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Fig. 1 in From incidental findings to systematic discovery: locating and monitoring a new population of the endangered Harlequin Toad

Fig. 1 Location and boundaries of the Alexander Skutch Biological Corridor (ASBC) in the province of San José, Costa Rica.

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Fig. 3 in From incidental findings to systematic discovery: locating and monitoring a new population of the endangered Harlequin Toad

Fig. 3 Males, females, and juveniles of Atelopus varius found in the Alexander Skutch Biological Corridor. (A) Male found during February surveys. (B) Sleeping male in the leaf litter in the same location of a male in Fig. 2(A). (C) and (E) are juveniles high above the river bank, at least 3–4 m high in the vegetation of the understory, and juvenile (C) is sleeping. (D) A female Harlequin Toad sleeping on the vegetation five m above the river.

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Fig. 2 in From incidental findings to systematic discovery: locating and monitoring a new population of the endangered Harlequin Toad

Fig. 2 Detail of Atelopus varius individuals found during February and June 2017 in the ASBC. The left column includes males; the right column includes females. Males (B) and (C) were photographed as found, as were females (E), (G), and (H). Note the spread-out basking position of female (G).

Fig. 4 in Insights into the natural history of the endemic Harlequin Toad, Atelopus laetissimus Ruiz-Carranza, Ardila-Robayo, and Hernández-Camacho, 1994 (Anura: Bufonidae), in the Sierra Nevada de Santa Marta, Colombia

Fig. 4. Habitat suitability estimate (upper left panel), minimum convex polygon of extent of occurrence (EEO, upper right panel), and area of occupation (AOO, lower left panel) of Atelopus laetissimus. The total deforested area for the analyzed period and species occurrence locations are provided in red.

Figure 3 in Insights into the natural history of the endemic Harlequin Toad, Atelopus laetissimus Ruiz-Carranza, Ardila-Robayo, and Hernández-Camacho, 1994 (Anura: Bufonidae), in the Sierra Nevada de Santa Marta, Colombia

Figure 3. Acoustic repertoire of the advertisement call of Atelopus laetissimus. Conventional pulsed call (A), unpulsed short call (B), partially pulsed short call (C), pulsed short call (D), partially pulsed short call before pulsed call (E), and partially pulsed short call within pulsed call (F). The corresponding author will provide tables of raw data for individual specimens on request.

Fig. 2 in Insights into the natural history of the endemic Harlequin Toad, Atelopus laetissimus Ruiz-Carranza, Ardila-Robayo, and Hernández-Camacho, 1994 (Anura: Bufonidae), in the Sierra Nevada de Santa Marta, Colombia

Fig. 2. Temporal variation of the number of recaptures (A) and movement patterns (B) of Atelopus laetissimus.

Fig. 1 in Insights into the natural history of the endemic Harlequin Toad, Atelopus laetissimus Ruiz-Carranza, Ardila-Robayo, and Hernández-Camacho, 1994 (Anura: Bufonidae), in the Sierra Nevada de Santa Marta, Colombia

Fig. 1. (A) Temporal variation of relative abundance (ind/[h × obs]). (B) Population density (m2) per habitat of Atelopus laetissimus. Roman numerals represent the months of the surveys.

Fig. 5 in Insights into the natural history of the endemic Harlequin Toad, Atelopus laetissimus Ruiz-Carranza, Ardila-Robayo, and Hernández-Camacho, 1994 (Anura: Bufonidae), in the Sierra Nevada de Santa Marta, Colombia

Fig. 5. Estimated annual habitat loss for Atelopus laetissimus in the last decade in the potential distribution (A), area of occurrence (AOO, B), and extent of occurrence (EOO, C).

Figure 8 in Is there a chance for conservation breeding? Ex situ management, reproduction, and early life stages of the Harlequin toad Atelopus flavescens Duméril & Bibron, 1841 (Amphibia: Anura: Bufonidae)

Figure 8. Individual recognition of a male Atelopus flavescens based on color pattern, but note the change in color (photographs taken 12 July 2009 and 31 July 2011, respectively). Photographs by D. Karbe.

