New remarkable species of the subgenus Stigmatodipogon Ishikawa, 1965 of the genus Dipogon Fox, 1897 (Hymenoptera: Pompilidae) from Thailand and India
Creators: name: Loktionov, Valery M.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy

description: Key to species
Females (modified from Shimizu et al. 2018 and Loktionov & Lelej 2019)
(unknown in D. (S.) lao Loktionov & Lelej, 2018)
1. Fore wing without fasciae (Fig. 15). Body integument strongly polished (Figs 8, 9). Frons (Fig. 14) and disc of propodeum (Fig. 13) smooth, with indistinct punctures. (North-eastern India).................... D. (S.) himalayensis Loktionov, sp. nov.
- Fore wing with basal and preapical fasciae. Body integument not strongly polished, but sculptured and mostly matt. Frons and disc of propodeum matt, shagreened or weakly polished, with distinct punctures................................... 2
2. Legs mostly yellowish-brown........................................................................... 3
- Legs dark brown or black............................................................................... 4
3. Gena in dorsal view developed, roundly receding posteriorly (Shimizu et al. 2018: fig. 1A). Frons impunctate with minute setiferous pores (Shimizu et al. 2018: fig. 1B). (Russian Far East: Kunashir Is.)....... D. (S.) budrisi (Loktionov & Lelej)
- Gena in dorsal view not developed, strongly receding posteriorly (Shimizu et al. 2018: fig. 3F). Frons densely and finely punctate (Shimizu et al. 2018: fig. 3A). (Japan: Hokkaido, Honshu)............................ D. (S.) kurokawai Shimizu
4. Frons minutely punctate, intervals almost smooth and strongly polished (Shimizu et al. 2018: fig. 9A). Propodeum with sublateral narrow groove behind stigma (Shimizu et al. 2018: fig. 9B). (Japan: Honshu)............... D. (S.) tanakai Ishikawa
- Frons shagreened and matt (Shimizu et al. 2018: fig. 6A) or densely punctate, intervals alutaceous and weakly polished (Shimizu et al. 2018: fig. 7A). Propodeum without sublateral groove behind stigma................................... 5
5. Frons shagreened and matt (Fig. 3; Shimizu et al. 2018: fig. 6A). Gena in dorsal view strongly receding (Shimizu et al. 2018: fig. 6B)............................................................................................. 6
- Frons densely punctate and polished, interspace of punctures alutaceous and weakly polished (Shimizu et al. 2018: fig. 7A). Gena in dorsal view weakly receding (Shimizu et al. 2018: fig. 7B)............................................. 7
6. Vertex in dorsal view with posterior margin straight (Loktionov & Lelej 2019: fig. 4). Gena and propleuron with scattered long pale setae (Loktionov & Lelej 2019: fig. 5). F1 length 5.25 × its maximum width. Propodeum strongly and densely punctate. Basal petiole of T1 distinctly parallel-sided medially (Loktionov & Lelej 2019: fig. 7). (Northern Thailand)......................................................................................... D. (S.) siam Loktionov & Lelej
- Vertex in dorsal view with posterior margin concave (Shimizu et al. 2018: fig. 6B). Gena and propleuron without setae. F1 length 5.6–6.5 × its maximum width. Propodeum minutely reticulo-rugulose. Basal petiole of T1 not parallel-sided medially (Shimizu et al. 2018: fig. 6G). (Japan: Honshu)................................... D. (S.) macrostigmatus Ishikawa
7. Basal petiole of T1 long and distinctly parallel-sided medially (Fig. 6; Loktionov & Lelej 2019: fig. 16). Apical half of clypeus yellowish-brown (Fig. 3; Loktionov & Lelej 2019: fig. 13).................................................... 8
- Basal petiole of T1 shorter and not parallel-sided medially (Shimizu et al. 2018: fig. 7F; Kochetkov & Loktionov 2019: fig. 7). Clypeus entirely black (Shimizu et al. 2018: fig. 7A)......................................................... 9
8. Four apical flagellomeres yellow-brown (Figs 1–3). Pterostigma wide, its length 3.2 × its maximum width, and its length 1.05× SMC2 and SMC3 length combined together on vein M (Fig. 7). F1 length 3.6 × its maximum width. POD: OOD = 1.25. (Northern Thailand)..................................................... D. (S.) chiangmai Loktionov, sp. nov.
- Four apical flagellomeres black (Loktionov & Lelej 2019: fig. 11). Pterostigma narrow, its length 3.75 × its maximum width, and its length 0.9 × SMC2 and SMC3 length combined together on vein M (Loktionov & Lelej 2019: Fig. 18). F1 length 4.5–4.8 × its maximum width. POD: OOD = 1.0–1.05. (Northern Laos)................... D. (S.) wasbaueri Loktionov & Lelej
9. Hind claw dentate, with strong tooth preapically. POD: OOD = 1.56. F1 length 3.6 × its maximum width. (Russia: Amur Prov.).......................................................... D. (S.) khinganicus (Kochetkov & Loktionov)
- Hind claw edentate or with minute tooth preapically. POD: OOD = 1.0–1.28. F1 length 4.6–5.3 × its maximum width. (Russia: Irkutsk Prov., Primorskii Terr.)........................................................ D. (S.) petiolatus Lelej
description: Published as part of Loktionov, Valery M., 2020, New remarkable species of the subgenus Stigmatodipogon Ishikawa, 1965 of the genus Dipogon Fox, 1897 (Hymenoptera: Pompilidae) from Thailand and India, pp. 294-300 in Zootaxa 4755 (2) on pages 298-299, DOI: 10.11646/zootaxa.4755.2.5, http://zenodo.org/record/3731639