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Jae-cheon Sohn - One of the best experts on this subject based on the ideXlab platform.
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Eidophasia assmanni sp. nov., the first alpine representative of the genus, detected in the Russian Altai Mountains (Lepidoptera, Plutellidae).
ZooKeys, 2020Co-Authors: Peter Huemer, Jae-cheon SohnAbstract:Eidophasia assmannisp. nov., a new species of Plutellidae from the alpine zone of Russian Altai Mountains, is described from diagnostic morphology and DNA barcodes. Male adult and genitalia are illustrated, whereas the female sex remains unknown. The species inhabits alpine scree with patchy herbaceous plants and is considered as possible endemic species of the Altai Mountains. An updated checklist of the 13 global Eidophasia Stephens, 1842 species is provided. The likely polyphyly of the genus is discussed from molecular data of the barcode region of the mt COI gene.
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Redescription of Eidophasia syenitella (Herrich-Schaffer, [1854]) (Lepidoptera, Plutellidae).
Zootaxa, 2015Co-Authors: Edward Baraniak, Jae-cheon SohnAbstract:The Holarctic genus Eidophasia Stephens, 1842 belongs to Plutellidae (Kyrki 1984, 1990; Dugdale et al. 1999). The genus currently includes 12 species (Sohn & Baraniak in press) which are heterogeneous in morphologies. In fact, there have been no convincing synapomorphies proposed for Eidophasia. Eidophasia syenitella (Herrich-Schaffer, [1854]) is one of the European congeners. Herrich-Schaffer (1853-1855) associated E. syenitella with E. messingiella (Fisher von Roslerstamm, 1840), based two superficial similarities, i.e. a slim body and the presence of scale tuft on the 2nd segment of the labial palpus. Friese (1966) synonymized E. concinnella Christoph, 1888 and E. zukowskyi Amsel, 1939 under E. syenitella. After examining various local populations of E. syenitella from Europe, we found Friese's synonymy unwarranted. Eidophasia syenitella has been characterized with only its external appearance. There is yet no description of the genitalia available for the species. This gives a challenge in evaluating the taxonomic status of E. syenitella and its two putative synonyms. This issue needs further attention and will be scrutinized in separate papers. Little is known about the biology of E. syenitella. The known larval host records suggest that this species is exclusively associated with a genus of Brassicaceae, Arabis or rockcress. The aim of this paper is to re-describe the species with the genitalia of both sexes for the first time.
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a catalogue of the type specimens of yponomeutoidea lepidoptera in the museum of comparative zoology with revised status ofpluteloptera ochrella
Breviora, 2015Co-Authors: Jae-cheon SohnAbstract:Abstract This catalogue includes a total of 31 species of Yponomeutoidea for which all or a part of type series have been deposited in the collection of the Museum of Comparative Zoology, Harvard University: 10 Argyresthiidae, eight Lyonetiidae, seven Ypsolophidae, two Yponomeutidae, two Plutellidae, one Heliodinidae, and one whose systematic position remains uncertain. Of these, the primary type specimens of Yponomeutoidea comprise six holotypes, 11 lectotypes, and one species described from syntypes. All primary and secondary type specimens of Yponomeutoidea from the collection are catalogued with annotations of their original citations, collecting data, specimen condition, current taxonomic status, and if necessary, notes on uncertainty involving the type series. Lectotypes are designated for 12 species from the collection of the Museum of Comparative Zoology, including eight argyresthiids (Argyresthia altissimella Chambers, 1877; Argyresthia austerella Zeller, 1873; Argyresthia belangerella Chambers, ...
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A taxonomic review of Stachyotis (Lepidoptera: Yponomeutoidea: Plutellidae) with description of a new species from China
Florida Entomologist, 2014Co-Authors: Jae-cheon SohnAbstract:The genus Stachyotis (Lepidoptera, Yponomeutoidea, Plutellidae) is reviewed by re-description of the type species, Stachyotis epichrysa Meyrick from Sri Lanka and description of a new species, S. chunshengwui sp. nov. from China. These 2 congeners are distinguished from each other in their forewing patterns and male genitalia. The diagnostic features of Stachyotis are proposed from the forewing venation, structures of the second sternite and the tergites, and the male genitalia. A possible association of Stachyotis and Orthenchesgroup is discussed.
