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Figure 1 from: Tran BTT, Tran HTX, Bonato L (2019) A new soil centipede from South-East Asia with a unique arrangement of ventral glands, and a revised synopsis of Gonibregmatidae (Chilopoda, Geophilomorpha). ZooKeys 838: 111-132. https://doi.org/10.3897/zookeys.838.33131

Figure 1 Vinaphilusunicus gen. n. sp. n., holotype A anterior part of the body, dorsal view B anterior part of the body, ventral view C posterior part of the body, dorsal view.

Figure 3 from: Tran BTT, Tran HTX, Bonato L (2019) A new soil centipede from South-East Asia with a unique arrangement of ventral glands, and a revised synopsis of Gonibregmatidae (Chilopoda, Geophilomorpha). ZooKeys 838: 111-132. https://doi.org/10.3897/zookeys.838.33131

Figure 3 Vinaphilusunicus gen. n. sp. n., holotype A First maxillae, ventral view after dissection B left telopodite of second maxillae, ventral view after dissection C sternites of selected leg-bearing segments (indicated by numbers), simplified drawings of pore-fields D ultimate leg-bearing segment and postpedal segments, ventral view.

Figure 4 from: Tran BTT, Tran HTX, Bonato L (2019) A new soil centipede from South-East Asia with a unique arrangement of ventral glands, and a revised synopsis of Gonibregmatidae (Chilopoda, Geophilomorpha). ZooKeys 838: 111-132. https://doi.org/10.3897/zookeys.838.33131

Figure 4 Vinaphilusunicus gen. n. sp. n., holotype. Pore-fields of leg-bearing segment 10, ventral view.

Figure 2 from: Tran BTT, Tran HTX, Bonato L (2019) A new soil centipede from South-East Asia with a unique arrangement of ventral glands, and a revised synopsis of Gonibregmatidae (Chilopoda, Geophilomorpha). ZooKeys 838: 111-132. https://doi.org/10.3897/zookeys.838.33131

Figure 2 Vinaphilusunicus gen. n. sp. n., holotype A head and forcipular segment, dorsal view B clypeus and labrum, ventral view after removal of forcipules and maxillae C left mandible, dorsal view after extraction D left mandible, anterior view after extraction E forcipular segment, ventral view after removal of head.

Figures 1-2 from: Brito P, Targueta C, Arruda W, Santos F, Bastos R (2019) The sexual dimorphic inguinal glands of the frog species Ololygon centralis (Anura: Hylidae) at light and transmission electron microscopy. Zoologia 36: 1-9. https://doi.org/10.3897/zoologia.36.e29356

Figures 1-2 Photographs of the lateral sides of a O.centralis male (1) and female (2). The dashed line marks the limit of the inguinal gland in males that are absent in females. Scale bars: 1 mm.

Figures 11-15 from: Brito P, Targueta C, Arruda W, Santos F, Bastos R (2019) The sexual dimorphic inguinal glands of the frog species Ololygon centralis (Anura: Hylidae) at light and transmission electron microscopy. Zoologia 36: 1-9. https://doi.org/10.3897/zoologia.36.e29356

Figures 11-15 Electron micrographs of the serous glands of the inguinal region. (11) Low magnification of the secretory syncytium with two visible nuclei (n) and also a sizeable cytoplasmic secretion aggregate (s). Notice the syncytium center (sc) filled with electron dense secretion and also the clear space (*) between syncytium basis and myoepithelial cells (m). Around the myoepithelial cells are some collagen fibrils (co). (12–13) Medium magnification of syncytium, where it is possible to notice some cytoplasmic secretion aggregate (s) and some regions of the cytoplasm with medium electron density (c). (14–15) Major magnifications of two large cytoplasmic secretion aggregate, with mixed portions of electron dense secretion (s) with medium electron density cytoplasm (c). (p) basal digitiform projections; (rer) rough endoplasmic reticulum. Sacale bars: 14, 15 = 1 μm, 12, 13 = 3 μm, 11 = 5 μm.

Figures 3-10 from: Brito P, Targueta C, Arruda W, Santos F, Bastos R (2019) The sexual dimorphic inguinal glands of the frog species Ololygon centralis (Anura: Hylidae) at light and transmission electron microscopy. Zoologia 36: 1-9. https://doi.org/10.3897/zoologia.36.e29356

Figures 3-10 Photomicrographs of histological sections of the male inguinal gland region of O.centralis. (3–6, 8) Histological sections stained with HE. 3) Section of skin from the peripherical region of the inguinal gland. Notice that only mucous glands are present. 4) Low magnification micrograph showing the presence of many syncytial glands (g), with arrows indicating the lateral limits of the inguinal gland. (4–6) Major magnifications of the glandular apical portion, with many melanocytes (m), mucous glands (mc) and myoepithelial cells (open arrows). Note the glandular ducts (dc). 7) Histological section submitted to PAS reaction. Notice that only some cells of the mucous glands (mc) exhibit a positive reaction (arrowheads). (8) Major magnification of the lateral base portion of the syncytium, with colloidal secretion (s) in syncytium cytoplasm. Note also a blood vessel in the connective tissue. (9) Methacrylate section treated with potassium permanganate and oxalic acid and stained with Nile blue. Notice the bleached melanocytes (m) and some syncytial cytoplasmic projections (*) through the glandular secretion (s). (10) Methacrylate section stained with toluidine blue. Notice the pale blue color of the secretion suggesting it is alkaline, contrasting with the dark blue color of the glandular syncytium (gs). (e) epidermis; (d) dermis; (black open arrow) myoepithelial cells; (c) blood cells. Scale bars: 5, 6, 8 = 10 μm, 3, 7, 9, 10 = 20 μm; 4 = 200 μm.

