Empria tridentis Lee & Ryu, 1996

Park, Bia, Prous, Marko & Lee, Jong-Wook, 2019, Taxonomic review of the genus Empria Lepeletier & Serville (Hymenoptera, Tenthredinidae) in South Korea: morphological and molecular identification of two new species, Journal of Hymenoptera Research 74, pp. 1-25 : 1

Empria tridentis Lee & Ryu, 1996

Figs 1C, D, F, H, K, L , 6B , 7B

Empria tridentis Lee & Ryu, 1996: 23.

Diagnosis.

Female ( Figs 1C, F, K , 6B ). Body length 5.8-6.1 mm. Head and thorax black (clypeus pale in lower margin), except labrum, posterodorsal margin of pronotum, tegula, apex of all femora, basal 1/3 of fore and middle tibiae, basal 2/3 (mostly) of hind tibia, basal half of middle and hind tarsomere 1 white (pale); cenchrus, all trochanters and trochantelli yellowish brown; apical 2/3 of fore tibia, fore tarsus and middle tibia anteriorly brown; mandible at apex reddish dark brown; labial and maxillary palps dark brown; abdomen dark brown, abdominal terga with 3-4 pairs of whitish (pale) patches (the tergum 5 with small-sized or indistinct patch) ( Fig. 1C, F, K ). Malar space 1.7-1.9 times as long as diameter of median ocellus ( Fig. 1K ). Flagellum 2.3-2.5 times as long as head width. Ovipositor sheath only reaching beyond apex of abdomen; dorsal and ventral margins slightly convergent and apex obliquely truncated ( Fig. 1F ). Lancet with about 17 serrulae, membrane between serrulae weakly convex; each serrula subtriangularly protruding basally ( Fig. 6B ), with a basal denticle and 2-7 distal denticles.

Male ( Figs 1D, H, L , 7B ). Body length 4.7-5.1 mm. Similar to female, but fore leg much paler than female; middle tibia anteriorly and hind tibia at base white (pale); middle and hind tarsomere 1 entirely dark brown; sometimes abdominal segments with narrow posterior whitish margins ( Fig. 1D, H, L ). Malar space 1.4-1.6 times as long as diameter of median ocellus ( Fig. 1L ). Flagellum 3.6-3.7 times as long as head width. Posterior margin of sternum 9 rounded. Penis valve as in Fig. 7B , valviceps almost equal in length to valvura.

Genetic data.

Based on the barcode region of two available COI sequences (Japan), the distance between them is 0.2%. The nearest neighbours are species of the E. longicornis group, diverging by a minimum of 4.9%. Based on the nuclear data of one specimen (Japan), the nearest neighbours are species of the E. longicornis group, diverging by a minimum of 2.4%.

Type specimens examined.

South Korea: ♀, holotype of Empria tridentis (YNU-Sym-0011), " Gangwon-do , Goseong-gun, Hyangnobong, 38°19'N, 128°18'E, 13.V.1992, S.M. Ryu " (YNU) ; 8♀♀, paratypes of Empria tridentis (YNU-Sym-1115~1121, 1123), "same data as holotype" (1♀ in CSCS, 2♀♀ in NIBR, 5♀♀ in YNU) .

Additional specimens examined.

South Korea: 1♂, Gangwon-do, Pyeongchang-gun, Mt. Balwangsan , 11.VI.2000, J.W. Lee (YNU) ; 1♀ 4♂♂, Gangwon-do, Wonju-si, Mt. Baegunsan , 37°15'30.5"N, 127°58'55.11"E, 19.V-6.VI.2011, H.Y. Han (YNU) ; 2♂♂, same data, J.W. Lee (YNU) ; 2♂♂, Gangwon-do, Wonju-si, Panbu-myeon , Mt. Baegunsan , 28.IV-24.V.2012, H.Y. Han (YNU) ; 1♀ 1♂, Jeollanam-do, Jangseong-gun, Bukha-myeon, Hyangnobong , 37°27'00"N, 126°51'00"E, 13.V.1992, J.W. Lee (YNU) ; 3♀♀ 1♂, same locality, 13.VI.1992, J.W. Lee (1♀ 1♂ in NSMT, 2♀♀ in YNU) .

Host plants.

Rosaceae : Filipendula camtschatica (Pall.) Maxim., Geum japonicum ( Shinohara et al. 2015).

Distribution.

Japan, Russia ( Prous et al. 2011a), South Korea ( Lee and Ryu 1996).

Figures

Figure 1. Empria spp.: A, B, E, G, I, J E. candidata from Gangwon, South Korea C, D, F, H, K, L E. tridentis, female from Jeonnam and male from Gangwon, South Korea A, C dorsal habitus, female B, D dorsal habitus, male E, F lateral habitus, female G, H lateral habitus, male I, K frontal head, female J, L frontal head, male. Scale bars: 2 mm (A-D); 1 mm (E-H); 0.5 mm (I-L).

Figure 6. Female lancets. A Empria candidata from Gangwon, South Korea B E. tridentis from Gangwon, South Korea C E. wui from Shanxi, China (W 08 - 03 a) D E. zhangi from Jeonnam, South Korea E E. lycroi, sp. nov. from Primorsky Krai, Russia (paratype, NSMT 232) F E. nigroterga, sp. nov. from Daejeon, South Korea (paratype, YNU-Sym 1176). Scale bars: 0.1 mm (A-F).

Figure 7. Male penis valves. A Empria candidata from Gangwon, South Korea B E. tridentis from Gangwon, South Korea C E. wui from Gyeongbuk, South Korea D E. zhangi from Jeonnam, South Korea E E. lycroi, sp. nov. from Primorsky Krai, Russia (paratype, DEI-GISHym 83873) F E. nigroterga, sp. nov. from Gyeongbuk, South Korea (paratype, YNU-Sym 1173). Scale bars: 0.1 mm (A-F).