Tersilochus Holmgren, 1859

Khalaim, Andrey I., Balueva, Ekaterina N., Kim, Ki-Beom & Lee, Jong-Wook, 2014, Review of the genus Tersilochus Holmgren (Hymenoptera, Ichneumonidae, Tersilochinae) from South Korea, Journal of Hymenoptera Research 36, pp. 27-51 : 28

publication ID	https://dx.doi.org/10.3897/jhr.36.6548
publication LSID	lsid:zoobank.org:pub:EA8A0BAB-634F-4860-9E75-F8FB53179509
persistent identifier	https://treatment.plazi.org/id/01D78A04-328F-91F3-56D6-2E4E98643B27
treatment provided by	Journal of Hymenoptera Research by Pensoft
scientific name	Tersilochus Holmgren, 1859
status

Treatment

Type species.

Thersilochus cognatus Holmgren, 1860 (= jocator Holmgren, 1859) ( Horstmann 2005: 1269-1270).

All Korean species have occipital carina complete, scutellum with lateral longitudinal carinae developed only at its basal part, fore wing with second recurrent vein distinctly postfurcal and legs slender with tarsal claws not pectinate.

Key to species of Tersilochus occurring in South Korea

1	Second tergite 2.0-2.5 times as long as anteriorly broad. Thyridial depression distinctly elongate. First tergite very slender, about 5.0 times as long as posteriorly broad, smooth, with small glymma situated in apical 0.6-0.7 of first tergite. [Malar space about as long as basal width of mandible. Ovipositor with weak dorsal subapical depression, without teeth, its sheath about twice as long as first tergite.] (Subgenus Gonolochus Förster)	Tersilochus caudatus
-	Second tergite 0.8-1.5 times as long as anteriorly broad ( Figs 13 View Figures 9–14 , 17 View Figures 15–22 , 27 View Figures 23–30 , 30 View Figures 23–30 , 40 View Figures 38–44 , 49 View Figures 45–51 , 60 View Figures 52–61 , 70 View Figures 69–70 ). Thyridial depression short, distinctly transverse or as long as broad ( Figs 13 View Figures 9–14 , 17 View Figures 15–22 , 27 View Figures 23–30 , 30 View Figures 23–30 , 40 View Figures 38–44 , 49 View Figures 45–51 , 60 View Figures 52–61 , 70 View Figures 69–70 ) (except Tersilochus fidicinus sp. n. with thyridial depression 1.5 times as long as broad). First tergite shorter, 2.5-3.0 times as long as posteriorly broad ( Figs 27 View Figures 23–30 , 30 View Figures 23–30 , 40 View Figures 38–44 , 60 View Figures 52–61 , 70 View Figures 69–70 ) (except Tersilochus granulatus with first tergite 4.5 times as long as broad, Fig. 17 View Figures 15–22 ), usually striate laterally, with glymma often deep and large, and usually situated at or slightly behind center of first tergite. (Subgenus Tersilochus s. str.)	2
2	Mesopleuron centrally distinctly punctate, smooth between punctures ( Fig. 46 View Figures 45–51 ). Fore wing with metacarpus almost reaching apex of fore wing. Finger-shaped subapical structures present on outer surface of flagellomeres 2 to 6 ( Fig. 44 View Figures 38–44 ). Flagellum with 26 segments ( Fig. 43 View Figures 38–44 ). Ovipositor very short, its sheath about 0.6 times as long as first tergite ( Figs 48 View Figures 45–51 , 50 View Figures 45–51 )	Tersilochus punctator sp. n.
-	Mesopleuron densely granulate, impunctate or with fine punctures ( Figs 2 View Figures 1–8 , 9 View Figures 9–14 , 24 View Figures 23–30 , 29 View Figures 23–30 , 56 View Figures 52–61 , 66 View Figures 62–68 ). Fore wing with metacarpus not reaching apex of fore wing ( Figs 11 View Figures 9–14 , 25 View Figures 23–30 , 35 View Figures 31–37 , 58 View Figures 52–61 , 69 View Figures 69–70 ). Finger-shaped subapical structures absent on flagellomere 2, present on flagellomeres 3(4) to 6(7) ( Figs 8 View Figures 1–8 , 21 View Figures 15–22 , 34 View Figures 31–37 , 55 View Figures 52–61 , 65 View Figures 62–68 ). Flagellum with 17-21 segments ( Figs 1 View Figures 1–8 , 7 View Figures 1–8 , 20 View Figures 15–22 , 28 View Figures 23–30 , 31 View Figures 31–37 , 54 View Figures 52–61 , 64 View Figures 62–68 ). Ovipositor longer, sometimes very long, its sheath 0.7-3.0 times as long as first tergite ( Figs 3 View Figures 1–8 , 12 View Figures 9–14 , 18 View Figures 15–22 , 26 View Figures 23–30 , 36 View Figures 31–37 , 59 View Figures 52–61 , 68 View Figures 62–68 )	3
3	Head, in dorsal view, weakly to moderately rounded and very strongly tapered behind eyes ( Figs 16 View Figures 15–22 , 53 View Figures 52–61 ). Clypeus flat ( Fig. 52 View Figures 52–61 ). Small species with body length 3.2-4.0 mm and fore wing length 2.4-2.8 mm	4
