Agnosthaetus tumidus 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 : 36-38

publication ID	https://doi.org/ 10.1649/0010-065X-65.mo4.1
publication LSID	lsid:zoobank.org:pub:0818A3A2-AB42-43D8-8F76-4F65F367C584
persistent identifier	https://treatment.plazi.org/id/B75CD7DE-7AA1-4F4E-BBBA-54E63CDB845C
taxon LSID	lsid:zoobank.org:act:B75CD7DE-7AA1-4F4E-BBBA-54E63CDB845C
treatment provided by	Carolina
scientific name	Agnosthaetus tumidus Clarke
status	sp. nov.

Treatment

(10) Agnosthaetus tumidus Clarke View in CoL , new species

( Figs. 114 View Figs , 122 View Figs , 126 View Figs , Map 3 View Map 3 )

Type Material. Holotype. ♂, with five labels: “New Zealand BP| Lake Okataina [38°6′36″S, 176°23′53″E]| 9 Oct 1995 | M-C. Larivière &| A. Larochelle / litter 95/12/ FMNH-INS 0000 048 176 / Duplicate| specimens|in alcohol/ HOLOTYPE Agnosthaetus tumidus Clarke , ♂, design. D. Clarke 2011”, in NZAC GoogleMaps . Paratypes. 31 specimens (16♂ 15♀). NEW ZEALAND: North Island: BP: Kaimai , 37°50′S, 175°58′E, 12.iv.1941, A.E. Brookes GoogleMaps , 1♂, FMNH-INS 48194 (in NZAC) ; Kaimai Ra. , 600 m, 9.vi.1977, 77/83, litter, V.A.L. May , 1♀, FMNH-INS 48123 (in NZAC) ; Kaimai Ra., Leyland Tramline , 427 m, 22.ix.1981, 81/92, litter, B.M. May , 1♀, FMNH-INS 48122 (in NZAC) ; Kaimai Ra., Matamanga , Waikato, 37°50′S, 175°55′E, 10.xii.1945, A.E. Brookes Cn GoogleMaps ., 1♂, FMNH-INS 48193 (in NZAC) ; Kaimai- Mamaku Forest Park, Mt. Te Aroha , 957 m, 37°31.998′S, 175°45′E, 6.iii.1985, in Blechnum capense litter, R.C. Craw GoogleMaps , 1♂, 1♀, FMNH-INS 48124–125 (in NZAC) ; Lake Okataina , 38°6′36″S, 176°23′53″E [coord.=Lake Okataina Reserve ], 9.x.1995, 95/12, litter, M-C. Larivière & A. Larochelle GoogleMaps , 1♂, FMNH-INS 48177 (in NZAC) ; Lake Rotoma Scen. Res. , 38°3.24′S, 176°36.24′E, tawa dominant forest, 17.ix.1995, 95/8, litter, M-C. Larivière & A. Larochelle GoogleMaps , 1♂, FMNH-INS 48174 (in NZAC) ; Mt. Te Aroha , 300 m, 37°32.16′S, 175°44.52′E, 13.xi.1983, leaf litter, P.M. Hammond GoogleMaps , 1♀, FMNH-INS 48127 (in BMNH) ; Mt. Te Aroha , 600–800 m, 700 m, 37°32.16′S, 175°44.52′E, 12–13.xi.1983, leaf litter, P.M. Hammond GoogleMaps , 1♂, FMNH-INS 48126 (in BMNH) ; Okere Falls Scen. Res., 38°0′48″S, 176°20′44″E [coord.=Okere Falls], 21.xii.1979, 79/99, liverworts, J.S. Dugdale GoogleMaps , 1♂, FMNH-INS 48175 (in NZAC) ; Tapapa, Tukorehe Scen. Res. [as “Tapapa, Tukorehe Res.” = Fitzgerald Glade], 300 m, 38°0.18′S, 175°52.68′E [coord.= Fitzgerald Glade], broadleaf forest, 25–29.iii.1978, berl. litter, S. Peck GoogleMaps , 1♀, FMNH-INS 48257 (in MCZ) ; 19.ix.1995, 95/9, litter, M-C. Larivière & A. Larochelle, 1♀, FMNH-INS 48173 (in NZAC) ; TO: Erua , 39°14′S, 175°24′E, 5.iv.1938, A. Richardson GoogleMaps , 1♀, FMNH-INS 48130 (in NZAC) ; 27.i.1982, 82/18, sifted litter & moss, C.F. Butcher, 2♀, FMNH- INS 48128–129 (in NZAC) ; Erua S.F., Makatoe , SH4, 39°16′30″S, 175°23′20″E, 1.i.1996, NZEA 1L C98 079 A, G. Barker GoogleMaps , 3♂, KUNHM-ENT SM0364102, KUNHM-ENT SM 0364091, KUNHM-ENT SM0364107 (in KSEM) ; Erua, Main Trunk , 39°13.998′S, 175°24′E, T. Broun Cn., A.E. Brooks Cn GoogleMaps ., 1♀, FMNH-INS 48131 (in NZAC) ; Ohakune, Makatoti [= error for Makatote], 785 m, 39°15.78′S, 175°23.1′E [coord.=nr. Makatote Viaduct], 8.iii.1957, (“RAL”) GoogleMaps , 1♂, FMNH-INS 48132 (in NZAC) ; Rangipo Intake, Turangi (36 km S), 900 m, ANMT 617.1 [site number not on labels], 39°13′S, 175°47′E, Nothofagus forest, 6.iv.1980, leaf and log litter, A. Newton & M. Thayer GoogleMaps , 1♀, FMNH-INS 38201 (in BMNH) ; Waituhi Saddle , 920 m, 38°51.859′S, 175°32.761′E, 2.ix.1993, in decayed wood, J.T. Nunn GoogleMaps , 1♂, FMNH- INS 19680 (in JTNC) ; 16.xi.1983, 83/112, leaf litter, moss and rotten wood, C.F. Butcher, 1♂, FMNH-INS 48178 (in NZAC) ; Waituhi Saddle Rd. , 670 m, 9.x.1979, 79/92, litter & bryophytes, J.S. Dugdale , 2♀, FMNH-INS 48179–180 (in NZAC) ; WO: Kaimai Range, Matamata , 37°40.302′S, 175°51.798′E, 26.xii.1943, A.E. Brookes GoogleMaps , 1♀, FMNH-INS 48196 (in NZAC) ; v.1920, A.E. Brookes, 1♂, FMNH-INS 48197 (in BMNH) ; 14.iii.1922, A.E. Brookes, 1♀, FMNH- INS 48195 (in NZAC) ; Marokopa V. [mispelled as “Marakopa”], Waitomo (18 km W), 38°15.12′S, 174°53.28′E [coord. assumed in forest NW of “ Natural tunnel”], 4.xii.1983, leaf litter, P.M. Hammond GoogleMaps , 2♂, FMNH-INS 48120–121 (in BMNH) .

