Skip to main content

Liyang stonefly (Kamimuria liyangensis) from Jiangsu, China, which has penis similar to Kamimuria hainana

Dlium Liyang City stonefly (Kamimuria liyangensis) from Jiangsu, China, which has penis similar to Kamimuria hainana

NEWS - Liyang stonefly (Kamimuria liyangensis sp. nov.) from Jiangsu Province is located in the southeastern coast of China which has no mountains on the plateau with only a few hilly areas mostly distributed in the southern part has a penis similar to Kamimuria hainana Li, Wang & Yu 2012.

Kamimuria Klapálek 1907 is the most species-rich genus in the subfamily Perlinae with about 93 species known worldwide, distributed in the Oriental and Palaearctic Realms, mainly in China. Over the past 30 years, the number of Kamimuria species recorded in China has increased dramatically to 60 species.

Jiangsu Province is located in the southeastern coast of China and has no mountains on the plateau, with only a few hilly areas mostly distributed in its southern region. Recently researchers examined Kamimuria materials from Jiangsu and described a new species.

Male K. liyangensis has a generally brown to dark brown colouration (Due to being preserved in alcohol, the colours in the specimens appear faded in the photograph). Head pale yellow with black marking covering ocellar area.

Antennae and palpi dark brown. Pronotum dark brown with darker rugosities, anterior margin and stripes along median suture darker. Legs yellow brown with dark knees. Wings membranous grey, veins brown.

Tergum 1–8 unmodified. Tergum 9 centre with sensilla basiconica. Hemitergal lobe slender, hook-like, apex slightly re-curved and nearly reaching the posterior margin of tergum 9.

Penis membranous, with a ring-shaped group of large spines at the tip, interrupted by a spongy membranous projection in the middle. The base of the penis on the dorsal side is densely covered with small dot-like spines.

This species is known only from the type locality, Liyang City, Jiangsu Province. The penis of the new species is similar to that of K. hainana. Both species have a spine-free membranous area at the apex of the dorsal side of the endophallus, while the base is densely covered with small spines. In addition, the ventral side of the endophallus has a spine-free membranous region.

However, K. hainana has a patch of basal spinules divided by a funnel-shaped region on the dorsal surface, which terminates subapically. The spines on both lobes form a heart-shaped ring when viewed from the ventral side.

In K. liyangensis, the dorsal side of the base of the penis is densely covered with small, point-like spines. In ventral view, there is a cluster of large, ring-shaped spines at the tip, interrupted in the middle by a spongy, membranous prominence.

Original research

Zeng L-L, Huo Q-B, Du Y-Z (2024). A new species of the genus Kamimuria (Plecoptera, Perlidae) from Jiangsu, China with re-description of K. microda Du, 2002. Biodiversity Data Journal 12: e137424, DOI:10.3897/BDJ.12.e137424

Dlium theDlium
Labels:

Popular Posts

Sandbox tree (Hura crepitans)

Sandbox tree ( Hura crepitans ) is species in Euphorbiaceae, a tropical tree, growing up to 60 meters tall and with a trunk circumference of up to 13.2 meters, the trunk is covered with long and sharp thorns and exudes a poisonous sap. H. crepitans has large, oval leaves, 15 cm wide and 20 cm long. The petioles are 22 cm long. The flowers are red and lack petals. Male flowers grow on long stalks, while female flowers grow singly in leaf axils. The fruit is a large, flask-shaped capsule, up to 10 cm in diameter, with 12-16 radially arranged carpels. The seeds are flat and about 2 cm in diameter. The capsule bursts when ripe, dividing into segments and ejecting the seeds at a speed of 70 m/s, a distance of 30-100 meters. This tree prefers moist soil and partial shade or partial to full sun, a warm, humid environment. It is often cultivated for shade. The wood is light and used to make canoes. The sap is used to poison fish. Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiosperma...
Read more

Telotaun (Manihot carthagenensis)

Telotaun ( Manihot carthagenensis ) is a plant species in Euphorbiaceae, trees or shrubs 2-10 m tall, erect and fibrous, white latex, leaves varying with the subspecies noted are Manihot carthagenensis ssp. carthagenensis , Manihot carthagenensis ssp. glaziovii and Manihot carthagenensis ssp. hahnii . M. carthagenensis has an erect stem, a tubular shape, a young stem which is bright green and covered in white wax, an old stem that has a thin layer of brown skin. Long leaf stems and white waxy, arranged alternately, growing in all directions, green on the bottom and redish on the top. Leaves have 3-7 fingers each up to 25 cm long and up to 15 cm wide, ellipses become obovoid, sometimes pandurate and apex acute. Each leaf finger has a bone in the middle that moves linearly with some pinnate bones. The upper surface is green and slightly shiny, the lower surface is whitish green. The base of the leaf is centered at the end of the stalk, the pointed end which ends at the head of the sp...
Read more

Giant green leech (Raksasa hijau)

Lintah raksasa or giant green leech ( Raksasa hijau ) is a species of animal in Salifidae, large green leeches, carnivores, not hematophagic, can grow to lengths of more than 50 cm, the front is perfectly tubular, but it is getting bigger, wider and flat backward. R. hijau has a front end that ends with a white mouth and has a width equal to the diameter of the front end of the body. The rear end ends with the anus and has a width equal to the diameter of the rear end of the body. The upper surface is whole dark green or leafy green, looks shiny and has no other additional color features. The bottom surface is lighter or brownish green. The skin is wrinkled like tight, elastic joints that make it possible to lengthen the body. Giant green leech moves forward by extending the tip of the front of the body to keep the new location farther away and this movement is then followed by the middle body and gradually the rear where the body moves completely. R. hijau does not suck blo...
Read more