Based on the relationships between the overwintering flight numbers of the brown marmorated stink bug, Halyomorpha halys, and weather factors from 2003 to 2020, it was expected that the number of overwintering flight bugs in 2021 would be higher than in 2020. However, this prediction was incorrect. It is hypothesized that high maximum wind speeds during the stink bug mating and hatching periods resulted in decreased numbers of second instar larvae individuals.

In order to investigate the larval development and damage characteristics of the rice moth Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae) on rice, larvae of C. cephalonica were reared on brown rice, polished rice, wash-free rice, rice bran, and rice powder at 25ºC, 55% relative humidity (RH), and a 16:8 light-dark cycle. The shortest larval developmental period was found on brown rice (51.2 days) while the longest was found on rice powder (171.5 days). There were no significant differences in developmental periods among polished rice, wash-free rice, and rice bran. The emergence rate was exceptionally low on rice powder (53.3%) compared to other diets (over 80%). The examination of each kernel of brown rice after emergence showed that this species selectively damages rice germ, with a secondary preference for rice bran. These results suggest that dietary rice germ and rice bran are relatively suitable for the larval development of the rice moth.

We tested the effectiveness of the aerial application of the insecticide 5% phenothrin with the use of a drone-mounted ultra-low-volume (ULV) sprayer flying 5 m above the ground. Caged Aedes albopictus adults were placed in an open field 80 cm above the ground in Tochigi Prefecture, Japan. A perfect mosquito knockdown was achieved within 10 min after the application. And all of the mosquito individuals were not resuscitated until 60 min after knockdown. We also observed that 0.3μm microparticles of the insecticide were distributed around the test area. These results indicate that drone applications of insecticides might be a convenient way to reach areas that are difficult to access via the ground.

I investigated the distribution, abundance, and seasonal patterns of silken fungus beetle adults, Cryptophagus spp., in a rice milling factory in the Kanto region of Japan for three years beginning in April 2019. Fourteen sticky traps were placed in several areas in the factory and replaced monthly. The traps captured 64 beetles in the first year, 14 beetles in the second, and 104 beetles in the third. In each one-year period, more beetles were captured in the areas used for brown rice supply and bran storage than in other areas. The numbers of beetles captured peaked in December in 2019 and 2021, and in January in 2020.

Handling is often necessary when working with avian species in medical, laboratory, and field settings. However, the stressful effects of handling have not yet been well evaluated in birds. In this study, we measured heart rates serially during and after handling in carrion （Corvus corone） and jungle crows （C. macrorhynchos）. The heart rates of carrion and jungle crows during handling were 312 and 387 bpm, respectively, both of which decreased exponentially to resting levels （195 and 202 bpm, respectively） after handling. All carrion and jungle crow individuals recovered their resting heart rates within 50 and 90 minutes after handling, respectively.

Two adult males of Pollenia japonica Kano et Shinonaga were collected with 2 sticky traps placed in buildings in Hyogo Prefecture. The traps were placed from October 1 to December 6, 2021, and from December 3, 2021, to January 7, 2022. The findings obtained in the present study suggest that this species overwinters in its adult stage and is a potential nuisance, as are other species of the genus Pollenia Robineau-Desvoidy.