Baliothrips sunae sp.n. is described from eastern China, and eight thripid species are newly recorded from China. One species is shared with Europe, three with Australia and four with southeast Asia. Chilothrips Hood is synonymized with Oxythrips Uzel, and Graminothrips Zhang & Tong is synonymized with Organothrips Hood.

Food poisoning caused by potato glycoside alkaloids (SGA) remains a critical factor that affects potato production safety. The potato tuber moth (Phthorimaea operculella) is a notorious pest that displays good adaptability to SGA in potato tissues. Studies that explore the mechanisms underlying SGA homeostasis in potato tuber moth larvae are urgently needed. In this study, ultra-high-performance liquid chromatography (UHPLC)-triple quadrupole mass spectrometry (MS/MS) was applied to detect the dominant SGA substances α-solanine and α-chaconine in potato leaves and PTM larval tissues. From the highest to lowest SGA concentrations, the potato cultivars studied were ranked as follows: DS47, LS6, DS23 and QS9. To exclude the influence of nutrients within different potato varieties, different SGA containing (0%, 0.1%, 0.2%, 0.3% and 0.4%) the artificial diet treatment groups were added. DS47 and 0.3% SGA-containing artificial diets presented the best conditions for PTM growth, development and reproduction compared to other potato cultivars and artificial diet controls. The potato tuber moth larva tissues were dissected and the SGA content within different tissues were detected using an UHPLC machine. The results showed that α-chaconine was dispersed in the feces, midgut, hindgut, head and cuticle, and α-solanine was distributed only in the feces and midgut. Antibiotic-treated insects exhibited higher concentrations of SGA than the normal microbiome group. Furthermore, the SGA concentrations of 100 newly-hatched PTM larvae and puparia were detected, with both of them found to contain small amounts of SGA. The results showed that ecdysis and the excretion process were effective approaches used by the potato tuber moth to equilibrate internal SGA accumulation. The microorganism-decreased SGA concentrations were excited in their gut. SGA may transfer from adults to the next generation, and SGAs in PTM are inheritable. In this study, we demonstrated that the potato tuber moth possessed an effective method to preliminarily decrease high SGA accumulation in potato.

Seven species of the Panchaetothripinae genus Astrothrips are recorded from China, and an illustrated key provided for their identification. One new species is described, A. glanduculus sp.n., and the following three species are newly recorded from China, A. asiaticus, A. globiceps, and A. tumiceps. The male of A. aucubae is described for the first time, and plants from which Astrothrips have been taken are listed.

The Panchaetothripinae comprises 42 genera and 146 species of leaf-feeding thrips, some of which are horticultural pests. We examined representatives of the 18 genera that include most of these pests. For species delimitation, we used DNA barcoding to produce171 sequences for 40 morphospecies. Most species were found to be monophyletic, although cryptic diversity was evident in 8 presumptive species. A multilocus molecular phylogenetic assessment was based on one mitochondrial (COI) and three nuclear loci (EF-1α, ITS2, and 28S) from 132 specimens (18 genera and 33 species), representing all genera and ~82% of species in China. Maximum likelihood (ML) and Bayesian inference (BI) confirmed monophyly of each genus with strong support. Monophyly of tribes Panchaetothripini and Monilothripini were refuted, but the well supported tribe Tryphactothripini was confirmed. Rhipiphorothrips was recovered as a sister to the remainder of the genera of Panchaetothripinae combined. Both analyses revealed two major clades. Clade A comprised the majority of the genera, including tribe Tryphactothripini. Clade B included only four genera of which two, Helionothrips and Caliothrips, are particularly species rich. The relationships of some genera remain unresolved.

Mycterothrips gongshanensis sp.n. and M. yelangi sp.n. are described from Southwestern China. Both species have been collected from tea (Camellia sinensis), and M. gongshanensis sp.n. is a potential pest in tea gardens. An identification key is provided to the Mycterothrips species recorded from China.

Amalothrips bifurcus sp.n. is described from Southwestern China as the third species of Amalothrips, characterized by the forked sense cone on antennal segments III–IV. Rhamphothrips yunnanensis sp.n. is described as the second known species of Rhamphothrips in which the male has laterally on the mesosternum one thorn-like seta and one stout shaded seta. Two species, Amalothrips noorazlani Ng and Parexothrips palumai Mound, are newly recorded from China.