Figure 7 in Is there a chance for conservation breeding? Ex situ management, reproduction, and early life stages of the Harlequin toad Atelopus flavescens Duméril & Bibron, 1841 (Amphibia: Anura: Bufonidae)

Figure 7. Color patterns of Atelopus flavescens at the amphibian breeding unit at the Cologne Zoo: Four females (above) and males (below) in ventral and dorsal views. Photographs by D. Karbe.

Figure 6 in Is there a chance for conservation breeding? Ex situ management, reproduction, and early life stages of the Harlequin toad Atelopus flavescens Duméril & Bibron, 1841 (Amphibia: Anura: Bufonidae)

Figure 6. Total length (mm) of larger tadpole of Atelopus flavescens from first clutch in relation to age in days; water temperature 22-24 °C.

Figure 4 in Is there a chance for conservation breeding? Ex situ management, reproduction, and early life stages of the Harlequin toad Atelopus flavescens Duméril & Bibron, 1841 (Amphibia: Anura: Bufonidae)

Figure 4. Hatched larvae of Atelopus flavescens (from first egg deposition): (A) - (B) hatchlings at Gosner stage 20 (13 December 2010), (C) lateral view of tadpole at stages 24-25 (27 December 2010, 22 days after egg deposition), (D) ventral view of tadpole at stage 25 (3 January 2011, 29 days after egg deposition). Photographs by D. Karbe.

Figure 3 in Is there a chance for conservation breeding? Ex situ management, reproduction, and early life stages of the Harlequin toad Atelopus flavescens Duméril & Bibron, 1841 (Amphibia: Anura: Bufonidae)

Figure 3. First clutch of Atelopus flavescens at the amphibian breeding unit at the Cologne Zoo: (A) freshly deposited spawn under water surface on stones or filamentous algae (5 to 6 December 2010), (B) cream-colored eggs one day after deposition (6 December 2010), (C) developing embryos at Gosner stage <18 (9 December 2010), (D) embryos at stage 19 (10 December 2010). Photographs by D. Karbe.

Figure 2 in Is there a chance for conservation breeding? Ex situ management, reproduction, and early life stages of the Harlequin toad Atelopus flavescens Duméril & Bibron, 1841 (Amphibia: Anura: Bufonidae)

Figure 2. Atelopus flavescens at the amphibian breeding unit at the Cologne Zoo: (A) adult male, (B) calling male, and (C) couple in amplexus. Photograph (A) (B) by T. Ziegler and (C) by D. Karbe.

Figure 1 in Is there a chance for conservation breeding? Ex situ management, reproduction, and early life stages of the Harlequin toad Atelopus flavescens Duméril & Bibron, 1841 (Amphibia: Anura: Bufonidae)

Figure 1. Atelopus flavescens terraria in the amphibian breeding unit at the Cologne Zoo from different perspectives (A) - (D); both terraria have artificial streams in the foreground. Photographs by D. Karbe.

Figure 5 in Is there a chance for conservation breeding? Ex situ management, reproduction, and early life stages of the Harlequin toad Atelopus flavescens Duméril & Bibron, 1841 (Amphibia: Anura: Bufonidae)

Figure 5. Tadpoles of Atelopus flavescens: (A) ventral view of larva at Gosner stage 28 (22 February 2011, 79 days after egg deposition; from first clutch; larger larva), (B) lateral view of tadpole at stages 34-36 (22 April 2011, 96 days after egg deposition; from second clutch), (C) ventral view of tadpole at stage 41 (26 April 2011, 100 days after egg deposition; from second clutch), (D) tadpole at stage 42 (15 April 2011, 131 days after egg deposition; smaller larva). Photographs by D. Karbe.