scholarly journals Comparing armoured scale insect (Hemiberlesia spp) populations on male and female Actinidia chinensis vines

2009 ◽  
Vol 62 ◽  
pp. 274-278
Author(s):  
M.G. Hill ◽  
S.J. Dobson ◽  
C.M. Mckenna ◽  
B.J. Maher ◽  
N.A. Mauchline
Keyword(s):  
Scale Insect ◽  
Scale Insects ◽  
Insect Control ◽  
Actinidia Chinensis ◽  
Male And Female ◽  
Insect Populations ◽  
Armoured Scale Insects

The wood and leaves of Actinidia chinensis Hort16A and two male pollinisers A chinensis Meteor and A chinensis Sparkler from commercial kiwifruit orchards were sampled for the presence of armoured scale insects during winter 2007 and summer 2008/09 The numbers and species of scale insect were recorded Meteor had high armoured scale insect populations on its wood with approximately 10 times more armoured scale insects than Sparkler or Hort16A The leaves of Hort16A vines adjacent to Meteor vines had 44 more armoured scale insects and were 30 more likely to be infested by scale insects than the leaves of Hort16A vines adjacent to Sparkler vines The implications of these findings for armoured scale insect control on Hort16A fruit are discussed

scholarly journals Settlement of armoured scale insects on fruit of commercial Actinidia spp

2005 ◽  
Vol 58 ◽  
pp. 294-298
Author(s):  
N.A. Mauchline ◽  
M.G. Hill
Keyword(s):  
Fruit Size ◽  
Scale Insect ◽  
Scale Insects ◽  
Actinidia Arguta ◽  
Pest Status ◽  
Summer Generation ◽  
New Varieties ◽  
Armoured Scale Insects

The proportion of greedy (Hemiberlesia rapax) and latania (H lataniae) scale insect crawlers (Hemiptera Diaspididae) that settled on fruit of commercial kiwifruit cultivars Actinidia arguta cv K2D4 A chinensis cv Hort16A and A deliciosa cv Hayward was quantified at intervals from 20 to 100 final fruit size In all three cultivars the proportion of settled crawlers increased as the fruit matured The settlement of greedy scale was greater than latania on Hort16A fruit with minimal differences between scale species on other cultivars Comparisons of scale settlement with scale phenology found fruit of K2D4 was vulnerable to settlement from the first summer generation with secondgeneration scale mainly infesting Hayward fruit Hort16A fruit can be infested by both generations Implications of these findings for the pest status of scale insects and customisation of the industry pestmonitoring system (KiwiGreen) for new varieties are discussed

scholarly journals Susceptibility of kiwifruit shelter species to two armoured scale insects

2012 ◽  
Vol 65 ◽  
pp. 29-34
Author(s):  
N.A. Mauchline ◽  
M.G. Hill ◽  
K.A. Stannard ◽  
Q.G. Zhuang
Keyword(s):  
Pinus Radiata ◽  
Tree Species ◽  
Cryptomeria Japonica ◽  
Scale Insect ◽  
Scale Insects ◽  
Good Resistance ◽  
Relative Susceptibility ◽  
Resistant Species ◽  
Survival And Growth ◽  
Armoured Scale Insects

The relative susceptibility to greedy and latania scale of 21 tree species used as kiwifruit shelter was determined using laboratory and shade house bioassays The bioassays confirmed the general susceptibility of most of the willow and poplar selections but showed that some selections had good levels of resistance measured by scale insect survival and growth For some shelter species resistance to the two armoured scale species differed The most resistant of the commonly used shelter species were Bambusa oldhami Pinus radiata and Cryptomeria japonica Other less commonly used species such as Pittosporum spp also showed good resistance Using these resistant species as shelter in a kiwifruit orchard will minimise the risk of the shelter becoming a reservoir for either species of armoured scale

Scale insect fauna (Hemiptera: Sternorrhyncha: Coccoidea) of New Zealand’s pygmy mistletoes (Korthalsella: Viscaceae) with description of three new species: Leucaspis albotecta, L. trilobata (Diaspididae) and Eriococcus korthalsellae (Eriococcidae)

