Anthaxia (Melanthaxia) oregonensis Obenberger, 1942

Bílý, Svatopluk & Kubáň, Vítězslav, 2010, A study on the Nearctic species of the genus Anthaxia (Coleoptera: Buprestidae: Buprestinae: Anthaxiini). Subgenus Melanthaxia. Part I, Acta Entomologica Musei Nationalis Pragae 50 (2), pp. 535-546 : 540-541

Anthaxia (Melanthaxia) oregonensis Obenberger, 1942 species-group

( Figs. 5 , 9 , 19, 27 )

Diagnosis. Small (3.7–4.8 mm), subparallel, rather lustrous, flat, black species; frons flat, slightly widely grooved at anterior half with short, white pubescence; vertex 1.8 times as wide as width of eye; pronotum twice as wide as long with wide, shallow lateroposterior depressions; pronotal sculpture homogenous, consisting of large polygonal cells without central grains; elytra twice as long as wide, regularly granulate with distinct, recumbent, dark pubescence; posterior third of elytral margins and lateral margins of anal ventrite without distinct serration; male meso- and metatrochanters with sharp spine on posterior margin; male mesotibiae with several sharp, apical teeth on inner margin, male metatibiae flattened and widened at apical fourth with several small, sharp preapical teeth ( Fig. 9 ); aedeagus rather robust, nearly subparallel ( Fig. 5 ). This group is further well-defined due to the white frontal pubescence, flat pronotum with wide lateroposterior depressions and the quite characteristic form of male meso- and metatibiae.

Species included. Anthaxia (M.) hurdi Cobos, 1958 , A. (M.) oregonensis Obenberger, 1942 .

Figures

Figs. 1–5. Male genitalia. 1 – Anthaxia (Melanthaxia) neofunerula Obenberger, 1942, holotype, New Hampshire, Charlestown (NMPC); 2 – A. (M.) nanula Casey, 1884, California, Palomar Mts (NMPC).; 3 – A. (M.) prasina Horn, 1882, California, Shingletown (); 4 – A. (M.) leechi Cobos, 1958, holotype, Califormia, Riverside (California Academy of Sciences, San Francisco); 5 – A. (M.) oregonensis Obenberger, 1942, syntype, Oregon, Aspen Lake (NMPC).

Figs. 6–14. 6–8 – Male genitalia: 6 – Anthaxia (Melanthaxia) strigata LeConte, 1859, California, Mt. Diabolo (NMPC); 7 – A. (M.) californica Obenberger, 1914, California, San Diego (NMPC); 8 – A. (M.) aeneogaster Gory & Laporte, 1839, syntype, California (Museum national d’Histoire naturelle, Paris). 9–11 – male left metatibiae: 9 – A. (M.) oregonensis Obenberger, 1942, syntype, Oregon, Aspen Lake (NMPC); 10 – A. (M.) strigata, California, Mt. Diabolo (NMPC); 11 – A. (M.) aeneogaster, syntype, California (Museum national d’Histoire naturelle, Paris). 12–14 – male metatrochanters: 12 – A. (M.) aeneogaster, syntype, California (Museum national d’Histoire naturelle, Paris); 13– A. (M.) prasina Horn, 1882, California, Shingletown (NMPC); 14 – A. (M.) strigata, California, Mt. Diabolo (NMPC).

Figs. 23–30. Pronotal sculpture. 23 – Anthaxia (Melanthaxia) neofunerula Obenberger, 1942, holotype, New Hamp-shire, Charlestown; 24 – A. (M.) nanula Casey, 1884, California, Palomar Mts.; 25 – A. (M.) prasina Horn, 1882, California, Shingletown; 26 – A. (M.) leechi Cobos, 1958, California, near Hemet; 27 – A. (M.) oregonensis Obenberger, 1942, California, Riverside; 28 – A. (M.) strigata LeConte, 1859, California, E of Stockton; 29 – A. (M.) californica Obenberger, 1914, California, Palomar Mts.; 30 – A. (M.) aeneogaster Gory & Laporte, 1839, California, Mukelumne River.