Papenfussiella densa was described as Papenfussiella kuromo f. densa from Japan by Inagaki in 1958. P. densa has been recognized as an endemic and independent species based on the molecular analyses of type material without detailed morphological observations. In this study, Papenfussiella densa is reported as a new record from Dok-do, South Korea, based on morphological and molecular analyses. Papenfussiella densa is mainly characterized as having narrow, branched, slimy, and tomentose thalli with branchlets, partially hollow in the medulla of the middle part. The molecular analyses of the chloroplast rbc L-rbc S DNA sequence of the Papenfussiella densa sample from Korea revealed that it matched that of P. densa from Japan and was nested in the clade of Papenfussiella. There was only a 0.02% gene sequence divergence between the Korean and Japanese samples. We report P. densa as a new record from Korea and add this species to the list of Korean macroalgal flora.

한국산 미기록속 비늘우단풍뎅이속(신칭)의 미기록종인 제주비늘우단풍뎅이(Pachyserica yanoi)를 보고한다.

국내 미기록종인 Saridoscelis sphenias Meyrick을 보고한다. 이 종은 상제집나방아과의 두번째 종으로 기록된다. 정확한 동정을 위해 외부 형질과 수컷 생식기를 그림과 함께 기술한다. Saridoscelis sphenias Meyrick은 블루베리의 잠재 해충으로 국내 농가에 주의를 요한다.

Asteroid specimens were collected using fishing nets from the East Sea, Korea. The specimens were identified as Solaster paxillatus Sladen, 1889, belonging to the family Solasteridae of the order Valvatida. This species can be distinguished from three other Korean Solaster species by having 10 arms; subambulacral spines comprising four or five near base of arm, six or seven in middle part, and five or six in distal part of arm; furrow spines comprising four or five near basal part and three or four in distal part of arm; and suboral spines comprising more than ten spinules. The morphological characteristics of this species were described with illustrations. Solaster paxillatus is first reported in marine fauna of Korea.

A marine ulvalean species (Chlorophyta) was collected from the eastern coast of Korea. This species is morphologically characterized by a distromatic, dark to medium green and mostly irregularly orbicular or irregularly expanded thallus with entire or undulate margin without serrations. Vegetative cells are irregularly polygonal with distinctly rounded corners in shape, and have chloroplast completely covering the outer cell wall and one to two pyrenoids per cell. In a phylogenetic tree based on ITS (Internal Transcribed Spacer) sequences, this Korean alga nests in the same clade with Ulva sublittoralis, as a sister clade of U. californica, U. flexuosa and U. tanneri, which share the irregularly orbicular or expanded thallus normally without teeth cells. The genetic divergence between them is intraspecific within Ulva. Accordingly, it is identified as U. sublittoralis based on the morphological and molecular data. This is the first record of Ulva sublittoralis in the Korean marine algal flora.

Feldmannia chitonicola is reported as a new record from Korea based on morphological studies in laboratory-cultured materials and molecular analyses. F. chitonicola is mainly characterized by a small size (1-2 mm), erect filaments mostly unbranched, plurilocular sporangia produced on both prostrate and laterally on the basal part of erect filaments, and 2 types (lanceolate and ovate) of sporangia. In our cultures, sporangia production was slower at 10°C than in 16°C and 20°C. Our molecular analyses of rbcL and cox1 genes supported its independence from other congeners reported for Korea. This is the first report of F. chitonicola for western Pacific.

개미사돈아과의 미기록종인 Philoscotus rostralis Nomura를 한국에 처음으로 보고한다. 정확한 동정을 위해 외형과 진단형질의 사진과 분포 지도를 함께 제공한다.

Cinara (Cinara) cedri cedri Mimeur, 1936 is extensively distributed in Europe (France, Italy, Spain, and UK), North Africa (Morocco and Algeria), North America (California and New York), South America (Argentina), Middle East (Cyprus, Iran, Iraq, Israel, Lebanon, Syria, and Turkey), and Asia (China). Recently, this species was also invaded into China. In 2018, C. (Cinara) cedri cedri was firstly discovered on one plant, Cedrus deodara, in Korea. In this study, we provide full redescription in detail.

The Celyphidae, commonly known as beetle flies or beetle-backed flies, are a family of Diptera. The scutellum is enlarged and forming a protective shell over the abdomen, giving them a beetle-like appearance. Species in the family are mostly found in tropical region, especially in South East Asia. Records of North East Asia are rare, in China, some species are found in Southern region. In Japan, few species found in Okinawa region, but only one record of Celyphidae near in mainland area. In this research we firstly record specimen of genus Spaniocelyphus sp., from Korea stored in National Science Museum Korea and Kyongpook National University with comparison of specimen from Tsushima island, Nagasaki prefecture stored in Osaka Natural History Museum.

One species of the genus Ephedrus Haliday, 1833 (Hymenoptera: Braconidae: Aphidinae) is recognized in this study. The Ephedrus genus is known to 72 species worldwide. Of these, 16 species were reported in Korea. This genus is parasitic to groups of aphids and their relatives. Additionally, this genus is very similar to genus Toxares Haliday, 1840 in the morphology, but there is no difficulty in sympathy because there are certain morphological differences. In this study, Ephedrus blattnyi Starý, 1973 is recognized for the first time in South Korea. Information on this species has not been widely known yet. Descriptions, diagnosis distribution and illustration are provided.

An asteroid specimen that belongs to the genus Henricia was collected from the waters near Ongpo harbor, Jeju Island using fishing net on 24 January 2017. The specimen was identified as Henricia anomala Hayashi, 1973, which belongs to the family Echinasteridae and order Spinulosida. Henricia anomala was first described by Hayashi, 1973, who captured it from Sagami Bay at a depth of 110-116 m. This species can be distinguished from other Henricia species by short arms (R/r=4), abactinal spines lining the abactinal plates and bearing about two to five spinelets, closely meshed abactinal skeleton, composed of small rod-like and subtriangular plates, a narrow papular area containing one or two papulae, and adambulacral armature composed of five to seven bluntly pointed spinelets. This is the first report of Henricia anomala in Korea.

고치벌과에 속하는 Helconinae아과의 Schizoprymnus terebralis (Snoflák, 1953)을 한국에서 처음으로 보고한다. 본 종의 재기재, 진단, 숙주 정보 그리고 삽화를 제공한다.