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Representative adult habitus images of all yponomeutoid families and subfamilies recognized in this study.
2013Co-Authors: Jae-cheon Sohn, Jerome C. Regier, Charles Mitter, Donald Davis, Jean-françois Landry, Andreas Zwick, Michael P. CummingsAbstract:Scale bar = 5 mm. A. Glyphipterigidae: Glyphipteriginae, Glyphipterix bifasciata (Walsingham); B. Glyphipterigidae: Acrolepiinae, Acrolepia xylophragma (Meyrick); C. Glyphipterigidae: Orthoteliinae, Orthotelia sparganella (Thunberg); D. Plutellidae, Plutella xylostella (Linnaeus); E. Ypsolophidae: Ypsolophinae, Ypsolopha blandella (Christoph); F. Ypsolophidae: Ochsenheimeriinae, Ochsenheimeria vacculella Fisher von Roeslerstamm; G. Yponomeutidae: Yponomeutinae, Yponomeuta padellus Linnaeus; H. Yponomeutidae: Saridoscelinae, Saridoscelis kodamai Moriuti; I. Argyresthiidae, Argyresthia brockeella (Hübner); J. Lyonetiidae: Lyonetiinae, Lyonetia ledi Wocke; K. Lyonetiidae: Cemiostominae, Leucoptera spartifoliella (Hübner); L. Praydidae, Prays fraxinella (Bjerkander); M. Attevidae, Atteva aurea (Fitch); N. Heliodinidae, Embola ciccella (Barnes et Busck); O. Bedelliidae, Bedellia somnulentella (Zeller); P. Scythropiidae stat. rev., Scythropia crataegella (Linnaeus).
Javad Karimzadeh - One of the best experts on this subject based on the ideXlab platform.
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Assessment of naturally occurring parasitism of diamondback moth in field using recruitment method
Archives Of Phytopathology And Plant Protection, 2014Co-Authors: Maryam Afiunizadeh, Javad KarimzadehAbstract:The recent major outbreaks of diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae), in cruciferous plants in Iran has led to attempts for sustainable pest management strategies, mainly based on the natural enemies. The present study aimed to investigate naturally occurring parasitism of P. xylostella in cabbage and cauliflower fields of central Iran. For this purpose, field studies were performed to identify parasitoids of P. xylostella, and to evaluate percentage parasitism of P. xylostella using the recruitment method in main cabbage-growing areas of Isfahan province in 2009. In present study, seven species of parasitoid wasps (five larval and two pupal parasitoids) and two species of hyperparasitoid wasps were determined. The parasitoids included the braconids Cotesia vestalis (Kurdjumov), Bracon hebetor Say and Apanteles sp., the ichneumonid Diadegma semiclausum (Hellen), and the eulophid Oomyzus sokolowskii (Kurdjumov) as larval parasitoids, and the ichneumonids Diadromus collaris (Graven...
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The strategy of trap cropping for reducing the populations of diamondback moth in common cabbage
Archives of Phytopathology and Plant Protection, 2014Co-Authors: S. Daniarzadeh, Javad Karimzadeh, Alireza JalalizandAbstract:Plutella xylostella (L.) (Lepidoptera, Plutellidae) is one of the most destructive pests of cruciferous crops throughout the world. In recent years, diamondback moth has had outbreak in Isfahan province and has caused many damages. The use of usual insecticides in multiple suggested doses was not able to control this pest. Furthermore, high residue of used poisons in crops such as cabbage has multiplied the importance of studying different methods of controlling this pest. One of the alternative methods for controlling diamondback moth is trap cropping that has been the conventional tool of pest management and in recent years the use of it has increased considerably. The goal of this research is to study and compare the several host plants’ efficiency (as trap crop) in decreasing population of this important pest in main crop. Following the mentioned subjects, cabbage as main crop and white mustard, Chinese cabbage, turnip and black radish as trap crops in Pirbakran in Isfahan province have been sampled e...
