Golden-line frog refers to the golden-line side-pleated frog species group Pelophylaxplancyicomplex, including the golden-line side-pleated frog (PelophylaxplancyiLataste1880), Fujian side-pleated frog (PelophylaxfukienensisPope1929), Hubei side-pleated frog ( PelophylaxhubeiensisFeiandYe1982) three species, these three in the morphological characteristics of the extremely close, collectively referred to as the golden thread frog golden thread frog, due to the morphology is very difficult to distinguish, in the traditional classification of the existence of a greater divergence of the distribution of the three species range there is no clear delimitation of the definition.
The golden thread frog belongs to Amphibia, Ranaidae, and Pelophylax, and is a widely distributed endemic species in China.
The body length is 50 millimeters (slightly smaller in males), the head is slightly flattened, the muzzle is bluntly rounded, the muzzle ribs are not obvious, and the tympanum is large and obvious. The finger tips are pointed and rounded, the hind limbs are stubby and short, the toes are pointed and rounded, and the toes are fully webbed. Skin on dorsal and body sides with scattered warts, dorsal side with a pair of dorsal folds. Ventral surface smooth, with warts on anus and posterior end of femur. Dorsal surface green or olive-green when living, dorsal brown transverse stripe not visible on hind limbs, ventral surface yellowish-white. Males have a pair of pharyngeal lateral vocal sacs, nuptial pads on the first finger, and male gonads.
Lateral folds of the frog genus 22 species, China knows 8 species, widely distributed in the Palearctic and Eastern Ocean boundary area, in addition to Tibet and Hainan Province (District) are distributed, of which the golden thread frog species group of three species for the distribution of a wide range of more, mainly in the eastern part of China, is one of China's common frogs, but also China's greater economic value of the frog resources. The main identifying features are: the side of the head and the side of the body is mostly green, the back is green or olive green, there are 2 brownish-yellow dorsal folds, the dorsal folds are several times wider than the eyelids: the back of the femur has a yellowish-brown longitudinal stripe, and the ventral surface is yellow or light yellow. The toes are nearly fully webbed. Male frogs have 1 pair of internal acoustic sacs on the pharyngeal side and finger pads on the medial side of the base of the 1st toe in males. Living in the plains of ponds, lakes and marshes, fishponds, lotus ponds and other natural water bodies with more aquatic plants. Distribution places Hebei, Shanxi, Shandong, Henan, Hunan, Hubei, Anhui, Jiangsu, Zhejiang.