scholarly journals Sex, males, and hermaphrodites in the scale insect Icerya purchasi

Evolution ◽  
2021 ◽  
Author(s):  
Andrew J. Mongue ◽  
Sozos Michaelides ◽  
Oliver Coombe ◽  
Alejandro Tena ◽  
Dong‐Soon Kim ◽  
...  
Keyword(s):  
Scale Insect ◽  
Icerya Purchasi

scholarly journals Identification guide to species in the scale insect tribe Iceryini (Coccoidea: Monophlebidae)

Zootaxa ◽  
2008 ◽  
Vol 1803 (1) ◽  
pp. 1 ◽  
Author(s):  
CORINNE M. UNRUH ◽  
PENNY J. GULLAN
Keyword(s):  
Scale Insect ◽  
The Other ◽  
Type Material ◽  
Morphological Evidence ◽  
Phylogenetic Hypothesis ◽  
Comprehensive Review ◽  
Adult Females ◽  
Identification Guide ◽  
Icerya Purchasi ◽  
Molecular Phylogenetic

We recently revised the scale insect tribe Iceryini (Coccoidea: Monophlebidae) based on a molecular phylogenetic hypothesis and supporting morphological evidence. As a result of this revision, we proposed new generic concepts that required significant reorganization of species in three of the five iceryine genera: Crypticerya Cockerell, Gigantococcus Pesson & Bielenin and Icerya Signoret. The other two genera, Echinicerya Morrison and Gueriniella Fernald, remain unchanged. Here we discuss taxonomic characters important for iceryine identification and provide a comprehensive review of all described iceryine species. We include keys to the genera and to the species of each genus of Iceryini based on features of the adult females. We present new diagnoses for all the species for which type material was available for examination and summarize original descriptions for species for which we were unable to examine material. We designate lectotypes for the following species names (valid name given in parentheses): Llaveia abrahami Newstead (C. abrahami), Icerya brasiliensis Hempel (C. brasiliensis), Icerya colimensis Cockerell (C. colimensis), Icerya genistae Hempel (C. genistae), Icerya (Crypticerya) littoralis Cockerell (C. littoralis), Icerya littoralis mimosae Cockerell (C. littoralis),Icerya littoralis tonilensis Cockerell (C. littoralis), Crypticerya rosae mexicana Cockerell & Parrott (C. mexicana), Icerya minima Morrison (C. minima), Icerya montserratensis Riley & Howard (C. montserratensis), Palaeococcus morrilli Cockerell (C. morrilli), Icerya palmeri Riley & Howard (C. palmeri), Icerya rileyi Cockerell (C. rileyi), Icerya rileyi larreae Cockerell (C. rileyi), Steatococcus tabernicolus Ferris (C. tabernicola), Icerya (Crypticerya) townsendi Cockerell (C. townsendi), Icerya (Crypticerya) townsendi plucheae Cockerell (C. townsendi), Icerya zeteki Cockerell (C. zeteki), Icerya seychellarum albolutea Cockerell (Gi. alboluteus), Crypticerya bicolor DeLotto (Gi. bicolor), Icerya brachystegiae Newstead (Gi. brachystegiae), Palaeococcus cajani Newstead (Gi. cajani), Palaeococcus caudata Newstead (Gi. caudatus), Icerya euphorbiae Brain (Gi. euphorbiae), Aspidoproctus gowdeyi Newstead (Gi. gowdeyi), Icerya longisetosa Newstead (Gi. longisetosus), Icerya nigroareolata Newstead (Gi. nigroareolatus), Icerya sulfurea pattersoni Newstead (Gi. pattersoni), Palaeococcus theobromae Newstead (Gi. theobromae), Crossotosoma aegyptiacum Douglas (I. aegyptiaca), Icerya rosae australis Maskell (I. australis), Icerya crocea Green (I. crocea), Icerya formicarum Newstead (I. formicarum), Icerya jacobsoni Green (I. jacobsoni), Icerya koebelei Maskell (I. koebelei), Icerya minor Green (I. minor), Icerya (Crypticerya) nuda Green (I. nuda), Icerya nudata Maskell (I. nudata), Icerya hyperici Froggatt (I. nudata), Palaeococcus dymocki Froggatt (I. nudata), Icerya pilosa Green (I. pilosa), Icerya purchasi citriperda Hempel (I. purchasi), Icerya purchasi crawii Cockerell (I. purchasi), Icerya purchasi maskelli Cockerell (I. purchasi), and Icerya schrottkyi Hempel (I. schrottkyi).

scholarly journals Optically Active Acetotriglycerides from the Lipids of a Scale Insect, Icerya purchasi MASKELL (Hemiptera: Margarodidae)

1974 ◽  
Vol 18 (3) ◽  
pp. 121-125 ◽  
Author(s):  
Akira HASHIMOTO ◽  
Shozaburo KITAOKA
Keyword(s):  
Scale Insect ◽  
Optically Active ◽  
Icerya Purchasi

scholarly journals Sex, males, and hermaphrodites in the scale insect Icerya purchasi

2020 ◽  
Author(s):  
Andrew J. Mongue ◽  
Sozos Michaelides ◽  
Oliver Coombe ◽  
Alejandro Tena ◽  
Dong-Soon Kim ◽  
...  
Keyword(s):  
Mating System ◽  
Population Genetic ◽  
Evolutionary Dynamics ◽  
Large Population ◽  
Scale Insect ◽  
Population Genetic Analysis ◽  
Icerya Purchasi ◽  
Self Fertilization ◽  
Rare Males ◽  
First Time

AbstractAndrodioecy (the coexistence of males and hermaphrodites) is a rare mating system for which the evolutionary dynamics are poorly understood. Here we study the only presumed case of androdioecy in insects, found in the cottony cushion scale, Icerya purchasi. In this species, female-like hermaphrodites have been shown to produce sperm and self-fertilize. However, rare males are sometimes observed too. In a large population-genetic analysis, we show for the first time that although self-fertilization appears to be the primary mode of reproduction, rare outbreeding events between males and hermaphrodites do occur, and we thereby confirm androdioecy as the mating system of I. purchasi. Thus, this insect appears to have the colonization advantages of a selfing organism while also benefitting from periodic reintroduction of genetic variation through outbreeding with males.

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).

scholarly journals Genome assembly and methylome analysis of the white wax scale insect provides insight into sexual differentiation of metamorphosis in hexapods

2021 ◽  
Author(s):  
Hang Chen ◽  
Qin Lu ◽  
Xiaoming Chen ◽  
Xiaofei Ling ◽  
Pengfei Liu ◽  
...  
Keyword(s):  
Genome Assembly ◽  
Sexual Differentiation ◽  
Scale Insect ◽  
Methylome Analysis ◽  
Insight Into

ChemInform Abstract: Comparison of the Bioactive Secondary Metabolites from the Scale Insect Pathogens, Anamorph Paecilomyces cinnamomeus, and Teleomorph Torrubiella luteorostrata

ChemInform ◽  
2008 ◽  
Vol 39 (8) ◽  
Author(s):  
Masahiko Isaka ◽  
Somporn Palasarn ◽  
Kanokarn Kocharin ◽  
Nigel L. Hywel-Jones
Keyword(s):  
Secondary Metabolites ◽  
Scale Insect ◽  
Bioactive Secondary Metabolites ◽  
Insect Pathogens

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.  

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