Author Institution: Ohio University, Athens, Ohi

Stehr, William C.

The Ohio Journal of Science

KnowledgeBank at OSU

BRACHINUS ATBARAE N. SP. (COLEOPTERA, CARABIDAE)1WM. C. STEHR,Ohio University,Athens, OhioThis species is very similar to B. fumans (Fab.) in many respects and would key to thatspecies in the papers of Leconte, '62, Chaudoir, '68, and Blatchley, '10. The elytra are deepviolet blue and the rest of the body is reddish brown with the exception of the metepimera,metepisterna and outer sixth of the abdominal segments which are blackish. The clypeus ismuch more convex than in B. fumans and the frontal striae of the head are less deeply impressedand although somewhat rugose have only a few obsolete punctures in them. These punctures aremore numerous and much more distinct in B. fumans. The head is very smooth discally and thepunctures of the area posterior to the eyes are much weaker and less numerous than in B. fumans.The prothorax is slightly wider in proportion to the length (6 : 5) than in B. fumans (5.5 : 5),the sinuation before the hind angles is greater and the hind angles are more prominent. Thepunctures of the prothorax are much less distinct than in B. fumans, but the rugosity, medianline, and transverse impressions are very similar. The scutellum is finely rugose and is mediallysulcate on its posterior half, whereas in B. fumans this sclerite is finely rugose but is not sulcateThe costae of the elytra are less developed than in B. fumans, and the punctation is similar, butthe hairs are shorter and less conspicuous. The next to the last dorsal abdominal segment of themale of B. atbarae has a very short rather blunt carina which ends in a blunt denticle on themiddle of the posterior margin. There is no trace of this structure in the female and it is notpresent in either sex of B. fumans. Length: 11 to 12 mm.Holotype male: Atbara, B. C , Canada, 24-IV-'45, G. Stace Smith, Coll.Allotype female: Atbara, B. C , Canada, 7-V-'46, G. Stace Smith, Coll.Paratypes: Atbara, B. C, Canada: 1 female, 26-IX-44; 1 male, 27-IX-44; 1 male 20-VI-'46;1 female, 24-VI-'46; 2 males, 1 female, 5-VII-'46; 2 males, 3 females, 21-VII-'46; 1 male,20-IX-'46. All collected by G. Stace Smith.The Holotype, Allotype, and 5 paratypes are in possession of the author and 8 paratypes arein the collection of Mr. G. Stace Smith.The author is indebted to Mr. G. Stace Smith, of Creston, B. C , for the opportunity to studythis species. Mr. H. B. Leech had previously recognized the species as near B. fumans (Fab.).BIBLIOGRAPHYBlatchley, W. S. 1910. The Coleoptera of Indiana exclusive of the Rhyncophora. Bull. 1,Indiana Dept. of Geol. & Nat. Res., pp. 1-1386.Chaudoir, Baron M. de. 1868. Bembidiini, Pterostichini, Loxandrus, etc. Observationes surles Carabiques de l'Amerique du Nord. Rev. & Mag. Zool., Ser. 2, XX: 161-345.Fabricius, Johann C. 1781. Species Insectorum. Hamburg & Kilonii, 2 vols.LeConte, J. L. 1862. Notes on the Species of Brachinus. Proc. Acad. Nat. Sci. Phila. 1862:523-525.:Paper No. 43, Department of Zoology, Ohio University, Athens, Ohio.NEW MEMBERSMore than 150 Ohioans joined the Ohio Academy ofScience in the month of April. Of these, more than 50 werephysicians.Is your physician a member?102

Brachinus Atbarae N. Sp. (Coleoptera, Carabidae)

https://kb.osu.edu/bitstream/1811/3748/1/V50N03_102.pdf

Brachinus Atbarae N. Sp. (Coleoptera, Carabidae)

Abstract

Similar works

Full text

Available Versions

KnowledgeBank at OSU