V. V. Ramamurthy

V. V. Ramamurthy
Indian Agricultural Research Institute | IARI · Division of Entomology

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170
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Introduction
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Publications

Publications (170)
Article
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Stethorus aptus Kapur and Stethorus rani Kapur are two important predatory ladybird beetles preying on red spider mite, Oligonychus coffeae Nietner infesting tea in South India. This study re-describes these two predatory beetles since it was found that the original descriptions were scanty. In this study, an attempt has been made on the diagnoses...
Article
Full-text available
Begomoviruses are the largest group of plant viruses, transmitted exclusively by the whitefly, Bemisia tabaci (Gennadius) in a persistent, circulative and non-propagative manner. Begomoviruses, in association with B. tabaci cause enormous loss to world agricultural crops. Transmission, retention and circulation of begomovirus in B. tabaci are facil...
Article
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Aristobia reticulator (Fabricius, 1781) is an important coleopteran pest of guava and litchi in India and China. The draft mitochondrial genome (mitogenome) of A. reticulator is ca. 15,838 bp long and consists of 13 protein-coding genes (PCGs), 2 ribosomal RNA genes, 22 transfer RNA (tRNA) genes, and a control region (MK423971). The nucleotide comp...
Article
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Cruciferous vegetables are severely damaged by infestation of the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae). Successful utilization of RNA interference (RNAi) in insect pest management programs depends on various factors, such as target gene, mode of double-stranded RNA (dsRNA) delivery, frequency of application, and dev...
Article
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Nine species of the genus Blosyrus (Schoenherr, 1826) (Curculionidae: Entiminae) occurring in India, Sri Lanka and Myanmar are revised. The earlier known seven species are redescribed, while two new species Blosyrus marshalli sp. nov. and Blosyrus thompsoni sp. nov., are described. The subspecies spongifer upgraded to species status upon phenotypic...
Article
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Genus Atmetonychus Schoenherr (1840) known from India and Bangladesh is revised. The generic and species description has been updated through addition of measurements, description of elytral vestiture and genitalic characters. These are supported by 28 illustrations including 21 line diagrams.
Article
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The present study focuses on the variations in biology, morphology and mitochondrial cytochrome oxidase I (mtCOI) sequences of the two Indian populations of the rice weevil Sitophilus oryzae (L.) and S. zeamais (Motschulsky) (Coleoptera: Curculionidae), which occur on cereals as storage grain pests. These two species are the important pest of major...
Article
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ABSTRACT Aphids (Hemiptera: Aphidoidea) are distributed worldwide and are in the Sternorrhyncha division of the order Hemiptera. Aphids have distinctive features and significant variability in interesting biological traits. Aphididae comprises approximately 5,000 species distributed worldwide with a rapid diversification rate, which makes reliable...
Article
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We evaluated sexual dimorphism in puparia of four whitefl ies, viz., Aleyrodes sp. on Oxalis corniculata (Oxalidaceae), Bemisia tabaci (Gennadius, 1889) on Solanum melongena (Solanaceae), Dialeurodes delhiensis David & Sundararaj, 1992 on Ficus virens (Moraceae), and Trialeurodes vaporariorum (Westwood, 1856) on Phaseolus vulgaris (Fabaceae), based...
Poster
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For studies on functional genomics, small RNAs, especially microRNAs (miRNAs), have emerged as a hot topic due to their importance in cellular and developmental processes. The priority is for finding conserved and less conserved miRNA from model insect species and identifying their relationships with closely and distinctly related species. Identifi...
Article
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For studies on functional genomics, small RNAs, especially microRNAs (miRNAs), have emerged as a hot topic due to their importance in cellular and developmental processes. Identification of insect miRNAs largely depends on the availability of genomic sequences in the public domain. The large milkweed bug, Oncopeltus fasciatus (Dallas) is a hemimeta...
Article
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Nerve cord configuration and brain neurosecretory cell (NSC) characteristics were studied in adult firefly, Luciola gorhami, applying two methods, in situ and section staining. Nerve cord was of primitive type and consisted of brain, subesophageal ganglion, three thoracic and seven abdominal ganglia which were connected to each other serially throu...
