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46 results for “Trachymyrmex”
FIGURE 14 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 14: Trachymyrmex pomonae Paratype male in (a) lateral, (b) full face and (c) dorsal view. Scale bar represents 1 mm, 0.5 mm and 1 mm in part (a), (b) and (c), respectively.
FIGURE 15 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 15: Trachymyrmex septentrionalis worker in (a) lateral, (b) full face and (c) dorsal view. Scale bar represents 1 mm, 0.5 mm and 1 mm in part (a), (b) and (c), respectively.
FIGURE 11 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 11: Trachymyrmex nogalensis queen in (a) lateral, (b) full face and (c) dorsal view. Scale bar represents 2 mm, 0.5 mm and 1 mm in part (a), (b) and (c), respectively.
FIGURE 10 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 10: Trachymyrmex nogalensis worker in (a) lateral, (b) full face and (c) dorsal view. Scale bar represents 1 mm in each part of the figure.
FIGURE 4 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 4: Trachymyrmex carinatus male in (a) lateral, (b) full face and (c) dorsal view. Scale bar represents 1 mm, 0.5 mm and 1 mm in part (a), (b) and (c), respectively.
FIGURE 6 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 6: Trachymyrmex desertorum queen in (a) lateral, (b) full face and (c) dorsal view. Scale bar represents 1 mm, 0.5 mm and 1 mm in part (a), (b) and (c), respectively.
FIGURE 3 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 3: Trachymyrmex carinatus worker in (a) lateral, (b) full face and (c) dorsal view. Scale bar represents 1 mm, 0.5 mm and 1 mm in part (a), (b) and (c), respectively.
FIGURES 15–18 in Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)
FIGURES 15–18. Scanning electron micrograph of Trachymyrmex ixyodus, paratype worker from Brazil, AM: Manaus. 15. Head in frontal view. 16. Mesosoma and waist in lateral view. 17. Mesosoma in dorsal view. 18. Waist and gaster in dorsal view. All scale bars = 250 μm.
FIGURES 27–28 in Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)
FIGURES 27–28. Gynes of Trachymyrmex zeteki from Ecuador, Pichincha, Rio Palenque. 27. Head in frontal view. 28. Mesosoma and metasoma in lateral view. Scale bar = 1000 μm.
FIGURES 19–22 in Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)
FIGURES 19–22. Scanning electron micrograph of Trachymyrmex jamaicensis, worker from USA: Florida, Marathon. 19. Head in frontal view. 20. Mesosoma and waist in lateral view. 21. Mesosoma, waist and gaster in dorsal view. 22. Waist and gaster in dorsal view. All scale bars = 250 μm.
FIGURES 9–12 in Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)
FIGURES 9–12. Scanning electron micrograph of Trachymyrmex isthmicus, worker from Colombia, Valle, Andaluzia. 9. Head in frontal view; scale bar = 250 μm. 10. Mesosoma in lateral view; scale bar = 250 μm. 11. Habitus in dorsal view; scale bar = 500 μm. 12. Waist and gaster in dorsal view; scale bar = 250 μm.
FIGURES 5–8 in Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)
FIGURES 5–8. Scanning electron micrograph of Trachymyrmex haytianus, paralectotype worker from Haiti, Pettionville. 5. Head in frontal view; scale bar = 500 μm. 6. Mesosoma and waist in lateral view; scale bar = 500 μm. 7. Mesosoma in dorsal view; scale bar = 500 μm. 8. Waist and gaster in dorsal view; scale bar = 250 μm.
FIGURES 13–14 in Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)
FIGURES 13–14. Gyne of Trachymyrmex isthmicus from Ecuador, Pichincha, Rio Palenque. 13. head in frontal view. 14. Mesosoma and metasoma in lateral view. Scale bar = 1000 μm.
FIGURES 23–26 in Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)
FIGURES 23–26. Scanning electron micrograph of Trachymyrmex zeteki, worker from Panama, Canal Zone, Barro Colorado. 23. Head in frontal view; scale bar = 250 μm. 24. Mesosoma in lateral view; scale bar = 250 μm. 25. Mesosoma in dorsal view; scale bar = 250 μm. 26. Waist and gaster in dorsal view; scale bar = 500 μm.
FIGURES 1–4 in Revisionary studies on the attine ant genus Trachymyrmex Forel. Part 3: The Jamaicensis group (Hymenoptera: Formicidae)
FIGURES 1–4. Scanning electron micrograph of Trachymyrmex atlanticus, paratype worker from Brazil, RJ: Restinga da Marambaia. 1. Head in frontal view; scale bar = 500 μm. 2. Mesosoma and waist in lateral view; scale bar = 500 μm. 3. Waist in lateral view (detail); scale bar = 125 μm. 4. Postpetiole and gaster in dorsal view; scale bar = 250 μm.
Trachymyrmex ant and Leucocoprinus fungus genotypes
<p>Over the past few decades, large-scale phylogenetic analyses of fungus-gardening ants and their symbiotic fungi have depicted strong concordance among major clades of ants and their symbiotic fungi, yet within clades, fungus sharing is widespread among unrelated ant lineages. Sharing has been explained using a diffuse coevolution model within major clades. Understanding horizontal exchange within clades has been limited by conventional genetic markers that lack both interspecific and geographic variation. To examine whether reports of horizontal exchange were indeed due to symbiont sharing or the result of employing relatively uninformative molecular markers, samples of <i>Trachymyrmex arizonensis</i> and <i>Trachymyrmex pomonae</i> and their fungi were collected from native populations in Arizona and genotyped using conventional marker genes and genome-wide single nucleotide polymorphisms (SNPs). Conventional markers of the fungal symbionts generally exhibited cophylogenetic patterns that were consistent with some symbiont sharing, but most fungal clades had low support. SNP analysis, in contrast, indicated that each ant species exhibited fidelity to its own fungal subclade with only one instance of a colony growing a fungus that was otherwise associated with a different ant species. This evidence supports a pattern of codivergence between <i>Trachymyrmex</i> species and their fungi, and thus a diffuse coevolutionary model may not accurately predict symbiont exchange. These results suggest that fungal sharing across host species in these symbioses may be less extensive than previously thought.</p>
Trachymyrmex ant and Leucocoprinus fungus genotypes
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FIGURE 24 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 24: Distribution of (a) T. septentrionalis, (b) T. smithi and (c) T. turrifex.
FIGURE 23 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 23: Distribution of (a) T. jamaicensis, (b) T. nogalensis and (c) T. pomonae.
FIGURE 22 in A review of the North American species of the fungus-gardening ant genus Trachymyrmex (Hymenoptera: Formicidae)
FIGURE 22: Distribution of (a) T. arizonensis, (b) T. carinatus and (c) T. desertorum.
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