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Species Melanophila atropurpurea

Melanophila atropurpurea (Say) - Melanophila atropurpurea Melanophila atropurpurea (Say) - Melanophila atropurpurea Melanophila atropurpurea - male Melanophila atropurpurea - male Beetle, dorsal - Melanophila atropurpurea Beetle, ventral - Melanophila atropurpurea Beetle, ventral close-up of left mesocoxa and infrared receptor - Melanophila atropurpurea Beetle, anterior - Melanophila atropurpurea
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Elateriformia)
Superfamily Buprestoidea (Metallic Wood Boring Beetles)
Family Buprestidae (Metallic Wood-boring Beetles)
Subfamily Buprestinae
Tribe Melanophilini
Genus Melanophila
Species atropurpurea (Melanophila atropurpurea)
Synonyms and other taxonomic changes
Melanophila atropurpurea (Say)
Orig. Comb: Buprestis atropurpurea Say 1823 (1)
Identification
From the original description of Say 1823 (1):
"Black, slightly tinged with bronze or purplish ; elytra serrate and mucronate.
Inhabits Arkansas.
Body punctured : antennae black : labrum piceous: thorax with elevated obtuse punctures and slightly impressed dilated ones each side; an indented spot on the middle of the basal margin : elytra scabrous with minute reflected and depressed points; lateral edge regularly serrated ; tip mucronate : beneath dark purplish.
Length less than three-tenths of an inch.
Taken near the Rocky Mountains. The colour to the eye is black, but upon attentive observation it will be perceived to be tinged with purplish."

The key entries which distinguish this species from M. Occidentalis from Cobos 1986 (2), as translated into English to the best of my abilities are:

18 (17) Anterior notch of the epistomal open arch shallow. Antennae more or less blue, including scape. Apical recess of the last ventrite shallow, forming simple acute angulations at the lateral limits.

19 (20) Dark tan-copper above, below generally more clearly so. Pronotum disk with underdeveloped microsculpture, widely smoothed and bright in the middle. Vivid elytral sculpture, tightly granule-punctuated, almost no place for microsculpture. Nearctic species ATROPURPUREA SAY
Range
w US (CA-TX-OK(?)-OR) / Mex. - Map (3)(4)
Food
larvae in Abies, Pinus, Pseudotsuga (3)
Remarks
Type locality: "Arkansa" (3), probably Arkansas Territtory which included most of present day Oklahoma when Say passed through as a member of the Long Expedition in 1920.
Works Cited
1.Descriptions of coleopterous insects ...
Thomas Say. 1823. J. Acad. Nat. Sci. Phila., Vol. III, Part 1, pp. 139-216.
2.Ensayo monográfico sobre las Melanophila Eschscholtz sensu lato (Coleoptera, Buprestidae)
Cobros, A. 1986. Eos : Revista Española de Entomología 62(1-4): 45-90.
3.A catalog and bibliography of the Buprestoidea of America north of Mexico.
Nelson et al. 2008. The Coleopterists Society, Special Publication No. 4. 274 pp.
4.Global Biodiversity Information Facility (GBIF)