends, in ventrolateral, (D) dorsal (E), right lateral (F), and ventral (G) views exhibiting Methyl Green staining patterns. A–C stained with Shirlastain A; D–G stained with Methyl Green. All scales 500 µm.
FIGURE 2. Aphelochaeta aubreyi n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 2. Aphelochaeta aubreyi n. sp. Anterior end, dorsal view, paratype (USNM 1490702); B, anterior end, left lateral view, paratype (LACM-AHF Poly 10201); C, posterior end, left lateral view paratype, (MCZ 149879).
FIGURE 5. Aphelochaeta bimaculata n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 5. Aphelochaeta bimaculata n. sp. A–B, paratype (USNM 1490705): A, entire worm, ventrolateral view (pre-setiger region partially detached); B, detail of middle body segments (arrows denote location of pigment spots). C–D, holotype (USNM 1490704); C, anterior end, ventral view, with location of Methyl Green stain indicated (arrows); D, entire specimen, right lateral view. A–B, stained with Shirlastain A; C–D, stained with Methyl Green.
FIGURE 9. Aphelochaeta dearborni n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 9. Aphelochaeta dearborni n. sp. A, anterior end, dorsal view; B, anterior end, right lateral view; C, posterior end, left lateral view. A, C, Holotype (USNM 1013879); B, specimen from Sta. 48-325 (SMF 24882).
FIGURE 20. Caulleriella ecuadoriana n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 20. Caulleriella ecuadoriana n. sp. Holotype (USNM 1490723): A, anterior end, dorsal view; B, posterior end, left lateral view; C, neuropodial bidentate hook.
FIGURE 19. Caulleriella antarctica Hartman, 1978. A in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 19. Caulleriella antarctica Hartman, 1978. A, anterior end, left lateral view; B, anterior end, dorsal view; C, posterior end, dorsal view; D, posterior parapodium, left anterior view; E, posterior notopodial hooks; F, posterior neuropodial hooks. A–B, D–F, Holotype (USNM 46777); C, ANDEEP II, Sta. 133-6 (SMH 24907).
FIGURE 1 in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 1. Aphelochaeta antelonga Dean & Blake, 2016. Specimens from Valparaiso Bay, Chile: A, anterior and middle body segments in right lateral view; B, anterior end, left ventrolateral view; C, posterior end, ventrolateral view; D, anterior segments, L to R, with branchial scars; E, detail of capillary seta showing fibrils; F, anterior end, dorsal view. A–E, SEMs of specimens collected by E.H. Soto from Valparaiso Bay; F, photomicrograph of specimen from Eltanin Sta. 1437 (USNM 1490700) stained with Shirlastain A. Arrows denote location of weakly developed peristomial grooves revealed after staining.
FIGURE 4. Aphelochaeta bimaculata n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 4. Aphelochaeta bimaculata n. sp. A, paratype (USNM 1490705), anterior end, dorsal view; B, holotype (USNM 1490704), anterior end, right lateral view.
FIGURE 17. Aphelochaeta spectabilis n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 17. Aphelochaeta spectabilis n. sp. A, anterior end, dorsal view, specimen from EASIZ II, Sta. 299 (SMF 24897); B, anterior end, dorsal view of holotype, R/V Hero Sta. 824-5-1 (USNM 1490720); C, anterior end, dorsal view of small specimen, EASIZ II, Sta. 299 (SMF 24897); D, posterior end, left lateral view of holotype (USNM 1490719).
FIGURE 11. Aphelochaeta hormosa n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 11. Aphelochaeta hormosa n. sp. Holotype (USNM 1490710): A, anterior end, right lateral view; B, middle body segments, right lateral view; C, posterior end, dorsal view.
FIGURE 3. Aphelochaeta aubreyi n in Bitentaculate Cirratulidae (Annelida, Polychaeta) collected chiefly during cruises of the R/V Anton Bruun, USNS Eltanin, USCG Glacier, R/V Hero, RVIB Nathaniel B. Palmer, and R/V Polarstern from the Southern Ocean, Antarctica, and off Western South America
FIGURE 3. Aphelochaeta aubreyi n. sp. Photomicrographs of holotype (LACM-AHF Poly 10200): A, anterior end, left lateral view B, posterior end, right lateral view. Stained with Shirlastain A. Scales 500 µm.
FIGURES 9–14 in Mycomystes nigriventris sp. nov. (Coleoptera: Erotylidae: Tritomini) from South America, with insights into the genus Mycomystes Gorham
FIGURES 9–14. Mycomystes nigriventris sp. nov., male and female terminalia: (9–11) male paratype from Taim (Rio Grande do Sul, South Brazil). (9) apophyses (apo), flagellum (fla), penis (pen); (10) dorsal view of anterior portion of flagellum, head of penile flagellum (head), arrow showing the membranous portion between virga and head segments; (11) tegmen; (12) genital capsule, sternite VIII and tergite VIII of a male paratype from Triunfo (Rio Grande do Sul, South Brazil). (13–14) female genitalia of a paratype from Capão do Imbuia (Curitiba, Paraná, South Brazil). (14) arrows showing the elongate vagina. Scale bars: 9, 11 = 0.5 mm; 10, 14 = 0.1 mm; 12–13 = 0.2 mm.
FIGURES 1–8 in Mycomystes nigriventris sp. nov. (Coleoptera: Erotylidae: Tritomini) from South America, with insights into the genus Mycomystes Gorham
FIGURES 1–8. Mycomystes nigriventris sp. nov.: 1–4 holotype from Capão do Imbuia (Curitiba, Paraná, South Brazil). (1–3) habitus; (4) mouthparts, arrow showing the mentum. (5–8) mouthparts of a male paratype from Taim (Rio Grande do Sul, South Brazil). (5) left mandible; (6) right mandible, arrow showing the teeth at the inner edge; (7) maxillary (mp) and labial palpomeres (lp); (8) mentum plate. Scale bars: 1–3 = 1 mm; 4 = 0.5 mm; 5–6, 8 = 0.1 mm; 7 = 0.2 mm.
FIGURE 15 in Mycomystes nigriventris sp. nov. (Coleoptera: Erotylidae: Tritomini) from South America, with insights into the genus Mycomystes Gorham
FIGURE 15. Geographical distribution of Mycomystes nigriventris sp. nov. in South and Southeast Brazil.
Supplementary material 1 from: Smith RR, Short AEZ (2020) Review of the genus Chasmogenus Sharp, 1882 of northeastern South America with an emphasis on Venezuela, Suriname, and Guyana (Coleoptera, Hydrophilidae, Acidocerinae). ZooKeys 934: 25-79. https://doi.org/10.3897/zookeys.934.49359
Table S1. Pairwise uncorrected percentage similarity between ChasmogenusCOI sequences used in this study
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