scholarly journals Redescription of Melanagromyza sojae (Zehntner) from India and Nepal

2013 ◽  
Vol 2 ◽  
pp. 64-70 ◽  
Author(s):  
Ram Bahadur Thapa

Six new species of other stem flies infesting mostly legumes were also discovered under the genus Melanagromyza (stem flies) from Pantnagar, Northern India. These were: M. species new ex stems of Cassia sp. (proposed name M. pathaki new species); M. species new ex stems of Glycine max (Linn.) Merril. (proposed name M. glycini new species); M. species new ex stems of Medicago denticulata willd. (proposed name M. denticulata Willd. new species); M. species new ex stems of Pisum sativum Linn. (proposed name M. pisiphaga new species); M. species new ex stems of Trifolium pratense Linn,. (proposed name M. sehgali new species) and M. species new ex stems of Vicia faba Linn. (proposed name M. vicivora new species). New names have been proposed to them as per International rules of Zoological Nomenclature. Other stem flies redescribed by author include: Ophiomyia centrosematis de Meijere, Opmiormyia phaseoli (Tryon) and Ophiomyia cicerivora. More than one thousand male genitalia slides were prepared for this study. Variations in morphology and genitalia characters have been described between and within the species. Melanagromyza sojae (Zehtner) has been redescribed here. DOI: http://dx.doi.org/10.3126/njbs.v2i0.7491 Nepalese Journal of Biosciences 2 : 64-70 (2012)

2013 ◽  
Vol 1 ◽  
pp. 66-82 ◽  
Author(s):  
Ram Bahadur Thapa

A total of 28 species of agromyzid flies belonging to 7 genera have been reared and described on 34 different leguminous host -plants from Pantnagar, Nainital, Northern India. 13 agromyzid flies have been described as new species viz., Japanagromyza species nova (sp.n.) ex leaves of Pueraria phaseoloides (Roxb.) Benth; Liriomyza sp.n. ex leaves of Vicia sativa Linn.; Liriomyza sp.n. ex leaves of Vicia faba Linn.; Malanagromyza sp.n. ex stems of Cassia sp.; Melanagromyza sp.n. ex stems of Pisum sativum Linn. Melanagromyza sp.n. ex stems of Trifolium pratense Linn.; Melanagromyza sp.n. ex stems of Vicia faba Linn.; Ophiomyia sp.n. ex stems of Pueraria Phaseoloides (Roxb.) Benth; Ophiomyia sp.n. ex stems of Sesbania aculeata Pers.; Ophiomyiz sp.n. ex stem of Vigna mungo (Linn.) Heeper and Ophiomyia sp.n. ex stems of Vigna mungo (Linn.) Heeper. Large numbers of host plants have been recorded as new host for various agromyzid species. More than one thousand male genitalia slides have been prepared for this study. Variations in morphology and genitalia characters have also been illustrated within the species. DOI: http://dx.doi.org/10.3126/njbs.v1i0.7474 Nepalese Journal of Biosciences 1: 66-82 (2011)


1961 ◽  
Vol 39 (4) ◽  
pp. 793-797 ◽  
Author(s):  
H. W. Mead ◽  
M. W. Cormack

Fifty isolates of Ascochyta imperfecta from alfalfa seed grown in Ontario, Manitoba, Saskatchewan, Alberta, and British Columbia produced varying degrees of infection on excised leaves of Medicago falcata, Medicago sativa (three strains), Melilotus alba, Melilotus officinalis, Trifolium pratense, Lotus corniculatus, Pisum sativum, and Vicia faba. F tests from analyses of variance of disease ratings showed that the differences in susceptibility between hosts and between strains of Medicago were highly significant. Among the 10 hosts and within the strains of Medicago, the interaction isolates × hosts was highly significant. Thus, specificity among the isolates was clearly demonstrated. This is interpreted to mean that parasitic strains existed among the 50 isolates.A. imperfecta was isolated from 50 to 70% of the seed samples from each province. The heaviest infestation was on seed from Manitoba, where the weather at harvest time was wet and where the crop overwintered in the field.


Our Nature ◽  
2013 ◽  
Vol 10 (1) ◽  
pp. 258-268
Author(s):  
Ram Bahadur Thapa

Two species of pod flies under the genus Melanagromyza Hendel were reared, redescribed and illustrated from India. These were Melanagromyza albisquama (Malloch) and Melanogromyza obtusa (Malloch). Melanagromyza albisquama (Malloch) was reared from seeds of Alysicarpus moniliform Dc., Alysicarpus rugosus Dc. (Linn.), Alysicarpus vaginalis (Linn.) Dc. and Desmodium gangeticum Dc. from Uttar Pradesh India. This is a first report from India. The second species reared, re-described and illustrated from India was Melanagromyza obtusa (Malloch) from pods of Cajanus cajan (Linn.) Millsp. and Flemingia congesta Roxb. Melanagromyza obtusa (Malloch) was also reared from pods of Cajanus cajan (Linn.) Millsp. from Biratnagar, eastern Nepal (Thapa, 2000) and this is the first report from Nepal. Variation within these species, were also described and illustrated, with genitalia preparation. The biology of albisquama (Malloch) has been clarified from India (Thapa, 1991). Descriptions and genitalia illustration broadly agreed with the illustrations figured by (Spencer, 1963, 1977). Variation within the species was also studied by the author (Thapa, 1991). Sehgal (1987) had also collected and reared large series of this species from several localities in Terai and Kumaon and Garhwal regions of Northern India on its widely cultivated host plants, Cajanus cajan (Linn.) Millsp. and an alternate wild host Flemingia congesta Roxb. Spencer (1973, 1977) has listed Cajanus indicus Spreng, Flemingia sp. and Phaseolus radiatus Linn. as leguminous hosts of this species. Six new species of other stem flies infesting mostly legumes were also discovered under the genus Melanagromyza (stem flies) from Pantnagar, northen India. These were: M . pathaki new;  M .glycini new species; M . denticulata Willd. new species; M . pisiphaga new species; M . sehgali new species ; M .vicivora new species.New names have been proposed to them as per International rules of Zoological Nomenclature. Thapa (2012) has redescribed M. sojae (Zehntner) under Melanagromyza Hendel from India and Nepal.DOI: http://dx.doi.org/10.3126/on.v10i1.7794


