Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Marasmia trapezalis
Maize webworm
Introduced on Poaceae (Peak et al. 1998).
Domain
Eukaryota
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Lepidoptera
Superfamily
Pyraloidea
Family
Crambidae
Genus
Marasmia
Species
trapezalis
Taxon category: Accepted
Sy:Maruca trapezalis
Origin: Introduced - established
Year of first record: 1992
Mode of introduction: Accidental
Introduction Pathway: Contaminant
Subpathway: Contaminant on plants (inc. seeds and plant associated material)
Introduced status: Naturalized
Invasive status: No data
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: Sabela, Santa Cruz, Santiago (Peck, 1998; Roque-Albelo, 2006), San Cristóbal (Landry, 2016).
- Causton, C.E. Peck, S. B., Sinclair, B. J., Roque-Albelo, L., Hodgson, C. J. & B. Landry. (2006) Alien insects: threats and implications for the conservation of the Galapagos Islands. Annals of the Entomological Society of America, 99(1), 121-143.
- Landry, B. (2016) Taxonomic revision of the Spilomelinae (Lepidoptera, Pyralidae s. l.) of the Galápagos Islands, Ecuador Revue suisse de Zoologie (September 2016) 123(2): 315-399 - ISSN 0035-418
- Peck, S.B. Heraty, J., Landry, B. & Sinclair, B.J. (1998) Introduced insect fauna of an oceanic archipelago: The Galápagos Islands, Ecuador. Am. Entomol. 44: 218-237.
- Roque-Albelo, L. (2006) Diversity and ecology of the Lepidoptera in the Galápagos Islands, Ecuador Cardiff University (United Kingdom)
- Roque-Albelo, L. Landry, B. (2016) CDF Checklist of Galapagos Butterflies and Moths Charles Darwin Research Station, Puerto Ayora, Ecuador, 32 pp.
You are welcome to download and use the information found in this page, acknowledging its source.
This page should be cited as follows:
"Galapagos Species Database, Marasmia trapezalis", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=7256. Accessed 31 October 2026.