| Oncocera faecella Zeller(Lepidoptera, Pyralidae, Oncocera),the larvae not only mainly attacked Jatropha Curcas's leaf,flower but also fruit and shoot in winter. That damaged on the shoot very seriously and affected gravely in Jatropha Curcas's growth and yield. This paper systematically studied the biological,ecological characteristics and control of Oncocera faecella, the main result were:1.The larvae period was very long, which had 4 instars. The larvae had shiny brown head capsule,chewing mouthparts,antennae and mouthparts protrusion parallel,three pairs of thoracic feet three pairs of thoracic feet,five pairs of abdomen toe,toe hook single sequence. The larvae had nine brown stripes on the back. The color of dorsal midline was most dark. The others close to parallel to both sides. Adult:moths length 10～15mm, wings length 16～20mm(n=30), the body was covered with small silver-gray scale. Antenna protonema witch was densely short brown scales on. The mouthparts was light gray. The head chest and abdomen were gray. Forewing was narrow and was covered with gray and dark gray scales. The wing's edge inserted with ash and brown slightness villus. There were no significant difference between male and female body size. The fecundity of each female was 29±17.05,the egg stage was 7±1d, and hatchability was 93.23%. The larvae had four instars. The feeding amount in 1st-instar and 2nd-instar larvae accounted for 10.6% in whole growth stage of larvae, much lower than that in 3rd-instar and 4th-instar larvae which accounted for 89.4%.The pupal stage was about 16d, with 1.04 (F):1 (M) of sex ratio and 88.96% of eclosion. Generally, the longevity of the adults was 6-8d. Newly hatched larvae burrowed into the blade near the egg, and then webbed the young leave of shoots and feed on it. Fully grown larvae went into the pupa stage within a thin cocoon in the litter or in foliage.2.Oncocera faecella Zeller had five generations per year in Panzhihua and Huili region. They overwintered as old larvae.The overwintering generation started its activities in the following year in May. In early June, the first generation of eggs can be observed.The 1 st generation larvae began to activity in the middle June, pupate in early July, The 1st generation adults appear in mid July. Every generation had not same time.3.The low-development threshold temperature and effective thermal constants of Oncocera faecella Zeller are measured under constant temperatures (20℃,23℃, 26℃,29,32,).The experiment showed that the development threshold temperature for its egg, larva, pupa and adult were(13.88±0.91)℃,(20.86±0.23)℃,(21.50±0.15)℃and (18.18±0.45)℃,respectively. The effective accumulated temperatures for those stages were (67.69±6.34)℃degree-day,438.54±30.14)℃degree-day,(259.97±18.37)℃degree-day,(128.49±10.78)℃degree-day, respectively. The suitable temperatures for Oncocera faecella Zeller range from 29℃to 32℃.Then, there was a significant impact on Oncocera faecella Zeller eggs, larvae, pupae and adult developmental period under differ temperature, that was:along with increasing temperature, the development duration was significantly shorter.4.By use of the aggregation index analyze method and regressive model analyze method, The results indicated that the Oncocera faecella Zeller were in the spatial pattern of aggregation distribution. Aggregation is caused by their own habits, Jatropha Curcas growth and environment. By analysis of the parameters of Iwao's m*-m,establishing m* =α+βm=12.727+1.1069m (r=0.9452).5.Screening of pesticides indicated that 1.0×103 mg.L-1 and 0.5×103 mg.L-1 of Alphamethrin (4.5%) and 0.5×103mg.L-1 and 0.25×103mg.L-1 of Acephate (30%) were significant efficiency to control larvae in 2nd and 3rd-instar stage.The 1.0×103 mg.L-1 of Alphamethrin (4.5%) and 0.5x103mg.L-1 of Acephate (30%) were significant efficiency in forest controlling.
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