Eupines (Byraxis) lewisi Broun, 1910

Shen, Jia-Wei & Leschen, Richard A. B., 2020, Revision of Eupines King of New Zealand (Coleoptera: Staphylinidae: Pselaphinae: Goniaceritae), Zootaxa 4777 (1), pp. 1-84 : 46-47

publication ID	https://doi.org/10.11646/zootaxa.4777.1.1
publication LSID	lsid:zoobank.org:pub:BF4149EF-478F-4FE4-BE7B-B497272F99C0
DOI	https://doi.org/10.5281/zenodo.3844486
persistent identifier	https://treatment.plazi.org/id/C0438794-D86F-FF81-FF01-7530FB9DF81B
treatment provided by	Plazi (2020-05-12 07:08:52, last updated 2024-11-26 01:16:19)
scientific name	Eupines (Byraxis) lewisi Broun, 1910
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Treatment

Eupines (Byraxis) lewisi Broun, 1910 View in CoL

Fig. 29 View FIGURE 29 ; map Fig. 52 View FIGURE 52

Eupines lewisi Broun, 1910: 24 View in CoL . Raffray 1911: 83, 1924: 157; Hudson 1923: 364 and 367, 1934: 183 and 185.

Eupines (Byraxis) lewisi View in CoL : subgeneric assignment by Nomura and Leschen 2006: 255. Maddison 2010: 417; Shen and Leschen 2019: 268 View Cited Treatment .

Type locality: [ MC] Broken River , Canterbury .

Type depository: BMNH HT ♂

Diagnosis: Head with vertexal foveae punctiform; antennae 10-segmented with 2-segmented antennal club; A4, A6, A7, A8 and A10 unmodified, A5 large and asymmetrical, bean-shaped, lateral margin laminate and curved, forming bowl-shaped excavation, A7 asymmetrical, A8 disc-shaped, A9 large and asymmetrical, slightly shorter than A10, inner side strongly excavated in dorsal view, with upper margin laminate and extended, forming gulfshaped structure, A10 largest and conical, about 1.2 × longer than A9. Abdominal ventrite 2 with pair of large discal protuberances slightly curving towards each other, inserted with strongly curved small apical setae; ventrite 6 with pair of short and acute median struts, about one-fourth of ventral length. Legs with protrochanters modified with small ventral spine, about one-third of protrochanteral width; protibiae and mesotibiae unmodified. Protrochanters with small ventral spine, about one-third of protrochanteral width; protibiae and mesotibiae unmodified.

Redescription: Body length 1.58–1.60 mm; body colour dark brown with lighter coloured legs. Head about as long as wide, frons slightly narrowed at end, about half width of head at eye level; eyes moderately developed, with about 29 facets; vertexal foveae punctiform; antennal tubercles weak; lacking postantennal notches; postantennal cavities medium-sized, about half length of antennal tubercles in dorsal view; antennae 10-segmented with 2-segmented antennal club; A4, A6, A7, A8 and A10 unmodified, A5 large and asymmetrical, bean-shaped, lateral margin laminate and curved, forming bowl-shaped excavation, A7 asymmetrical, A8 disc-shaped, A9 large and asymmetrical, slightly shorter than A10, inner side strongly excavated in dorsal view, with upper margin laminate and extended, forming gulf-shaped structure, A10 largest and conical, about 1.2 × longer than A9. Pronotum about as long as wide, wider than head at eye level; lacking lateral antebasal foveae. Elytra as long as wide, widest at apical two-thirds; humeral calli distinctively prominent; sutural stria distinctively extending from base to apex. Abdomen with tergite 1 about 1.8 × longer than tergite 2; ventrite 2 with pair of large discal protuberances slightly curving towards each other, inserted with strongly curved small apical setae; ventrite 6 with pair of short and acute median struts, about one-fourth of ventral length. Legs with protrochanters modified with small ventral spine, about one-third of protrochanteral width; protibiae and mesotibiae unmodified. Aedeagus about 0.32 mm long, with sinuate parameres long and stout, widest near basal one-fourth, apex strongly bent downwards and twisted in lateral view, with three short apical setae; median lobe with two short sclerites, much shorter and narrower than parameres in dorsal view, left one distinctively curved outwards, right one point inwards.

Comments: The special antennal modifications ( Figs. 29 View FIGURE 29 B–D) can easily separate this species from all congeners.

Distribution: North Island. BP. South Island. NN, MC.

Additional material examined: 5 ♂♂, BP : 2, BMNH, 3052. ♂, Rotoiti , 10/3/16, New Zealand, Broun Col- lection. Brit. Mus., 1922–482; NN: 2, FMNH , Nelson Lakes N.P., N. slope Mt. Robert, Pinchgut Track , 950 m, 14/ XII/84–6/I/85, Nothofagus spp. forest, A. Newton /M. Thayer, 707, flight intercept (window) trap; MC: 1, BMNH , 3052, ♂, Rakaia , 9/8/1912, New Zealand, Broun Collection. Brit. Mus., 1922–482 .

References

Broun, T. (1910) Descriptions of new genera and species of Coleoptera. Bulletin of the New Zealand Institute Wellington, 1, 1 - 78.

Hudson, G. V. (1923) An index to New Zealand beetles. Transactions of the New Zealand Institute, 54, 353 - 399.

Maddison, P. (2010) Checklist of New Zealand Hexapoda. Order Coleoptera. Chapter Nine: Phylum Arthropoda: Subphylum Hexapoda: Protura, springtails, Diplura, and insects. In: Gordon, D. P. (Ed.), New Zealand inventory of biodiversity. Vol. 2. Kingdom Animalia: Chaetognatha, Ecdysozoa, Ichnofossils. Canterbury University Press, Christchurch, pp. 233 - 467.

Nomura, S. & Leschen, R. A. B. (2006) Faunistic review on the pselaphine species known from New Zealand (Insecta, Coleoptera, Staphylinidae). National Science Museum Monographs, 34, 239 - 272.

Raffray, A. (1911) Pselaphidae. In: Schenkling, S. (Ed.), Coleopterorum Catalogus. Pars 27. W. Junk, Berlin, pp. 1 - 222. https: // doi. org / 10.1007 / 978 - 94 - 011 - 9697 - 0 _ 1

Raffray, A. (1924) Etude sur la distribution geographique des Coleo-pteres de la famille des Pselaphides. Memorie della Pontificia Accademia Romana dei Nuovi Lincei, 2 (7), 1 - 158.

Shen, J. - W. & Leschen, R. A. B. (2019) Catalogue and type designations for New Zealand Goniaceritae (Coleoptera: Staphylinidae: Pselaphinae). Zootaxa, 4614 (2), 255 - 302. https: // doi. org / 10.11646 / zootaxa. 4614.2.2

Figures

FIGURE 29. Diagnostic characters of E. (B.) lewisi Broun, 1910. A) Habitus. B) Antenna, in dorsal view. C) Same, in lateral view. D) Same, in ventral view. E) Protrochanter. F) Ventrite 2. G) Ventrite 6. H) Aedeagus, in dorsal view. I) Same, in lateral view. J) Same, in ventral view. Scale bars: A = 1 mm, B–F = 0.2 mm, G–J = 0.1 mm.

FIGURE 52. Geographic distributions of E. (B.) impar (Sharp, 1874), E. (B.) impressifrons (Broun, 1880), E. (B.) insolita sp. n., E. (B.) lewisi Broun, 1910, E. (B.) longiceps Raffray, 1904, E. (B.) mayae sp. n., and E. (B.) micans (Sharp, 1874) in New Zealand.