A new species of Pachydema Laporte (Coleoptera: Scarabaeoidea: Scarabaeidae: Melolonthinae: Pachydemini) from the Canary Islands Author Micó, Estefanía Author Galante, Eduardo text Zootaxa 2009 2284 41 47 journal article 10.5281/zenodo.191235 8b2da9f6-b81d-4b48-8d0d-105e01ff3b0e 1175-5326 191235 Key to the males of Pachydema species of the Canary Islands All species of Canarian Pachydema are included in the key with the exception of P. integra (Wollaston) , which was described using a single female. The species distribution (modified from Lacroix 2000 ) is shown in brackets. Locality records in bold have not been verified by us. 1. Prementum convex ( Fig. 11 a). Maxillary teeth reduced, with setae or spine-like setae at apex ( Fig. 12 a). .............. 2 - Prementum showing a deep concave area at apical third ( Figs. 11 b–c). Maxillary teeth well developed ( Fig. 12 b).. ..................................................................................................................................................................................... 6 2. Antennal club more than twice as long the preceding 4 antennomeres combined ( Fig. 13 a). Genae protruding beyond canthus ( Fig. 14 a). ......................................................................................................................................... 3 - Antennal club less than 1.5 times the preceding 4 antennomeres combined ( Fig. 13 b). Genae not protruding beyond canthus (14b). [La Gomera]. ..................................................................................................... P. oromii López-Colón 3. Genae sharply angled and protruding beyond canthus ( Fig. 14 a). Parameres as in Fig. 16 a. [Tenerife, La Gomera , Fuerteventura ]. ............................................................................................................................... P. obscura (Brullé) - Genae rounded and slightly protruding beyond canthus. ............................................................................................ 3 4. Second protarsomere not widened (1.8 times longer than wide) Parameres as in Fig. 16 b. [Tenerife]. ....................... ................................................................................................................................. P. tinerfensis Galante & Stebnicka - Second protarsomere slightly widened (1.3 times longer than wide). ......................................................................... 5 5. Elytra conspicuously convex and slightly punctate. Anterior border of clypeus emarginate. Parameres as in Fig. 16 c. [Tenerife]. ................................................................................................................................. P. fortunatorum Baraud - Elytra less convex. Anterior border of clypeus very slightly emarginate. Parameres as in Fig. 16 d. [Tenerife]. ......... ............................................................................................................................................................ P. jeannei Baraud 6. Scutellum with punctures at disc. Metatibia internal border not dilated at middle ( Fig. 17 a). Parameres forcep shaped (narrow and sinuate, as in Figs. 16 e–h). ...................................................................................................................... 7 - Scutellum without punctures at disc. Metatibia internal border dilated at middle. Parameres not sinuate or arrow shaped (as in Figs. 16 i–n). ......................................................................................................................................... 10 7. Eyes large and laterally exposed. Front between eyes nearly twice as wide as eye diameter ( Fig. 14 c). [Tenerife, La Gomera]. ....................................................................................................................................... P. castanea (Brullé) - Eyes small and not laterally exposed. Front between eyes more than three times as wide as eye diameter. .............. 8 8. Apical maxillary palpomere narrowly oval ( Fig. 15 a). Parameres as in Fig. 16 f. [ Gran Canaria , Tenerife, La Palma, Fuerteventura , La Gomera ]. .................................................................................................. P. fuscipennis ( Brullé) - Apical maxillary palpomere largely oval as in Fig. 15 b. ............................................................................................. 9 9. Frons and pronotum densely punctate. Parameres as in Fig. 16 g. [El Hierro, La Palma ]. ... P. obscurella (Wollaston) - Frons and pronotum less densely punctate. Parameres as in Fig. 16 h. [La Gomera]. ........... P. gomerae López-Colón 10. Eyes large and laterally exposed. Front between eyes nearly twice as wide as eye diameter. .................................. 11 - Eyes small and not laterally exposed. Front between eyes more than three times as wide as eye diameter. .......... 12 11. Apical maxillary palpomere large (ratio palpomere length/habitus length: 0.03) and widened (length 2.2 times the width). Third and fourth antennomeres short and wide (1.7 times longer than wide) ( Fig. 2 ). Parameres slightly arrow shaped ( Fig. 10 ). [Gran Canaria]. .............................................................................. P. megalops Micó sp. nov. - Apical maxillary palpomere small (ratio palpomere length/habitus length: 0.01) and narrow (length 3.5 times the width). Third and fourth antennomeres long and narrow (3 times longer than wide) ( Fig. 13 c). Parameres strongly arrow shaped ( Fig. 16 i). [Gran Canaria]. ..................................................................................... P. lesnei Peyerimhoff 12. Second protarsomere strongly widened (almost as long as wide). Prementum widely notched and with the concave area very reduced ( Fig. 11 c). Parameres as in Fig. 16 j. [Gran Canaria]. ............................................. P. keithi Lacroix - Second protarsomere moderately widened (always longer than wide). Prementum shortly notched, with a wide concave area in the apical third as in Fig. 12 b. ................................................................................................................ 13 13. Apical maxillary palpomere narrowly oval ( Fig. 15 e). Parameres as in Fig. 16 k. [Lanzarote, Fuerteventura]. ........... ........................................................................................................................................................... P. m e n i e r i Baraud - Apical maxillary palpomere largely oval (Figs. f–h). ................................................................................................ 14 14. Parameres slightly arrow shaped ( Fig.16 l). Scutellum bordered by more or less deeply impressed groove. [ El Hierro , Gran Canaria , Tenerife, La Gomera]. ........................................................................... P. bipartita (Brullé) - Parameres elongated. Scutellum without marginal groove or only present minimally at the base. .......................... 15 15. Pronotum with fine, sparse punctures. Parameres as in Fig. 16 n. [Gran Canaria, Lanzarote]. ..... P. navatteae Baraud - Pronotal punctures moderate to coarse, densely distributed. Parameres as in Fig. 16 m. [Fuerteventura]. ................... ............................................................................................................................................... P. wollastoni Peyerimhoff