Published May 17, 2019 | Version v1
Taxonomic treatment Open

Pheropsophus bimaculatus

Description

Pheropsophus bimaculatus (LINNAEUS, 1771)

(Fig. 1 C, 5 C)

Ssp. Pheropsophus bimaculatus posticalis ARROW, 1901 Carabus bimaculatus Linnaeus, 1771: 532; Fabricius, 1775: 243; Olivier, 1795: 65; Dejean, 1821: 3; 1825: 299; Hope, 1838:

100; Motschulsky, 1855: 55; Redtenbacher, 1844: 5; Chaudoir, 1876: 34; Bates, 1886: 200; Andrewes, 1919: 120; 1921a:

153; 1923(1924b): 460; 1930: 271. Ssp. Pheropsophus bimaculatus posticalis Arrow, 1901: 204; Andrewes, 1919: 198; 1930: 271.

Specimens examined (n=51): Holotype, labelled “ bimaculatus ”, type in LSUK

Other specimens examined: 43 exs., India: Kerala: Nilambur, 28.II.2016, Hand picking (under stones), coll. S.V. Akhil; 3 exs., India: Kerala: Palakkad, 26.XI.2017, Hand picking (paddy field), coll. M. Divya; 4 exs., India: Tamil Nadu: Coimbatore.

Description. Length: 15.8–17.5 mm; TW: 6.2–7.3 mm

Colour: Head yellow; pronotum disc and lateral margin brownish black, with a yellowish spot, oblong, more or less large, placed on each side along the lateral margin; elytra black with yellow spots; antennae, legs yellow; antennal segments 1–4 of lighter shade; underside of body blackish brown; eyes brownish.

Head: With a dark spot somewhat elongated towards the apex extending to the pronotum; two weak longitudinal impressions between the antennae; antennae about half the length of the body; eyes not protruding.

Pronotum: Subcordiform; contracted posteriorly; apical and basal margins straight; hind angles right angled, not protruding; median furrow distinct; a few scattered deep punctures on disc.

Elytra: Nearly twice as wide as pronotum; enlarged towards apex, straight truncated at apex; striations wide, rounded, intervals flat; humeral spot rounded; transverse band rounded with weakly serrated edges; apical yellow band narrow, extends anteriorly along each striation.

Geographical distribution. INDIA: Tamil Nadu: Anaimalai Hills, Kodaikanal, Thirunelveli, Chennai, Coimbatore, Ramanathapuram, Chengalpattu, Madurai, Thiruchirapalli (Andrewes 1930); Pondicherry (Andrewes 1930); Kerala: Travancore (Andrewes 1930), Nilambur (New record), Palakkad (New record); Karnataka: Mysore: Chikkabellapura (Andrewes 1930); Maharashtra: Pune (Andrewes 1930); SRI LANKA: Kitugalle (Bates 1886). Udagama (Andrewes 1930). Weligama (Andrewes 1930). Colombo (Andrewes 1930). Elephant pass (Andrewes 1930). Avisawella (Andrewes 1930).

Remarks. In the subspecies P. bimaculatus posticalis the elytral transverse band has united with the humeral spot and covers two-thirds of the elytra, the posterior third of elytra, the sutural line (expanded below the scutellum) and two vestiges below the humerus are black.

Notes

Published as part of Venugopal, Akhil S. & Thomas, Sabu K., 2019, Bombardier beetles of the genus Pheropsophus Solier 1833 (Carabidae: Brachininae: Brachinini) from Indian subcontinent, pp. 65-89 in Zootaxa 4608 (1) on pages 68-70, DOI: 10.11646/zootaxa.4608.1.3, http://zenodo.org/record/3993611

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Linked records

Additional details

Biodiversity

Event date
2016-02-28 , 2017-11-26
Verbatim event date
2016-02-28 , 2017-11-26
Scientific name authorship
Linnaeus
Kingdom
Animalia
Phylum
Arthropoda
Order
Coleoptera
Family
Carabidae
Genus
Pheropsophus
Species
bimaculatus
Taxon rank
species
Taxonomic concept label
Pheropsophus bimaculatus (Linnaeus, 1771) sec. Venugopal & Thomas, 2019

References

  • Linnaeus, C. von. (1771) Mantissa plantarum: Generum editionis VI. et specierum editionis II. Impensis Direct. Laurentii Salvii, Holmiae, 588 pp.
  • Arrow, G. J. (1901) The Carabid genus Pheropsophus: Notes and descriptions of new species. Transactions of the Entomological Society of London, 1901, 193 - 206.
  • Fabricius, J. C. (1775) Systema Entomologiae, sistens insectorum classes, ordines, genera, species, adiectis synonymis, locis, descriptionibus, observationibus. Officina Libraria Kortii, Flensburgi et Lipsiae (Flensburg and Leipzig), xxxii + 832 pp.
  • Olivier, G. A. (1795) Entomologie ou Histoire naturelle des insectes, avec leurs caracteres generiques et specifiques, leur description, leur synonymie et leur figure enluminee. Lanneau, Paris, 557 pp.
  • Hope, F. W. (1838) The Coleopterist's Manual, Part the Second, Containing The Predaceous Land And Water Beetles Linneus And Fabricius. Henry G. Bohn, York Street, Covent Garden, London, 168 pp.
  • Motschulsky, V. von (1855) Sur les collections Coleopterologiques de Linne et de Fabricius. Etudes Entomologiques, 4, 25 - 71.
  • Chaudoir, M. (1876) Monographie de Brachynides. Annales de la Societe entomologique de Belgique, 19, 11 - 104.
  • Bates, H. W. (1886) On the Geodephagous Coleoptera collected by George Lewis in Ceylon. The Annals and Magazine of Natural History including Zoology, Botany and Geology, 5 (17), 199 - 212. https: // doi. org / 10.1080 / 00222938609460134
  • Andrewes, H. E. (1919) On the types of Oriental Carabidae in the British Museum and in the Hope Department of the Oxford University Museum. Transactions of Entomological Society of London, 1919, 119 - 217. https: // doi. org / 10.1111 / j. 1365 - 2311.1919. tb 00006. x
  • Andrewes, H. E. (1921 a) Notes on Synonymy and on some types of Oriental Carabidae in various foreign collections. Transactions of the Entomological Society of London, 1921, 145 - 195. https: // doi. org / 10.1111 / j. 1365 - 2311.1921. tb 02805. x
  • Andrewes, H. E. (1930) Catalogue of Indian Insects. Part 18. Carabidae. Government of India Central Publication Branch, Calcutta, xxi + 389 pp.