Dao-Chao Jin

Descriptions of two new species of the genus Sperchon Kramer, 1877 (Acari: Hydrachnidia, Sperchontidae) from China

Two new water mites species of the genus Sperchon Kramer, 1877 from China, Sperchon synsetus sp. nov. and Sperchon xiaoqikongensis sp. nov. are described and illustrated in this article. Sperchon synsetus sp. nov. differs from known species of the genus in the following: cuticle covered with very fine spinules arranged in polygonal pattern and each polygon with an annular line inside; two peg-like setae fused at the base on the ventral side of P-IV. Sperchon xiaoqikongensis sp. nov. is characterized by cuticle covered with scale-shaped papillae; P-II with an obtuse projection bearing three setae and A1 setae is plumose. To the present, 18 species of the genus Sperchon have been described from China.

Description of two new species of Woolastookia Habeeb (Acari: Hydrachnidia, Aturidae) from China

Two new species Woolastookia megaseta sp. nov. and Woolastookia foliatus sp. nov. are described here. This is the first record of the genus Woolastookia Habeeb from China.

Genetic diversity of Sogatella furcifera (Hemiptera: Delphacidae) in China detected by inter-simple sequence repeats.

Abstract The white-backed planthopper (WBPH), Sogatella furcifera (Horváth) is a serious pest causing grievous damage to rice plants. In the present study, inter-simple sequence repeats were employed to investigate the genetic diversity of 108 samples from 27 WBPH geographic populations in China. Ten primers were screened out with 147 amplified bands, average percentage of polymorphic bands, polymorphic information content, and marker index were 78.9, 0.456, and 6.753% respectively. The results indicated that genetic diversity was different among populations, but genetic variation was as low as 0.2% among the populations and as high as 99.8% within the same geographic population. Among the examined WBPH populations, genetic distances were weakly correlated to geographic distance, and there was no correlation between genetic identity and elevation. Cluster analysis showed that the 27 WBPH populations studied could be lumped into four clusters, with which the results of principal coordinate analysis (were almost consistent. In conclusion, the molecular genetic data demonstrated that the region consisting of Yunnan, Guizhou, Guangdong, and Guangxi was the first landing area of WBPH in its migrating process from overwintering sites to China.

Study on the genus Macronyssus (Acari: Macronyssidae) with description of a new species, redescription of a known species from the genus Myotis (Chiroptera: Vespertilionidae) and a key to the species in China

We review eight species of the genus Macronyssus from China including one new species and the newly described male and protonymph of a known species: M. leishanensis Tian, Jin & Zhang, M. laifengensis Wang & Shi, M. xianduensis (Zhou, Tang & Wen), M. tieni (Grokhovskaya & Nguen-Huan-Hoe), M. radovskyi (Domrow), M. pararadovskyi Tian, Jin & Zhang, M. miraspinosus Gu & Wang, M. pararchaetus sp. nov. Macronyssus parachaetus is described from females found on Myotis ricketti (Thomas) in Fangshan, Beijing; M. miraspinosus Gu & Wang is redescribed from the female and newly described male and protonymph found on Myotis chinensis (Tomes) in Guiding, Guizhou. Keys to 21 species of the genus known from China are given for females, males and protonymphs in this article.

Description of a new subgenus with a new species of Momonia Halbert, 1906 (Acari: Hydrachnidiae: Momoniidae) from China

The new subgenus Paramomonia subgen. nov. with a new species Momonia (Paramomonia) fuscina sp. nov. is described. The subgenus Paramomonia is proposed as a subgenus of the genus Momonia Halbert based on the characters of the dorsal shield, anterior coxal groups and genital field that distinguish it from existing subgenera.

Water mites of the subgenus Tympanomegapus Thor (Acari: Hygrobatidae: Atractides) from China

ABSTRACT The present paper deals with three new species, Atractides (Tympanomegapus) anhuiensis n. sp.Yi and Jin, Atractides (Tympanomegapus) brevis n. sp. Yi, Jin and Wang, Atractides (Tympanomegapus) projectus n. sp. Yi and Jin, and a newly recorded species from central and southern China belonging to Oriental region, Atractides (Tympanomegapus) acutirostris (Motaş and Angelier, 1927), in the subgenus Tympanomegapus. Atractides (Atractides) latisetus Jin, 1997 is replaced with Atractides (Tympanomegapus) huaxiensis Yi and Jin n. nom. A key to females of species in the subgenus Tympanomegapus Thor from China is given.

Ontogenetic development and redescription of Oligonychus pratensis (Banks, 1912) (Acari: Tetranychidae)

Oligonychus pratensis (Banks, 1912) is redescribed based on adult females as well as immature instars collected from Imperata (Poaceae) in Zhangjiajie City, Hunan Province, China. The ontogenetic development of chaetotaxy in O. pratensis is the same as that in O. afrasiaticus (McGregor, 1939) and O. saccharinus Baker Pritchard, 1960. Moreover, we remove O. shinkajii Ehara, 1963 from synonymy with O. modestus (Banks, 1900), due to significant differences in their aedeagal morphology.

Chinese water mites of the genus Torrenticola Pie rsig, 1896 (Acari, Hydrachnidia, Torrenticolidae), with descriptions of two new species and a new record from Foding Mountain

Abstract Three water mite species of the genus Torrenticola Piersig, 1896 are reported from Foding Mountain National Nature Reserve, Guizhou Province, China. Torrenticola fodingensis Gu & Guo, n. sp. and T. tenuichelicera Gu & Guo, n. sp. are described and illustrated as new to science, and T. nipponica (Enami, 1940) is recorded in China for the first time, with the first description and illustration of its deutonymph. In addition, a key to the species of Torrenticola in China is presented in this paper. The type specimens of the new species are deposited in Institute of Entomology, Guizhou University, Guiyang, P. R. China (GUGC).

A new species of Neobonzia (Acariformes: Cunaxidae, Coleoscirinae) with a key to species of China

Abstract This paper presents a new species from China, Neobonzia neomalookensis sp. nov. which is described and illustrated in detail based on adult females and protonymphs. This new species resembles N. malookensis Bashir & Afzal, 2009, but can be easily distinguished by the following features: Palp tibiotarsus with 1 spine-like seta, 1 tubercle and 4 simple setae. Genu III with 1 asl and genu IV with 1 asl. Tibia I with 1 bsl, tarsus I with 3 bsl. A key to females of China is given.

Figure 17 In Ontogenetic Development And Redescription Of Oligonychus Pratensis (Banks, 1912) (Acari: Tetranychidae)

FIGURE 6. Oligonychus pratensis, male, A–D, A–C, legs I–III, right side legs; D, leg IV, left sides leg; E, empodium I; F, empodium II. Scale bars: A–D 100 µm; E–F 10 µm.