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This species is found in southwestern parts of the united states; from California east to Texas and from Colorado south to northern Mexico. Adults are jet black with a bluish sheen and active during the day. Their lackadaisical flight is a indicator of their chemical protection but their long wings and elongate abdomen, coloration and sheen make them easily mistakable for sympatric species of wasps in flight.
Larvae feed on grape (Vitis, especially V. arizonica) and accept creeper (Parthenocissus sp.). Gregarious early instars feed side by side on the underside of grape leaves. The patterns of skeletonization are characteristic and a useful search image in the field. Later instar larvae are unmistakable; vibrant sweet corn yellow with two bold blue bands and dark black setal clusters forming more bands around the body. Contact with larval setae results in a mild dermatalogical reaction (rash and welt development as well as some pruritus) which would elevate in severity with increased number of larvae.
Mid and late instar larvae defoliate host plants and breakouts of Harrisina metallica can have devastating effects on vineyards. This species has been listed as a pest in CA.
Harrisina metallica ist ein in Nordamerika vorkommender Schmetterling aus der Familie der Widderchen (Zygaenidae).
Harrisina metallica erreicht eine Flügelspannweite von 22 bis 30 Millimetern. Die Flügel sind schmal, langgestreckt und zeichnungslos schwarz gefärbt. Zuweilen schimmern sie metallisch bläulich oder grünlich. Der Kragen hinter dem schwarzen Kopf ist schwarz oder nur schwach rötlich gefärbt. Die Hinterflügeloberseite ist zeichnungslos schwarz. Der Hinterleib ist ebenfalls schwarz. Bei beiden Geschlechtern sind die schwarzen Fühler bewimpert. Der Saugrüssel ist gut entwickelt.
Bei Harrisina americana hat der Kragen stets eine auffällig orangerote Farbe. Die Art kommt im Westen der USA nicht vor, somit gibt es auch keine geographische Überlappung mit Harrisina metallica.
Ausgewachsene Raupen von Harrisina metallica haben eine gelbe Grundfärbung und sind mit zwei breiten blauen sowie mehreren schmaleren schwarzen Querbändern, die aus einer Reihe von kurz behaarten Punktwarzen gebildet werden versehen.
Harrisina metallica kommt im Westen und mittleren Westen der USA zuweilen zahlreich vor.[1] Hauptlebensraum sind sonnige Hänge sowie Weinanbaugebiete.
Die überwiegend tagaktiven Falter fliegen in mehreren Generationen zwischen März und November, schwerpunktmäßig im September.[2] Zur Nektaraufnahme besuchen sie gerne Blüten. Nahrungspflanzen der Raupen sind verschiedene Weinreben- (Vitis) und Jungfernrebenarten (Parthenocissus). Die Raupen werden zuweilen durch die Entlaubung von kultivierten Weinreben in kalifornischen Weinanbaugebieten schädlich. Die Schäden äußern sich in braunem, nekrotischem, skelettiertem Blattgewebe, da vorzugsweise die jungen, gesellig lebenden Larven einige, aber nicht alle Schichten eines Blattes fressen. Spätere Stadien vertilgen fast das gesamte Blatt und hinterlassen nur wenige große Adern. Im englischen Sprachgebrauch wird die Art deshalb als Western Grapeleaf Skeletonizer (Westliche Weinblatt-Skelettiermotte) bezeichnet.
Harrisina metallica ist ein in Nordamerika vorkommender Schmetterling aus der Familie der Widderchen (Zygaenidae).
Harrisina metallica, the western grapeleaf skeletonizer, is a species of moth of the family Zygaenidae. It is found in the Southwestern United States, from California to Texas, north to Colorado and Utah and in northern Mexico.
The wingspan is 22–30 millimetres (0.87–1.18 in). Adults are on wing from April to October depending on the location.
The larvae feed on grapes[1] and species of Parthenocissus. Some choose to call these larvae "grape worms" because of their impeccable taste for such a sweet fruit they're laid upon by their parents. The caterpillar also have stinging hairs that can cause rash or allergic reaction.
They are in fact natures pest to precious to many grape vineyards affecting the crops yield for the season.
The problem can be simply taken care of by bacteria-based insecticide, organically certified.
Harrisina metallica, the western grapeleaf skeletonizer, is a species of moth of the family Zygaenidae. It is found in the Southwestern United States, from California to Texas, north to Colorado and Utah and in northern Mexico.
The wingspan is 22–30 millimetres (0.87–1.18 in). Adults are on wing from April to October depending on the location.
The larvae feed on grapes and species of Parthenocissus. Some choose to call these larvae "grape worms" because of their impeccable taste for such a sweet fruit they're laid upon by their parents. The caterpillar also have stinging hairs that can cause rash or allergic reaction.
They are in fact natures pest to precious to many grape vineyards affecting the crops yield for the season.
The problem can be simply taken care of by bacteria-based insecticide, organically certified.
A group of Harrisina metallica larvae skeletonizing a leaf
Harrisina metallica is een vlinder uit de familie van de bloeddrupjes (Zygaenidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1885 door Stretch.
Bronnen, noten en/of referenties
The Western Grapeleaf Skeletonizer (Harrisina metallica) là một loài bướm đêm thuộc họ Zygaenidae. Loài này có ở South-western parts of Hoa Kỳ, from California to Texas, phía bắc đến Colorado và Utah and in miền bắc México.
Sải cánh dài 22–30 mm. Con trưởng thành bay từ tháng 4 đến tháng 10 tùy theo địa điểm.
Ấu trùng ăn grapes and Parthenocissus species.
Phương tiện liên quan tới Harrisina metallica tại Wikimedia Commons
Bài viết về Bộ Cánh vẩy này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. The Western Grapeleaf Skeletonizer (Harrisina metallica) là một loài bướm đêm thuộc họ Zygaenidae. Loài này có ở South-western parts of Hoa Kỳ, from California to Texas, phía bắc đến Colorado và Utah and in miền bắc México.
Sải cánh dài 22–30 mm. Con trưởng thành bay từ tháng 4 đến tháng 10 tùy theo địa điểm.
Ấu trùng ăn grapes and Parthenocissus species.