-	Head, in dorsal view, strongly rounded, weakly tapered just behind eyes ( Figs 6 View Figures 1–8 , 19 View Figures 15–22 , 33 View Figures 31–37 , 63 View Figures 62–68 ). Clypeus conspicuously bent backwards in lower 0.3-0.4 (with transverse bend, as in European Tersilochus jocator Holmgren; except Tersilochus obstinatus sp. n., which has clypeus strongly truncate, probably abnormal). Body length 3.7-5.1 mm and fore wing length 2.8-3.9 mm	5
4	Propodeum with basal keel ( Fig. 17 View Figures 15–22 ); all carinae weak (sometimes partly indistinct), without adjacent wrinkles. First tergite brown, entirely smooth, very slender, about 4.5 times as long as broad posteriorly ( Figs 15 View Figures 15–22 , 17 View Figures 15–22 ). Second tergite elongate, about 1.5 times as long as broad anteriorly ( Fig. 17 View Figures 15–22 ). Ovipositor without dorsal subapical teeth, its sheath about 0.75 times as long as first tergite	Tersilochus granulatus Khalaim
-	Propodeum with basal area ( Fig. 57 View Figures 52–61 ); all carinae strong, transverse carina with short adjacent wrinkles ( Fig. 57 View Figures 52–61 ). First tergite black, less slender, 3.0 times as long as broad posteriorly, with petiole distinctly striate laterally and dorsally ( Fig. 60 View Figures 52–61 ). Second tergite transverse, 0.8 times as long as broad anteriorly ( Fig. 60 View Figures 52–61 ). Ovipositor with two dorsal subapical teeth ( Fig. 61 View Figures 52–61 ), its sheath 1.25 times as long as first tergite ( Fig. 59 View Figures 52–61 )	Tersilochus serratus sp. n.
5	Eyes conspicuously enlarged; temple short, almost 0.6 times as long as eye width ( Fig. 33 View Figures 31–37 ). [Flagellum brown ( Fig. 31 View Figures 31–37 ). Metasoma behind first tergite brownish yellow ( Fig. 36 View Figures 31–37 ). Ovipositor short, with dorsal subapical notch, its sheath as long as first tergite ( Figs 36 View Figures 31–37 , 37 View Figures 31–37 ).]	Tersilochus obstinatus sp. n.
-	Eyes not enlarged; temple longer, 0.75-0.85 times as long as eye width ( Figs 6 View Figures 1–8 , 19 View Figures 15–22 , 63 View Figures 62–68 )	6
6	Eyes with inner orbits weakly but distinctly convergent dorsally ( Fig. 5 View Figures 1–8 ). Ovipositor short, apically clavate, its sheath slightly shorter than first tergite ( Fig. 12 View Figures 9–14 )	Tersilochus gangwonus sp. n.
-	Eyes with inner orbits more or less parallel ( Figs 23 View Figures 23–30 , 62 View Figures 62–68 ). Ovipositor apically not clavate, its sheath sometimes much longer than first tergite ( Figs 3 View Figures 1–8 , 26 View Figures 23–30 , 68 View Figures 62–68 )	7
7	Malar space short, 0.4-0.6 times as long as basal width of mandible	8
-	Malar space almost as long as basal width of mandible	9
8	Metasoma behind first tergite yellow-brown ( Figs 18 View Figures 15–22 , 26 View Figures 23–30 ). Thyridial depression strongly transverse ( Fig. 27 View Figures 23–30 ). Ovipositor short, apically thin and without distinct dorsal notch, its sheath 0.7 times as long as first tergite ( Fig. 26 View Figures 23–30 )	Tersilochus iracundus sp. n.
-	Metasoma behind first tergite predominantly dark brown ( Fig. 3 View Figures 1–8 ). Thyridial depression 1.5 times as long as broad. Ovipositor longer, with sharp dorsal subapical notch ( Fig. 4 View Figures 1–8 ), its sheath 1.7-1.8 times as long as first tergite ( Fig. 3 View Figures 1–8 )	Tersilochus fidicinus sp. n.
9	Propodeal spiracle separated from pleural carina by 2.0-2.5 times diameter of spiracle ( Fig. 29 View Figures 23–30 ). Flagellum with finger-shaped subapical structures on outer surface of flagellomeres 4 to 7. Ovipositor short and robust, evenly upcurved, with sharp dorsal subapical notch, its sheath 1.25 times as long as first tergite	Tersilochus nigellus sp. n.
-	Propodeal spiracle adjacent to pleural carina ( Fig. 66 View Figures 62–68 ). Flagellum with finger-shaped subapical structures on outer surface of flagellomeres 3 to 6 ( Fig. 65 View Figures 62–68 ). Ovipositor much longer, apically thin and strongly upcurved, its sheath almost 3.0 times as long as first tergite ( Fig. 68 View Figures 62–68 )	Tersilochus uncinatus sp. n.