Trigonoorda is a genus of moths belonging to the family Crambidae. Within this family, it is classified under the subfamily Odontiinae and the tribe Eurrhypini. The genus was formally established and described by the English entomologist Edward Meyrick in 1913.
The genus is primarily distributed within the Australasian region, with significant occurrences documented in Australia. Like other members of the family Crambidae, moths in the Trigonoorda genus are characterized by the presence of a well-developed proboscis and specialized hearing organs, known as tympana, located on the abdomen.
Taxonomic records identify several species within the genus, including:
- Trigonoorda gavisalis (Walker, 1869)
- Trigonoorda trygodes (Meyrick, 1913)
- Trigonoorda rhodoephippialis (Munroe, 1974)
The species Trigonoorda gavisalis was originally described by Francis Walker in 1869 and was later reassigned to this genus. While the classification and geographic range of Trigonoorda are established in entomological databases, there is limited available information regarding the specific life cycles, larval host plants, or ecological behaviors of these moths.