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Rajadurai, S.,Bhattacharya, S.,Shekhar, M.A. Korean Society of Sericultural Science 2002 International Journal of Industrial Entomology Vol.5 No.1
Mulberry leaf roller, Diaphania pulverulentalis (Hampson), is a major pest of mulberry, Morus alba. The life table construction from present investigation reveals the age specific survival $(1_{x)}$ and the age specific fecundity $(m_{x})$ of the pest. The female contributed the highest egg production $(m_{x} = 12.75)4 in the life cycle on the $27^{th}$ day and the lowest $(m_{x} = 0.8)$ on the 37$^{th}$ day of the pivotal age. The female progeny production was observed to be intensive for the first six days after the preoviposition period, beyond which it declines steadily, The fecundity of D. pulverulentalis varies between 60-140. The first female mortality within the cohort occurred 4 days after the adult emergence and mortality increased thereafter, One generation is completed in 33.08 days. The female dominated sex ratio (1: 7.18 days) was recorded.
Katiyar, R.L.,Kumar, Vineet,Manjunath, D.,Sen, A.K.,Shekhar, M.A.,Datta, R.K. Korean Society of Sericultural Science 2000 International Journal of Industrial Entomology Vol.1 No.2
The occurrence of Anagyrus kamali, a solitary endoparasite of the mealybug, Maconellicoccus hirsutus has been reported for the first time from India. The parasitoid was fecund to parasitizing the field population of mealybug to the tune of 10.37 to 42.70% in different months. A comprehensive study on the development of the parasitoid on different stages of mealybug indicated that the parasitoid was able to complete its development in all the stages. Higher parasitism (67.48-78.08%) and more female progeny were observed when 3rd instar nymphs and adult female of the mealybug were exposed to the parasitoid. The biology of A. kamali studied at 25${\pm}1^{\circ}C$ temperature and 60${\pm}$</TEX10% R.H. The parasitoid completes its life cycle in 19.72$\pm$1.12 days. The duration of egg, larva (3 instars) and pupa were 2.67${\pm}$</TEX0.42, 8.80${\pm}$</TEX0.43 and 8.25${\pm}$</TEX0.38 days, respectively. On an average each female of A. kamali laid 39.0${\pm}$</TEX4.53 eggs. It was found to parasitising 8-10 mealybugs and depositing 1-3 eggs per host individual. Observations on adult longevity, parasitizing potential and sex ratio has also been recorded.
Observation of the topological surface state in the nonsymmorphic topological insulator KHgSb
Liang, A. J.,Jiang, J.,Wang, M. X.,Sun, Y.,Kumar, N.,Shekhar, C.,Chen, C.,Peng, H.,Wang, C. W.,Xu, X.,Yang, H. F.,Cui, S. T.,Hong, G. H.,Xia, Y.-Y.,Mo, S.-K.,Gao, Q.,Zhou, X. J.,Yang, L. X.,Felser, C. American Physical Society 2017 Physical review. B Vol.96 No.16
<P>Topological insulators represent unusual topological quantum states, typically with gapped bulk band structure but gapless surface Dirac fermions protected by time-reversal symmetry. Recently, a distinct kind of topological insulator resulting from nonsymmorphic crystalline symmetry was proposed in the KHgX (X = As, Sb, Bi) compounds. Unlike regular topological crystalline insulators, the nonsymmorphic glide-reflection symmetry in KHgX guarantees the appearance of an exotic surface fermion with hourglass shape dispersion (where two pairs of branches switch their partners) residing on its (010) side surface, contrasting to the usual two-dimensional Dirac fermion form. Here, by using high-resolution angle-resolved photoemission spectroscopy, we systematically investigate the electronic structures of KHgSb on both (001) and (010) surfaces and reveal the unique in-gap surface states on the (010) surface with delicate dispersion consistent with the 'hourglass Fermion' recently proposed. Our experiment strongly supports that KHgSb is a nonsymmorphic topological crystalline insulator with hourglass fermions, which serves as an important step to the discovery of unique topological quantum materials and exotic fermions protected by nonsymmorphic crystalline symmetry.</P>