Tian-Ci Yi

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.

A new species of larval Marantelophus (Acari: Prostigmata: Erythraeidae) parasitic on insects from China

Abstract The genus Marantelophus (Acari: Erythraeidae) is reported for the first time from China. Marantelophus dubifurcatus sp. nov. is described based on larvae parasitic on Cacopsylla sp. (Hemiptera: Psyllidae) and Psocoptera collected from southwest China. An updated key to the species of Marantelophus around the world is presented.

Two new species of Hoplomegistidae (Acari: Mesostigmata) associated with passalid Beetles from China

Abstract Stenosternum cordata sp. nov. and Stenosternum bifurcata sp. nov., new to science, are described, which is the first record of Hoplomegistidae from Asia. Stenosternum cordata sp. nov. is distinguished by its heart-shaped latigynal shield with two pairs of setae along the lateral margin, and two pairs of setae along the posterior margin of the sternal shield. Stenosternum bifurcata sp. nov. is distinguished by having remarkable bifurcate corniculus, six pairs of setae on the sternal shield and three pairs setae on the latigynal shield. The family Hoplomegistidae Camin & Gorirossi, 1955 is redefined and a key to adult females of species is provided.

Ontogenetic development and redescription of Eotetranychus xuzhouensis (Wang and Ma 1987) comb. nov. (Acari: Tetranychidae)

Abstract Platytetranychus xuzhouensis Wang and Ma 1987 is redescribed and combined as Eotetranychus xuzhouensis (Wang and Ma) comb. nov. based on the protonymph, deutonymph, male and holotype female specimens from En-Pei Mas collections. Eotetranychus xuzhouensis (Wang and Ma) comb. nov. can be distinguished from other members of Eotetranychus by the distinct shape of the aedeagus and tarsus I with one tactile seta proximal to duplex setae. The ontogenetic changes in leg chaetotaxy in Eotetranychus xuzhouensis (Wang and Ma) comb. nov. are given and discussed. Additional trends and reductive chaetotaxy of the leg segments suggest that Eotetranychus xuzhouensis (Wang and Ma) comb. nov. has its own basic larval-protonymphal pattern of setal additions.

A new species of Schizogyniidae (Mesostigmata, Celaenopsoidea) associated with beetles from China

Abstract Paraschizogynium plumachela sp. nov., collected from passalid, tiger, and stag beetles (Coleoptera: Passalidae, Carabidae: Cicindelinae, Lucanidae) in China, is described. This is the second species of the genus Paraschizogynium Hunter & Rosario, 1987, and the first record of Schizogyniidae from China. The genus is redefined based on this new species. Paraschizogynium plumachela sp. nov. can be separated from Paraschizogynium odontokeri Hunter & Rosario, 1987 by having an entire dorsal shield covering most of the dorsum, setae Z5 at least four times as long as setae s2, latigynal shields abutting each other anteriorly and each bearing two pairs of setae, a triangular mesogynal shield, two pairs of simple setae on integument of posterior margin of venter, three types of excrescences (one weakly sclerotized finger-like, one membranous feather-like and one coral-like) sub-distal on movable digit, deutosternal groove with four rows of fine denticles in female and three rows in male, and male hypostome dimorphic (hypostomal setae hp1 large, thumb-like, with one pair of seta-like spurs at base; hp2 tiny; hp3 hyaline, lobe-like).

Ontogenetic development and redescription of Oligonychus metasequoiae(Acari: Tetranychidae)

Abstract Oligonychus metasequoiae Kuang, 1992 is redescribed based on the larva, protonymph, deutonymph and adult male and female specimens from China. The ontogenetic development of chaetotaxy in O. metasequoiae and the number and position of solenidia on tibia I are discussed. Patterns of setal addition on legs I–IV from larvae to adults in this species are different from the basic pattern of the Tetranychinae outlined by Lindquist.

Redescription of three species of Mixonychus (Acari, Tetranychidae) from China

Abstract Holotypes and paratypes of three species in the genus Mixonychus from Mainland China (M. ganjuis, M. murrayae and M. nanchangensis) were examined and redescribed. The deutonymph of M. murrayae was described for the first time. The dorsal striae in M. nanchangensis show remarkable sexual dimorphism.