Skip to main content

Dr. Yeon Jae Bae dung beetle (Acrossus baei) as a new species from South Korea

NEWS - Morphological analysis and mitochondrial COI sequences established a new species of the genus dung beetle (Acrossus Mulsant, 1842), Acrossus baei, from South Korea, after comparison with four related species: Acrossus atratus (Waterhouse, 1875), A. humerospinosus (Petrovitz, 1958), A. luridus (Fabricius, 1775), and A. superatratus (Nomura & Nakane, 1951).

Dr. Yeon Jae Bae dung beetle (Acrossus bei) as a new species from South Korea

Changseob Lim from Korea University in Seoul and Łukasz Minkina from Nowy Targ, Poland classified the new species based on the South Korean holotype and paratypes with the locality South Korea, Gangwon-do, Pyeongchang-gun, Jinbu-myeon, Mountain Odaesan. The etymology of the name honors Dr. Yeon Jae Bae who has contributed to the conservation of beetles in South Korea.

Male dimorphism with the anterior tibial apical spur clearly directed downward and inward before the apex, meso-metaventral slightly concave. Females with a pointed apical spur at the apex, meso-metaventral plate slightly convex.

Size variability from 6.0 to 7.5 mm, elytra usually blackish, sometimes with short orange-brownish lines before the apex. Spots on head and pronotum slightly variable. Relationship of elytra to elytral striae is somewhat variable.

Acrossus is a genus with over 40 species and two subspecies known to date. Most were described in the genus Aphodius Hellwig (1798) and sometimes placed in the subgenus Acrossus, but currently Acrossus has been elevated from subgenus to genus.

This genus covers a distribution mainly in the Palearctic and Eastern regions. One species is known from North America and another from the Afrotropical region. Most have very distinctive features especially the rounded or truncated cliseus at the front. Some species still have questionable positions.

In the last 20 years, only two species have been newly described in the genus: A. byki (Minkina, 2018) and A. jeloneki (Minkina, 2018). The genus Acrossus still requires research because the level of knowledge about species diversity is not yet complete.

Lim during his study of Aphodiinae from South Korea found several Acrossus specimens that could not be identified with the available literature and after careful examination proved to be undescribed species.

Original research

Lim C, Minkina Ł (2024). A new species of genus Acrossus Mulsant, 1842 (Scarabaeidae, Aphodiinae, Aphodiini) from South Korea. ZooKeys 1211: 211-230, DOI:10.3897/zookeys.1211.118456

Popular Posts

Humpback whales (Megaptera novaeangliae) manufacture bubble-nets as tools to increase prey intake

NEWS - Humpback whales ( Megaptera novaeangliae ) create bubble net tools while foraging, consisting of internal tangential rings, and actively control the number of rings, their size, depth and horizontal spacing between the surrounding bubbles. These structural elements of the net increase prey intake sevenfold. Researchers have known that humpback whales create “bubble nets” for hunting, but the new report shows that the animals also manipulate them in a variety of ways to maximize catches. The behavior places humpbacks among the rare animals that make and use their own tools. “Many animals use tools to help them find food, but very few actually make or modify these tools themselves,” said Lars Bejder, director of the Marine Mammal Research Program (MMRP), University of Hawaii at Manoa. “Humpback whales in southeast Alaska create elaborate bubble nets to catch krill. They skillfully blow bubbles in patterns that form a web with internal rings. They actively control details such ...

Pohpohan (Pilea melastomoides)

Pohpohan clearweed ( Pilea melastomoides ) is a species of plant in the Urticaceae, herbaceous perennial, erect stems, up to 100 cm tall, succulent, square or cylindrical, enlarged in the middle of the internodes, bright green in color and forming colonies in the shade. P. melastomoides has stipules that are immediately deciduous or subpersistent, green or brownish and oblong. The stalk is 2-9 cm long. The leaf blade is ovate or ovate-elliptic or oblong-lanceolate. The surface is wavy, pale green on the underside, dark green on the top. The three main veins are central and linear. Rounded base, tapered ends and serrated edges. The inflorescences are paired, the male is a dense cyme paniculata. Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Rosales Family: Urticaceae Genus: Pilea Species: Pilea melastomoides

Petai (Parkia speciosa)

Stink bean or bitter bean or pete or petai ( Parkia speciosa ) is a tropical tree species in Fabaceae, 5-25 m high and branched, reddish brown bark, always green, compound and pinnate leaves, young seeds are harvested as fresh or boiled food . P. speciosa has a hump-shaped flower that hangs with a long stalk, usually appearing near the tips of the branches. Flowers that are young and not yet blooming are green, mature flowers have stamens and pistils, old flowers turn yellow and are large in size. Dozens of long, flat pod-shaped fruits emerge from a flower hump hanging from a tree. Each pod has up to 10-20 seeds that are neatly arranged, green when young and wrapped in a rather thick membrane of light brown. The fruit dries and becomes harder as it ripens and releases the seeds. Petai grows well in wet and slightly wet climates, low land to mountains with an altitude of 1,500 m, open spaces and lots of sun throughout the day with fine-tinted soil and Ph 5.5-6.5. Trees start bea...