Zootaxa ◽  
2010 ◽  
Vol 2644 (1) ◽  
pp. 1 ◽  
Author(s):  
ROSA C. HENDERSON ◽  
AMIR SULTAN ◽  
ALASTAIR W. ROBERTSON
Keyword(s):  
New Species ◽  
New Zealand ◽  
Adult Female ◽  
Scale Insect ◽  
Instar Nymph ◽  
Scale Insects ◽  
Insect Fauna ◽  
Male And Female ◽  
Black Scale ◽  
Three New Species

The scale insect fauna recorded on the pigmy mistletoe genus Korthalsella (Viscaceae) and New Zealand’s loranthaceous mistletoes is reviewed. Three new species from New Zealand discovered on Korthalsella species during this study are described: the adult female, 2nd-instar male and female nymphs of two pupillarial species Leucaspis albotecta sp. nov. and Leucaspis trilobata sp. nov. (Diaspididae); and the adult female, 2nd-instar male and female nymphs and 1st-instar nymph of Eriococcus korthalsellae sp. nov. (Eriococcidae). A distribution map is provided for the three new species. We report the first records of adventive (exotic) scale insects on Korthalsella species in New Zealand – Ceroplastes sinensis Del Guercio, Coccus hesperidum Linnaeus, soft brown scale, Saissetia coffeae (Walker), hemispherical scale, S. oleae (Olivier), black scale (Coccidae), and Aspidiotus nerii Bouché, oleander scale, Hemiberlesia lataniae (Signoret), latania scale, H. rapax (Comstock), greedy scale (Diaspididae), while three native scale insects are also first records: Kalasiris perforata (Maskell) (Coccidae), Eriococcus pallidus Maskell (Eriococcidae) and Paracoccus glaucus (Maskell) (Pseudococcidae). Ten scale insect species are listed for New Zealand’s loranthaceous mistletoes.

MEASURING THE RESISTANCE OF ACTINIDIA CHINENSIS TO ARMOURED SCALE INSECTS

2007 ◽  
pp. 685-692 ◽  
Author(s):  
M.G. Hill ◽  
N.A. Mauchline ◽  
C.H. Cheng ◽  
P.G. Connolly
Keyword(s):  
Scale Insects ◽  
Actinidia Chinensis ◽  
Armoured Scale Insects

scholarly journals Armoured scale insect infestation on kiwifruit in relation to position on the vine

2006 ◽  
Vol 59 ◽  
pp. 47-50 ◽  
Author(s):  
M.G. Hill MG ◽  
N.A. Mauchline ◽  
P. Ramankutty
Keyword(s):  
Scale Insect ◽  
Scale Insects ◽  
Insect Infestation ◽  
Armoured Scale Insects

The infestation of armoured scale insects on kiwifruit at various distances from the leader in a commercial organic cv Hayward block in the Bay of Plenty was examined at harvest in 2005 This was to test the hypothesis that fruit further from the leader have fewer armoured scale insects than those nearer to the leader From the 25 pergolatrained vines examined kiwifruit from directly beneath the leader had a significantly higher probability of being infested with armoured scale insects (26) compared with fruit sampled from 08 m (116) or 16 m (63) away from the leader The orientation of fruit on the vine (westfacing or eastfacing) had no effect on armoured scale insect incidence Individual vines differed significantly in their level of armoured scale insect infestation Latania scale comprised 84 of the scale insects The implications of these results for growers are discussed

scholarly journals A survey of armoured scale insects on kiwifruit shelter

2002 ◽  
Vol 55 ◽  
pp. 354-360
Author(s):  
L.E. Jamieson ◽  
S. Dobson ◽  
J. Cave ◽  
P.S. Stevens
Keyword(s):  
Species Composition ◽  
Japanese Cedar ◽  
Scale Insect ◽  
Common Species ◽  
Scale Insects ◽  
Regular Monitoring ◽  
Balsam Poplar ◽  
Insect Infestations ◽  
Aspidiotus Nerii ◽  
Armoured Scale Insects

