ARGIDAE

Basov, S. A., 2024, Illustrated key to the Palaearctic genera of the sawfly family Argidae (Hymenoptera: Symphyta), with taxonomic notes, Russian Entomological Journal 33 (4), pp. 466-476 : 467-469

KEY TO THE PALAEARCTIC GENERA OF ARGIDAE

1. Cell R of fore wing closed ( Figs 2, 4 ). Vein Sc present ( Fig. 12 ). Antenna of males simple ( Fig. 5 ) ................... 2

– Cell R of fore wing open ( Fig. 3 ). Vein Sc absent or incomplete ( Fig. 13 ). Antenna of male bifurcate ( Fig. 6 ) ( Sterictiphorinae ) .................................................................... 10

2. Middle and often also hind tibiae with preapical spurs ( Fig. 7 ) ( Arginae , part) .................................................. 3

– All tibiae without preapical spurs ( Fig. 8 ) ....................... 5

3. Cell 2A of fore wing open ( Fig. 9 ) ..................................... ......................................... Pseudarge Gussakovskij, 1935

– Cell 2A of fore wing closed ( Fig. 10 ) ............................... 4

4. Abdominal tergites of males and females without long medial process or triangular swelling. Hind tibia always with preapical spur .................................... Arge Schrank, 1802

– Fifth abdominal tergite of male with long medial process ( Fig. 17 ), in females with slightly noticeable triangular swelling and inconspicuous median groove on tergites 4–6 ( Fig. 18 ). Hind tibia with or without preapical spur ........ ........................................................... Spinarge Wei, 1998

5. Cell 2A of fore wing open or absent, vein 2A+3A barely distinguishable or without clear apex (as in Figs 9, 11 ) ( Arginae , part) ..................................................................... 6

– Cell 2A of fore wing closed, vein 2A+3A distinctly sclerotised (as in Fig. 10 ) (Athermatinae) ............................... 7

6. Fore wing with three cells Rs. Vein 2r–m absent ( Fig. 4 ). Face below base of antenna not convex ( Fig. 14 ) ........... ................................................... Kokujewia Konow, 1902

– Fore wing with four cells Rs. Vein 2r–m present (as in Fig 2 ). Face below base of antenna strongly convex ( Fig. 15 ) ... ............................................. Asiarge Gussakovskij, 1935

7. Vein B of fore wing joins vein R well before (longer than vein Sc) junction point of vein M (as in Fig 13 ) ........... 8

– Veins B and M of fore wing join up at same point on vein R (as in Fig. 12 ) ................................................................. 9

8. Hind tibia and apical spurs flattened; head strongly enlarged behind eyes in dorsal view (see fig. 1I in Luo et al., 2019) ......................................... Athermantus W.F. Kirby, 1882

–. Hind tibia and spurs non flattened (as in Figs 7, 8 ); head not enlarged behind eyes in dorsal view (as in Fig. 16 ) ........ ....................................................... Cibdela Konow, 1899

9. Width of head only slightly less than width of thorax in dorsal view (see Figs 38, 43, 45, 49 in Liston et al., 2017). Sheath obtuse in lateral view, width of its base in dorsal view almost 2.0 times its length (see Figs 4, 5 in Liston et al., 2017) .............................. Pampsilota Konow, 1899

– Width of head considerably less than width of thorax in dorsal view ( Fig. 16 ). Sheath with acute apex in lateral view ( Fig. 24 ), width of its base in dorsal view equal to or slightly larger than length ( Fig. 23 ) .......................................... ........................................... Tanyphatnidea Rohwer, 1912

10. Vein Sc of fore wing present (as in Fig. 12 , also see Fig. 1 in Wei, 1997). Labial palps with 3 segments, maxillary palps with 5 segments. Right mandible simple, without basal tooth .................................... Ortasiceros Wei, 1997

– Vein Sc of fore wing absent ( Fig. 13 ). Labial palps with 4 segments, maxillary palps with 6 segments ( Fig. 19 ). Right mandible with basal tooth ( Fig. 21 ) ................... 11

11. Cell A of hind wing closed ( Figs 22, 23 ) ..................... 12

– Cell A of hind wing widely open (Fig. 26) ..................... 14

12. Veins B and M of fore wing join up at same point on vein R (as in Fig. 12 , also see Fig. 1C in Choi et al., 2015). Claws with angular basal lobe (see Fig. 2C in Choi et al., 2015). Process of cell A of hind wing almost 3.0 times its width (see Fig. 1C in Choi e t al., 2015) ..................................... ................................................ Yasumatsua Togashi, 1970

– Vein B of fore wing joins vein R well before (longer than vein Sc) junction point of vein M (as in Fig. 13 ). Claws without angular basal lobe ( Fig. 20 ). Petiole of cell A of hind wing less than 3.0 times its width ( Figs 22, 23 ) ........................................................ 13

13. Cell 2A of fore wing open (as in Fig. 11 ). Petiole of cell A of hind wing 2.0 times longer than its width ( Fig. 23 ) .... ................................................. Aprosthema Konow, 1899

– Cell 2A of fore wing closed (as in Fig. 10 ). Petiole of cell A of hind wing shorter than its width ( Fig. 22 ) ................... ............................................. Sterictiphora Billberg, 1820

14. Veins B and M of fore wing join up at same point on vein R (as in Fig. 12 ) ....................... Aproceros Malaise, 1931

– Vein B of fore wing joins vein R well before (longer than vein Sc) junction point of vein M (as in Fig. 13 ) ......... 15

15. Cell 2A of fore wing absent (as in Fig. 11 ) ..................... ............................. Pseudaprosthema Gussakovskij, 1935

