Vespula koreensis ( Radoszkowski, 1887 )

Nguyen, Lien Thi Phuong, Vu, Thuong Thi, Daglio, Anthony & Wiśniowski, Bogdan, 2019, Taxonomic review and distribution of the genus Vespula Thomson, 1869 (Hymenoptera: Vespidae: Vespinae) from Vietnam, Zootaxa 4691 (3), pp. 279-285 : 281-282

Vespula koreensis ( Radoszkowski, 1887)

( Fig. 2 : a–g)

Vespa koreensis Radoszkowski, 1887 , Horae Soc. Entomol. Ross. 21: 432, male, female - “Korée” (lectotype female London).

Vespula koreensis is known to occur from india in the west to korea, siberia, Amur and Primor’ye of Russia in the east ( Daglio, 2019). In Vietnam, this species has two color forms: one is brighter with more yellow and brown ( Fig. 2c ), and the other is darker with less yellow ( Fig. 2d ). The species has been recorded by Nguyen et al. (2006), and is also recorded from Cao Bang, Lang Son, Vinh Phuc, Bac Giang and Quang Tri in this study.

Material examined: Cao Bang: 1 queen , Thang Hen Lake, Quoc Toan, Tra Linh , 28.IV.2015, LTP Nguyen; 6 work- ers , Thanh Cong, Nguyen Binh, 22°32’37’’N, 105°52’10.4’’E, 7.VIII.2012, J Kojima, H Nugroho & IED-c ; 3 work- ers, Thanh Cong , Nguyen Binh , 22°32’29.7’’N, 105°52’51.7’’E, 8.VIII.2012, J Kojima, H Nugroho & IED-c ; Thai Nguyen: 1 worker , Than Xa, Vo Nhai , 14.X.2014, ISD-c ; Tuyen Quang: 1 male , I.2018, Malaise trap, DL Khuat; Lang Son: 10 workers , Na Sen, Hoang Dong, 21°51’42’’N, 106°43’54’’E, 31.X.2014, DD Nguyen, LTP Nguyen & MP Nguyen ; Phu Tho: 1 worker , Xuan Son NP, 600 m a.s.l., 13. VI.2004, LTP Nguyen; 1 worker , Ha Hoa , 9. V.2019, TT Vu ; Vinh Phuc: 1 worker , Tam Dao , 900-1200 m a.s.l., 30.VII-3.VIII.2012, DT Tran ; Bac Giang: 1 worker , Dong Bay , An Lac , Son Dong, 16. V.2013, DD Tran; 1 worker , Khe Ro, Son Dong, 17. V.2013, DD Tran; 4 workers , Khe Ro , An Lac , Son Dong, 21°20’27.2’’N, 106°58’07’’E, 11.VIII.2012, J Kojima, H Nugroho & IED-c; 5 work- ers, Dong Bay , An Lac , Son Dong, 21°20’42.8’’N, 106°56’31.1’’E, 12.VIII.2012, J Kojima, H Nugroho & IED-c ; Quang Tri: 1 worker , Sa Mu Pass, Huong Phung, Huong Hoa , 900-1000 m a.s.l., 6. VI.2006, ISD-c .

Queen description: Body length: 16 mm; Forewing length: 15.2 mm. Propodeum very coarsely rugose over all its surface and without punctures. Gena, mesoscutellum and metanotum with dense and strong punctures. First metasomal tergum raised basally with a depression behind this elevation. Body black, with following part yellow: clypeus except margins black, mandible except base and teeth black, ocular sinus, a large mark on frons ( Fig. 2a ), gena, thick band on metasomal tergum 3-6 ( Fig. 2b ), upper part of fore tibia, all tarsi.

Figures

FIGURE 2. Vespula koreensis. a. Queen, frontal view; b. Queen, habitus; c. Male head, frontal view; d. Male genitalia, dorsal view and apical margin of tergum 7; e. Parameral spine; f. Worker, habitus, bright form; g. Worker, habitus, darker form. Scale: 1mm.