Scale infested kiwifruit continues to be a problem despite regular monitoring and spraying Shelterbelt trees may be a source of scale insect infestations in kiwifruit vines A survey of armoured scale insects in 12 common species of shelterbelt trees used in kiwifruit orchards was carried out Bark samples were removed and the density of scale insects and species composition was determined Japanese cedar as a shelterbelt species is unlikely to be a significant host for scale insects whereas Balsam poplar willow and leyland cypress were more likely to host high populations Shelterbelts in Northland Auckland and Gisborne generally had higher levels of scale insects than the same species in the Bay of Plenty and Nelson Greedy or latania scale (Hemiberlesia spp) was found more frequently than oleander scale (Aspidiotus nerii)

scholarly journals A technique for measuring growth rate and survival of armoured scale insects

2005 ◽  
Vol 58 ◽  
pp. 288-293 ◽  
Author(s):  
M.G. Hill ◽  
N.A. Mauchline ◽  
L.R. Cate ◽  
P.G. Connolly
Keyword(s):  
Growth Rate ◽  
Image Analysis ◽  
Digital Image Analysis ◽  
Scale Insect ◽  
Scale Insects ◽  
Ecological Studies ◽  
Mortality Factors ◽  
Relative Resistance ◽  
Armoured Scale Insects ◽  
First Time

A method for measuring the size and growth rate of armoured scale insects using digital image analysis is described It was used in a preliminary experiment that demonstrated betweenplant differences in the growth rate of armoured scale insects on kiwifruit leaves It also allowed the timing and extent of mortality factors to be measured accurately Heavy predation of armoured scale insects on kiwifruit leaves probably caused by earwigs was observed for the first time The development of this technique as a tool for both ecological studies of scale insect and in measuring the relative resistance of kiwifruit germplasm to armoured scale insects is discussed

Towards the identification of the scale insects (Hemiptera: Coccomorpha) of continental Africa: 1. Identification of the families

Zootaxa ◽  
2021 ◽  
Vol 5052 (2) ◽  
pp. 1-40
Author(s):  
GILLIAN W. WATSON ◽  
DAVID OUVRARD
Keyword(s):  
Scale Insect ◽  
Economic Importance ◽  
Scale Insects ◽  
Insect Fauna ◽  
Adult Females ◽  
Plant Parasites ◽  
Plant Sap

Scale insects (Hemiptera: Sternorrhyncha: Coccomorpha) are obligate plant parasites feeding on plant sap; some are damaging pests in agriculture, horticulture and forestry. Despite their economic importance, the scale insects found in continental Africa have not been extensively studied and the keys for identifying them are incomplete and scattered through the literature in several languages. The aim of this study is to improve our understanding of the African scale insect fauna. As a first step towards their identification, we provide a key to the 23 families currently known from continental Africa, based on slide-mounted adult females, covering Aclerdidae, Asterolecaniidae, Cerococcidae, Coccidae, Conchaspididae, Dactylopiidae, Diaspididae, Eriococcidae, Halimococcidae, Kermesidae, Kerriidae, Kuwaniidae, Lecanodiaspididae, Margarodidae, Matsucoccidae, Micrococcidae, Monophlebidae, Ortheziidae, Phoenicococcidae, Pseudococcidae, Putoidae, Rhizoecidae and Stictococcidae.  

Neolecanium cornuparvum (Magnolia scale).

2021 ◽  
Author(s):  
Angela Whittaker
Keyword(s):  
Endangered Species ◽  
Adverse Effects ◽  
Native Species ◽  
Scale Insect ◽  
Scale Insects ◽  
Southern Ontario ◽  
Eastern Usa

Abstract Magnolia scale, Neolecanium cornuparvum, is a scale insect that is native to the eastern USA, where it is a widely distributed pest of wild and ornamental Magnolia in landscapes and nurseries. In general, non-native species of Magnolia tend to be more susceptible to attack than native US species. N. cornuparvum has also been reported on Wisteria in Connecticut. The genus and species were first reported from Canada from a specimen of N. cornuparvum collected in 1998 in southern Ontario, where the insect is now an established pest of Magnolia, having probably been spread via the plant trade. An infestation of scale insects believed to be N. cornuparvum was first observed in Hawaii on Sesbania tomentosa on Kauai in August 2004; it had significant adverse effects on this endangered species.

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