Skip to main content

Guangdong bolbos (Bolbelasmus guangdongensis) established as a new species of beetle in science

Guangdong bolbos (Bolbelasmus guangdongensis) established as a new species of beetle in science

NEWS - Adult Guangdong bolbos (Bolbelasmus guangdongensis) found in the lowlands, on the edge of a maar in Huguangyan National Geopark, have a short flight period, from late April to early June. Weiqi Liao and Zhengwei Wu of Ocean University in Zhanjiang City upheld this beetle as new to science.

Bolbelasmus Boucomont 1910 is one of the largest bolboceratine genera established for Bolboceras bocchus Erichson 1841, Bolboceras gallicus Mulsant 1842 and Bolboceras unicornis Schrank von Paula 1789. Kolbeus was established for Bolboceras arcuatum Bates 1887 and Bolboceras coreanum Kolbe 1886, but this genus was later treated as a synonym of the genus Bolbelasmus by Cartwright (1953) or a subgenus by Nikolajev (1996).

Bolbelasmus previously contained 31 species, including the subgenus Kolbeus and distributed from Oriental to Central America. Recently, 11 species have been recorded in Asia, 6 of them in China (B. coreanus, B. meridionalis Krikken 1977, B. nativus Krikken 1977, B. minutus Li & Masumoto 2008, B. chifengi Wang & Li 2024 and B. yutangi Li & Wang 2024).

Adult males are 5.6-15.2 mm long. Clypeus border arcuate (upturned on both sides), mandibular insertion often with a small tubercle with a punctate frontal tubercle, eyes not completely divided by the canthus, seven striae between the elytral suture and the humeral callus, the first elytral striae reaching the scutellum and the parameres usually weakly sclerotized.

B. guangdongensis is included in the subgenus Kolbeus based on the immarginate pronotal base and elongate scutellum. The new species resembles Bolbelasmus coreanus, Bolbelasmus meridionalis and Bolbelasmus chifengi but with a longer body (9 mm) and a frontal tubercle at the junction of the clipeofrontal suture.

Original research

Liao W, Wu Z (2024). A new species of Bolbelasmus (Coleoptera, Bolboceratidae) from Guangdong Province, China. Biodiversity Data Journal 12: e131664, DOI:10.3897/BDJ.12.e131664

Dlium theDlium

Popular Posts

Asian water hyacinth (Pontederia hastata)

Asian water hyacinth ( Pontederia hastata ) is a species of plant in the Pontederiaceae, herbaceous, aquatic, erect, growing in colonies in wet environments with freshwater bodies, lakes, swamps, rivers and agricultural land and abandoned lands. P. hastata is up to 120 cm tall, cylindrical leaf stalks and green in color. Leaves are heart-shaped or arrow-shaped, up to 25 cm long, up to 21 cm wide, green and thick. Inflorescences in panicles and grow on leaf stalks. Fan-shaped flowers, up to 3 cm wide, six-winged, blue in color, white stamens and yellow pollen. Flower stalks up to 3 cm long and white. Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Liliopsida Order: Commelinales Family: Pontederiaceae Genus: Pontederia Subgenus: Monochoria Species: Pontederia hastata

Guinea grass (Panicum maximum)

Guinea grass or buffalo grass or green panic ( Panicum maximum ) is a plant species in Poaceae, annual grasses, growing upright to form clumps, strong, cultivated in all tropical and subtropical regions for very high value as fodder. P. maximum reproduces in very large pols, fibrous roots penetrate into the soil, upright stems, green, 1-1.5 m tall and have smooth cavities for diameters up to 2.5 mm. Propagation is done vegetatively and generatively. Ribbon-shaped leaves with a pointed tip, very many, built in lines, green, 40-105 cm long, 10-30 mm wide, erect, branched, a white linear bone, often covered with a layer of white wax, rough surface by hair short, dense and spread. The flower grows at the end of a long and upright stalk, open with the main axis length to more than 25 cm and the length of the bunches down to 20 cm. Grains have a size of 3x4 mm and oval. Seeds have a length of 2.25-2.50 mm and each 1 kg contains 1.2 - 1.5 million seeds. Guinea grass has two varieties. P...

Purwaceng (Pimpinella pruatjan)

Purwaceng or purwoceng or antanan gunung or Viagra of Java ( Pimpinella pruatjan or Pimpinella priatjan ) are small termas growing horizontally in Apiaceae, growing in villages on Dieng Plateau, Central Java Province, Indonesia, at 1,500 to 2,000 meters above sea level, the roots have medicinal properties for aphrodisiacs and are usually processed in powder form for a mixture of coffee or milk. P. pruatjan grows flat on the ground but does not propagate, small leaves are reddish green for 1-3 cm in diameter. This plant is only found in Java and grows in high mountain areas. A low population where industrial demand is very high results in increasingly scarce. Another place that is likely to become a purwaceng habitat is the Iyang Mountains and the Tengger Mountains in East Java Province. Efforts to multiply and cultivate have a big problem where these plants have difficulty producing seeds. In vitro propagation research through tissue cultivation has been carried out to overcome ...