A new Diplolepis Geoffroy (Hymenoptera, Cynipidae, Diplolepidini) species from China: a rare example of a rose gall-inducer of economic significance

Abstract

A new species of the genus Diplolepis Geoffroy, Diplolepis abei Pujade-Villar & Wang sp. nov. is described on host plant Rosa sertata Rolfe × R. rugosa Thunb. from China with an integrative approach based on molecular and morphological data. Diagnosis, distribution and biology of the new species are included and illustrated. This species is the first known rose gall-inducer of economic importance. A review of Eastern Palearctic species of Diplolepis is given and a key to the Chinese fauna is presented.

Extinction Threat to a Previously Undescribed Species of Gall Wasp (Hymenoptera: Cynipidae) and Two Associated Parasitoid Species (Hymenoptera: Braconidae and Eulophidae) on a Threatened Rose

“…japonica has been recorded in Japan ( Yasumatsu and Taketani 1967 ). This species is also native to Korea and China ( Wang et al 2013 , Ide and Abe 2020 ), but the Chinese population could be an undescribed species ( Pujade-Villar et al 2020 ). The Diplolepis ogawai female can be distinguished from the D .…”

“…Since the distribution ranges of both plant species include Japan, Korea, China, and Russia (Nagamitsu 2017, Jeon andKim 2019), D. japonica is widely distributed in East Asia, including Japan, Korea, and China (Yasumatsu and Taketani 1967, Wang et al 2013, Ide and Abe 2020. However, according to Pujade-Villar et al (2020), the Chinese population of D. japonica could be an undescribed species. In contrast to the typical Diplolepis species, galls of D. ogawai have been only recorded from R. hirtula.…”

“…Of these, D. japonica has been recorded in Japan (Yasumatsu and Taketani 1967). This species is also native to Korea and China (Wang et al 2013, Ide andAbe 2020), but the Chinese population could be an undescribed species (Pujade-Villar et al 2020). The Diplolepis ogawai female can be distinguished from the D. japonica female by the following four morphological characteristics: 1) metasoma is dark brown and partially reddish-brown in D. japonica, but black in D. ogawai; 2) mesoscutal impression is present in D. japonica, but absent in D. ogawai; 3) areolet is distinct in D. japonica, but indistinct or absent in D. ogawai; 4) forewing is infuscate along all the veins of the marginal cell in D. japonica, but not infuscate in D. ogawai (Fig.…”

“…in China ( Ohba 1997 ), the existence of a potentially diverse fauna of rose gall wasps in the eastern Palearctic was pointed out ( Abe et al 2007 ). In recent years, taxonomic studies on Diplolepis in this region were conducted and several new species were discovered ( Wang et al 2013 , Pujade-Villar et al 2020 , Zhu et al 2021 ).…”

Phylogenomic analysis of protein‐coding genes resolves complex gall wasp relationships

“…There is some uncertainty surrounding the interpretation of the hypopygial character. Vyrzhikovskaja (1963) claims that the hypopygium of Liebelia is straight and not ploughshare‐shaped as in Diplolepis , a claim that is repeated elsewhere without reference to the original source (Melika, 2006; Pujade‐Villar et al, 2020). Nonetheless, the hypopygium of L. magna Vyrzhilkovskaja clearly appears to be ploughshare‐shaped in the SEM illustration provided by Liljeblad et al (2008), albeit less extremely so than the hypopygium of Diplolepis .…”