Rhoptrocentrus piceus Marshall, 1897

Cao, Liang-Ming, Achterberg, Cornelis Van, Tang, Yan-Long, Wang, Xiao-Yi & Yang, Zhong- Qi, 2020, Revision of parasitoids of Massicus raddei (Blessig & Solsky) (Coleoptera Cerambycidae) in China, with one new species and genus, Zootaxa 4881 (1), pp. 104-130 : 126

12. Rhoptrocentrus piceus Marshall, 1897

Rhoptrocentrus piceus Marshall, 1897: 99 ; Shenefelt & Marsh, 1976: 1330; Yu et al, 2016.

Rhoptrocentrus quercusi Cao et al., 2015: 470 ; Yu et al., 2018; Belokobylskij, 2019: 36 (as synonym of R. piceus Marshall, 1897 ).

Material examined. 2♀♀ 2♂♂, China, Liaoning Province, Kuandian County, Daxicha Forest , 1.VI.2009, 40°44′58″N, 125°11′35″E, 446 m altitude, emerged 8.VI.2009 from collected cocoons, Yang Zhong-Qi & Tang Yan-Long leg.

Hosts. Parasitoid of Cerambycidae ( Massicus raddei , Acanthocinus griseus (Fabricius) , Chlorophorus pilosus (Forster) , Hylotrupes bajulus (L.), Penichroa fasciata Stephens , Psacothea hilaris (Pascoe) , Stromatium fulvum Villers ); Buprestidae ( Anthaxia corynthia Obenberger , Buprestis haemorrhoidalis araratica Marseul ); Tortricidae ( Eupoecilia ambiguella (Hübner)) ; Anobiidae ( Gastrallus corsicus Schilsky ); Bostrichidae ( Heterobostrychus brunneus (Murray) , Scobicia chevrieri Villa & Villa ); Scolytidae ( Hylastes destruens (Wollaston) , Hypothenemus eruditus Westwood , Phloeotribus scarabaeoides (Bernard)) ; Curculionidae ( Pissodes notatus (F.)); Xiphydriidae ( Xiphydria camelus (L.)).

Distribution. China (Liaoning), Armenia, Austria, Bulgaria, Czechoslovakia, Germany, Greece, Hungary, Iran, Israel, Italy, Japan, Mexico, Moldova, Poland, Russia, Spain, Sweden, Turkey, Turkmenistan, USA, Ukraine, Vietnam, Yugoslavia.

Remarks. Body length ♀ / ♂ 3.3/ 2.3–2.4 mm. For detailed redescription and figures see Cao et al. (2015). Until now, only one cocoon mass was found besides a host mummy in a borer’s gallery. Seven cocoons in this mass were collected and four adults successfully emerged.