Figures 16-18 from: Brito P, Targueta C, Arruda W, Santos F, Bastos R (2019) The sexual dimorphic inguinal glands of the frog species Ololygon centralis (Anura: Hylidae) at light and transmission electron microscopy. Zoologia 36: 1-9. https://doi.org/10.3897/zoologia.36.e29356

Figures 16-18 (16) The basal portion of the syncytium with digitiform projections (p) and the clear space (*) between them and the myoepithelial cells. Notice the myoepithelial cells nuclei (n) and the collagen fibrils. (17) Detail of the connective tissue between two neighbor alveoli, with myoepithelial cells (m) and collagen fibrils (c). (18) The basal portion of a syncytium with intricate projection labyrinth. Notice the syncytium nucleus with irregular outline (n). Scale bars: 18 = 1 μm, 16, 17 = 3 μm.

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Figures 9-12 in Ultrastructural detection of lipids in the cephalic salivary glands of Apis mellifera and Scaptotrigona postica (Hymenoptera: Apidae) workers

Figures 9-12. Detection of lipid by imidazole osmium (IO) in cells from the cephalic salivary glands of Scaptotrigona postica. (9) Gland cell from newly emerged (NE) and (10) worker working in the brood comb area (CA) showing vesicles containing heterogeneous material (vh) in the apical region. Mitochondria (m) are abundant and variable in electron density and shape. Note the droplets (arrow), smooth endoplasmic reticulum cisterns (rel) and some mitochondria showing IO-positive lipid content inside (ml). (11-12) Glandular cells from forager (FO) workers. (11) Cubic gland cells showing large lipid droplet (lip). (12) Gland cells flattened with drop-shaped lipid vesicles (lip) and heterogeneous vesicles (vh). Note the large alveolar lumen (l) accumulating secretion (s). (c) Cuticle, (m) mitochondrion, (n) nucleus, (s) secretion. Scale bars: 9 = 1 µm, 10, 12 = 2 µm, 11 = 3 µm.

Fig. 22. Planaltina myersi, MNRJ 10634, a in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)

Fig. 22. Planaltina myersi, MNRJ 10634, a mature male (below), 32.5 SL and a female (above) 36.8 mm SL, Brazil: Distrito Federal, córrego Fumal, where crosses road between Brasília and Planaltina, near Planaltina, about 15°20'S 47°50'W, collected 11 Apr. 1982 by L. E. de Macedo Cardoso. Note that the pale area on the anal fin of the male is where the anal-fin hooks are concentrated and the whitish color is due to the presence of anal-fin club cells.

Fig. 21 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)

Fig. 21. Light micrographs through anal glandular tissue of mature male Bryconadenos tanaothoros. A, part of anal gland from a male of SL 36.6 mm (USNM 352061); bar, 100 µm. B, High magnification of the anal gland of a male of SL 39.8 mm (USNM 352061) in the area of cell release showing a degenerating cell (arrow) and a depression (*) remaining after cell release; bar, 10 µm.

Fig. 15 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)

Fig. 15. Light micrographs through gonads of Bryconadenos tanaothoros. A, mid-sagittal section through testis of mature male, SL 36.6 mm (USNM 352061); sg, spermatogonial region; arrows, spermatozeugmata within storage region of testis; bar, 200 µm. B, testis storage region of same specimen showing well-organized spermatozeugmata (z); bar, 20 µm. C, section through ovary of mature female, SL 34.4 mm (USNM 352061), showing spermatozoa (sp) within ovarian lumen; o, oocyte cytoplasm; bar, 10 µm.

Fig. 13. Knodus meridae, USNM 121469 in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)

Fig. 13. Knodus meridae, USNM 121469. Type species of Knodus, a non-inseminating species. Caudal-fin squamation. Male, SL 21.0 mm, lateral view left side, portraying scales extended out onto caudal-fin rays. Venezuela: Trujillo, lago Maracaibo basin, río Motáin, 4 km above Motáin.

Fig. 11. Cladogram depicting hypothesized relationships among Clade A in Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae)

Fig. 11. Cladogram depicting hypothesized relationships among Clade A characids as modified here from Malabarba and Weitzman (2003) with the addition of Bryconadenos shown as a sister group of Attonitus and the placement of genera with inseminating species as possibly more closely related to one another than to non-inseminating Clade A genera.

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Exploring the venom gland transcriptome of Bothrops asper and Bothrops jararaca: de novo assembly and analysis of novel toxic proteins

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FIG. 8 in A new species of Mantidactylus (subgenus Guibemantis) from Madagascar, with a comparative survey of internal femoral gland structure in the genus (Amphibia: Ranidae: Mantellinae)

FIG. 8. Preserved lectotype of Mantidactylus depressiceps, BMNH 1947.2.27.50. Scale: 20 mm.

FIG. 2 in A new species of Mantidactylus (subgenus Guibemantis) from Madagascar, with a comparative survey of internal femoral gland structure in the genus (Amphibia: Ranidae: Mantellinae)

FIG. 2. Holotype of Mantidactylus kathrinae in life, ZFMK 62264, ventral view.

FIG. 7 in A new species of Mantidactylus (subgenus Guibemantis) from Madagascar, with a comparative survey of internal femoral gland structure in the genus (Amphibia: Ranidae: Mantellinae)

FIG. 7. Preserved holotype of Mantidactylus tornieri, ZMB 30533. Scale: 20 mm.

FIG. 1 in A new species of Mantidactylus (subgenus Guibemantis) from Madagascar, with a comparative survey of internal femoral gland structure in the genus (Amphibia: Ranidae: Mantellinae)

FIG. 1. Holotype of Mantidactylus kathrinae in life, ZFMK 62264.