1983 ◽  
Vol 22 (4) ◽  
pp. 841-847 ◽  
Author(s):  
Jean-Marc Brillouet ◽  
Bernard Carré

2021 ◽  
Vol 22 (2) ◽  
pp. 492
Author(s):  
Maria K. Paulmann ◽  
Matthias R. Zimmermann ◽  
Linus Wegner ◽  
Aart J. E. van Bel ◽  
Grit Kunert ◽  
...  

Forisomes are giant fusiform protein complexes composed of sieve element occlusion (SEO) protein monomers, exclusively found in sieve elements (SEs) of legumes. Forisomes block the phloem mass flow by a Ca2+-induced conformational change (swelling and rounding). We studied the forisome reactivity in four different legume species—Medicago sativa, Pisum sativum, Trifolium pratense and Vicia faba. Depending on the species, we found direct relationships between SE diameter, forisome surface area and distance from the leaf tip, all indicative of a developmentally tuned regulation of SE diameter and forisome size. Heat-induced forisome dispersion occurred later with increasing distance from the stimulus site. T. pratense and V. faba dispersion occurred faster for forisomes with a smaller surface area. Near the stimulus site, electro potential waves (EPWs)—overlapping action (APs), and variation potentials (VPs)—were linked with high full-dispersion rates of forisomes. Distance-associated reduction of forisome reactivity was assigned to the disintegration of EPWs into APs, VPs and system potentials (SPs). Overall, APs and SPs alone were unable to induce forisome dispersion and only VPs above a critical threshold were capable of inducing forisome reactions.


2016 ◽  
Vol 25 (2) ◽  
pp. 318-332
Author(s):  
D.M. Astakhov

The Palaearctic species of the genus Trichardis Hermann, 1906 are reviewed. A new species, T. lehri sp. nov., is described. A new synonymy is established: T. leucocoma (van der Wulp, 1899) = T. afanasievae Lehr, 1964, syn. nov. The male of T. mongolica V. Richter, 1972 is described for the first time. External features and the male genitalia of T. lehri sp. nov., T. leucocoma (van der Wulp, 1899) and T. mongolica V. Richter, 1972 are illustrated with photographs.


Zootaxa ◽  
2020 ◽  
Vol 4763 (2) ◽  
pp. 151-174
Author(s):  
GIORGIO BALDIZZONE ◽  
HUGO W. VAN DER WOLF

This work presents a review of the Coleophoridae of Central and Eastern Africa. A lectotype is designated for Coleophora psychropa Meyrick, 1920, and the male genitalia of C. crossanthes Meyrick, 1938, are illustrated for the first time. Coleophora sabaea Baldizzone, 2007, previously known only from Yemen, is added to the African fauna. Nine new species of Coleophora Hübner, 1822 are described: C. schouteni sp. nov., C. giustii, sp. nov., C. centrafricana sp. nov., C. riftella sp. nov., C. camerunensis sp. nov., C. ensifera sp. nov., C. gilgilensis sp. nov., C. nyanzaensis sp. nov., C. silvestris sp. nov. 


Author(s):  
Pradya Somboon ◽  
Thanari Phanitchakun ◽  
Jassada Saingamsook ◽  
Rinzin Namgay ◽  
Ralph E Harbach

Abstract Culex longitubus Somboon, Namgay & Harbach is described as a new species of the Mimeticus Subgroup of the subgenus Culex. The larva is most similar to the larva of Cx. tianpingensis Chen from China, but is distinguished by the length of the siphon and the anal papillae, the form of the comb scales and pecten spines, and the development of setae 7-P, 13-T, 1-X, and 4-X. The adults have wing markings and male genitalia similar to those of species of the Mimeticus Complex. Phylogenetic analysis of COI sequences revealed that the new species is closely related to Cx. murrelli Lien of the Mimulus Complex. The immature stages of the new species were found in stagnant pools and marshes at high altitudes in several districts of Bhutan.


2006 ◽  
Vol 38 (5) ◽  
pp. 421-424 ◽  
Author(s):  
Sanjeeva NAYAKA ◽  
D. K. UPRETI ◽  
H. Thorsten LUMBSCH

The new species, Lecanora luteomarginata and L. subpraesistens, are described from northern India. The first is characterized by apothecia with dark brown discs and bright yellow margins, while L. subpraesistens is a multispored species that is readily distinguished by an egranulose epihymenium and a melacarpella-type amphithecium.


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