Two species of whitefly and six species of scale insect (Hemiptera: Aleyrodidae and Coccoidea), new for Antigua, Lesser Antilles

2018 ◽  
Vol 154 (1) ◽  
pp. 53-59
Author(s):  
Chris Malumphy
Keyword(s):  
Host Range ◽  
Geographical Distribution ◽  
Scale Insect ◽  
Economic Importance ◽  
Scale Insects ◽  
Lesser Antilles ◽  
The Caribbean ◽  
First Time

Two species of whitefly and six species of scale insect are recorded for the first time from the island of Antigua, Antigua and Barbuda, Lesser Antilles, Caribbean: Aleyrodidae – Dialeurodes schefflerae Hodges & Dooley and Minutaleyrodes minuta (Singh); Coccidae – Milviscutulus mangiferae (Green); Conchaspididae – Conchaspis angraeci Cockerell; Diaspididae – Duplachionaspis divergens (Green), Mycetaspis personata (Comstock), Parlatoria proteus (Curtis); and Pseudococcidae – Ferrisia dasylirii (Cockerell). The geographical distribution, host range and economic importance of each of the whiteflies and scale insects are summarised. Three of these species, D. schefflerae, M. minuta and D. divergens are native to Asia and have been spreading in the Caribbean in recent years, most probably with plant trade.

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.  

Pratylenchus in sugarcane: a diminishing problem?

2021 ◽  
pp. 66-72
Author(s):  
Prabashnie Ramouthar
Keyword(s):  
South Africa ◽  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Economic Importance ◽  
Nematode Management ◽  
Pratylenchus Brachyurus ◽  
Damage Symptoms

Abstract This chapter focuses on the economic importance, host range, geographical distribution, damage symptoms and biology and life cycle of Pratylenchus brachyurus, P. neglectus, P. scribneri and P. zeae infesting sugarcane in South Africa. Information on their interactions with other nematodes and pathogens, the efficacy and optimization of some recommended integrated nematode management programmes and future nematode research requirements are also presented.

Root-knot and reniform nematodes: double trouble for soybeans in the southern United States.

2021 ◽  
pp. 125-131
Author(s):  
Edward J. Sikora
Keyword(s):  
United States ◽  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Management Practices ◽  
Economic Importance ◽  
Southern United States ◽  
Rotylenchulus Reniformis ◽  
Future Outlook ◽  
Reniform Nematodes

Abstract This chapter focuses on the economic importance, host range, geographical distribution, symptoms of damage and biology and life cycle of root-knot and reniform nematodes (Meloidogyne spp. and Rotylenchulus reniformis) infesting soyabeans in southern USA. Some information on the efficacy and optimization of some recommended integrated nematode management practices and future outlook and research requirements are also presented.

Mitigating a galling problem in California's carrot production.

2021 ◽  
pp. 284-289
Author(s):  
J. Ole Becker
Keyword(s):  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Meloidogyne Incognita ◽  
Integrated Management ◽  
Economic Importance ◽  
Future Research ◽  
Future Developments ◽  
Management Optimization ◽  
Damage Symptoms

Abstract This chapter discusses the economic importance, geographical distribution, host range, damage symptoms, biology and life cycle, interactions with other nematodes and pathogens, recommended integrated management, and management optimization of Meloidogyne incognita infesting carrots in California, USA. Future research requirements and future developments are also mentioned.

A systematic study of the Australian species of the genus Haemaphysalis Koch (Acarina: Ixodidae)

1963 ◽  
Vol 11 (1) ◽  
pp. 35 ◽  
Author(s):  
FHS Roberts
Keyword(s):  
New Species ◽  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Systematic Study ◽  
Northern Territory ◽  
Australian Species ◽  
First Time ◽  
Host List

A systematic study has been made of the species of Haemaphysalis occurring in Australia. Six species were recognized in the material examined, namely H. humerosa, H. ratti, H. bremneri, H. lagostrophi, H. bispinosa, and H. bancrofti. Two of these, H. lagostrophi and H. bremneri, are new species, and H. ratti is recorded from Australia for the first time. H. novaeguineae recorded by Nuttall and Warburton (1915) from Queensland and the Northern Territory was not seen. A detailed description with appropriate figures is given for the known stages in the life cycle of each species, together with data on host range and geographical distribution. Keys are presented for the males, females, and nymphs and a classified host list has been included.