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Sublethal effects of pyriproxyfen, a juvenile hormone analogue, on Plutella xylostella (Lepidoptera: Plutellidae): life table study
Archives Of Phytopathology And Plant Protection, 2012Co-Authors: Marzieh Alizadeh, Javad Karimzadeh, G. R. Rassoulian, H Farazmand, V. Hoseini-naveh, Hamidreza PourianAbstract:The sublethal effects of pyriproxyfen (PYR, a juvenile hormone analogue) were investigated for two consecutive generations on life-history parameters, such as developmental time, pupal weight, fecundity, fertility and longevity of the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae). After topical application bioassay of third instar larvae, the LC25 and LC50 values (as sublethal doses) were determined to be 1.49 and 2.01 μg/μl, respectively. The results showed that the egg incubation period, larval and pupal duration times and oviposition period were increased in treated groups compared with the control (treated with distilled water). Pupal weight, adult longevity, fecundity and fertility were significantly reduced in the treatment groups compared with the control. Using the age-stage, two-sex life table analysis, we found that the intrinsic rate of increase (r), finite rate of increase (λ), gross reproduction rate (GRR) and net reproductive rate (R 0) significantly decreased while t...
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bottom up effect of different host plants on plutella xylostella lepidoptera Plutellidae a life table study on canola
Journal of Economic Entomology, 2010Co-Authors: Mahmoud Soufbaf, Yaghoub Fathipour, Javad Karimzadeh, Myron P ZaluckiAbstract:ABSTRACT The effects of 10 commercial canola, Brassica napus L., cultivars widely grown in Iran—‘SLM046,’ ‘Opera,’ ‘Okapi,’ ‘RGS003,’ ‘Modena,’ ‘Sarigol,’ ‘Zarfam,’ ‘Licord,’ ‘Hayula420,’ and ‘Talaye’—on the demographic parameters of diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae), were determined. The experiments were conducted in a growth chamber at 25 ± 1°C, 65 ± 2% RH, and aphotoperiod of 16:8 (L:D) h. The comparison of intrinsic rate of natural increase (rm ), net reproductive rate (R0), and the survival rate of adult stage of P. xylostella on 10 canola cultivars suggested that this pest performed best on SLM046. The rm value of P. xylostella ranged between 0.241 on RGS003 and 0.304 on SLM046. The R0, finite rate of increase (λ), mean generation time (T), and doubling time (DT) values of P. xylostella on SLM046 were 52, 1.35, 13.4, and 2.35 and on RGS003 were 31, 1.27, 14.4, and 2.94, respectively. The Weibull model adequately described the shape of the survivorship curve of adult...
Rosilda Mara Mussury - One of the best experts on this subject based on the ideXlab platform.
