Chrysoesthia sexguttella

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Chrysoesthia sexguttella
Chrysoesthia sexguttella.JPG
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Gelechiidae
Genus:
Chrysoesthia
Species:
C. sexguttella
Binomial name
Chrysoesthia sexguttella
(Thunberg, 1794)
Synonyms
  • Microsetia sexguttella Thunberg, 1794
  • Tinea sexguttella
  • Lita naeviferellaDuponchel, 1843
  • Chrysopora naeviferella
  • Microsetia aurofasciellaStephens, 1834
  • Tinea stipellaHübner, 1796
  • Gelechia stipella var. stipivicinellaBruand, 1859

Chrysoesthia sexguttella, common name the orache leafminer moth, is a moth in the family Gelechiidae. It is found in all of Europe, east to southern Siberia, [1] as well as the north-eastern parts of North America, where it might be an introduced species.

Contents

Mined Atriplex leaf Chrysoesthia sexguttella mined Atriplex leaf.JPG
Mined Atriplex leaf

The wingspan is 8–10 mm. The head is metallic brassy-grey. Forewings are dark purplish-grey, mixed with black, with some whitish scales ; a yellow subdorsal spot in the middle, and a smaller one in disc posteriorly; an ill-defined ochreous-white tornal spot, and another on costa at 3/4. Hindwings are grey. The larva is yellow-whitish; dorsal line brownish; lateral line of orange -reddish spots; head pale brown; plate of 2 blackish. [2]

Adults are on the wing from May to June, and again from August to September. There are two generations per year.

The larvae mine the leaves of Atriplex species (including Atriplex cakotheca , Atriplex hastata , Atriplex hortensis , Atriplex littoralis , Atriplex prostrata , Atriplex nitens , Atriplex patula and Atriplex sibirica ), Chenopodium species (including Chenopodium album , Chenopodium bonus-henricus , Chenopodium giganteum , Chenopodium glaucum , Chenopodium hybridum , Chenopodium murale , Chenopodium opulifolium , Chenopodium polyspermum , Chenopodium quinoa , Chenopodium urbicum and Chenopodium vulvaria ), Amaranthus blitum , Amaranthus caudatus , Bassia scoparia and Spinacia . They form a contorted gallery on the surface of the leaves.

Parasitoids

Pnigalio gyamiensis is a larval-pupal ectoparasitoid of Chrysoesthia sexguttella. The female of P. gyamiensis lays a single egg on the skin of the host larva or nearby it, without any significant preference for a particular variant. The presence of long hairs on its body provides the newly hatched first larval instar with high mobility. [3]

Life cycle

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References

  1. ↑ Junnilainen, J.et al. 2010: The gelechiid fauna of the southern Ural Mountains, part II: list of recorded species with taxonomic notes (Lepidoptera: Gelechiidae). Zootaxa, 2367: 1–68. Preview
  2. ↑ Meyrick, E., 1895 A Handbook of British Lepidoptera MacMillan, London pdf PD-icon.svg This article incorporates text from this source, which is in the public domain . Keys and description
  3. ↑ The preimaginal stages of Pnigalio gyamiensis Myartseva & Kurashev, 1990 (Hymenoptera, Eulophidae), a parasitoid associated with Chrysoesthia sexguttella (Thunberg) (Lepidoptera, Gelechiidae)


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