Pratylenchus vulnus going nuts in California.

2021 ◽  
pp. 231-237
Author(s):  
Andreas Westphal
Keyword(s):  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Integrated Management ◽  
Economic Importance ◽  
Future Research ◽  
Future Developments ◽  
Pratylenchus Vulnus ◽  
Management Optimization ◽  
Damage Symptoms

Abstract This chapter discusses the economic importance, geographical distribution, host range, damage symptoms, biology and life cycle, interactions with other nematodes and pathogens, recommended integrated management, and management optimization of Pratylenchus vulnus infesting nut crops in California, USA. Future research requirements and future developments are also mentioned.

scholarly journals Scale insect host ranges are broader in the tropics

2015 ◽  
Vol 11 (12) ◽  
pp. 20150924 ◽  
Author(s):  
Nate B. Hardy ◽  
Daniel A. Peterson ◽  
Benjamin B. Normark
Keyword(s):  
Host Range ◽  
General Pattern ◽  
Ecological Factors ◽  
Plant Species Richness ◽  
Scale Insect ◽  
Scale Insects ◽  
Explanatory Factors ◽  
Trade Offs ◽  
Host Plant Specificity ◽  
The Tropics

The specificity of the interactions between plants and their consumers varies considerably. The evolutionary and ecological factors underlying this variation are unclear. Several potential explanatory factors vary with latitude, for example plant species richness and the intensity of herbivory. Here, we use comparative phylogenetic methods to test the effect of latitude on host range in scale insects. We find that, on average, scale insects that occur in lower latitudes are more polyphagous. This result is at odds with the general pattern of greater host-plant specificity of insects in the tropics. We propose that this disparity reflects a high cost for host specificity in scale insects, stemming from unusual aspects of scale insect life history, for example, passive wind-driven dispersal. More broadly, the strong evidence for pervasive effects of geography on host range across insect groups stands in stark contrast to the weak evidence for constraints on host range due to genetic trade-offs.

scholarly journals Coccidae, Pseudococcidae, Ortheziidae, and Monophlebidae (Hemiptera: Coccoidea) of Espírito Santo, Brazil

2007 ◽  
Vol 7 (3) ◽  
pp. 61-65 ◽  
Author(s):  
Mark Paul Culik ◽  
David dos Santos Martins ◽  
José Aires Ventura ◽  
Ana Lúcia Benfatti Gonzalez Peronti ◽  
Penny Jean Gullan ◽  
...  
Keyword(s):  
First Record ◽  
Scale Insect ◽  
Scale Insects ◽  
Insect Species ◽  
Espírito Santo ◽  
Pseudococcus Longispinus ◽  
Coccus Viridis ◽  
Phenacoccus Madeirensis ◽  
Espirito Santo ◽  
First Time

New plant hosts are recorded for nine scale insect species recently collected in Espírito Santo, Brazil, and eleven scale insect species are recorded for the first time from the state: Ceroplastes floridensis Comstock, Coccus longulus (Douglas), Coccus viridis (Green), Eucalymnatus tesselatus (Signoret), Pseudokermes sp., Saissetia coffeae (Walker), Phenacoccus madeirensis Green, Pseudococcus jackbeardsleyi Gimpel & Miller, Pseudococcus longispinus (Targioni Tozzetti), Icerya purchasi Maskell, and Icerya genistae Hempel. This is also the first record of Co. longulus in Brazil. Information on the host plants and geographic distribution of the 26 species of scale insects of the families Coccidae, Pseudococcidae, Ortheziidae, and Monophlebidae, currently known from Espírito Santo is provided.

Maize and root-knot nematodes: a problematic, deep-seated association.

2021 ◽  
pp. 41-47
Author(s):  
Hendrika Fourie
Keyword(s):  
South Africa ◽  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Meloidogyne Incognita ◽  
Management Strategies ◽  
Economic Importance ◽  
Future Research ◽  
Root Knot Nematodes ◽  
Damage Symptoms

Abstract This paper focuses on the economic importance, host range, geographical distribution, damage symptoms and biology and life cycle of the root knot nematodes Meloidogyne incognita and M. javanica infesting maize in South Africa. Information on their interactions with other nematodes and pathogens, recommended integrated nematode management strategies and future research requirements are also discussed.

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