Eupines (Byraxis) dugdalei Shen & Leschen 2020, sp. nov.
Creators: name: Shen, Jia-Wei
name: Leschen, Richard A. B.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Eupines
Eupines dugdalei

description: Eupines (Byraxis) dugdalei sp. nov.
Fig.16; map Fig. 50
Diagnosis: Head lacking vertexal foveae; antennae 10-segmented with 2-segmented antennal club; A4, A6, A7, A8 and A10 unmodified, A5 conspicuously enlarged, more than twice length of A4, A9 asymmetrical and largest, about 1.5 × longer than A10, base strongly narrowed, widest at middle, A10 conical. Abdominal ventrite 2 with pair of large discal protuberances, inserted with strongly curved small apical setae; ventrite 6 with pair of slender median struts, about three-fifths of ventral length. Protrochanters with long and acute ventral spine, about two-thirds of protrochanteral width; protibiae with large apical protuberance; mesotibiae unmodified.
Description: Body length 1.45–1.55 mm; body colour dark brown to black with lighter coloured tarsi. Head wider than long; frons slightly narrowed at end, about half width of head at eye level; eyes moderately developed, with about 24 facets; lacking vertexal foveae; antennal tubercles barely visible; lacking postantennal notches; postantennal cavities large, about 1.3 × length of antennal tubercles in dorsal view; antennae 10-segmented with 2-segmented antennal club; A4, A6, A7, A8 and A10 unmodified, A5 conspicuously enlarged, more than twice length of A4, A9 asymmetrical and largest, about 1.5 × longer than A10, base strongly narrowed, widest at middle, A10 conical. Pronotum slightly wider than long, wider than head at eye level; lacking lateral antebasal foveae. Elytra slightly longer than wide, widest at apical three-fifths; humeral calli barely visible; sutural stria shallowly extending from base to apex. Abdomen with tergite 1 about as long as tergite 2; ventrite 2 with pair of large discal protuberances, inserted with strongly curved small apical setae; ventrite 6 with pair of slender median struts, about threefifths of ventral length. Legs with protrochanters modified with long and acute ventral spine, about two-thirds of protrochanteral width; protibiae with large apical protuberance; mesotibiae unmodified. Aedeagus about 0.33 mm long, with long and large parameres, widest near apex, bent downwards in lateral view, with pair of subapical setae; median lobe with two small sclerites curved towards each other at apex, much smaller than parameres.
Comments: This species is similar to E. (B.) impar by having A9 enlarged but can be separated by its modified protibiae (Fig. 16E) (it is unmodified in E. (B.) impar).
Distribution: South Island. OL, FD, SL.
Etymology: This species is named after the collector of the holotype, John Dugdale.
Type material (NZAC): Holotype. ♂, specimen entire, point-mounted: “ NEW ZEALAND, OL, Headlong Pk., 1524 m, South Basin, 20 Feb 1980, J.S. Dugdale // Litter 80/26”. Paratypes. 11 ex.: OL: 5, same data as holotype; FD: 1, Middle Basin, Tutoko Bench, Darran Mts. 13/Jan/1977 // J.S. Dugdale; 1, Middle Basin, Tutoko Bench, Darran Mts., 1524 m // 14/Jan/1977, J.S. Dugdale; 1, Secretary I., Mt. Grono, 29/May/1982, T. Haslam // Mat plants 82/67; SL: 3, 1 km S. Longwood Trig, 700 m, Longwood Ra., 01/Feb/1976 // L.L. Deitz Mats, 76/12.
description: Published as part of Shen, Jia-Wei & Leschen, Richard A. B., 2020, Revision of Eupines King of New Zealand (Coleoptera: Staphylinidae: Pselaphinae: Goniaceritae), pp. 1-84 in Zootaxa 4777 (1) on pages 27-29, DOI: 10.11646/zootaxa.4777.1.1, http://zenodo.org/record/3821174