Vishal Mittal ¹, Irfan Illahi ¹, Anil Dhar ¹, M. A. Khan ¹

Affiliations
1 Central Sericultural Research & Training Institute, Central Silk Board, Pampore, 192 121, Jammu and Kashmir, IN

Abstract

The incidence of natural enemies on the mulberry pyralid, Glyphodes (=Margaronia) pyloalis Walker (Lepidoptera: Pyralidae) infesting mulberry crop was studied at Pampore, Kashmir during 2008 and 2009 cropping seasons. Five hymenopteran parasitoids including three braconids (Apanteles obliquae Wilkinson, Bracon hebetor Say and Chelonus carbonator Marshall) and two ichneumonids (Pristomerus sulci Mahdihassan and Kolubajiv and Xanthopimpla sp.) were found to parasitize the larvae. Two predators, viz. Tetragnatha sp. (Araneae: Tetragnathidae) and Philodromus sp. (Araneae: Philodromidae) were also recorded. The activity of these natural enemies was observed from July to October in the cropping period spread over May-October.

Keywords

Glyphodes pyloalis, Kashmir, Mulberry, Natural Enemies.

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Ankita Gupta ¹, M. A. Khan ¹, Meena Agnihotri ¹

Affiliations
1 Project Directorate of Biological Control (ICAR) P. B. No. 2491, H. A. Fann Post, Bellary Road, Hebbal Bangalore 560 024, Karnataka, IN

Abstract

A new genus and a new species of Pteromalidae, viz. Indoclava Gupta et al. gen. nov. and Indoclava longissima Gupta et al. sp. nov. are described from Bhimtal region or Uttaranchal.

Keywords

Indoclava gen. nov., Indoclava longissima Sp. Nov., Pteromalidae, Hymenoptera.

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Siddharth Tiwari ¹, M. A. Khan ²

Affiliations
1 Department of Entomology, Virginia Polytechnic Institute and State University, Virginia 240 060, US
2 Department Entomology, G.B. Pant University of Agriculture and Technology, Pantnagar 263145, Uttaranchal, IN

Abstract

Corcyra cephalonica (Stainton) is a laboratory host for mass production of Trichogramma spp. and other biocontrol agents. In the present study for rearing Corcyra, three diets were used as broken maize alone, broken maize + yeast (2%) and broken maize + protinex (2%). Maize + yeast combination gave the best results in terms of mean total adults emergence (2211), mean total females (985), mean fecundity (397.85) and mean duration of moths emergence (52.31 days), while average developmental period was lowest (36 days) when compared with other two diets. The effect of egg laying on parasitization by T. chilonis revealed that highest mean per cent parasitization of 51.96 (mean of 1^st to 6^th day laying) was obtained on eggs laid by moths reared on maize + yeast diet. The highest mean per cent parasitization (73.9) was obtained on 2^nd day egg laying.

Keywords

Corcyra cephalonica, Natural Diet, Parasitization, Protinex, Trichogramma chilonis, Yeast.

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Vasudha Gautam ¹, Suneel Kumar ¹, M. A. Khan ¹

Affiliations
1 Biological Control Laboratory, Department of Entomology, G. B. Pant University of Agriculture and Technology, Pantnagar 263 145, Uttaranchal, IN

Abstract

The egg masses of litchi stink bug, Tessaratonla javanica (Thunberl:) were found parasitized by two very interesting egg parasitoids viz, Anastatus colemani Crawford (Hymenoptera: Eupelmidae) and Ooencyrtus phongi Tryapitsyn, Myartseva and Kostyukov (Hymenoptera: Encyrtidae). The two parasitoids offer great potential for the hiological control of litchi bug T. javanica. Ooencyrtus phongi is being reported for the first time from India. The egg parasitization by A. colemani and O. phongi ranged from 12.9 to 52.9 per cent and 20.6 to 55.7 per cent, respectively during tbe study period. The sex-ratios of the A. colemani and O. phongi ranged from 1:1.83 to 1:4.14 and 1:1.35 to 1:3.83, (male: female), respectively.

Keywords

Anastatus colemani, Ooencyrtus phongi,Tessaratoma javanica.

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M. A. Khan ¹, S. Tiwari ¹

Affiliations
1 Biological Control Laboratory, Department of Entomology, College of Agriculture, G. B. Pant University of Agriculture and Technology Pantnagar 263 145, Uttaranchal, IN

Abstract

In the present investigations a large array of plant species was evaluated for analysing their effect on the Trichogramma chilonis Ishii, for better understanding of the tritrophic interactions. The extracts of the eleven test plants were treated on the Corcyra eggs, which were suhsequently exposed to the adult females of T. chilonis for parasitisation and further observations, were made regarding per cent parasitisation and per cent emergence. Among the various plants tested, egg cards treated with the most commonly available fern in Tarai region Pteridium aquilinum resulted in maximum mean per cent parasitism 78, while maximum mean per cent emergence 85.33 was observed in the cards treated with Eucalyptus rostrata.

Keywords

Parasitization, Plant Extracts, Trichogramma Chilonis.

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