Stictoleptura variicornis (Dalman, 1817)

Karpinski, Lech, Szczepanski, Wojciech T., Boldgiv, Bazartseren & Walczak, Marcin, 2018, New data on the longhorn beetles of Mongolia with particular emphasis on the genus Eodorcadion Breuning, 1947 (Coleoptera, Cerambycidae), ZooKeys 739, pp. 107-150 : 111

Stictoleptura variicornis (Dalman, 1817) Fig. 1B, C

Material examined.

Selenge Aimag: 40 km NE of Zuunkharaa, dark taiga (48°57'N, 107°05'E), 1270 m a.s.l., 04 VIII 2015, 3♂♂, 3♀♀, on Filipendula palmata , 7♂♂, 3♀♀, on Chamaenerion angustifolium , leg. MW; 10♂♂, 2♀♀, on Filipendula palmata , leg. WTS; 3♂♂, on Filipendula palmata , leg. LK; 35 km NE of Zuunkharaa (48°59'N, 106°55'E) , 1399 m a.s.l., 05 VIII 2015, 3♂♂, on Apiaceae , leg. LK.

Remarks.

Stictoleptura variicornis is distributed from eastern Europe to the Pacific Ocean coast including Japan ( Danilevsky 2017a). This species, which is rare in Europe, reaches the Białowieża Forest in Poland ( Gutowski 1995), where it is strictly protected by European law. It inhabits dead thick-trunked trees and the stumps of various coniferous and deciduous species. The larva initially lives under the bark and then in the wood, where it usually makes a pupal cell after its second hibernation. The flight period of this beetle occurs between the second half of June to mid-August ( Cherepanov 1990a). It is a common species in the Mongolian taiga. It was also recorded from Bulgan Aimag by Heyrovský (1973a).

Although the specimens were observed on the flowers of a few plant species, they seemed to prefer Filipendula palmata (Fig. 6C ).

Figures

Figure 1. Photos of longhorn beetles specimens collected during the expedition to Mongolia in 2015: A Gaurotes virginea aemula (female) B Stictoleptura variicornis (male) C S. variicornis (female) D Anastrangalia sequensi (male) E A. sequensi (male, melanistic form) F A. sequensi (female) G Pachyta lamed (male) H Lepturalia nigripes rufipennis (male) I Pachytodes longipes (female).

Figure 6. Field photos of imagines in nature, immature stages and habitats of typical Mongolian cerambycid species: A spruces, firs and birches in dark taiga, the habitat of Pachyta lamed, P. quadrimaculata and Lepturobosca virens B site with fireweed Chamaenerion angustifolium in dark taiga, the habitat of several anthopilous species e. g., Gaurotes virginea aemula, Stictoleptura variicornis C male of S. variicornis on Filipendula palmata D males of Anastrangalia sequensi on Seseli condensatum E larches in forest steppe, the habitat of A. sequensi F riverbank in light taiga, the habitat of Pachytodes longipes G larva of Oedecnema gebleri in larch wood H burned larches in forest steppe, the habitat of O. gebleri and A. sequensi.