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Species Attalus nigripes

Attalus nigripes Horn - Attalus nigripes Attalus nigripes Horn - Attalus nigripes Attalus nigripes Horn - Attalus nigripes Attalus nigripes Horn - Attalus nigripes Attalus nigripes Horn - Attalus nigripes Attalus nigripes? - Attalus nigripes Attalus nigripes? - Attalus nigripes Attalus nigripes? - Attalus nigripes
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 Cucujiformia)
Superfamily Cleroidea (Bark-gnawing, Checkered and Soft-winged Flower Beetles)
Family Melyridae (Soft-winged Flower Beetles)
Subfamily Malachiinae
Tribe Malachiini
Subtribe Attalina
Genus Attalus
Species nigripes (Attalus nigripes)
Explanation of Names
Attalus nigripes Horn, 1870
Size
2-2.5 mm (1)
Identification
2-2.5 mm, pubescence sparse; thorax rufous, with variable dark discal area (last couplet in: (1))
In his original description of this species, Horn (1870) states: "body beneath and legs black" and in his 1872 key he repeats: "legs entirely black." These statements are correct so far as concerns the females, but most of the males have the anterior two pairs of legs yellow, except for the tarsi and knees, and the last three abdominal segments yellow in part. The males show a modification of the fourth and fifth sternites which is quite distinctive and which has not been previously noted to my knowledge. The central third of the fourth segment is black and ends posteriorly in a roughened, elevated ridge that slightly overhangs the true posterior border of the segment. The remainder of the sternite is yellow, except for the anterior angles. The fifth segment presents a similar structure, but the ridge here does not reach the posterior edge of the segment, the black central area has a median carina and both ridge and posterior border of the segment have an acute median emargination. The terminal segment, both sternite and tergite, is larger and thicker than usual in the genus and the sternite is made up of two lateral mandibuliform lobes, with concave median edges, leaving an unusually large genital aperture. The fifth and sixth sternites, with the exception of the black median lobe of the fifth, are entirely yellow. (1)
Range
Great Plains to AZ (AZ-TX-SD-CO) / SON, Mex (1), (BG data)
Life Cycle
10 spmns coll'ed Apr-June in 2 yrs of c. TX arboreal surveys (2)
Remarks
Type Locality: Colorado
Print References
Horn, G.H. 1870. Contributions to the coleopterology of the United States. Transactions of the American Entomological Society, 3: 69-97. Full PDF
Horn, G.H. 1872. Synopsis of the Malachiidae of the United States. Transactions of the American Entomological Society. 4: 109-127.
Works Cited
1.Studies in Malachiidae, III.
Marshall, M.Y. 1951. Proceedings of the California Academy of Sciences, 27: 77-132.
2.Abundance and distribution of potential arthropod prey species in a typical Golden-cheeked Warbler habitat.
Quinn, M.A. 2000. Unpublished Thesis. Texas A&M University, College Station. ix + 182 pp.