Article
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The cryptorhynchine genus Strattis Pascoe originally described from Sri Lanka is recorded from India with the descriptions of three new species: S. pascoei sp. nov., S. maculatus sp. nov., and S. srilankaiensis sp. nov. from the Indian subcontinent. Strattis biguttatus is designated as type species for the genus. A key to species is provided. The c...
Article
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Eusynnada is resurrected as a valid genus of Ochyromerina and includes the type species E. plaxoides Heller and a related second new species, E. canariumi sp. nov., from Andaman Island (India) and Thailand.
Article
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The present study determined new faunastic records of Family dermestidae from Kargil. Kargil is one of the two districts of ladakh region known as Cold desert of the country (India) and falls in the transhimalayan mountain system. A total of 3 species belonging to 3 subfamilies viz., Dermestinae, Attageninae and Megatominae were recorded and descri...
Article
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Sensory structure on the labial surface of five genera of Pentatomidae (Hemiptera: Heteroptera) belonging to two subfamilies i.e. Asopinae and Pentatominae have been studied using Scanning Electron Microscopy. Three representatives of the subfamily Pentatominae (phytophagous)-Dolycoris indicus (Stal), Plautia crossota (Dallas) and Piezodorus hybner...
Article
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A Bemisia tabaci midgut protein interacts with begomoviruses and plays a role in virus transmission. Begomoviruses are a major group of plant viruses, transmitted exclusively by Bemisia tabaci (Gennadius) in a persistent circulative non-propagative manner. The information regarding molecular and cellular basis underlying begomovirus - whitefly inte...
Article
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Members of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) are pests of agricultural and horticultural crops. The species complex consists of 31 morphologically indistinguishable genetic groups or putative species. Morphometrics of developmental stages revealed that length and breadth of the wax fringe in the first, second and fourth instars va...
Article
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Northeastern India is one of the hot spots of mega biodiversity of the world. The collections of cerambycid beetles were made from the forest region of Arunachal Pradesh, India during 2008–2013. A total of 49 species of cerambycids were collected during the survey, belonging to three subfamilies and a checklist of all the species is provided. Taxon...
Article
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This study describes the morphometries and chorion microsculpturing of the eggs of 12 species of Melolonthinae and Rutelinae (Coleoptera: Scarabaeidae) belonging to seven genera. Egg size, shape, and color vary among species, and the chorion microsculpturing exhibits variation among and within genera. The length/width ratio was comparatively higher...
Article
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The biology and morphology of life stages of the whiteflies Aleyrodes sp. on Oxalis corniculata Linnaeus (Oxalidaceae), Bemisia tabaci (Gennadius, 1889) on Solanum melongena Linnaeus (Solanaceae), and Dialeurodes delhiensis David & Sundararaj, 1992 on Ficus virens Ait. (Moraceae) were studied, the latter species known only from India and its biolog...
Article
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The Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is a pest of agricultural and horticultural crops. The B. tabaci species complex consists of 36 morphologically indistinguishable putative species. This study evaluates the morphometric variations of developmental stages, puparia, and adults in three putative species of B. tabaci occurring in...
Article
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Leaf morphology, anatomy and nutritional traits of ten cotton cultivars were correlated with the whitefly, Bemisia tabaci (Gennadius) incidence. The cultivars namely, LD 327, P 59, HS 1300 and P 1752 had less incidence of B. tabaci ranging from 1.9-2.8 adults per leaf with higher density of glandular and non-glandular trichomes; in terms of length...
Article
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The parasitic lepidopteran insect, Fulgoraecia melanoleuca (Fletcher) has been reported as an ectoparasitoid of Pyrilla perpusilla (Walker) from the Indian subcontinent. For the first time, the complete morphology, field biology, egg laying behavior, larval pupal, and adult morphology, including male and female gentialic features, are described and...
Article
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A new species, Acria meyricki sp. nov. (Lepidoptera: Depressariidae: Acriinae) occurring on oil palm, is described fromIndia. The status and nomenclature of the genus is reviewed and an annotated checklist of species is given. A key to theseven species known so far from the Indian subcontinent is provided
Article
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The whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is a phloem–feeding, economically important pest of crops worldwide. In addition to direct damage, it also vectors a number of plant viruses belonging to the family Geminiviridae. Its populations differ biologically with respect to insecticide resistance, virus transmission and host r...
