Cameraria Ohridella (Horsechestnut Leafminer). CABI
Cameraria Ohridella (Horsechestnut Leafminer) [link]Paper  abstract   bibtex   
[Excerpt: Preferred Scientific Name] Cameraria ohridella Deschka & Dimic [Preferred Common Name] horsechestnut leafminer [International Common Names] English: horse-chestnut leafminer. French: mineuse du marronnier [] [...] [Summary of Invasiveness] Cameraria ohridella probably originates from remote natural stands of the European horse-chestnut, Aesculus hioppocastanum in Greece, Albania and Macedonia. It was first observed attacking ornamental horse-chestnut trees in Macedonia in the 1970s, then in Serbia in 1987 and Austria in 1989, from where it spread to most of Europe. Since then, in all invaded regions, outbreaks have continued unabated, causing aesthetic damage to horse-chestnut, one of the favourite ornamental trees in European cities. The fast dispersal of the moth in Europe is attributed mainly to human transport. Cars, lorries, trains and other vehicles may carry adults and overwintering pupae in dead leaves. The moth is listed in the 100 worse invasive species in Europe in the DAISIE database (DAISIE, 2009). [] [...] [Description] The morphology of all developmental stages of C. ohridella has been studied mainly by Deschka and Dimic (1986), Skuhravý (1998) and Sefrová and Skuhravý (2000). [::Eggs] The eggs are white and 0.2-0.4 mm. [::Larvae] There are four, occasionally five, instars of feeding larvae and two instars of spinning larvae. Instars of feeding larvae differ by length and by width of the head capsule (Sefrova and Skuhravy, 2000). [] First-instar larvae are 0.5 mm long; head capsule is 0.1-0.17 mm wide. Second-instar larvae are 1.2 mm long; head capsule is 0.2-0.3 mm wide. Third-instar larvae are 2.1 mm long; head capsule is 0.36-0.46 mm wide. Fourth-instar larvae are 3.5 mm long; head capsule is 0.5-0.66 mm wide. [] Larval morphology of C. ohridella corresponds to that of the subfamily Lithocolletinae (Kumata, 1963). The body is distinctly constricted between the segments which appear to be convex laterally. Tergites and sternites are formed from extensively sclerotized plates, which enable the caterpillars to move within the mine. The mouthparts, the labrum and labium, are massive, shield-shaped; the flat sickle-shaped mandibles move horizontally. The thoracic legs and the ventral and anal prolegs are completely reduced. The width of the head capsule of the two spinning instar larvae does not change from the fourth feeding instar larva. Mouthparts are complete and the antennae, maxillae and maxillar palpi and spineret are present (Sefrova and Skuhravy, 2000). [::Pupae] The pupa is brown and is 2.9-4.5 mm long (3.7 mm on average). Freise and Heitland (1999) describes a method to distinguish between male and female pupae. [::Adults] The body is 4-5 mm long. The moth is a rich brown colour with bright white chevrons edged with black. [Distribution] C. ohridella was first observed attacking Aesculus hippocastanum in Macedonia in the 1970s, and described as a new species in 1986 (Simova-Tosic and Filev, 1985; Deschka and Dimic, 1986). In 1987 it was found in Serbia (Petkovic, 1989) and in 1989 in Austria, from where it spread to most of Europe. Its origin has been a matter of debate. It was first suggested to be a relict species that has survived the Ice Age with its host in south-eastern Europe (Deschka and Dimic, 1986; Grabenweger and Grill, 2000), whereas, according to Holzschuh (1997) and Kenis et al. (2005) it was more likely a non-European species only recently introduced in the Balkans. Hellrigl (2001) suggested that the moth may have shifted from another host tree (e.g. an Acer species) in the Balkans or the Near East. Recent molecular studies and observations of ancient herbarium collections now suggest that the moth originates from some remote natural horse-chestnut stands in the Balkan mountains of Macedonia, Albania and Greece and that it has moved to urban areas in these countries in the second half of the 20th century (Valade et al., 2009; Lees et al., 2011). [] [...]
@article{cabiCamerariaOhridellaHorsechestnut2015,
  title = {Cameraria Ohridella (Horsechestnut Leafminer)},
  author = {{CABI}},
  date = {2015},
  url = {http://mfkp.org/INRMM/article/13687897},
  abstract = {[Excerpt: Preferred Scientific Name]

 Cameraria ohridella Deschka \& Dimic

[Preferred Common Name]

 horsechestnut leafminer

[International Common Names]

 English: horse-chestnut leafminer.  French: mineuse du marronnier

[] [...]

