Archips semistructa

Author: (Meyrick, 1937)

Species Overview:

Adult: wingspan 17-21 mm in males, 22-25 mm in females; forewings yellowish cream; markings brownish in male, basal blotch indistinct. Markings usually indistinct (slightly darker than ground colour) in females. In both sexes hindwing light ochreous cream, greyer anally and basally.

Taxonomic Description:


Archips semistructa male
External characters: 17-21 mm wingspan. Labial palpus yellow-brown, cream terminally; remaining parts of head and thorax browner; abdomen cream. Forewing weakly expanding terminally with costa bent to about middle; apex very short, rounded; termen not concave postapically. Costal fold very short, reaching to 1/12 of costa, tapering terminally. Ground colour yellowish-cream, weakly suffused; strigulation brown. Basal blotch ill-defined, represented by a narrow fascia or a basal suffusion. Median fascia slender, somewhat broadening medially, atrophied dorsally. Subapical blotch rather triangular; subterminal markings atrophied or as a line between subapical blotch and termen. Cilia slightly darker than ground colour, cream at tornus. Hindwing light ochreous cream, sometimes greyer anally and basally; cilia concolorous (Razowski, 1977).

male genitalia A. semistructa
Genitalia: Uncus fairly broad, socius vestigial; sacculus strong, broadening in median portion; with very large upturned termination, densely bristled throughout. Aedeagus terminating into a strong tooth distally; with several small teeth laterally and a strong thorn subapically.


Archips semistructa female
External characters: Larger than male (22-25 mm wingspan). Head and thorax more yellowish. Forewing without costal fold; costa distinctly curved outwards in basal third; apex short; termen straight; cilia of costal part of apex extending outwards. Ground colour yellowish brown with weak orange hue, transversely strigulated with yellow-brown or rust-brown. Markings indistinct, yellow brown. Hindwings yellowish cream, mixed with pale ochreous apically and tinged with pale brownish basally; cilia yellowish, greyer in anal portion of wing (Razowski, 1977).

female genitalia A. semistructa
Genitalia: Sterigma resembles that of Archips breviplicana, but with broader cup-shaped anterior portion. Antrum large, broad, slightly curved laterally, strongly sclerotized; ductus bursae without cestum; signum large, with strong proximal part of basal sclerite.


In males, the ground colour of the forewing varies, the terminal portion often has a greyish hue. The median fascia occasionally reaches the dorsum.
Females occasionally have ill-defined markings.


In Japan, there are two generations yearly. Moths fly in May and June, and from July till September (Yasuda, 1975b). More details may be given in Yukinari, 1981 (translation not available).
In Korea, moths fly from June to September (Byun et al., 1998).

Host plants:

Fragaria ananassa, Rubus microphyllus, Prunus mume, Prunus tomentosa, Punica granatum, Elaeagnus sp., Artemisia spp., Cryptomeria japonica.


Japan: Honshu, Shikoku, Kyushu; China: Taichow; Korea.


Pheromone unknown.


Z 11-14Ac (Ando et al., 1977)


(Records from Japan)
Apanteles sp. (Braconidae)
Macrocentrus linearis (Nees) (Braconidae)
Bracon adoxophyesi Minamikawa (Braconidae)
Campoplex homonae Sonan (Ichneumonidae)
Gregopimpla kuwanae Viereck (Ichneumonidae)
Itoplectis narangae Ashmead (Ichneumonidae)
Trathala flavoorbitalis Cameron (Ichneumonidae)
Brachymeria excarinata Gahan (Chalcidoidea)
Brachymeria lasus Walker (Chalcidoidea)
Trichogramma dendrolimi Matsumura (Chalcidoidea)
Goniozus japonicus Ashmead (Bethylidae)
Zenilla bibatrix Panzer (Tachinidae)
Zenilla dolosa Meigen (Tachinidae)