Phyllonorycter oxyacanthae

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Phyllonorycter oxyacanthae
Phyllonorycter.oxyacanthae.-.lindsey.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Gracillariidae
Genus: Phyllonorycter
Species:
P. oxyacanthae
Binomial name
Phyllonorycter oxyacanthae
(Frey, 1856)
Synonyms
  • Lithocolletis oxyacanthaeFrey, 1856
  • Phyllonorycter pomonella(Zeller, 1846)

Phyllonorycter oxyacanthae is a moth of the family Gracillariidae found in all of Europe except the Balkan Peninsula. It was described by the German-born Swiss entomologist, Heinrich Frey in 1856. The larvae are known as leaf miners, living inside the leaves of their food plants.

Contents

Description

The wingspan is 6–8 mm. The posterior tarsi with dark fuscous spots. Forewings are golden-brown to dark brown; a white median streak from base to near middle, dark margined above; dorsum narrowly white towards base; four costal and three dorsal white wedge-shaped spots, anteriorly blackish-margined, first costal small, first dorsal long, sometimes interrupted; a blackish apical spot. Hindwings are dark grey. [1]

Similar species

Phyllonorycter sorbi and Phyllonorycter mespilella are close relatives and require genitalia examination to tell apart, alternatively collect the pupa from the food plants. [2]

Ovum

Eggs are laid on the underside of a leaf. [3]

Larvae

Larvae can be found in two generations; July and September to October and are greenish-yellow with a pale brown head. The mine is on the underside of a leaf, usually near an edge or lobe. There are many creases in the epidermis, which strongly contracts, causing the leaf-edge or lobe to fold over. The epidermis remains green, unlike the mines of Parornix anglicella which is smaller and the epidermis is brown. [2] Larvae have been found feeding on Crataegomespilus arnieresi , fireberry hawthorn ( Crataegus chrysocarpa ), hawthorn ( Crataegus monogyna ), small-flowered black hawthorn ( Crataegus pentagyna ), Crataegus rhipidophylla river hawthorn ( Crataegus rivularis ), quince ( Cydonia oblonga ), medlar ( Mespilus germanica ), scarlet firethorn ( Pyracantha coccinea ), common pear ( Pyrus communis ), rowan ( Sorbus aucuparia ) and Sorbus torminalis . [4]

Pupa

Pupae are found in July and from October to May. The winter generation is in a flimsy golden-brown cocoon, while the summer generation is almost without a cocoon and the frass is behind a silken pad at the end of the lobe. [3]

The moth is bivoltine, i.e. two generations in May and August. [5]

Parasitoids

Three parasitoids are known,

Taxonomy

Frey originally called the moth Lithocolletis oxyacantha, from a specimen found in Zurich, Switzerland in 1856. The genus Lithocolletis was raised by Jacob Hübner in 1825 and refers to mosaic work, that is, ″the attractive variegated pattern of the forewings″. The moth was later moved to the genus Phyllonorycter which is Greek for leaf and a digger, referring to a leaf-mine or leaf-miner. The specific name is named after one of the food-plants midland hawthorn (Crataegus oxyacantha) now known as Crataegus laevigata . [9]

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References

  1. ↑ 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
  2. 1 2 Smart, Ben (2017). Micro-moth Field Tips. Rishton: Lancashire & Cheshire Fauna Society. p. 207. ISBN   978-1-9997312-0-5.
  3. 1 2 Emmet, A M; Watkinson, I A; Wilson, M R (1985). Gracillaridae. In Moths and Butterflies of Great Britain and Ireland. Volume 2. Colchester: Harley Books. p. 314–5. ISBN   0-946589-19-4.
  4. ↑ Ellis, W N. "Phyllonorycter oxyacanthae (Frey, 1856) common thorn midget". Plant Parasites of Europe. Retrieved 24 January 2024.
  5. ↑ Kimber, Ian. "15.043 BF323 Phyllonorycter oxyacanthae". UKmoths. Retrieved 24 January 2024.
  6. ↑ Ellis, W N. "Achrysocharoides atys". Plant Parasites of Europe. Retrieved 8 February 2024.
  7. ↑ Ellis, W N. "Sympiesis gordius". Plant Parasites of Europe. Retrieved 8 February 2024.
  8. ↑ Ellis, W N. "Sympiesis sericeicornis". Plant Parasites of Europe. Retrieved 8 February 2024.
  9. ↑ Emmet, A Maitland (1991). The Scientific Names of the British Lepidoptera. Their history and meaning. Colchester: Harley Books. p. 64. ISBN   0-946589-35-6.
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