FOUR NEW SPECIES OF PACHYRHYNCHINI FROM SOUTHERN LUZON, PHILIPPINES (COLEOPTERA, CURCULIONIDAE, ENTIMINAE)

Current issue: Volume 24, No. 2 (2024) FOUR NEW SPECIES OF PACHYRHYNCHINI FROM SOUTHERN LUZON, PHILIPPINES (COLEOPTERA, CURCULIONIDAE, ENTIMINAE) Anita Rukmane-Bārbale* DOI: https://doi.org/10.59893/abud.24(2).018 Rukmane-Bārbale A. 2024. Four new species of Pachyrhynchini from Southern Luzon, Philippines (Coleoptera, Curculionidae, Entiminae). Acta Biol. Univ. Daugavp., 2024(2): 349-358. Abstract Four new species of the tribe Pachyrhynchini, genera Pachyrhynchus Germar, 1824 and Metapocyrtus Heller, 1912 has been described and illustrated from Gabaldon and Quezon province, Southern Luzon Island: Pachyrhynchus pseudorukmaneae sp. nov., Pachyrhynchus chrysocyaneus sp. nov., Metapocyrtus pseudojaysoni sp. nov. and Metapocyrtus biflavus sp. nov. A diagnosis of each taxon is provided. Habitus photo­graphs and illustrations of male genitalia for these taxa are also included. The similarities in body pattern among Pachyrhynchus and Metapocyrtus species inhabiting Quezon and Marinduque suggest an evolutionary dispersal pathway from the Sierra Madre through Quezon to Marinduque, highlighting biogeographic and adaptive links within this beetle lineage. Keywords: Coleoptera, Pachyrhynchus, Metapocyrtus, taxonomy, Philippines, Quezon. *Corresponding author: Anita Rukmane-Bārbale. Daugavpils University, Institute of Life Sciences and Technology, Coleopterological Research Center, Vienības Str. 13, LV-5401, Daugavpils, Latvia. E-mail: [email protected] Rukmane-Bārbale A. Four new species of Pachyrhynchini from Southern Luzon, Philippines (Coleoptera, Curculionidae, Entiminae)Download