Eupines (Byraxis) platyarthra (Broun, 1893)

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 : 66-67

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.3844518

persistent identifier

https://treatment.plazi.org/id/C0438794-D803-FFED-FF01-73CBFD94F9AC

treatment provided by

Plazi

scientific name

Eupines (Byraxis) platyarthra (Broun, 1893)
status

 

Eupines (Byraxis) platyarthra (Broun, 1893) View in CoL

Fig. 43 View FIGURE 43 ; map Fig. 54 View FIGURE 54

Bryaxis clavatus Broun, 1880: 126 View in CoL .

Bryaxis platyarthra Broun, 1893a: 1417 . New name for Bryaxis clavatus Broun, 1880: 126 View in CoL , preoccupied by Bryaxis clavata Motschulsky, 1851: 49 View in CoL .

Eupines (Byraxis) platyarthra View in CoL : combination and subgeneric assignment by Raffray 1904: 207. Schaufuss 1888: 22; Raffray 1911: 82, 1924: 156; Hudson 1923: 364, 1934: 182; Nomura and Leschen 2006: 255; Maddison 2010: 417; Shen and Leschen 2019: 272 View Cited Treatment .

Type locality: [CL] Tairua.

Type depository: BMNH LT ♂ ; NZAC 1 About NZAC PLT .

Diagnosis: Head with vertexal foveae punctiform; antennae 10-segmented with 2-segmented antennal club; A4, A5, A6, A7 and A8 unmodified, A9 largest and strongly transverse, with deep lateral impression and laminate margin at inner side, A10 conical and slightly shorter than A9, lateral side broadly impressed. Abdominal ventrite 2 with pair of minute discal protuberances, inserted with small strongly curved apical setae; ventrite 6 with pair of long median struts, about as long as ventral length. Protrochanters modified with medium-sized ventral spine, about half of protrochanteral width; protibiae and mesotibiae unmodified.

Redescription: Body length 1.60 mm; body colour reddish brown with lighter coloured tibiae and tarsi. Head wider than long; frons not narrowed at end, about three-fourths width of head at eye level; eyes slightly prominent, with about 29 facets; vertexal foveae punctiform; antennal tubercles weak; postantennal notches weak; postantennal cavities small, about half width of antennal tubercles in dorsal view; antennae 10-segmented with 2-segmented antennal club; A4, A5, A6, A7 and A8 unmodified, A9 largest and strongly transverse, with deep lateral impression and laminate margin at inner side, A10 conical and slightly shorter than A9, lateral side broadly impressed. Pronotum slightly longer than wide, about as wide as head at eye level; lacking lateral antebasal foveae. Elytra slightly longer than wide, widest at apical two-thirds; humeral calli slightly prominent; sutural stria shallowly extending from base to apex. Abdomen with tergite 1 about 1.5 × longer than tergite 2; ventrite 2 with pair of minute discal protuberances, inserted with small strongly curved apical setae; ventrite 6 with pair of long median struts, about as long as ventral length. Legs with protrochanters modified with medium-sized ventral spine, about half of protrochanteral width; protibiae and mesotibiae unmodified. Aedeagus about 0.29 mm long, with elongate parameres slightly sinuate, longer than median lobe and basal bulb combined, slightly curved downwards at apex in lateral view, with two pairs of stout subapical setae at inner side, pair of slender subapical setae at outer side and pair of short apical setae; median lobe with two sclerites highly twisted, slightly asymmetrical, gradually narrowed towards apex, both curved inwards at apex.

Comments: This species can be distinguished from all other Eupines by A9 strongly transverse ( Figs. 43 View FIGURE 43 B–D). Distribution: North Island. CL.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Eupines

Loc

Eupines (Byraxis) platyarthra (Broun, 1893)

Shen, Jia-Wei & Leschen, Richard A. B. 2020
2020
Loc

Eupines (Byraxis) platyarthra

Shen, J. - W. & Leschen, R. A. B. 2019: 272
Maddison, P. 2010: 417
Nomura, S. & Leschen, R. A. B. 2006: 255
Hudson, G. V. 1934: 182
Raffray, A. 1924: 156
Hudson, G. V. 1923: 364
Raffray, A. 1911: 82
Raffray, A. 1904: 207
Schaufuss, C. 1888: 22
1904
Loc

Bryaxis platyarthra

Broun, T. 1893: 1417
Broun, T. 1880: 126
Motschulsky, V. 1851: 49
1893
Loc

Bryaxis clavatus

Broun, T. 1880: 126
1880
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