The genus Platydialepis Haupt is a small genus of Pompilidae. Its members hunt spiders for larval provisioning. Studying this genus helps further enhance the understanding of biodiversity within this genus. The genus Platydialepis Haupt from China is reviewed. Four new species, Platydialepis bidentata Cui, Li & Ma, sp. nov ., P. flavipectoralis Cui, Li & Ma, sp. nov ., P. frontimaculata Cui, Li & Ma, sp. nov ., and P. prominula Cui, Li & Ma, sp. nov . are described. Additionally, P. ryoheii (Ishikawa, 1957) is reported as a first record from China. A key to Chinese species of the genus Platydialepis is provided.
The genus Paralipsis Förster, 1863 is recorded from South Korea for the first time. Two species are treated: Paralipsis triangulata Kim & Yoon, sp. nov. and P. eikoae (Yasumatsu, 1951), the latter newly recorded from South Korea. Paralipsis triangulata sp. nov. was collected from unidentified root-aphid colonies on the roots of Miscanthus sp. (Poaceae) and attended by Lasius koreanus Seifert, 1992 (Hymenoptera: Formicidae), whereas Paralipsis eikoae (Yasumatsu, 1951) (Hymenoptera: Braconidae) was collected from a nest of Lasius japonicus Santschi, 1941 (Hymenoptera: Formicidae), where no aphids were observed. Morphological descriptions, diagnostic characters, high-resolution photographs, and sequence data for seven gene regions (COI, COII, ND1, Cytb, 28SD2, EF1–alpha, and Wingless) are provided for both species. A COI gene tree and species delimitation analyses using ABGD and bPTP are also provided. Laboratory observations and videos revealed repeated antennal contact, riding behavior, grooming by associated ant workers, and trophallaxis in both species, as well as wing-pulling behavior in both species. These findings expand the known diversity and distribution of Paralipsis and provide new information on the ant-associated biology of root-aphid parasitoids in East Asia.
Seventeen species of Tetrastichus Haliday from China are reviewed, including three country records species: T. brevicalcar Graham, 1991, T. pilemostomae Graham, 1991, T. temporalis (Graham) and new provincial distribution records are provided for another fourteen species. A new host association is documented for T. coelarchus Graham reared from larvae of Arge pullata (Zaddach, 1859). An illustrated key to females of all known Chinese Tetrastichus is given based on Chinese material.
In the present study, a new species of the genus Kimseya Antropov, 1995, K. saudica Gadallah & Soliman, is described and illustrated. The specimens were collected using pitfall traps in the Ibex Protected Area, Hotat Bani Tamim, south Riyadh, Saudi Arabia. It closely resembles K. boharti Antropov, the only previously described species of the genus, but can be distinguished by differences in body sculpture, hind wing morphology, and several morphometric features. DNA sequences data were obtained from the new species to facilitate future comparisons with other populations of the genus that may be discovered and to provide molecular evidence for assessing morphological differences.
