Light and pheromone trap networks were used to monitor and compare moth catches ofHelicoverpa (= Heliothis) armigera (Hubner) in both types of traps at many locations across India. There were obvious changes with latitude in flight patterns and in the correlation between light and pheromone trap catches. At northern locations, the correlation between light and pheromone trap catches were higher as compared to southern locations. The traps located in the central part of India showed correlations, intermediate between those of northern and southern locations. Pheromone traps were thus found suitable for monitoring at northern and central locations. At southern locations, where light and pheromone trap catches differ considerably at different times of the year, both types of traps should be operated simultaneously for better monitoring of this insect. Good correlations were found between larval population and light and pheromone trap catches of H. armigera at Patancheru, one of the southern locations in India.

Light and pheromone traps were compared for their relative efficiecy and importance in monitoring the Heliothis armigera (Hubner) moths at the farm of Rajasthan Agriculture University, Udaipur, Rajasthan, India, during the years 1984/85 (4 June 1984 to 3 June 1985) and 1985/86 (4 June 1985 to 3 June 1986). Both kinds of traps showed three periods of moth activity during both the cropping years. Both types of traps showed almost a similar trend in population fluctuation during the cropping years and there were significant positive correlations between light and pheromone trap catches, (r=0.87 for 1984/85 and r=0.93 for 1985/86). However, pheromone traps had many advantages over light trap in monitoring the Heliothis armigera moths.

Deux campagnes de piégeage lumineux des Trichoptères adultes sont réalisées sur les berges du Rhône. Les principaux paramètres météorologiques sont mesurés simultanément.L'examen des variations internes de la liste faunistique autorise la sélection d'une partie des données susceptible de confrontation avec les variables météorologiques. L'Analyse en Composantes Principales normée permet ensuite de définir la structure des variations météorologiques sur chaque période de piégeage. L'étude des relations taxons-variables par régression multiple résume enfin l'influence des conditions microclimatiques sur le contenu de la liste faunistique. De nombreuses espèces ont un niveau de capture en liaison significative avec les variables météorologiques. Il existe une identité de modification de la distribution d'abondance de la plupart des espèces sensibles. Cependant la composition faunistique relative des captures ne semble pas sujette, en période estivale, à des modifications profondes imputables aux conditions météorologiques. Leurs fluctuations n'apparaissent donc plus comme un obstacle majeur à l'interprétation des résultats de piégeage lumineux.