Limnia jakovlevi Elberg, 1965

Vikhrev, Nikita E., 2023, Notes on the Palaearctic fauna of Limnia (Diptera, Sciomyzidae), Amurian Zoological Journal XV (2), pp. 284-292 : 289

Limnia jakovlevi Elberg, 1965

Fig. 10

Neodictya jakovlevi Elberg, 1965

Limnia jakovlevi Elberg, 1965 , stat. nov.

Type material: the holotype, male, Irkutsk (52.28 ° N, 104.24 ° E, 1848, V. Yakovlev) ( ZIN). New material examined :

RUSSIA: Khakasia Reg., Shira distr., Borets , 54.46 ° N, 90.36 ° E, 29.06.2011, K. Tomkovich, 1♂ ; Tuva Reg., Uyuk R., 800 m, 52.07 ° N, 94.04 ° E, 1‒ 3.07.2017, N. Vikhrev, 1♂ .

DISTRIBUTION. Seems to be a rare species known from the south of Central Siberia: Irkutsk, Khakassia and Tuva regions of Russia and Inner Mongolia province of China ( Li et al. 2019).

REMARKS. This is another problematic taxon. It was previously known by the single male holotype. I was lucky to examine two more specimens of this taxon, one of them is shown in Fig. 10 . In 1965, L. testacea was well forgotten and L. setosa was not yet described, so Elberg placed jakovlevi in a separate genus Neodictya Elberg, 1965 . Presently, there are three possible solutions regarding the generic status of this species: to leave it in the monotypic genus Neodictya (1); to transfer it to the genus Trypetoptera (2); to transfer it to the genus Limnia (3). Similar possibilities concerning the relationship of these genera were discussed in Murphy et al. (2018: 153). As follows from the identification key given below, the species jakovlevi shares more characters with Trypetoptera punctulata Scopoli, 1763 than with L. testacea , but generally it is very similar to the latter (see Figs. 9–11 ). I propose leaving the monophyletic genus Trypetoptera as it is, and place the Elberg’s species in the genus Limnia for the time being seemingly artificial.

Figures

Figs. 9–11. General view: 9 — female Limnia testacea; 10 — male Limnia jakovlevi; 11 — female Trypetoptera punctulata Рис. 9–11. Общий виΑ: 9 — самка Limnia testacea; 10 — самец Limnia jakovlevi; 11 — самка Trypetoptera punctulata