Crambinae

Grass-veneers and Allies, snout moth grass borers, sod webworms

Tribe Guides

8

Crambinae is a large of Crambidae comprising over 1,800 worldwide. Members are commonly known as snout moths, grass-veneers, or . The subfamily is characterized by specialized morphological features including tympanal organs and a phallus attached medially to the juxta. Larvae are primarily root feeders or stem borers on grasses, with several species recognized as significant agricultural pests of maize, sugarcane, rice, and turfgrasses.

Eoreuma by (c) Victor Engel, some rights reserved (CC BY), uploaded by Victor Engel. Used under a CC-BY license.Agriphila straminella by (c) Donald Hobern, some rights reserved (CC BY). Used under a CC-BY license.Agriphila vulgivagellus by (c) Andy Reago & Chrissy McClarren, some rights reserved (CC BY). Used under a CC-BY license.

Pronunciation

How to pronounce Crambinae: /kræmˈbaɪni/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Crambinae are often called snout moths due to prominent labial palpi that extend forward from the . External identification of many is extremely difficult; adults of such as Diatraea cannot be reliably distinguished by external characters alone and require dissection and comparison of genitalia structures. The is supported by the structure of tympanal organs and the phallus attached medially to the juxta.

Images

Habitat

Associated with grassland , including native prairies, meadows, agricultural fields, and turfgrass systems. Some are restricted to specific grassland types such as alpine snow tussock grasslands or lowland tropical grasslands.

Distribution

Worldwide distribution with highest diversity in tropical and temperate regions. Well-represented in North America (approximately 100 ), the Neotropics, Africa, Asia, and Australasia.

Diet

Larvae are root feeders or stem borers, feeding primarily on grasses ( Poaceae).

Ecological Role

Larvae function as root feeders and stem borers in grassland . Several are economically important agricultural pests. Some species exhibit brachyptery (flightlessness) in females, with females remaining sedentary while males actively seek mates.

Human Relevance

Several are significant agricultural pests, including pests of sod grasses, maize, sugarcane, rice, and other cereal crops. Commonly referred to as in turfgrass management.

Similar Taxa

  • SchoenobiinaeAlso grass-associated Crambidae with similar larval habits; distinguished by different genitalia structure and tympanal organ
  • PyralinaeFormerly treated as part of Pyralidae together with Crambinae; distinguished by different wing venation and larval associations

Tags

Sources and further reading