Maritime garden snail - Cernuella virgata
EEffective: November 6, 2020
Screening Aids:
Taxonomic Position:
Stylommatophora : Helicidae, Hygromidae
Pest Type:
Gastropods
Pest Code (NAPIS):
IGDGAMA
This pest is a member of the following lists:
| Mollusk |
|---|
| Small Grains |
| Soybean |
These Approved Methods are appropriate for:
2024, 2023, 2022, 2021, 2020
Human and Animal Pathogens Transmitted:
Brachylaima cribbi. Angiostrongylus cantonensis* is most readily associated with Tropical species such as Giant African Snail (Achatina fulica) but can be associated with other exotic slugs/snails. Cernuella virgata can transmit Cystocaulus ocreatus, Muellerius capillaris, and Neostrongylus linearis to livestock.
*Relationship not known or not well established.
*Relationship not known or not well established.
Plant Pathogens and Organisms Vectored:
Not known to vector any pathogens or other associated organisms.
Survey
Approved Method(s):
| Method | Product Name / Instructions | NAPIS Survey Method |
|---|---|---|
| Visual | See the Survey Manuals for more details. |
3031 - General Visual Observation |
Method Notes:
Refer to the Detection Survey section (pages 4-1 through 4-4) and Hygromiidae information in the Pest Information section of the New Pest Response Guidelines: Temperate Terrestrial Gastropods (USDA-APHIS-PPQ, 2008-rev. 2010) for additional survey information.
Identification
ID/Diagnostic: Morphological
Morphological: All specimens should be submitted to David G. Robinson / Francisco J. Borrero. They are able to identify (even immature specimens) to the species level for this genus.
David G. Robinson / Francisco J. Borrero
USDA APHIS PPQ PHP National Identification Services
National Malacology Laboratory
Academy of Natural Sciences
1900 Benjamin Franklin Parkway
Philadelphia, PA 19103-1101
Ph.: 215 299-1175
Fx: 215 567-7229
e-mail: david.g.robinson@usda.gov; francisco.j.borrero@usda.gov
David G. Robinson / Francisco J. Borrero
USDA APHIS PPQ PHP National Identification Services
National Malacology Laboratory
Academy of Natural Sciences
1900 Benjamin Franklin Parkway
Philadelphia, PA 19103-1101
Ph.: 215 299-1175
Fx: 215 567-7229
e-mail: david.g.robinson@usda.gov; francisco.j.borrero@usda.gov
Mistaken Identities:
C. virgata closely resembles the white Italian snail (Theba pisana) in appearance and pest status. C. virgata can be differentiated from T. pisana by more pronounced spiral banding.