Ambrosia fungi are fungal

Fungus

A fungus is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds , as well as the more familiar mushrooms. These organisms are classified as a kingdom, Fungi, which is separate from plants, animals, and bacteria...

 symbionts of ambrosia beetles.

There are a few dozen described ambrosia fungi, currently placed in polyphyletic genera Ambrosiella, Rafaellea and Dryadomyces (all from Ophiostomatales

Ophiostomatales

The Ophiostomatales are an order of fungi within the class Sordariomycetes....

, Ascomycetes). Probably many more species remain to be discovered. Little is known about bionomy of ambrosia fungi, as well as about their specificity to ambrosia beetle species. Ambrosia fungi are thought to be dependent on transport and inoculation provided by their beetle symbionts, as they have not been found in any other habitat. All ambrosia fungi are probably asexual

Asexual reproduction

Asexual reproduction is a mode of reproduction by which offspring arise from a single parent, and inherit the genes of that parent only, it is reproduction which does not involve meiosis, ploidy reduction, or fertilization. A more stringent definition is agamogenesis which is reproduction without...

 and clonal

Clonal

Clonal may refer toin Immunology:*Clonal deletion, a process by which B cells and T cells are deactivated before act significantly upon specific antigens*Clonal selection theory, a model for how the immune system responds to infection...

.