Trichoceridae

Petrašiūnas, Andrius & Podenas, Sigitas, 2017, New data on winter crane flies (Diptera: Trichoceridae) of Korea with description of a new species, Zootaxa 4311 (4), pp. 561-575 : 573-574

Key to species of Trichoceridae known from Korea

1. Relatively small in size, wing 4–6 mm long, D-cell pentagonal, first tarsal segment very short, only about 1/10 of the second segment............................................ Subfamily Paracladurinae , Paracladura rasnitsyni Krzemińska

- Larger in size, wings mostly 7–9 mm long; D-cell more triangular, first tarsal segment long, up to twice as long as the second segment........................................................................ Subfamily Trichocerinae , 2

2. Wing patterned, dark areas over the base of vein Rs, cross-veins r-m, r-r, around D-cell, over the radial vein area and medial veins, at the end of A2 ( Fig. 1–6 )......................................... T. (S.) maculipennis punctipennis Brunetti

- Wing unpatterned ( Fig. 7 ), or at most with a spot over cross-vein r-m ............................................ 3

3. Gonostylus with one or more conspicuous processes at mid-length.............................................. 4

- Gonostylus without processes at mid-length; at most with an inconspicuous basal tubercle........................... 6

4. Gonostylus with one triangular, acute process at mid-length; apex of gonostylus hooked ( Fig. 20 )..................................................................................................... T. (T.) sakaguchii Alexander

- Gonostylus with two or three processes....................................................................5

5. Gonostylus with one long, straight process at base and one smaller process closer to apex ( Fig. 24 )... T. (T.) sibirica Edwards

- Gonostylus with one long, slightly bent process at base and two processes at apex, forming a “V” shape ( Fig. 25 ). Distal wing cells with macrotrichia............................................................ T. (T.) mirabilis Alexander

6. Pleuron with setae on both anepimeron and metepisternum ( Fig. 23 ).................. T. (S.) sparsa Starý & Martinovský

- Pleuron bare or rarely with one or two setae either on anepimeron or metepisternum.................................7

7. Ventrobasal lobes of gonocoxites not fused, with a clear gap (i.e. gonocoxal bridge incomplete, Figs. 22, 23 )............. 8

- Ventrobasal lobes of gonocoxites fused, forming a complete bridge ( Figs. 17–21 )...................................9

8. Ventrobasal lobes of gonocoxites rather narrow, forming a high arc ( Fig. 22 ). Usually a clear spot is visible on r-m, tarsal claw only slightly shorter than the last tarsal segment...................................... T. (S.) regelationis (Linnaeus)

- Ventrobasal lobes wide, they form a rather low arc ( Fig.26–27 ). Wings clear, tarsal claw equals half of the last tarsal segment ( Fig. 29 )........................................................................... T. (S.) latipons sp. nov.

9. Gonostylus longer than gonocoxite, slightly bent at mid-length, slightly sinuous, without basal tubercle ( Fig. 19 ); one of the

largest species, wing length 8–9 mm ...................................................... T. (T.) major Edwards - Gonostylus approximately equal in length to gonocoxite, with tooth-like or smaller triangular tubercle at base.......... 10

10. Basal tubercle of gonostylus thin and acute, tooth-like ( Fig. 18 ). Sternite IX with an outgrowth at median, directed toward the bridge (not clearly visible in all specimens)............................................. T. (T.) hiemalis (De Geer)

- Basal tubercle triangular and blunt ( Fig. 17 ). Sternite IX lacking median outgrowth.................................................................... T. (T.) tuberculifera Alexander ( T. latilobata ( Fig. 21 ) should key out here as well).

Figures

FIGURES 1 – 9. Wings of: 1. Trichocera (Saltrichocera) sapporensis holotype, Japan, Sapporo, Sept. 1922, male (USNM); 2. T. (S.) maculipennis punctipennis S. Korea, Odaesan NP, 30.10 – 28.11.2013, male (NIBR); 3. T. (S.) maculipennis punctipennis S. Korea, Odaesan NP, 30.10 – 28.11.2013, female (NIBR); 4. T. (S.) maculipennis pictipennis Russia, Sidemi, 0 7.10. 1897, female (ZIN); 5. T. (S.) punctipennis India, Simla Hills, 25.04. 1907, male (BMNH) (part of the abdomen is visible through the basis of the wing); 6. T. (S.) punctipennis (Brunetti, 1912); 7. T. (T.) tuberculifera allotype, N. Korea, Seren Mts., 0 3.10. 1937, female (USNM); 8. T. (S.) latipons sp. nov., paratype, S. Korea, Gyeonggi-do, Jeokmok-ri, 25.10. 2015, male (KU); Male terminalia: 9. Paracladura rasnitsyni, North Korea, Ompo, 28.05. 1938, dorsal and lateral view with long hook-like parameres (USNM). Scale bar = 0.2 mm. Abbreviation: p—parameres.

FIGURES 20 – 30. 20. T. (T.) sakaguchii North Korea, Ompo, 0 3.11. 1937, male terminalia (USNM); 21. T. (M.) latilobata, male terminalia (from Alexander, 1938). 22. T. (S.) regelationis S. Korea, Gangwon-do Province, Jeokmok-ri, 0 2.01. 2015, male terminalia (KU); 23. T. (S.) sparsa S. Korea, Odaesan NP, 30.10 – 28.11.2013, male terminalia (NIBR); 24. T. (T.) sibirica North Korea, Seren Mountains, 0 3.10. 1937, male terminalia (USNM); 25. T. (T.) mirabilis N. Korea, Ompo, 0 5.11. 1937, male terminalia (USNM). Trichocera (Saltrichocera) latipons sp. nov. paratype male, S. Korea, Gyeonggi-do, Jeokmok-ri, 25.10. 2015 (KU): 26 – 27. Male terminalia; 28. Aedeagal complex, lateral view; 29. Tarsus with a claw; 30. Antennae, basal flagellomeres. Scale bar = 0.2 mm. Abbreviation: b—gonocoxal bridge.

FIGURES 10 – 19. 10. T (S.) sapporensis holotype, Japan, Sapporo, Sept. 1922, male terminalia (USNM); 11. T. (S.) maculipennis punctipennis S. Korea, Odaesan NP, 30.10 – 28.11.2013, male terminalia (NIBR). 12. T. (S.) punctipennis India, Naini Tal., 0 1.03. 1934, Brit. Mus. 1934 – 263, male terminalia (BMNH). 13. T. (S.) punctipennis India, Naini Tal., 15.02. 1934, Brit. Mus. 1934 – 143, female terminalia (BMNH). Trichocera (T.) tuberculifera: 14 Allotype, female terminalia, 15 – 17 Holotype # 6549 male, N. Korea, Seren Mts., 0 3.10. 1937 (USNM); 15. tarsus with a claw; 16. antenna; 17. male terminalia. 18. T. (T.) hiemalis, S. Korea, Jeollabuk-do Province, Piagol village, 27.04. 2012, male terminalia (NIBR); 19. T. (T.) major holotype, Great Britain, Shefford Beds, 17.11. 1917, male terminalia (BMNH). Scale bar = 0.2 mm. Abbreviation: p—parameres.