Article
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Spodoptera spp. (Lepidoptera: Noctuidae) are highly polyphagous pests that inflict serious damage to a wide spectrum of crops. The ability of Spodoptera spp. to thrive on diverse host plants is an adaptive advantage for their survival in the ecosystem, which is achieved by its high mobility, fecundity and capacity to develop resistance to wide spec...
Article
Full-text available
Rapid, accurate and timely identification of invasive pest insects, such as, mango leafhoppers, is important and a challenge worldwide. In this regard, DNA barcoding employing a 658 bp fragment of 5' region of the mitochondrial cytochrome oxidase I (COI) gene is an effective tool in addressing the above. In the present study, we developed DNA barco...
Data
A new species of the subfamily Trypetinae, Magnimyiolia perennifascia Singh & David, sp. nov. (Trypetini) is described from India. Two species of subfamily Phytalmiinae, Ectopomyia baculigera Hardy and Ptilona conformis Zia (Acanthonevrini) are recorded for the first time from India. An updated key to Oriental species of Magnimyiolia Shiraki is pro...
Article
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The leafhopper genus Phlogotettix Ribaut (Hemiptera: Cicadellidae: Deltocephalinae) is reviewed, and to the 10 species known so far, one new species Phlogotettix subhimalayanus sp. nov. is added and described. The latter has been analyzed for its mtCOI. Phlogotettix indicus Rao is redescribed. An annotated checklist and key to the species is also p...
Article
Full-text available
The leafhopper genus Phlogotettix Ribaut (Hemiptera: Cicadellidae: Deltocephalinae) is reviewed, and to the 10 species known so far, one new species Phlogotettix subhimalayanus sp. nov. is added and described. The latter has been analyzed for its mtCOI. Phlogotettix indicus Rao is redescribed. An annotated checklist and key to the species is also p...
Article
Full-text available
A new species of whitefly, Tetraleurodes champaiensis Dubey sp. nov. (Hemiptera: Aleyrodidae) found infesting Sporobolus heterolepis (Poaceae) in Mizoram (India) is described along with measurements, line drawings and scanning electron microscope images. The species differs from Tetraleurodes thenmozhiae Jesudasan & David in being black in color an...
Article
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Tessaratoma javanica (Thunberg) (Hemiptera: Tessaratomidae) an important sucking pest of litchi is studied for supplementing information on its biology, morphometrics of life stages and mtCOI (DNA barcodes). More details generated on the study add to the description of stages namely egg, 1 st to 5 th nymphal instars and adults. The evaluation of mo...
Article
Full-text available
The Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is a pest of agricultural and horticultural crops. It is a species complex consisting of 34 cryptic species. For the distinction of these cryptic species molecular data is extensively used, but corroboration of these with life history traits has been inadequate. In the present study life histo...
Article
Full-text available
Spodoptera spp. (Lepidoptera: Noctuidae) are highly polyphagous pests that inflict serious damage to a wide spectrum of crops. The ability of Spodoptera spp. to thrive on diverse host plants is an adaptive advantage for their survival in the ecosystem, which is achieved by its high mobility, fecundity and capacity to develop resistance to wide spec...
Book
Full-text available
Cereal crops are the major staple food producers of the world. The global food security, therefore almost entirely depends on cereals. Insects play a vital role in cereal production system. Among the insects, beetles belonging to the Order Coleoptera are the single largest group in the whole of Animal Kingdom. Naturally, it is no surprise that beet...
Article
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Kargil is one of the two districts of Ladakh region known as Cold desert of the country (India) and falls in the Transhimalayan Mountain system. This study is the very first attempt to study Staphylinidae (Rove beetles), Scarabaeidae (dung beetles), Dermestidae (carpet beetles) and curculionidae (weevils) from Kargil district. A total of 6 Taxa bel...
Article
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The Cyphicerini weevil genus Hemerus Marshall (Curculionidae, Entiminae) is herein reviewed, and its lone species, Hemerus virens Marshall is redescribed. The salient taxonomic characters at the genus and species level are described and illustrated. In 1944, Marshall established the monotypic genus Hemerus based on Hemerus virens Marshall. This sho...
Article
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ABstRAct Accurate and timely identification of invasive insect pests underpins most biological endeav-ors ranging from biodiversity estimation to insect pest management. In this regard, identifica-tion of thrips, an invasive insect pest is important and challenging due to their complex life cycles, parthenogenetic mode of reproduction, sex and colo...
