The Abundance Parasitoid Populations of Neochrysocharis formosa and Neochrysocharis okazakii (Hymenoptera: Eulophidae) on Liriomyza spp. (Diptera: Agromyzidae) Associated with Vegetable Crop in Bali

The research objective was to determine the population abundance and the level of parasitation of parasitoid of Neochrysocharis formosa and Neochrysocharis okazakii against Liriomyza spp on some vegetable crops in Bali (Indonesia) from March 2014 to December 2014. The method used is a survey method; the sampling of Liriomyza spp infected plants was conducted by purposive sampling on the low, medium and high land in Bali.The results showed that the population abundance of N.formosa on planting vegetables in Bali with the highest population respectively in the low, medium and high lands at 642, 409 and 162 populations. N.okazakii in the low, medium and high lands is 243, 99 and 10 populations. N.formosa parasitation highest level was found in the low, medium and highlands respectively on tomatoes, chicories, tomatoes, while N.okazakii on tomato plants. Both parasitoids associated with L.sativae in the lowlands, medium and highlands, with L.huidobrensis only in the medium and highlands. Keywords: Abundance population, N.formosa, N.okazakii, Liriomyza spp., vegetable crop

Characteristic Morphology and Biology of Sycanus aurantiacus Ishikawa et Okajima, sp. nov. (Hemiptera: Reduviidae) on the Larvae of Tenebrio molitor L. (Coleoptera: Tenebrionidae)

The study on the Characteristic Morphology and Biology of Sycanus aurantiacus on Tenebrio molitor larvae was conducted in the Integrated Pest Management Laboratory, Program Study of Agroecotechnology, Udayana University, Bali, Indonesia. This research aims to identify the development and predation capacity of S. aurantiacus as a predator of T. molitor in the laboratory. Development of S. aurantiacus was monitored by observing the egg incubation period, the development stages and number nymph, and the longevity of the adult. Predation capacity of S. aurantiacus was observed by exposing five different densities of T. molitor larvae to an adult predator.  The density of the prey exposed to the predator was 2, 4, 6, 8, 10 nymphs.  Experiments on the development and predation capacity were conducted with ten replications. This study revealed that the egg incubation period of S. aurantiacus was 12-14 days.  The development time of the 1st, 2nd, 3rd, 4th, and 5th instars were 13,8 ± 1,39; 9,3 ± 1,77; 10,4 ± 1,58; 11,0 ± 1,76; and 19,1 ± 2,88, respectively. The longevity of S. aurantiacus adults were 82,7 ± 11,7days.  The females laid eggs 8-14 days after copulation.  A female could lay 5-11 egg clusters containing 35-73 eggs each. Predation capacity of S. aurantiacus when fed with T. molitor was 6,6 larvae per day. Keywords: Sycanus aurantiacus, Reduviidae, predator, Tenebrio molito