Natural parasitism of citrus snow scale, unaspis citri, in tamaulipas. Citrus snow scale unaspis citri edis university of florida. The protected zone system aligns with the pest free area system under. There are at least two described species in unaspis. The family diaspididae constitutes one of the most successful groups of plantparasitic arthropods and includes some of the most damaging and unmanageable pests of perennial crops and. Image 1263068 is of citrus snow scale unaspis citri adults on citrus.
He can be used in enclosed areas such as shopping centres, shade and. Reports of it occurring in greece and spain are likely to be invalid and based on interception records from these countries. Prays citri millliere citrus flower moth pseudococcus longispinus targioni longtailed meal u. Cookies on plantwise knowledge bank like most websites we use cookies.
Citrus exocortis exocortis is characterized by drying narrow strips of outer bark, which tend to separate from the inner livebark. List of regulated pests quarantine pests publication of detail of the nepalese quarantine pests in nepal gazette completed. Anastrepha fraterculus and ceratitis capitata do not occur in the united states. Isoclast has been developed globally for use in major crop groups, including cotton, leafy. Unaspis citri unaspis yanonensis xylosandrus crassiusculus xylotrechus altaicus xylotrechus namanganensis mites 10brevipalpus californicus oligonychus perditus tetranychus evansi nematodes heterodera glycines hirschmanniella spp. Pest categorisation of unaspis citri 2018 efsa journal wiley. Pest categorisation of unaspis citri request pdf researchgate. Unaspis citri, known generally as citrus snow scale, is a species of armored scale insect in the. Unaspis yanonensis kuw, pseuococcus citriculus green, quadraspidiotus pernicioss comst. However, only about 20 of these pests can be considered key, in part due to effective biological control. Pestnet factsheets, pestnet, english language external factsheets english. Summary info federal phytosanitary certificate required.
Nutritional symptoms and disorders on citrus sp 176 stephen h. Diaspididae in calabria southern italy poses a serious threat to citrus cultivation. Unaspis citri pest rating proposals and final ratings tag. Center for urban ecology and sustainability, university of minnesota. The affected trees show lack of vigour resulting in dwarfing. Information about unaspis citri diagnosis, including distribution and treatment advice. The imported quarantined products must be free from the following types of quarantined harmful organisms. The ultimate web browser download page for windows xp, vista, 7, 8 and 8. The adults of both sexes have two pairs of wings covered with a white, powdery wax which gives the insects their common name. There is uncertainty as to whether it occurs in continental portugal. It is usually under biological control by the small wasp, aphytis holoxanthus. Pdf natural parasitism of citrus snow scale, unaspis. The imma ture male armor is white, with parallel sides and three longitudinal sections, one central with two marginal ridges.
Unaspis citri brevipalpus cali ornicus brevipalpus phoenicis tetranychus cinnabarinus tetranychus piercei. All plantsplant parts must be free from soil particles. Juana maria coronadoblanco enrique ruizcancino juana maria. White louse scale citrus snow scale unaspis citri scaleeating ladybirds prey on a range of armoured scale insects. Species status of two hostassociated populations of aphytis. Oct 24, 2012 the occurrence of unaspis yanonensis kuwana hemiptera. Citrus whitefly, dialeurodes citri ashmead insecta. Citrio is a lightning fast and free chromiumbased web browser with added features. It is by central science laboratory, harpenden at british crown. This page was last edited on 30 december 2019, at 22.
The many thousands of potential invasive species pose one of the greatest threats to global biodiversity world. An unaspis citri in uska species han insecta nga syahan ginhulagway ni comstock hadton 1883. The disease can be prevented by the use of virus free budwood. This is to ensure that we give you the best experience possible. Pest categorisation of unaspis citri 2018 efsa journal. The citrus snow scale, unaspis citri comstock, is an armored scale belonging to the family diaspididae, which is comprised of 2400 species of armored scales. In west africa, it is confined to the humid tropical zone along the coast and does not occur where there is a dry season vilardebo, 1974. A regional survey was performed to record information about its distribution in local citrus orchards. Fuertes infestaciones son mas comunes sobre arboles mas viejos. In order to develop a integral control program against unaspis citri comstock, the effectiveness of mineral oil, malathion, folimat, bi58, and citol, was assessed using three different doses the required by technicall standards, and 34 and 12 of said dose in in vitro and field conditions.
