Rhoptrocentrus piceus Marshall, 1897

12. Rhoptrocentrus piceus Marshall, 1897 View in CoL

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

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

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. GoogleMaps

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.