Pseudodineura mentiens ( Thomson, 1871 )

Liston, Andrew, Prous, Marko & Vårdal, Hege, 2019, The West Palaearctic Pseudodineura and Endophytus species (Hymenoptera, Tenthredinidae), Zootaxa 4614 (3), pp. 511-528 : 522

Pseudodineura mentiens ( Thomson, 1871)

Blennocampa mentiens Thomson, 1871: 221–222 . Holotype ♀ in MZLU (GBIF-GISHym17570; images:https://doi.org/10.6084/ m9.figshare.7880894). Type locality: Öland [ Sweden].

Dineura hepaticae Brischke, 1883: 237 . Syntypes ♀, probably destroyed ( Blank & Taeger 1998). Type locality: Heiligenbrunn [ Poland, near Gdansk]. Synonymy with mentiens by Konow (1899).

Pseudodineura mentiens: Konow 1885: 297 .

Pseudodineura hepaticae: Konow 1885: 297 .

Pelmatopus mentiens var. konowi Enslin, 1921: 182 (key), 184. Syntypes ♀. Lectotype ♀ (GBIF–GISHym3893; images: https:// doi.org/10.6084/m9.figshare.7884782) in SDEI, here designated. Type locality: Rostock [ Germany, Mecklenburg-Vorpommern] . Paralectotypes: see under Specimens examined .

Notes: the description of Blennocampa mentiens is based on a single specimen: “ Anm. Jag har ett exemplar[..]” ( Thomson 1871: 222). The name konowi was coined for female specimens with a pale abdomen. Similarly pale males also occur (see below). The pale male which we examined was reared from larvae collected at the same date and locality as a normal, dark female. All the very pale specimens were collected and emerged in August, whereas the few specimens collected in May were all dark-bodied.

Additional description. Body length: ♀ 4.5–6.0mm, ♂ 4.5mm. Pronotum narrowly edged with pale, to nearly completely pale. Tegulae pale. Female: antennae black. Abdomen black, except for row of small pale spots along midline of dorsum, area of hypopygium, and more or less apex of valvula 3, to completely pale (yellowish) except more or less valvula 3. Lancet: Fig. 31. Male: terga black and sterna pale, to abdomen completely pale. Antennae of European males black, but in three males from the Russian Far East these are black dorsally and pale ventrally. Penis valve: Fig. 26 .

Total number of specimens examined: 9♀, 4♂.

Similar species. Larger female specimens could be misidentified as clematidis , but the shape of the sawsheath should distinguish them. Furthermore, the distal sawteeth of the lancet of mentiens (Fig. 31) are more triangular and apically acute than those of clematidis (Fig. 29).

Figures

FIGURES 21–26. Pseudodineura species, penis valves; 21, enslini (15347) vl = ventroapical lobe. 22, parvula (31894) df = distal filament. 23, fuscula (31891). 24, clematidisrectae (31889). 25, clematidis (31843). 26, mentiens (31893).