Aleyrodidae 2 description adult the adult figure 1 is a tiny, mealywhite insect with four mealywhite wings that expand less than 18 of an inch. Adult females lay cylindrical eggs, 1 mm in length, beneath the cover of scale insects. Population dynamics and spread of unaspis yanonensis in. Aug 01, 2004 unaspis citri unaspis citri 20040801 00. Scales secrete prolific amounts of honeydew which support the growth of sooty mold. This is a welldefined and distinguishable species, native to southeastern asia, which has spread to many tropical and subtropical regions. Unaspis citri comstock is one of a number of pests listed in the appendices. Host plants, geographical distribution, natural enemies and biological studies of the citrus mealybug, planococcus citri risso hemiptera. Unaspis is a genus of armored scale insects in the family diaspididae. Nov 21, 2019 acquisition of spiroplasma citri through membranes by homopterous insects. The colour of the few surviving females became darker, development was significantly retarded and they laid fewer eggs than control insects.
Pacific pests and pathogens fact sheets citrus snow scale 105 common name citrus snow scale, white louse scale scientific name. Saglio p, lhospital m, laflfche d, dupont g, bove jm, tully jg, freundt ea, 1973. Modelling global insect pest species assemblages to determine. As a condition for access you agree that the commonwealth makes no representations or warranties regarding the database and does not accept any liability in connection with reliance on the information contained within the database including by third parties you in any way allow or assist to access the information. Unaspis citri citrus snow scale liviidae diaaci diaphorina citri citrus psylla liviidae euphol euphyllura olivina psylle du coton des fleurs margarodidae icerpu icerya purchasi. All photos included on this page can only be used for educational purposes. Presentation mode open print download current view. Unaspis citri, known generally as citrus snow scale, is a species of armored scale insect in the family diaspididae. Diaspis bromeliae, melanaspis smilacis, pinnaspis strachani, pseudaonidia trilobitiformis, unaspis citri, coccus viridis, phenacoccus madeirensis, pseudococcus. Introduction unaspis citri eppocabi, 1997 is a serious pest widely distributed on citrus throughout the main citrus. An unaspis citri in nahilalakip ha genus nga unaspis, ngan familia nga diaspididae. Adults are a rich orange colour with a fine black margin around the base of their wing covers.
The female armor is shaped like an oyster shell, with a central longitudinal ridge. It is brownish purple to black, with a gray border. Other common names include the orange chionaspi, orange snow scale, white louse scale, and white snow scale. The occurrence of unaspis yanonensis kuwana hemiptera. Partial list of pests for which isoclastw active provides control crops partial list cereal citrus cotton fruits pome apples, pears fruits stone. Ishs vi international pineapple symposium scale insects hemiptera.
Mounted body of adult female fusiform, with free abdominal segments moderately lobed laterally. Research on citrus huanglongbing hlb and its causal agents, vectors, and hosts has been going on for many decades, and while controlling hlb remains a major challenge, much has been learned about this disease. Total of 254 pests of 18 commodities are now officially declared and regulated as quarantine pests. Oranges, mandarins, lemons, grapefruit, limes, tangelo. Request pdf pest categorisation of unaspis citri the panel on plant health performed a pest categorisation of the citrus snow scale, unaspis citri comstock. The agroecological citrus system is characterized by richness and abundance of phytophagous species as well as their natural enemies. And the shipment was inspected and found free of aspidiotus nerii, epiphyas postvittana, frankliniella occidentalis, panonychus citri. Longidorus diadecturus nacobbus aberrans xiphinema americanum xiphinema bricolense xiphinema californicum. Encarsia citrina crawford hymenoptera, aphelinidae, a.
Unaspis citri comstock, 1883 citrus snow scale unaspis euonymi comstock, 1881 euonymus scale references. Technical report pdf available august 2006 with 3,095 reads how we measure reads. Erschoviella musculana asian walnut moth free from erschoviella musculana asian walnut moth fumigation with methyl bromide at 48 g cubic meter for 24 hrs at 21 degree c and above or equivalent thereof or fumigation with aluminum phosphide alp at 9 gmmetric ton for minimum 57 days. Chilocorus beetles live for between four and eight weeks. Backyard buddies information sheet chilocorus circumdatus for scale red chilocorus luke is a helmetshaped ladybird beetle, approximately 5 mm in length. Download for windows citrio browser fast and free web browser. For publication in journals, books or magazines, permission should be obtained from the original photographers with a copy to eppo.
The scale has tubelike mouthparts, sucking sap from stems. The panel on plant health performed a pest categorisation of the citrus snow scale, unaspis citri comstock hemiptera. Other common names include the orange chionaspi, orange snow scale, white louse scale, and white snow scale references. White louse scale citrus snow scale unaspis citri red scale aonidiella aurantii oriental scale aonidiella orientalis oleander scale aspidiotus nerii scaleeating ladybirds prey on a range of armoured scale insects. Unaspis citri is frequently intercepted by cdfa and requires a pest rating proposal to support its pest rating.