– Cell 2A of fore wing closed (as in Fig. 10 ) ......................... .............................................. Schizocerella Forsius, 1927

Notes on the genera of Argidae known from the Palaearctic region (in alphabetical order)

Figures

Figs 2–15. Argidae, details of morphology: 2, 10, 12 — Arge ustulata (Linné, 1758); 3, 11 — Aproceros leucopoda Takeuchi, 1939; 4, 8, 14 — Kokujewia ectrapela Konow, 1902; 5 — Spinarge metallica (Klug, 1834); 6 — Aprosthema melanurum (Klug, 1814); 7, 9 — Pseudarge rubicunda Gussakovskij, 1935; 13 — Sterictiphora geminata (Gmelin, 1790); 15 — Asiarge regeli Gussakovskij, 1935. 2–4 — veins R and Rs of fore wing, dorsally; 5–6 — male antenna, dorsally; 7–8 — hind tibia, ventrally; 9–11 — cells 1A and 2A of fore wing, dorsally; 12–13 — vein R+M of fore wing, dorsally; 14–15 — head, laterally. Рис. 2–15. Argidae, детали морфологии: 2, 10, 12 — Arge ustulata (Linné, 1758); 3, 11 — Aproceros leucopoda Takeuchi, 1939; 4, 8, 14 — Kokujewia ectrapela Konow, 1902; 5 — Spinarge metallica (Klug, 1834); 6 — Aprosthema melanurum (Klug, 1814); 7, 9 — Pseudarge rubicunda Gussakovskij, 1935; 13 — Sterictiphora geminata (Gmelin, 1790); 15 — Asiarge regeli Gussakovskij, 1935. 2–4 — жилки R и Rs переднего крыла, дорсально; 5–6 — антенна самца, дорсально; 7–8 — Задние голени, вентрально; 9–11 — Ячейки 1А и 2А переднего крыла, дорсально; 12–13 — жилка R+M переднего крыла, дорсально; 14–15 — голова, латерально.

Figs 16–24. Argidae, details of morphology: 16, 24, 25 — Tanyphatnidea sinensis (W.F. Kirby, 1882); 17, 18 — Spinarge metallica (Klug, 1834); 19, 20, 21, 26 — Aproceros leucopoda Takeuchi, 1939; 22 — Sterictiphora geminata (Gmelin, 1790); 23 — Aprosthema melanurum (Klug, 1814); 16 — head and thorax, dorsally; 17–18 — medial tergites of abdomen, dorsally; 19 — labrum and right mandible, dorsally; 20 — claw, laterally; 21 — right mandible, dorsally; 22, 23, 26 — cell A of hind wing, dorsally; 24 — saw sheath, dorsally; 25 — saw sheath, laterally. Рис. 16–26. Argidae, детали морфологии: 16, 24, 25 — Tanyphatnidea sinensis (W.F. Kirby, 1882); 17, 18 — Spinarge metallica (Klug, 1834); 19, 20, 21, 26 — Aproceros leucopoda Takeuchi, 1939; 22 — Sterictiphora geminata (Gmelin, 1790); 23 — Aprosthema melanurum (Klug, 1814); 16 — голова и грудь, дорсально; 17–18 — медиальные тергиты брюшка, дорсально; 19 — нижнЯЯ губа и праваЯ мандибула, дорсально; 20 — коготок, латерально; 21 — праваЯ мандибула, дорсально; 22, 23, 26 — Ячейка A Заднего крыла, дорсально; 24 — ножны пилки, дорсально; 25 — ножны пилки, латерально.

Fig. 1. Venation of wings of Arge ustulata (Linné, 1758). Cells (in red): R — radial; 1Rs, 2Rs, 3Rs, 4Rs — 1st, 2nd, 3rd, 4th subradial; Sc– subcostal; B — basal; 1M, 2M, 3M — 1st, 2nd, 3rd medial; 1Cu, 2Cu — 1st, 2nd cubital; 1A — apical anal; 2A+3A — basal anal. Veins (in black): C — costal; Sc– subcostal; R — radial; Rs — subradial; M — medial; B — basal; Cu — cubital; 1A, 2A, 3A, 4A — 1st, 2nd, 3rd, 4th anal; 1r–m, 2r–m, 3r–m — 1st, 2nd, 3rd radio–medial; 1m–cu, 2m–cu — 1st, 2nd medial– cubital; cu–a — cubital–anal. Рис. 1. Жилкование крыльев Arge ustulata (Linné, 1758). Ячейки (красным цветом): R — радиальнаЯ; 1Rs, 2Rs, 3Rs, 4Rs — 1–Я, 2–Я, 3–Я, 4–Я субрадиальные; Sc — субкостальнаЯ; B — баЗальнаЯ; 1M, 2M, 3M — 1–Я, 2–Я, 3–Я медиальные; 1Cu, 2Cu — 1–Я, 2–Я кубитальные; 1A — апикальнаЯ анальнаЯ; 2A+3A — баЗальнаЯ анальнаЯ. Жилки (черным цветом): C — костальнаЯ; Sc — субкостальнаЯ; R — радиальнаЯ; Rs — субрадиальнаЯ; M — медиальнаЯ; B — баЗальнаЯ; Cu — кубитальнаЯ; 1A, 2A, 3A, 4A — 1–Я, 2–Я, 3–Я, 4–Я анальные; 1r–m, 2r–m, 3r–m — 1–Я, 2–Я, 3–Я радиально–медиальные; 1m–cu, 2m–cu — 1–Я, 2–Я медиально–кубитальные; cu–a — кубитально–анальнаЯ.