Agnosthaetus zonatus Clarke, 2011

Clarke, Dave J., 2011, A Revision of the New Zealand Endemic Rove Beetle Genus Agnosthaetus Bernhauer (Coleoptera: Staphylinidae), The Coleopterists Bulletin (mo 10) 2011, pp. 1-118 : 40-42

(13) Agnosthaetus zonatus Clarke , new species

( Figs. 3 , 117 , 129 , 133 , Map 4 )

Type Material. Holotype. ♂, with three labels: “New Zealand MB| Pelorus Bridge [41°18′S, 173°34′E]| 25 Jul 1967 | G. Kuschel| litter 67/ 220/ FMNH-INS 0000 048 207 / HOLOTYPE Agnosthaetus zonatus Clarke , ♂, design. D. Clarke 201”, in NZAC. Paratypes. 46 specimens (24♂ 22♀). NEW ZEALAND: South Island: Marlborough, Okiwi Bay, 27.viii.1965, 65/440, moss, J.I. Townsend, 1♂, 1♀, FMNH-INS 48498– 499 (in NZAC); Orr Hill, French Pass, 41°0′S, 173°48′E, 25.iv.1963, 63/13, litter, G. Kuschel, 2♂, 1♀, FMNH-INS 48236–238 (in NZAC); Ronga Valley, 41°13.002′S, 173°36′E, 28.ii.1957, E.S. Gourlay, 1♂, FMNH-INS 48247 (in NZAC); MB: Eli Bay, 41°8.052′S, 173°59.136′E, 30.vii.1944, A.C. O’ Connor, 1♂, FMNH-INS 48189 (in NZAC); Maungatapu Saddle, 731 m, 41°18.258′S, 173°25.056′E, 15.xi.1967, 67/83, litter, J.I. Townsend, 3♀, FMNH-INS 48240, 254–255 (in NZAC); Opouri Saddle, 41°8.496′S, 173°43.866′E, 22.v.1964, 64/58, litter, J.I. Townsend, 1♂, FMNH-INS 48239 (in NZAC); Pelorus Bridge, 41°18′S, 173°34′E, 25.vii.1967, 67/220, litter, G. Kuschel, 2♀, FMNH- INS 48208–209 (in NZAC); Pelorus Bridge Scen. Res., Havelock (15 km W), 30 m, 41°18′S, 173°34′E, mixed forest, 25–28.v.1982, FMHD#82-600; Peck#82-21, litter, S. & J. Peck, 1♂, FMNH-INS 48210 (in FMNH); Pelorus Bridge Scenic Reserve , 35 m, ANMT 1155, 41°18.3′S, 173°34′E, mixed broadleaf (incl. Nothofagus spp. )-podocarp forest, 27.xi.2005, FMHD#2005-042, berl., leaf & log litter, A. Newton, A. Solodovnikov, & D. Clarke, 1♀ (in FMNH); Pelorus Reserve , 41°17.916′S, 173°33.774′E [coord.=Pelorus Bridge], 2.x.1965, 63/25, litter, J.I. Townsend, 1♀, FMNH-INS 48211 (in NZAC); Pelorus Sound, Manaroa, 137 m (as “ 4–500 ft ”), 41°6.906′S, 174°1.608′E [coord= Manaroa], x.1944, leaf mould, A.C. O’ Connor, 1♂, FMNH-INS 48188 (in NZAC); Pine Valley, 41°30′S, 173°31′E, 19.xi.1999, RL 498, leaf litter, R. Leschen & R. Hoare, 1♂, FMNH-INS 48243 (in NZAC); Port Ligar, 304 m, 40°54.786′S, 173°58.278′E [coord.