2021년 4월부터 8월에 제주시의 비닐하우스에서 재배되는 목이버섯에서 거저리 일종이 발견되었으며, 그를 동정한 결과 제주진주거저리 (Platydema takeii Nakane, 1956)로 확인되었다. 상업적으로 재배되는 버섯에 있어서 거저리 해충으로 인한 우리나라의 첫 번째 피해 사례이다. 여 기서는 이 해충의 피해 증상과 성충 및 유충의 진단형질을 제공하고자 한다.

자두수염잎벌(Monocellicampa pruni Wei, 1998) 유충은 자두(Prunus salicina Lindl)의 어린 과일 속에서 5령까지 경과하였다. 자두수염잎 벌 유충의 형태적 특징을 관찰한 결과, 원통형의 몸 구조, 구형의 머리, 4마디의 더듬이, 뚜렷한 발톱을 가진 가슴다리, I ~ VIII복부마디 등쪽에 5개의 주름이 있어 수염잎벌아과(Nematinae) 유충의 일반적인 형태적 특징을 공유하였지만, 첫번째 탈피 이후 복부끝다리(anal prolegs)가 사라진다는 점에서 Hoplocampa속의 유충과 차이를 보였다.

The study examines direct and indirect impacts of organizational commitment on employee motivation through two mediating factors – opportunistic behavior and knowledge sharing – in Vietnamese enterprises. The samples were selected by the non-probability sampling method followed convenient sampling, relatively stratified by localities in Vietnam. The sample size was 636 employees in Vietnamese enterprises. The number of collected online questionnaires was 379, while the number of valid questionnaires was 329. In the direct survey, the number of distributed questionnaires was 750, while the number of collected questionnaires was 421 and the number of valid questionnaires was 307. The total number of valid questionnaires used for analysis was 636. The study used quantitative methods with structural equation modeling analysis. The results indicate that among the components of organizational commitment, normative commitment has both direct and indirect impacts on employee motivation through two mediating factors: opportunistic behavior and knowledge sharing. Meanwhile, affective commitment has only an indirect impact on employee motivation through these mediating factors. Continuance commitment has both direct and indirect impacts; however, it has only an indirect impact on employee motivation through opportunistic behavior. In addition, the results show opportunistic behavior has a negative impact on the knowledge sharing of employees in enterprises.