Pagastia Oliver 1959
Creators: name: Makarchenko, Eugenyi A.
name: Semenchenko, Alexander A.
name: Palatov, Dmitry M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Pagastia

description: Key to the known species of Pagastia Oliver
Males
1. Eyes hairy. Aedeagal lobes reduced (subgenus Hesperodiamesa Sublette). Basal lobe of gonocoxite small................................................................... P. (H.) sequax (Garrett, 1925) (Makarchenko 2019, Fig. 18)
- Eyes bare or pubescent. One or two aedeagal lobes present (subgenus Pagastia Oliver). Basal lobe of gonocoxite large... 2
2. Both median and lateral aedeagal lobes present.............................................................. 3
- Only lateral aedeagal lobe present........................................................................ 8
3. Antepronotum with dorsal and lateral setae in widely separated groups. Median aedeagal lobe digitated, widest in distal part or wedge-shaped and widest at base......................................................................... 5
- Antepronotum completely covered with setae. Median aedeagal lobe widest medially, with apex forming a sharp hook or wedge-shaped, with fingerlike apex....................................................................... 4
4. Median aedeagal lobe widest medially, then tapering abruptly and with the apex forming a sharp hook............................................................. P. (Pagastia) partica (Roback, 1957) (Makarchenko 2019, Figs.16 –17)
- Median aedeagal lobe wedge-shaped, with finger-like apex............................ P. (P.) hanseni sp. nov. (Fig. 7)
5. Median aedeagal lobe digitated, widest in distal part......................................................... 6
- Median aedeagal lobe wedge-shaped, with toothed apex...................... P. (P.) caelestomontana sp. nov. (Fig. 2)
6. Gonostylus subapical with “heel”.................. P. (P.) nivis (Tokunaga, 1936) (Makarchenko 2006, Fig. 180, 5–10)
- Gonostylus subapical without “heel”..................................................................... 7
7. Apex of the gonostylus is angled............... P. (P.) orientalis (Tshernovskij, 1949) (Makarchenko 2006, Fig. 181, 1–5)
- Apex of the gonostylus is broadly rounded.............................................................................................. P. (P.) altaica Makarchenko, Kerkis et Ivanchenko, 1997 (Makarchenko et al. 1997, Fig. 1)
8. Anal point absent. Alula as well as M
1+2
, M
3+4
, and Cu
1
of wing with setae................................................................................. P. (P.) subletteorum Makarchenko (Makarchenko 2019, Figs. 1–6, 19–20)
- Anal point present. Alula and M 1+2, M 3+4, Cu 1 without setae.................................................... 9
9. Anal point almost parallel-sided in dorsal view; lateral aedeagal lobe tapering to thin apex.......................... 10
- Anal point tapering to apex; lateral aedeagal lobe broad in distal part........................................... 12
10. Anal point with rounded apex and without apical peg ... P. (P.) orthogonia Oliver, 1959 (Makarchenko 2019, Figs. 7–13, 21)
- Anal point with pointed apical peg....................................................................... 11
11. Gonostylus with small basal lobe in outer side; apical part rounded, without “heel”. AR 1.56–1.75........................................................................... P. (P.) hidakamontana Endo, 2004 (Endo 2004, Figs. 1–6)
- Gonostylus with rounded basal lobe in outer side and with lobe like “heel” in apical part. AR 1.22–1.26......................................... P. (P.) donoliveri Makarchenko et Hansen, 2020 (Makarchenko & Hansen 2020, Figs. 4, 6–7, 9)
12. Anal point narrow, tapering to pointed apex, without apical peg; gonostylus in basal part with outer angle-shaped projection. AR 2.18–2.42................. P. (P.) tianmumontana Makarchenko et Wang, 2017 (Makarchenko &Wang 2017, Fig. 17)
- Anal point widest in basal part and thin apically, pointed and sometimes with apical peg; gonostylus without outer basal projec- tion and with rounded apex. AR 1.81–2.10........ P. (P.) lanceolata (Tokunaga, 1936) (Makarchenko 2006, Fig. 180, 1–4)
description: Published as part of Makarchenko, Eugenyi A., Semenchenko, Alexander A. & Palatov, Dmitry M., 2021, New species and findings of Pagastia Oliver (Diptera: Chironomidae: Diamesinae) from Central Asia, with DNA barcoding of known species of the genus, pp. 559-570 in Zootaxa 4951 (3) on page 561, DOI: 10.11646/zootaxa.4951.3.8, http://zenodo.org/record/4668485