=Port Ligar homestead], 26.x.1969, 69/75, litter, 1♂, FMNH-INS 48241 (in NZAC); NN: Dun Mountain, 41°20.646′S, 173°22.548′E, 30.vi.1966 [as 31 Jun 1966], 66/274, litter, A.K. Walker, 1♀, FMNH-INS 48192 (in NZAC); Dun Mountain, 609 m (as 2000 ft), 41°20.646′S, 173°22.548′E, 11.iv.1943, E.S. Gourlay, 1♀, FMNH-INS 48190 (in NZAC); 10.i.1942, E.S. Gourlay, 1♀, FMNH-INS 48191 (in NZAC); Dun Mountain, 762 m (as 2500 ft), 41°20.646′S, 173°22.548′E, 13.xi.1961, 61/1, G. Kuschel, 1♂, 2♀, FMNH-INS 48507–509 (in NZAC); Dun Trk. [prob. on Dun Mountain, NN], 701 m, 14.ii.1942, E.S. Gourlay, 1♀, FMNH-INS 48022, 3♂, 1♀, FMNH-INS 48184–187 (in NZAC); Nelson, 41°17′S, 173°17′E, 31.v.1941, E.S. Gourlay, 2♂, 1♀, FMNH-INS 48181–183 (in NZAC); Nelson, Cable Bay, Peninsula of Maori Pa Rd., 41°10.26′S, 173°25.56′E [coord.=Bishop Peninsula, the only Pen. along Maori Pa Rd.], 20.viii.1965, 65/429, moss, J.I. Townsend & A.K. Walker, 1♂, FMNH- INS 48505 (in NZAC); Saddle Hill, NW slope, Doubles Trk., 770 m, ANMT 724, 41°16′S, 173°25′E, Nothofagus spp. forest, 31.xii.1984, FMHD#85- 456, litter, forest, Berl., A. Newton & M. Thayer, 1♀ (in); Takaka, Waingaroa R. (ridge on) [elev. as “ 9144 m ”], 29.viii.1965, 65/447, lichens, A.K. Walker, 1♂, FMNH-INS 48500 (in NZAC); Whangamoa Saddle, 41°13.272′S, 173°26.214′E, 12.viii.1965, 65/410, moss, A.K. Walker, 1♀, FMNH-INS 48221 (in NZAC); 12.viii.1965, 65/ 415, moss, J.I. Townsend, 2♂, FMNH-INS 48222– 223 (in NZAC); Whangamoa Saddle, 353 m [elev. correct?], 41°13.272′S, 173°26.214′E, 12.viii.1965, 65/414, lichen, A.K. Walker, 1♂, FMNH-INS 48504 (in NZAC); Whangamoa Saddle (0.7 km S), Slaters Road, 410 m, ANMT 703, 41°14′S, 173°26′E, Nothofagus spp. forest, 29.xii.1984, FMHD#85- 428, litter, forest, Berl., A. Newton & M. Thayer, 1♀, FMNH-INS 48224 (in FMNH); SD: Mt. Stokes Trk., 587 m, 41°5.215′, 174°8.13′E, podocarp-beech (large leafed) forest, 11.xii.2007, KM106, sifted leaf litter, K. Marske & J. Allwood, 1♂ (in NZAC); SD: Opouri Saddle, above Tennyson Inlet, 540 m, ANMT 708, 41°8.5′S, 173°43.9′E, Nothofagus spp. forest, 15.xii.1984, FMHD#85-436, litter, forest, Berl., A. Newton & M. Thayer, 1♀, FMNH- INS 48242 (in FMNH); Pelorus Sound, Maud I., 41°1.494′S, 173°53.508′E, 1–6.iii.1953, E.S. Gourlay, 1♂, FMNH-INS 48244 (in NZAC); Pelorus Sound, Tennyson Inlet, Nelson (70 km NE), 480 m, 41°8′S, 173°44′E, Nothofagus forest, 27.v.1982, FMHD#82-604, litter, S. & J. Peck, 1♂, 1♀, FMNH-INS 48232–233 (in FMNH); Titirangi, 41°1.416′S, 174°7.752′E, 22.x.1969, 61/177, litter, F.A. Alack, 1♂, FMNH-INS 48235 (in NZAC).

