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Cauchas rufimitrella female.jpg
Cuckoo flower longhorn moth, Cauchas rufimitrella
Scientific classification

Monotrysia (Börner, 1939)

The Monotrysia are a group of insects in the lepidopteran order, which are not currently considered to be a natural group or clade. The group consists only of moths and most of these (apart from the recently discovered family Andesianidae)[1][2] are small and are relatively understudied (compared to the Ditrysia) in many regions of the world. The group is so named because the female has a single genital opening for mating and laying eggs, in contrast to the rest of the Lepidoptera (Ditrysia), which have two female reproductive openings.[3] They comprise all of the group Heteroneura but the Ditrysia.

See also[edit]


  1. ^ Davis, D. R. (1986). A new family of monotrysian moths from austral South America (Lepidoptera: Palaephatidae), with a phylogenetic review of the Monotrysia. Smithsonian Contributions to Zoology, 434: 1-202.
  2. ^ Davis, D. R. and Gentili, P. (2003). Andesianidae, a new family of monotrysian moths (Lepidoptera: Andesianoidea) from South America. Invertebrate Systematics, 17: 15-26.Abstract
  3. ^ Dugdale, J.S. (1974). Female genital classification in the classification of Lepidoptera. New Zealand Journal of Entomology, 1(2): 127-146. pdf[permanent dead link]

Further reading[edit]

  • Davis D. R. (1999). The Monotrysian Heteroneura. Pages 65–90 in: Lepidoptera: Moths and Butterflies. 1. Evolution, Systematics, and Biogeography. Handbook of Zoology Vol. IV, Part 35. N. P. Kristensen, ed. De Gruyter, Berlin and New York.

External links[edit]