Rhogogaster robusta Jakowlew, 1891

Taeger, Andreas & Viitasaari, Matti, 2015, European Rhogogaster s. str., with notes on several Asian species (Hymenoptera: Tenthredinidae), Zootaxa 4013 (3), pp. 369-398 : 381

Rhogogaster robusta Jakowlew, 1891

( Fig. 4q )

Rhogogastera robusta Jakowlew, 1891: 38 –39. Holotype ♀ (ZIRAS, http://dx.doi.org/10.6084/m9.figshare.996042). Type locality: China: Gansu: “Xining”.

Discussion. The label data of the specimen in the collection of the Zoological Institute in St Petersburg do not agree with the record data provided in the original description. Jakowlew (1891: 6) gave “Гань-су: Сининъ” (= Gansu: Xining) as type locality, and Potanin as collector. The specimen under discussion is labeled “Упинъ 26/IV 85 ” (Upin 26/IV 85). This is an original label from the Potanin expedition 1884–1886 to China. According to the expedition report of Potanin, he was in Sigu from 24th June to 1st July, and on 26th visited the village Upin (Belokobylskij in litt. 2014). The specimen bears no identification label by Jakowlew, but a label “Wahrscheinlich Typus von Rhogogaster robusta Jak. R. Malaise ”. During a stay in St. Petersburg in 2014, AT checked the drawers containing the ZIRAS Symphyta collection. No other specimen that fits the description of robusta could be found. It should be noted that Jakowlew (1891) usually provided detailed collection data for the specimens from the Potanin expedition. In the case of robusta these data are missing. Today it is impossible to explain why this happened, but one could speculate that Jakowlew mixed up his notes, or the material had been only temporarily in his hands and he gave wrong data from memory. On the other hand, it seems very unlikely that Jakowlew had before him one further specimen which has meanwhile been lost and that he overlooked a second (the available) specimen from the Potanin collection. Therefore, we agree with Malaise and consider the specimen in the ZIRAS to be the holotype of R. robusta .

Figures

FIGURE 4. a – x: head in dorsal view— a Rhogogaster punctulata, b R. chlorosoma, c R. chlorosoma (paratype), d R. scalaris (R. chlorosoma podkumokensis lectotype), e R. scalaris, f R. scalaris, g R. scalaris (R. carpatica lectotype), h R. scalaris, i R. viridis, j R. viridis (R. dryas paratype), k R. viridis, l R. polaris, m R. sibirica (lectotype), n R. magniserrula (holotype), o R. magniserrula (paratype from Russia), p R. magniserrula (holotype, oblique view), q R. robusta (holotype), r R. auctor (holotype), s R. naias (paratype), t R. bactriana (R. bactriana lindti paratype), u R. genistae (R. genistae viridifrons lectotype), v R. gilva (lectotype), w Tenthredo virescens (lectotype), x T. olivacea (R. viridis var. montana lectotype).