Diagnosis. Agnosthaetus zonatus may be reliably distinguished from all other species of Agnosthaetus , except A. brouni , A. bicolor , and A. tumidus , by the same combination of characters given for A. brouni (see Diagnosis for that species, p. 35). From A. brouni , A. bicolor , and A. tumidus , the aedeagus of A. zonatus may be easily distinguished by the slender, rod-like paramere (in both dorsal and lateral view, rather than distinctly lamellate), which in dorsal view is distinctly sinuously curving from base to apex ( Fig. 129 , cf. Figs. 121–122 , 130 ).

Description. Color: Variable, yellowish to reddish brown, frequently with darker elytra and abdominal segments ( Fig. 3 ). Head: Frontal ridge present (cf. Fig. 12 , fr). Dorsum moderately densely punctate; with punctures distributed evenly over surface, but occasionally absent from middle part. Punctures variable, ranging from deep and more or less well-defined to shallow and indistinct; diameter up to 2X diameter of eye facet; interpuncture distance inconsistent, punctures irregularly disposed, 0.5–>1.0X puncture diameter. Dorsal microsculpture absent. Dorsal tentorial sulcus (cf. Figs. 10–11 , dt) distinctly slit-like; width subequal to or less than puncture diameter. Sublongitudinal ridge (cf. Fig. 10 , sr) distinct; not confused by smaller carinae or punctures; crest at antennal tubercle without distinct microsculpture. Area above and behind antenno-ocular carina ( Figs. 10–11 , arrow) more or less smooth, without subsidiary carinae, or with single subsidiary carina formed by confluent punctures. Antenno-ocular carina joining eye at or behind middle (cf. Fig. 12 , ao). Temple ( Fig. 11 , tm) short, less than 50% EYL. Subocular surface with narrow well-demarcated band of microsculpture (cf. Fig. 63 , bm). Labrum distinctly sexually dimorphic ( Fig. 117 ). Apical labral margin in males strongly emarginate medially, evenly dentate, with 20–23 teeth (n =8), all teeth normal, projecting more or less anteriorly. Apical labral margin in females broadly convex, not emarginate medially; with 21–26 teeth (n =11), medial tooth elongate, twice length of others. Adoral labral surface in males smooth, without subapical transverse ridge. Mandible more or less identical in both sexes; males and females with single, mesially directed tooth, males with weakly developed preapical spur (cf. Fig. 190 , arrow); females without spur. Prothorax: Pronotum without microsculpture. Medial pronotal sulci anteriorly separate from and terminating posterior to anterior punctures (cf. Fig. 78 ). Distance between medial sulci very slightly greater posteriorly.Pronotal basolateral carina absent (cf. Fig. 78 ). Anterior pronotal puncture (cf. Fig. 70 , ap) absent or indistinct; medial puncture (cf. Fig. 70 , mu) distinct; basal puncture ( Fig. 70 , bu) absent. Medial pronotal seta subequidistant from medial and lateral sulci (cf. Fig. 78 ). Pronotal hypomeron ( Fig. 24 , hy) shiny, without microsculpture. Prosternum without microsculpture. Pterothorax: Elytron ( Fig. 23 , e) without microsculpture; with 2 macrosetae, not set in punctures; laterally with single ridge (cf. Fig. 24 , ek). Mesothoracic epimeral region ( Fig. 24 , mer) shiny, without microsculpture. Metathoracic pleural region ( Fig. 24 , m) shiny, without microsculpture. Metathoracic pleural ridge absent; metathoracic pleural groove ( Fig. 24 , gr) complete, continuing to or near to pleurocoxal articulation. Abdomen: Abdominal vestiture long and short, somewhat appressed, dorsally with radiating fans of setae either side of midline and laterally, or more or less evenly projecting posteriorly but with middle setae directed posteromedially. Abdominal sternite V of male with large, diffuse patch of coarser setae medially. Aedeagus ( Fig. 129 ): “ Type A” (see description on p. 8). Apical part of median lobe distinctly trilobate, with rounded lateral lobes and abruptly distinct, broadly acuminate, and sharply pointed apicomedian lobe. Both apicolateral and apicomedial setae short ( Fig. 133 ). Paramere exceeding apex of median lobe; slender in both dorsal and lateral view; in dorsal view with outer side sinuously curving; with 2 distinct pairs of setae, 1 at apex, 1 somewhat displaced basally; internal sac as in Fig. 199 .