[Summary of Invasiveness]

Cameraria ohridella probably originates from remote natural stands of the European horse-chestnut, Aesculus hioppocastanum in Greece, Albania and Macedonia. It was first observed attacking ornamental horse-chestnut trees in Macedonia in the 1970s, then in Serbia in 1987 and Austria in 1989, from where it spread to most of Europe. Since then, in all invaded regions, outbreaks have continued unabated, causing aesthetic damage to horse-chestnut, one of the favourite ornamental trees in European cities. The fast dispersal of the moth in Europe is attributed mainly to human transport. Cars, lorries, trains and other vehicles may carry adults and overwintering pupae in dead leaves. The moth is listed in the 100 worse invasive species in Europe in the DAISIE database (DAISIE, 2009). 

[] [...]

[Description] The morphology of all developmental stages of C. ohridella has been studied mainly by Deschka and Dimic (1986), Skuhravý (1998) and Sefrová and Skuhravý (2000).

[::Eggs]

The eggs are white and 0.2-0.4 mm.

[::Larvae]

There are four, occasionally five, instars of feeding larvae and two instars of spinning larvae. Instars of feeding larvae differ by length and by width of the head capsule (Sefrova and Skuhravy, 2000).

[] First-instar larvae are 0.5 mm long; head capsule is 0.1-0.17 mm wide. Second-instar larvae are 1.2 mm long; head capsule is 0.2-0.3 mm wide. Third-instar larvae are 2.1 mm long; head capsule is 0.36-0.46 mm wide. Fourth-instar larvae are 3.5 mm long; head capsule is 0.5-0.66 mm wide.

[] Larval morphology of C. ohridella corresponds to that of the subfamily Lithocolletinae (Kumata, 1963). The body is distinctly constricted between the segments which appear to be convex laterally. Tergites and sternites are formed from extensively sclerotized plates, which enable the caterpillars to move within the mine. The mouthparts, the labrum and labium, are massive, shield-shaped; the flat sickle-shaped mandibles move horizontally. The thoracic legs and the ventral and anal prolegs are completely reduced. The width of the head capsule of the two spinning instar larvae does not change from the fourth feeding instar larva. Mouthparts are complete and the antennae, maxillae and maxillar palpi and spineret are present (Sefrova and Skuhravy, 2000).

[::Pupae]

The pupa is brown and is 2.9-4.5 mm long (3.7 mm on average). Freise and Heitland (1999) describes a method to distinguish between male and female pupae.

[::Adults]

The body is 4-5 mm long. The moth is a rich brown colour with bright white chevrons edged with black.

[Distribution] C. ohridella was first observed attacking Aesculus hippocastanum in Macedonia in the 1970s, and described as a new species in 1986 (Simova-Tosic and Filev, 1985; Deschka and Dimic, 1986). In 1987 it was found in Serbia (Petkovic, 1989) and in 1989 in Austria, from where it spread to most of Europe. Its origin has been a matter of debate. It was first suggested to be a relict species that has survived the Ice Age with its host in south-eastern Europe (Deschka and Dimic, 1986; Grabenweger and Grill, 2000), whereas, according to Holzschuh (1997) and Kenis et al. (2005) it was more likely a non-European species only recently introduced in the Balkans. Hellrigl (2001) suggested that the moth may have shifted from another host tree (e.g. an Acer species) in the Balkans or the Near East. Recent molecular studies and observations of ancient herbarium collections now suggest that the moth originates from some remote natural horse-chestnut stands in the Balkan mountains of Macedonia, Albania and Greece and that it has moved to urban areas in these countries in the second half of the 20th century (Valade et al., 2009; Lees et al., 2011).

[] [...]},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13687897,cabi,cameraria-ohridella,forest-pests,forest-resources,monography}
}

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