Species of Xorides (Xorides) (Hymenoptera: Ichneumonidae: Xoridinae) parasitizing wood-boring insects in the Palaearctic part of China

Thirteen species of Xorides (Xorides) parasitizing wood-boring insects in trunks and branches of trees are reported. Three of them, X. (Xorides) pissodius Sheng & Wen sp. n. reared from Pissodes nitidus Roelofs (Curculionidae, Coleoptera) in Larix principis-rupprechtii Mayr (Pinaceae), X. (Xorides) tumidus Sheng & Wen sp. n. reared from Cerambycidae in Quercus sp. (Fagaceae) and X. (Xorides) longicaudus Sheng & Wen sp. n. are new to science. X. (Xorides) ater (Gravenhorst, 1829) is a new record for China. Some new host records are provided. A key to species of Xorides (Xorides) of the Palaearctic part of China is presented

Sequentially witnessing entanglement by independent observer pairs

This study investigates measurement strategies in a scenario where multiple pairs of Alices and Bobs independently and sequentially observe entangled states. The aim is to maximize the number of observer pairs $(A_k,B_l)$ that can witness entanglement. Prior research has demonstrated that arbitrary pairs $(A_k, B_k)$ ($k\leq n$) can observe entanglement in all pure entangled states and a specific class of mixed entangled states [Phys. Rev. A 106 032419 (2022)]. However, it should be noted that other pairs $(A_k, B_l)$ with $(k\neq l \leq n)$ may not observe entanglement using the same strategy. Moreover, a novel strategy is presented, enabling every pair of arbitrarily many Alices and Bobs to witness entanglement regardless of the initial state being a Bell state or a particular class of mixed entangled states. These findings contribute to understanding measurement strategies for maximizing entanglement observation in various contexts.Comment: 11 pages, 2 figure