Outbreak of oriental yellow scale insect,Aonidiella orientalis(Newstead) (Homoptera: Diaspididae), on neem in Sudan

EPPO Bulletin ◽  
2016 ◽  
Vol 46 (1) ◽  
pp. 125-128 ◽  
Author(s):  
S. I. M. Ensaf ◽  
A. E. Inaam ◽  
H. E. Manal
Keyword(s):  
Scale Insect ◽  
Yellow Scale

The scale insect Coccus pseudomagnoliarum (Kuwana) (Hemiptera: Coccomorpha: Coccidae) on citrus in Greece

2020 ◽  
Vol 13 (2) ◽  
pp. 93-97
Author(s):  
G.J. Stathas ◽  
Ch.F. Karipidis
Keyword(s):  
Citrus Sinensis ◽  
Maximum Rate ◽  
Scale Insect ◽  
Instar Nymph ◽  
Summer Period ◽  
Parasitoid Species ◽  
Parthenogenetic Species

SummaryPhenology and parasitism of the scale insect, Coccus pseudomagnoliarum (Kuwana) (Hemiptera: Coccomorpha: Coccidae), infesting Citrus sinensis (Rutaceae), were studied in Papagou area, in northeastern Athens, from June 2015 to June 2017. Coccus pseudomagnoliarum is a univoltine, viviparous, parthenogenetic species. It overwintered as settled 1st instar nymph on the shoots of the trees. The 2nd instar nymphs appeared between the beginning of April and the end of May, and the mature females were recorded from the beginning of May until the middle of June. The crawlers appeared between the middle of May and the middle of June and the 1st instar nymphs settled on the shoots at the end of May, where they remained during the whole summer period, winter, until the beginning of April next year. Parasitism of the scale was recorded between the beginning of May and the middle of May and reached a maximum rate of 35%. The recorded parasitoid species were Coccophagus shillongensis Hayat and Singh (Hymenoptera: Aphelinidae), Coccophagus spp. and Metaphycus dispar (Mercet) (Hymenoptera: Encyrtidae).

Cycad killer, qu'est-ce que c'est? Dieback of Macrozamia communis on the south coast of New South Wales

2021 ◽  
Vol 69 (2) ◽  
pp. 102
Author(s):  
Keith L. McDougall ◽  
Penelope J. Gullan ◽  
Phil Craven ◽  
Genevieve T. Wright ◽  
Lyn G. Cook
Keyword(s):  
New South ◽  
New South Wales ◽  
Scale Insect ◽  
South Coast ◽  
Management Tool ◽  
Sufficient Evidence ◽  
Cultivated Plants ◽  
The South ◽  
Extreme Caution ◽  
South Wales

The association of an armoured scale insect (a diaspidid) with dieback of a population of a native cycad (Macrozamia communis L.A.S.Johnson) was investigated on the south coast of New South Wales. The diaspidid was found to be undescribed but morphologically similar to oleander scale – here we call it Aspidiotus cf. nerii. It is probably native to Australasia and its current known distribution is within Murramarang National Park (MNP). Aspidiotus cf. nerii has been abundant on symptomatic M. communis at MNP over at least the past decade and has spread to new parts of the park. In population studies of infested and uninfested areas we found that, although both areas had populations with reverse J curves showing dominance of seedlings, mortality of seedlings and caulescent plants was significantly higher in infested sites. Infested areas had been burnt less frequently than uninfested areas. Fire does not appear to eradicate the diaspidid but may reduce its effects enough for plants to recover. We recommend further research into the use of fire as a management tool. Although other factors may be contributing to the severity of the dieback, we suggest there is sufficient evidence for the diaspidid to be regarded as the primary cause of dieback in M. communis in MNP, regardless of its origin. Given the occurrence of similar diaspidids on cultivated plants in botanic gardens, translocation of threatened Macrozamia species using plants grown in nurseries should be undertaken with extreme caution.

Occurrence and spread of Ceroplastes cirripediformis Comstock (Hemiptera: Coccomorpha: Coccidae) in India

Zootaxa ◽  
2021 ◽  
Vol 5039 (4) ◽  
pp. 561-570
Author(s):  
SUNIL JOSHI ◽  
HASEENA BHASKAR ◽  
V.S. AASHIQ POON ◽  
B.R. JAYANTHI MALA ◽  
P.D. KAMALA JAYANTHI ◽  
...  
Keyword(s):  
Host Range ◽  
Natural Enemies ◽  
Scale Insect ◽  
Indian Species ◽  
Broad Host Range ◽  
Management Options ◽  
Soft Scale ◽  
Plant Pest ◽  
Plant Families ◽  
First Time

The notoriously destructive and invasive soft scale, Ceroplastes cirripediformis Comstock (Hemiptera: Coccomorpha: Coccidae), is recorded for the first time from India. The scale is redescribed to facilitate its identification and information on its host range, natural enemies and distribution is provided. An identification key to the Indian species in this genus is given. Management options in the event of an outbreak are discussed briefly. The establishment of this scale insect warrants special attention in India as it is a potentially damaging plant pest and has a broad host range across many plant families.  

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.  

Aonidiella orientalis. [Distribution map].

1978 ◽  
Author(s):  
Keyword(s):  
Saudi Arabia ◽  
Sri Lanka ◽  
North America ◽  
Central America ◽  
Geographical Distribution ◽  
West Indies ◽  
Host Plants ◽  
Distribution Map ◽  
Yellow Scale ◽  
New Distribution

Abstract A new distribution map is provided for Aonidiella orientalis (Newstead) (Chrysomphalus orientalis(Newstead)) (Hemipt., Coccoidea) (Oriental Yellow Scale). Host Plants: Citrus, coconut and date palms, guava, pawpaw. Information is given on the geographical distribution in ASIA, China, India, Iran, Iraq, Malaysia, Nepal, Nicobar, Pakistan, Philippines, Saudi Arabia, Sri Lanka, AFRICA, Ethiopia, Kenya, Somalia, Sudan, Tanzania, AUSTRALIA, Greening, NORTH AMERICA, Mexico, USA, CENTRAL AMERICA and WEST INDIES.

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