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Life cycle of Arthroschista hilaralis (lepidoptera: pyralidae) on jabon trees (Anthocephalus cadamba Miq)
Abstract
Arthroschista hilaralis is a defoliator pest. Currently, a great number of these insects are attacking Jabon trees, causing a high degree of damage. This study aimed to assess the life cycle of A. hilaralis on Jabon (Anthocephalus cadamba Miq.) The study was conducted by examining each stage of A. hilaralis life development, including the body size and the time required for each stage of A. hilaralis development. The results showed that the average time A. hilaralis took to complete a life cycle was 25.1 days, consisting of egg stage 2.7 days; larva 12.6 days, pupa 6.9 days and pre-oviposition of imago 2.9 days. Pest management action is required on a regular basis to control this pest development due to the high level of development and the rapid rate of growth of A. hilaralis. © 2017, Centre for Insects Systematic, Universiti Kebangsaan Malaysia.
... days eggs were hatched (Table 1). According to Susanty et al. (2017), A. hilaralis eggs hatching time was 2-3 days in Indonesia. In West Bengal (India), egg hatching period required for 3-4 days (Thapa and Bhandari 1976). ...
... 3±0.45, 2.4±0.24 days, respectively which was almost close to the result of Susanty et al. (2017). The full grown of caterpillar was around 21.5 mm to 25.0 mm in length (Figure 1a). ...
... The full grown of caterpillar was around 21.5 mm to 25.0 mm in length (Figure 1a). Larval body length of A. hilaralis was found 20.26 mm in fifth instar in Indonesia (Susanty et al. 2017). ...
In Sylhet, nursery owner facing a lepidopteran pest problem namely Arthroschista hilaralis on kadam saplings. Therefore, our research was articulated to find out the insect biology and damage severity of A. hilaralis on kadam saplings. Larvae of A. hilaralis folding the kadam leaves and make it entirely skeletonize. Whitish round shaped eggs were laid in cluster at both upper and lower surface of kadam leaves. Eggs were hatched after 6.4±0.2 days and the larval stage remained 12.8±0.3 days which was the main dangerous stage for kadam saplings. The full-grown caterpillars were around 21.5 mm to 25.0 mm in length. Pupal stage required around 6.4±0.6 days to became an adult moth. These insects damaged tender branches and young leaves of kadam saplings
... Pertanaman jabon di Bangladesh juga terserang hama ini(Baksha 2000).Utami et al. (2011) melaporkan bahwa jabon yang berumur kurang dari 1 tahun di Kawasan Hutan dengan Tujuan Khusus (KHDTK) Kemampo, Kabupaten Banyuasin, Provinsi Sumatera Selatan terserang A. hilaralis dengan rata-rata tingkat serangan sebesar 95%. Ulat daun A. hilaralis juga menyerang pertanaman jabon di beberapa daerah di Pulau Jawa baik pada tegakan jabon yang ditanam di dataran rendah maupun dataran tinggi(Susanty 2014).Dilaporkan serangan A. hilaralis dapat mempengaruhi tanaman jabon. Nair(2007)melaporkan bahwa serangan A. hilaralis dapat memperlambat pertumbuhan tanaman, menyebabkan terjadinya dieback (mati pucuk), dan terbentuknya cabang epikormik. ...
p>Infestation of pest is a major problem in the seedling and field of Jabon ( Neolamarckia cadamba [Roxb.] Bosser) in Indonesia, especially in South Sumatra. Arthroschista hilaralis Walk. (Lepidoptera: Pyralidae) is one defoliator pest attacked jabon stands. Some information about the infestation of A. hilaralis are required for pest control and prevent. The objective was to study the incidence level and intensity level of A. hilaralis on jabon stands at the planting age 2 and 4 years at the 2 seasons, and analyze the effect of weather (temperature and humidity) to foliar damage caused by A. hilaralis. This experiment was conducted in six locations in South Sumatra. The plots were delineated in three area that each plot was 0.03 ha in area and contain 20 jabon trees. Observations on the incidence and intensity level of A. hilaralis were conducted every month for 16 months representing two categories of time point observation of the rainy season and dry season. The results showed that infestation of A. hilaralis on jabon stands at the planting age 2 years and the rainy season was higher than planting age 4 years and another season. The incidence level and intensity level of A. hilaralis were 74.45% and 55.21% respectively. Weather factors (e.g. temperature and humidity) thought affected the incidence level and intensity level of A. hilaralis. Temperature has negative correlation to the incidence level of A. hilaralis (r = -0.629; p = 0.009) and to the intensity level of A. hilaralis (r = -0.546; p = 0.029). Humidity has positive correlation to the incidence level of A. hilaralis (r = 0.900; p < 0.0001) and to the intensity level of A. hilaralis (r = 0.768; p = 0.0005).</p
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