Pheromone gland extracts of the fall webworm, Hyphantria cunea (Lepidoptera: Arctiidae) were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). Based on comparison of retention times and mass spectra of synthetic standards, four compounds were identified as (9Z,12Z)-octadecadienal, (9Z,12Z,15Z)-octadecatrienal, (3Z,6Z,9S,10R)-9,10-epoxy-3,6-heneicosadiene and (3Z,6Z,9S,10R)-9,10-epoxy-1,3,6-heneicosatriene with a ratio of 2:33.6:58.4:6. Trapping tests showed that quaternary blend of these compounds was highly attractive to male H. cunea. Unitraps baited with the quaternary blend loading of 200-300 μg on a gray rubber septum were very effective for monitoring H. cunea populations.

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The insect family Cicadellidae includes economically important vectors of plant pathogens. Hishimonus sellatus (Uhler) transmits jujube witches'-broom (JWB). Currently, H. sellatus and Hishimonus lamellatus Cai et Kuoh are observed to co-occur at the same locality on jujube. H. lamellatus is now suspected to be a JWB vector. As such, correct identification of Hishimonus species present in vineyards is essential for epidemiological surveys. However, traditional identification of Hishimonus by morphology is limited to the adult male. We provide a comprehensive description of morphological and molecular tools for discriminating between H. sellatus and H. lamellatus, for use in identification and monitoring of the two Hishimonus species and studies of their plant hosts. A rapid and inexpensive method is introduced to identify H. sellatus and H. lamellatus occurring in jujube orchards. This method is based on amplification of mitochondrial cytochrome oxidase I (COI) gene, using PCR with multiplexed, species-specific primers. The reliability of this new method has been tested on different populations from different sites in Beijing region of China.

According to the international methods of pest risk analysis and urban forestry characteristics in Beijing, a quantitative risk assessment system in Beijing for three primary non-indigenous pests was proposed. This system was used to analyze three major non-indigenous species, Dendroctonus valens, Hyphantria cunea, and Apriona swainsoni. The results show that the risks of these three pests in the Beijing area were 2.46, 2.30, and 2.02, which were all highly risky. Based on the result and extensive risk communications, combined with the management experience of the Beijing Forest Protection Station, the authors proposed some effective control measures to prevent the invasion of the three pests into Beijing.