Popillia biguttata (Wiedemann in Wiedemann & Germar, 1821) (Coleoptera Scarabaeidae: Rutelinae) established on New Guinea? With an illustrated key to Sundaland Popillia Dejean species Telnov, Dmitry Zorn, Carsten Zootaxa 2019 2019-10-10 4683 4 577 588 (Wiedemann in Wiedemann & Germar, 1821) in Cyclops Mountains 1821 Wiedemann in Wiedemann & Germar 1821 [151,939,1585,1612] Insecta Rutelidae Popillia Animalia Coleoptera 0 577 Arthropoda species biguttata  ( Figs. 1–5)   Material examined:  IndonesiaE, North New  Guinea, Sentani Nenv., foothills of Cyclops Mts., 2°32’49”S, 40°30’45”E,  03.IV.2014, forest edge, leg. D.Telnov( 3♂ DTC). In April 2018,  Popillia biguttatawas observed in northern New Guinea, around Sentani, in the foothills of the Cyclops Mountains. Three specimens were found feeding on the flowers of  Catharanthus roseus(L.) G. Don ( Apocynaceae), commonly known as Madagascarperiwinkle or rose periwinkle, non-native but widespread in eastern Indonesia. This flowering plant is not uncommon in urban and village gardens in Indonesian New Guinea, as observed by the first author. In the foothills of the Cyclops Mountains, at the edge of Kota Sentani not far from the World Wildlife Fund office at the end of an asphalt road, where gardens merge with natural rainforest vegetation ( Fig. 6), a group of flowering  C. roseusin the shade of young trees was inspected for Coleoptera. Considering the fact that  C. roseusis poisonous to many organisms ( Plaizier 1981; Barrales-Cureño et al.2019), it was quite surprising to find Rutelinaebeetles on these flowers. According to Miyajima (2004),  C. roseusis pollinated by foraging insects. However, due to peculiarities of the flower structure, only butterflies and moths with a long proboscis can reach the anthers and stigmas of  C. roseusflowers ( Miyajima 2004). The three observed specimens of  P. biguttatawere positioned on nearby  C. rosaceusflowers, apparently digging into them but with their bodies still half-exposed and visible from above.   FIGURES 1–5.  Popillia biguttata(Wiedemann in Wiedemann & Germar, 1821), ♂. 1: habitus, lateral view; 2: habitus, dorsal view; 3: aedeagus, dorsal view; 4: aedeagus, ventral view; 5: aedeagus, lateral view. Not reproduced to the same scale. Considering the fact that three specimens were observed, and not in a garden area but in an intermixing zone with natural vegetation, we assume  P. biguttatais successfully established in New Guinea. Studied Papuan specimens were compared with specimens from Java(see localities in the Checklist below). 2425474238 [403,690,1693,1720] Indonesia North New 0 577 1 2425474234 2014-04-03 DTC Sentani N & D. Telnov Guinea-Bissau -2.5469444 Cyclops Mts. 21 40.5125 0 577 3 3