The genus Acronicta Ochsenheimer, 1816 is known as a forest pest. The acronictine species is widely distributed across the Afrotropical, Oriental, Australian, and Neartic regions. This study presents a new record of an acronictine species from Korea, including descriptions, illustrations, and diagnostic characteristics. Additionally, the CO1 barcode data of the newly recorded species is compared with the global barcode reference at the species level. New data on the recently recorded species has been obtained from this study. This information will aid in the prompt identification and preparation for potential pest outbreaks.

The subfamily Acronictinae is established by Harris in 1841 based on the type species, Acronicta leporina.. In the Korean penisula, the acronictine moth Acronicta cuspis was initially reported by leech in 1889, and a total 45 species have been recorded to date. This brief overview cover adult and larval morphology, as well as ecological data, for more profound comprehension of the Acronictinae. Additionally, further research direction could involve conducting a phylogenetic analysis and clarifying the evolutionary relationships within the subfamily.

The family Erebidae is acknowledged as a highly diverse group in Lepidoptera. The genus Ischyja Hübner, 1823 has been known from India, Thailand, Laos, Vietnam, southern China, Borneo, and Sundaland, predominantly in the old world tropic region. This research presents identification of two species, which have been in Vietnam for the first time. With these new findings, the total number of Ischyja species has increased to four. We present a checklist of them, including descriptions and illustrations of the newly recorded species.

Ramulus mikado (Rehn, 1904) is an environmentally problematic species that has recently caused a severe outbreak on the mountainsides of the Seoul metropolitan area, resulting in significant damage to forests and causing inconvenience to people in the city centre vicinity. In this investigation, we analysed the genetic diversity through sampling in the outbreak region. The outcomes confirmed the efficiency of COI for species identification and the usefulness of haplotype analysis in examining regional variation.

A 19-year-old male Siberian tiger was presented with inappetence and paralysis of hind limbs. In a computed tomography (CT) scan, intervertebral disk disease at L3–L4 was detected. Cardiac arrest occurred during the surgery. At autopsy, myxomatous mitral valve degeneration (MMVD) and eccentric hypertrophy of the left heart were noted. The diagnosis was congestive heart failure caused by MMVD. Microscopically, myocardial and pulmonary fibrosis were observed in addition to the disintegration of the fibrosa layer and accumulation of glycosaminoglycans and proteoglycans in the spongiosa layer of the mitral valve. This is the first case of congestive heart failure with MMVD in a Siberian tiger.