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Species Grapholita delineana - Eurasian Hemp Moth - Hodges#3443.1

Eurasian Hemp Moth - Hodges #3443.1 - Grapholita delineana Grapholita sp.? - Grapholita delineana Pennsylvania Moth - Grapholita delineana - male - female Eurasian Hemp Moth - Grapholita delineana Eurasian Hemp Moth - Grapholita delineana Grapholita tristrigana or G. delineana? - Grapholita delineana Grapholita tristrigana or G. delineana? - Grapholita delineana Gallmaker, Cannabis - Grapholita delineana
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Tortricoidea (Tortricid Moths)
Family Tortricidae (Tortricid Moths)
Subfamily Olethreutinae
Tribe Grapholitini
Genus Grapholita
Species delineana (Eurasian Hemp Moth - Hodges#3443.1)
Hodges Number
Synonyms and other taxonomic changes
Grapholita delineana Walker, 1863 (1)
Laspeyresia delineana
Cydia delineana
FWL 4.5-6.5mm (2)
WS 11.5 mm (male), 15 mm (female)
Adult: FW dark brown with two pair of white dorsal strigulae on each forewing. HW are dark brown. Wing pattern is similar to other Grapholita, especially Grapholita tristrigana in eastern North America. The dorsal strigulae in G. delineana are usually narrow and distinctly separated, while those in G. tristrigana may be confluent. (3)
Larva: Similar to other Grapholita. An anal comb is absent. (3)
Introduced. In North America since at least 1943 (Miller, 1982).
Moth Photographers Group – distribution & flight-period chart (2)
Adults are present in mid-May to August in North America. (2)
Larvae feed in the stems and developing seeds of Cannabis sativa (marijuana).
Life Cycle
2-3 generations per year. Females lay eggs on the leaves and stems of the host plant. Larvae feed in the stems, on developing seeds, and also on flowers. Infested plants show a swelling in the stem and possibly and entrance hole with extruded frass. Pupation occurs in the soil. (2)
Print References
Miller, W.E., 1982. Grapholita delineana (Walker), a Eurasian hemp moth, discovered in North America. Annals of the Entomological Society of America 75(2): 184–186. (abstract)
Walker, F. 1863. Tortricites & Tineites. List of the specimens of lepidopterous insects in the collection of the British Museum, 28: 389. (1)