Diagnosis. Agnosthaetus tumidus may be reliably distinguished from all other species of Agnosthaetus , except A. brouni , A. bicolor , and A. zonatus , by the same combination of external characters given for A. brouni (see Diagnosis for that species, p. 35). From A. brouni , A. bicolor , and A. zonatus , the aedeagus of A. tumidus may be distinguished by the combination of apical part of median lobe without subparallel ridges near base ( Fig. 126 View Figs , cf. Fig. 134 View Figs , arrow), paramere in dorsal view with apical part convex mesially ( Fig. 122 View Figs , arrow), and the basal sclerite of internal sac narrowly U-shaped, with arms subparallel (often nearly contiguous) and with curved apical extensions ( Fig. 196 View Figs , arrows).

Description. Color: Variable, yellowish to reddish brown, abdominal segment VI nearly black. Head: Frontal ridge present (cf. Fig. 12 View Figs , fr). Dorsum moderately densely punctate; with punctures distributed anteriorly, laterally, and posteriorly on disc, middle part impunctate. Punc-

tures deep, but indistinctly defined; 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 View Figs , dt) distinctly slit-like; width subequal to or less than puncture diameter. Sublongitudinal ridge (cf. Fig. 10 View Figs , 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 View Figs , 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 View Figs , ao). Temple ( Fig. 11 View Figs , tm) short, less than 50% EYL. Subocular surface with narrow, well-demarcated band of microsculpture (cf. Fig. 63 View Figs , bm). Labrum distinctly sexually dimorphic ( Fig. 114 View Figs ). Apical labral margin in males strongly emarginate medially, evenly dentate, with 11–28 teeth (n =6), with or without large, anteriorly projecting medial tooth. Apical labral margin in females broadly convex, not emarginate medially; with 20–33 teeth (n =8), 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 View Figs , arrow); females without spur. Prothorax: Pronotum without microsculpture. Medial pronotal sulci anteriorly separate from and terminating posterior to anterior punctures (cf. Fig. 78 View Figs ). Distance between medial sulci slightly greater posteriorly. Pronotal basolateral carina absent (cf. Fig. 78 View Figs ). Anterior pronotal puncture (cf. Fig. 70 View Figs , ap) absent or indistinct; medial puncture (cf. Fig. 70 View Figs , mu) distinct; basal puncture ( Fig. 70 View Figs , bu) absent. Medial pronotal seta subequidistant from medial and lateral sulci (cf. Fig. 78 View Figs ). Pronotal hypomeron ( Fig. 24 View Figs , hy) shiny, without microsculpture. Prosternum without microsculpture. Pterothorax: Elytron ( Fig. 23 View Figs , e) without microsculpture; with2 macrosetae, not set in punctures; laterally with single ridge (cf. Fig. 24 View Figs ). Mesothoracic epimeral region ( Fig. 24 View Figs , mer) shiny, without microsculpture. Metathoracic pleural region ( Fig. 24 View Figs , m) shiny, without microsculpture. Metathoracic pleural ridge absent; metathoracic pleural groove ( Fig. 24 View Figs , 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. 122 View Figs ): “ 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. 126 View Figs ). Paramere not exceeding apex of median lobe; lamellate, in lateral view distinctly broad along most of length; with apical part curving ventrally; in dorsal view with outer side gently convex; with 4 large setae near inner edge of apex; internal sac as in Figs. 196 View Figs , 198 View Figs .

Etymology. The specific epithet tumidus is a Latin adjective meaning swollen and refers to the form of the aedeagal median lobe.

Distribution. ( Map 3 View Map 3 ). North Island: BP; HB; TO; WO.

Biology and Ecology. Habitat: Nothofagus and broadleaf forest. Specimens have been taken from forest leaf and log litter, and bryophytes. Phenology: year-round. Elevation: 300– 957 m.

Remarks. Several male specimens with identical aedeagi have a very broad medial spine in the centere of the labral emargination, but these specimens are here considered to belong to A. tumidus based on aedeagal characters. They differ from A. aequalis in lacking the basal pronotal carina (as in Fig. 78 View Figs ) and metathoracic pleural ridge (as in Figs. 85–86 View Figs ).