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Alibertia spp. (Rubiaceae) Extracts Interfere with the Development and Reproduction of Plutella xylostella L. (Lepidoptera: Plutellidae)
Gesunde Pflanzen, 2020Co-Authors: Rosicléia Matias Da Silva, Letícia Paula Santos, Gabriela Brito Silva, Leandro Oliveira Miranda, Claudemir Antonio Garcia Fioratti, Silvana De Paula Quintão Scalon, Munir Mauad, Rosilda Mara MussuryAbstract:Considering that some bioactive compounds are more soluble in ethanol than in water, we tried to evaluate the bioactivity of the ethanolic extracts of Alibertia edulis, Alibertia intermedia and Alibertia sessilis leaves at concentrations of 1 and 3% on the biological characteristics of parental and F1 generations of Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae). Thus, the ethanolic extracts of Alibertia edulis, Alibertia intermedia and Alibertia sessilis were tested on the biological characteristics of P. xylostella in the parental generation and their effects on the F1 generation. In general, the species tested showed significant results on the biological characteristics of P. xylostella . Pupal weight was affected by all plant species. A. edulis extracts reduced egg survival on the parental and F1 generation of P. xylostella while in F1 generation reduced the longevity of females. Larval duration, pupal weight and survival of eggs on parental generation were reduced by A. intermedia extracts. In Anbetracht der Tatsache, dass einige bioaktive Verbindungen in Ethanol besser löslich sind als in Wasser, wurde in der vorliegenden Studie versucht, die Wirksamkeit des ethanolischen Blattextrakts von drei Arten der Gattung Alibertia auf die Fortpflanzung und das Wachstum der Kohlmotte Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae) zu analysieren. Untersucht wurde die Wirkung von 1 %- und 3 %-igen Lösungen des ethanolischen Blatterextrakts der Arten Alibertia edulis (Rich.) A. Rich., Alibertia intermedia (Mart.) und Alibertia sessilis (Vell.) K. Schum. auf Parental- und F1-Generationen von P. xylostella . Im Allgemeinen konnten signifikante Einflüsse aller drei getesteten Pflanzenarten auf die biologischen Eigenschaften von P. xylostella festgestellt werden. Das Puppengewicht wurde von allen Pflanzenarten beeinflusst. Unter Anwendung von A.-edulis -Extrakten sank die Lebenserwartung der weiblichen Tiere der F1-Generation und verminderte das Überleben der Eier der Eltern- und F1-Generation von P. xylostella . Die Lebenserwartung der Larven, das Puppengewicht und das Überleben der Eier bei der Elterngeneration wurden durch A.-intermedia- Extrakte verringert.
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Alibertia spp. (Rubiaceae) Extracts Interfere with the Development and Reproduction of Plutella xylostella L. (Lepidoptera: Plutellidae)
Gesunde Pflanzen, 2020Co-Authors: Rosicléia Matias Da Silva, Leandro Oliveira Miranda, Claudemir Antonio Garcia Fioratti, Munir Mauad, Letícia Paula Dos Santos, Gabriela Brito Silva, Silvana De Paula Quintão Scalon, Rosilda Mara MussuryAbstract:Considering that some bioactive compounds are more soluble in ethanol than in water, we tried to evaluate the bioactivity of the ethanolic extracts of Alibertia edulis, Alibertia intermedia and Alibertia sessilis leaves at concentrations of 1 and 3% on the biological characteristics of parental and F1 generations of Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae). Thus, the ethanolic extracts of Alibertia edulis, Alibertia intermedia and Alibertia sessilis were tested on the biological characteristics of P. xylostella in the parental generation and their effects on the F1 generation. In general, the species tested showed significant results on the biological characteristics of P. xylostella. Pupal weight was affected by all plant species. A. edulis extracts reduced egg survival on the parental and F1 generation of P. xylostella while in F1 generation reduced the longevity of females. Larval duration, pupal weight and survival of eggs on parental generation were reduced by A. intermedia extracts.
B. A. Keddie - One of the best experts on this subject based on the ideXlab platform.
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resistance of some cultivated brassicaceae to infestations by plutella xylostella lepidoptera Plutellidae
Journal of Economic Entomology, 2007Co-Authors: Muhammad Sarfraz, L M Dosdall, B. A. KeddieAbstract:Abstract Selecting insect-resistant plant varieties is a key component of integrated management programs of oligophagous pests such as diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), but rigorous research on important life history parameters of P. xylostella in relation to host plant resistance is rare. We evaluated six conventional brassicaceous species, namely, Brassica napus L. ‘Q2’, B. rapa L., B. juncea (L.) Czern., B. carinata L., B. oleracea L., and Sinapis alba L., and two herbicide-tolerant cultivars, namely, B. napus ‘Liberty’ and B. napus ‘Conquest’ for their resistance against P. xylostella. Brassicaceae species and cultivars varied considerably in their susceptibilities as hosts for P. xylostella. Sinapis alba and B. rapa plants were highly preferred by ovipositing females and trichome density on adaxial and abaxial leaf surfaces had nonsignificant effects on P. xylostella oviposition. Larval survival was similar on the genotypes we tested, but host plants significantly...