Article
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The lac insects belong to the genus Kerria (Hemiptera: Coccoidea: Kerriidae) and are commercially exploited worldwide for the production of lac, which comes from their waxy test and has diverse industrial applications. The insects are maintained by the Indian Institute of Natural Resins and Gums as distinctive lines that are cultivated and commerci...
Article
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The diamondback moth, Plutella xylostella (L.) (Lepidoptera: Yponomeutidae) is a serious pest of crucifers, worldwide, and has developed high levels of resistance to insecticides including Bacillus thuringiensis (Bt). This serious situation requires the identification of non-chemical, alternate, futuristic pest management strategies, which might in...
Article
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A second species of Megorchestes Kojima, M. deccanensis sp. nov., is described from India and a key to the two species is provided.
Article
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A new species, Cofana trilobata sp. nov., is described and illustrated from Meghalaya, India along with illustrations of Cofana lineata (Distant, 1908) which it closely resembles. Diagnostic characters are given to separate these species, including a modi􀂿 ed portion of the key by KRISHNANKUTTY & VIRAKTAMATH (2008) to Cofana of India.
Article
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A new braconid, Macrocentrus delhiensis sp. nov., is described and illustrated from New Delhi, India. Specimens were collected on weeds near a mango orchard. Including this new species, seven species of Macrocentrus Curtis 1833 are known from India.
Article
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This study analyzes the intraspecific variations in the morphology of Odontodes aleuca Guenée, a complex noctuid species distributed in the Oriental region. This variation is explicit in the forewing coloring patterns. It was observed that the specimens fall under five forewing pattern groups. Despite these remarkable differences in wing pattern, n...
Article
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ABSTRACT: Morphological and molecular variations of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) oncotton cultivarshavingvaryingtrichomedensitywereevaluated atNewDelhi, India.Thestudy evaluates the role of host plant nature on puparia and putative species groups of the B. tabaci species complex. More speciÞcally, the study was done to explor...
Article
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MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression either bymRNAcleavage or by translational repression. They play an important role in the development and physiology of organisms. It is difÞcult to experimentally identify miRNAs and characterize their spatial and temporal expressions in insects or in any organisms. The cotto...
Article
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A new Cryptorhynchinae weevil Viraktamathia gen. nov. and srinivasa sp. nov. from India is described and illustrated. This genus is unique among the Cryptorhynchinae in the concavity of the ventrite 1 combined with the character of the pair of knobs on the uncus of the hind tibia.Se describe e ilustra Viraktamathia gen. nov, un nuevo género de picu...
Article
Full-text available
The leafhopper genus Phlogotettix Ribaut (Hemiptera: Cicadellidae: Deltocephalinae) is reviewed, and to the 10 species known so far, one new species Phlogotettix subhimalayanus sp. nov. is added and described. The latter has been analyzed for its mtCOI. Phlogotettix indicus Rao is redescribed. An annotated checklist and key to the species is also p...
Conference Paper
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The green chafer beetle, ChilolobaacutaWiedemann, widely distributed in the Indian subcontinent belongs to PleurostictiScarabaeidae that comprises of phytophagous scarab clade. It is an occasional pest of cereals and millets where the adults feed on the pollen and damage the grains. The immature stages viz., larvae are harmless and feedon the decay...
Article
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A new species of Eriophyidae (Acari: Prostigmata: E riophyoidea) mite, Aceria tripuraensis n. sp., is described from the closed bud galls of Hibiscus macrophyllus Roxb. ex Hornem. (Malvaceae) in India. Aceria tripuraensis n. sp. is distinguished by having a prodorsal shield with distinct rounded lobes on the postero-lateral margins and two pairs of...
Article
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The intraspecific variations in the morphology of populations of cotton mealybug Phenacoccus solenopsis Tinsley (Pseudococcidae: Hemiptera) from cotton, okra and hibiscus were analyzed. The principal component analysis and discriminant functional analysis revealed a wide range of morphological variations in the critical taxonomic characters among t...
Article
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Cloning and sequence characterization of four important genes (actin, ultra spiracle proteins, tyrosine hydroxylase and vATPase B) from Plutella xylostella are compared with other species of Lepidoptera. Sequence analyses showed variation of the genes within Lepidoptera and the number of parsimony informative sites observed in nucleotide sequences...