A new species Paracarophenax alternatus Xu and Zhang sp. nov. is described and illustrated based on phoretic females. The mites were found attached to the adult of Monochamus alternatus Hope (Coleoptera: Cerambycidae) collected from traps set in Minhou county, Fuzhou city, Fujian province, China. The new species is the eighth representative of the genus and also the first record of the Paracarophenax associated with the host family Cerambycidae. An updated the key to species of Paracarophenax is provided.

A new oribatid mite species of the family Pediculochelidae, Paralycus nortoni sp. nov., is described and illustrated based on adult specimens collected from barks of dead Pinus massoniana Lamb. infested by Monochamus alternatus in Fuzhou city, China. This new species described here is the fourth species of the genus Paralycus in China. An updated key to the species of the genus Paralycus is provided.

View related articles View Crossmark data Figure 1. Neighbor-joining tree of the Myrmeleon formicarius and related 15 different species of Neuropterida based on the genome sequence. Numbers labeled on the branch are bootstrap values.

A new species of the genus Hoplocheylus Atyeo and Baker (Acariformes: Heterostigmata: Tarsocheylidae), H. lindquisti Xu & Zhang sp. nov., is described based on larva, deutonymph, adult male and female specimens collected from the bark of dead Pinus massoniana Lamb. infested with Monochamus alternatus (Coleoptera: Cerambycidae) in Fuzhou city, China. This is the first report of the genus Hoplocheylus and the family Tarsocheylidae in China.

Summary The bacterial communities in the wound tissues of Pinus massoniana were analysed by 16S rDNA amplicon sequencing. The results showed that the bacterial richness and diversity changed remarkably whether the wound was inoculated with pine wood nematode (PWN; Bursaphelenchus xylophilus) or not after 12 h. However, the predominant bacteria Stenotrophomonas, Burkholderiaceae, Pseudomonas, Serratia and Delftia, introduced by PWN in the wound tissues, changed within 6 h. After 6 h of PWN inoculation, the most abundant genus associating with PWN, Stenotrophomonas, failed to colonise the wound tissues, and the abundance of Delftia decreased, while the other representative bacteria, Burkholderiaceae, Pseudomonas and Serratia, from the PWN were markedly enriched. In addition, our study is the first to report the association of Serratia liquefaciens with PWN. Predicted functional analyses using the Tax4Fun tool showed that the alterations in bacterial composition also led to shifts in their functional pathways, especially after 12 h of PWN inoculation. These findings clarified that the bacteria carried by PWN were responsible for the alterations in bacterial communities in the wound tissues and will shed light on the invasion mechanism of PWN.