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Here we give names to three new species of Paraburkholderia that can remain in symbiosis indefinitely in the spores of a soil dwelling eukaryote, Dictyostelium discoideum . The new species P. agricolaris sp. nov. , P. hayleyella sp. nov. , and P. bonniea sp. nov . are widespread across the eastern USA and were isolated as internal symbionts of wild-collected D. discoideum . We describe these sp. nov. using several approaches. Evidence that they are each a distinct new species comes from their phylogenetic position, average nucleotide identity, genome-genome distance, carbon usage, reduced length, cooler optimal growth temperature, metabolic tests, and their previously described ability to invade D. discoideum amoebae and form a symbiotic relationship . All three of these new species facilitate the prolonged carriage of food bacteria by D. discoideum, though they themselves are not food. Further studies of the interactions of these three new species with D. discoideum should be fruitful for understanding the ecology and evolution of symbioses.
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This content will become publicly available on February 20, 2026
A new species of Duckeanthidium Moure & Hurd (Megachilidae: Anthidiini) from Colombia, with notes on D. thielei Michener in Panama
A new species of the Neotropical genus Duckeanthidium Moure & Hurd is described and illustrated from the Amazon basin in Colombia. Duckeanthidium silvicola Guevara & Gonzalez, new species, is known from the female and exhibits intermediate features between the Central American species D. thielei Michener and the Amazonian species D. atropos (Smith). In addition, we report long-term observations on D. thielei from Panama for the first time, along with notes on nesting and sex ratio.
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- Award ID(s):
- 2101851
- PAR ID:
- 10656330
- Publisher / Repository:
- Journal of Melittology
- Date Published:
- Journal Name:
- Journal of Melittology
- Issue:
- 130
- ISSN:
- 2325-4467
- Page Range / eLocation ID:
- 1-7
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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