Ametris nitocris

(Cramer, 1780)

seagrape spanworm moth, greater inchworm

Ametris nitocris, commonly known as the seagrape spanworm , is a geometrid moth described by Pieter Cramer in 1780. The species occurs throughout the Neotropical region, from the southern United States through Central America to South America, including the Caribbean islands. Its larvae are known locally in Florida as the greater inchworm and feed specifically on seagrape (Coccoloba diversifolia).

CramerAndStoll-uitlandsche kapellen vol. 4- pl 393 by Pieter Cramer (1721 - 1776) and Caspar Stoll (between  1725 and 1730 - 1791). Used under a Public domain license.CramerAndStoll-uitlandsche kapellen vol. 3- pl 275 by Pieter Cramer (1721 - 1776) and Caspar Stoll (between  1725 and 1730 - 1791). Used under a Public domain license.

Pronunciation

How to pronounce Ametris nitocris: /əˈmɛtrɪs nɪˈtoʊkrɪs/

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

Identification

may be distinguished from similar geometrid moths by combination of geographic range and association with seagrape . The specific wing pattern details are not documented in available sources. Larvae are recognized as inchworms (looping locomotion) and in Florida are specifically called greater inchworms.

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Habitat

Associated with coastal and tropical where the larval plant Coccoloba diversifolia (seagrape) occurs. This includes beach dunes, coastal hammocks, and tropical hardwood forests.

Distribution

Southern United States (Florida), Central America, South America, and the Antilles (Caribbean islands).

Diet

Larvae feed on Coccoloba diversifolia (seagrape). feeding habits are not documented.

Host Associations

  • Coccoloba diversifolia - larval food plant: seagrape

Behavior

Larvae exhibit typical geometrid inchworm locomotion, moving with a looping gait due to reduced number of .

Similar Taxa

  • Other Geometridae speciesShare similar and larval inchworm form; identification to level requires examination of genitalia or association with specific plants.

More Details

Nomenclature

Originally described as Phalaena nitocris by Cramer in 1780; later transferred to Ametris.

Local names

The larva is called greater inchworm in some parts of Florida, distinguishing it from other local inchworm .

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Sources and further reading