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Conserving the efficacy of insecticides against Plutella xylostella (L.) (Lep., Plutellidae).
Journal of Applied Entomology, 2005Co-Authors: Muhammad Sarfraz, B. A. KeddieAbstract:The diamondback moth (DBM), Plutella xylostella (L.) (Lep., Plutellidae), is one of the most destructive insect pests of crucifers worldwide. It was the first crop insect reported to be resistant to DDT and now in many crucifer-producing regions it has shown significant resistance to almost every insecticide applied in field including biopesticides such as crystal toxins from Bacillus thuringiensis and spinosyns from Saccharopolyspora spinosa. In certain parts of the world, economical production of crucifers has become almost impossible because of its resistance to insecticides and resulting control failure. A coordinated resistance management program needs to be implemented with the involvement of pesticide industry, local pesticide regulatory authorities, scientists and farmers. The judicious use of chemicals in conjunction with other control measures (e.g. biological control agents, resistant varieties, proper fertilization rates) is the best way to manage DBM and other pests of cruciferous crops. Introduction of glucosinolate-sulphatase inhibitors as plant-incorporated-products or sprayable material may also lead to a novel pest management strategy.
Habib Abbasipour - One of the best experts on this subject based on the ideXlab platform.
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insecticidal activity of peganum harmala seed extract against the diamondback moth plutella xylostella
Bulletin of Insectology, 2010Co-Authors: Habib Abbasipour, Mohammad Mahmoudvand, Fahimeh Rastegar, Moslem BasijAbstract:The diamondback moth, Plutella xylostella (L.) (Lepidoptera Plutellidae) is a key pest in cruciferous plants. Ethanol extract of Peganum harmala L. (seed) have shown pronounced effect on larval mortality, larval and pupal weight, oviposition deterrence, percent pupation, egg hatching and adult emergence of the diamondback moth, P. xylostella. A mortality of 66 and 100% was found in the third instar larvae that had fed for two days on the cabbage leaves treated with the ethanol extract at concentrations of 30 and 40 mg/ml, respectively. Significant dose response was observed on larval and pupal weight; pupal and adult emergence rate. Significant differences were also observed on oviposition. Percentage of egg hatching was reduced significantly in 30 and 40 mg/ml but not in 10 and 20 mg/ml concentrations. Obtained results showed that ethanol extract of P. harmala had a good insecticidal activity on P. xylostella.
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life table and temperature dependent development of diadegma anurum hymenoptera ichneumonidae on its host plutella xylostella lepidoptera Plutellidae
Environmental Entomology, 2008Co-Authors: Ali Golizadeh, Yaghoub Fathipour, Karim Kamali, Habib AbbasipourAbstract:Abstract Life table and temperature-dependent development of Diadegma anurum (Thomson) (Hymenoptera: Ichneumonidae) was studied on diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae) reared on cabbage, Brassica oleracea L. variety capitata, and cauliflower, Brassica oleracea L. variety botrytis. The developmental periods of immature stages were recorded at five constant temperatures (15, 20, 25, 30, and 35°C). The population of D. anurum and its host failed to survive at 35°C. Mean total development time of D. anurum was not significantly different on two host plants except at 25°C. The developmental zero (low temperature threshold) was estimated to be 7.0 and 6.9°C, and the thermal constant was 282.3 and 277.7 DD on cabbage and cauliflower, respectively, using the linear model. Data were fitted to four nonlinear temperature-dependent models. Evaluation of the models was carried out based on the following criteria: fit to data, number and biological values of the fitted coefficients, and a...