Etymology. The specific epithet zonatus (-a, -um) is an adjective from Latin, meaning of different kinds or colors, banded, and refers to the color variation in this species.

Distribution. ( Map 4 ). South Island: MB, SD.

Biology and Ecology. Habitat: Nothofagus and mixed forest. Specimens have been taken in leaf litter and bryophytes. Phenology: year-round. Elevation: 30–1,676 m.

Remarks. The structure of the median lobe and parameres (non-lamellate in this species; Figs. 129 , 133 ) will easily distinguish it from the externally indistinguishable North Island species, and from the next species.

Figures

Map 4. Geographic distribution of all georeferenced specimens of South Island species in the Agnosthaetus brouni and Agnosthaetus ecarinatus species-groups. Triangles = A. impressus; star = A. ecarinatus; circles = A. zonatus; squares = A. bicolor; Xs = A. nitidus; triangle with dot = A. leviceps.

Figs. 1–8. Habitus photographs of Agnosthaetus spp. 1) A. brounides; 2) A. chiasma; 3) A. zonatus; 4) A. kaikoura;

Figs. 113–120. Male (left) and female (right) labra of species in the Agnosthaetus brouni species-group, dorsal (anterior margin) view. 113) A. brouni; 114) A. tumidus; 115) A. aequalis; 116) A. akatarawa; 117) A. zonatus; 118) A. bicolor; 119) A. impressus; 120) A. nitidus. Scale bar = 100 mm.

Figs. 129–132. Aedeagi of species in the Agnosthaetus brouni species-group, dorsal (left) and right lateral (right) views. 129) A. zonatus; 130) A. bicolor; 123) A. impressus; 124) A. nitidus. Scale bar = 100 mm.

Figs. 133–136. Apex of median lobe of species in the Agnosthaetus brouni species-group, ventral view.

Figs. 121–124. Aedeagi of species in the Agnosthaetus brouni species-group, dorsal (left) and right lateral (right) views. 121) A. brouni; 122) A. tumidus; 123) A. aequalis; 124) A. akatarawa. Scale bar = 100 mm.

Figs. 10–13. Head capsules of Agnosthaetus spp. 10) A. stilbus; 11) A. rodmani; 12) A. brouni; 13) A. chiasma. Scale bars = 100 mm.

Figs. 63–68. Heads of Agnosthaetus spp., ventral view. 63) A. brouni; 64) A. stilbus, oblique view; 65) A. chiasma;

Figs. 189–194. Mandibles of Agnosthaetus spp., dorsal view (189–193, left; 194, right). 189) A. newtoni; 190) A. falx; 191) A. stenomastax; 192) A. heteromastax (Rakeahua Valley); 193) A. heteromastax (Big South Cape Island); 194) A. heteromastax (Twilight Bay). Scale bar = 100 mm.

Figs. 75–78. Pronota of Agnosthaetus spp. 75) A. vicinus; 76) A. stilbus; 77) A. nitidus; 78) A. brouni. Scale bar =

Figs. 69–74. Pronota of Agnosthaetus spp. 69) A. chiasma; 70) A. rodmani; 71) A. heteromastax; 72) A. stenomastax;

Figs. 23–24. Agnosthaetus cariniceps, thorax. 23) Dorsal view; 24) Left lateral view. Scale bars = 100 mm.

Figs. 198–200. Aedeagi of some species in the Agnosthaetus brouni species-group with details of partly everted internal sac, dorsal. 198) A. tumidus; 199) A. zonatus; 200) A. bicolor. Scale bar = 100 mm.