Zeanichnus kuschelianus (Franz) Franz, 2013

Jałoszyński, Paweł, 2013, Revision of subgenera of Stenichnus Thomson, with review of Australo-Pacific species (Coleoptera, Staphylinidae, Scydmaeninae), Zootaxa 3630 (1), pp. 39-79 : 62

Zeanichnus kuschelianus (Franz) , comb. nov.

( Figs. 63–64, 66 , 68–69, 72–73 )

Stenichnus (Austrostenichnus) kuschelianus Franz, 1977: 19 , Fig. 4 .

Type material studied. Holotype: 3: seven labels ( Fig. 66 ): " NEW ZEALAND AK / Tropicana Drive / Lynfield / 16.8. 1975 / G. Kuschel" [white, printed and handwritten in black], 'Gahnia / procera" [white, handwritten in black], " Stenichnus / ( Austrostenichnus ) / kuscheli [sic!] m. / det.H.Franz" [white, printed and handwritten in faded black]; " Type " 'red, handwritten in faded blue]; " Stenichnus / kuschelianus / Franz / det. G. Kuschel / 1980" [white, printed and handwritten in black]; "Entomology / Division / D.S.I.R. / New Zealand " [golden, printed]; and a printed registration label with code NZAC 04061242 (NZAC).

Diagnosis. Antennae massive, gradually thickened distally ( Fig. 63 ); aedeagus ( Figs. 72–73 ) stout with short lateral groups of needle-like internal sclerites.

Redescription. Body of male ( Fig. 63 ) strongly convex, elongate and slender, with long appendages, BL 1.80 mm; glossy, uniformly reddish-brown with slightly lighter appendages; vestiture yellowish.

Head ( Figs. 63 , 69 ) approximately subtriangular, broadest at eyes, HL 0.33 mm, HW 0.33 mm; tempora much shorter than eyes; vertex distinctly transverse and weakly, evenly convex, anteriorly confluent with frons; frons convex, just behind barely marked supraantennal tubercles with a pair of shallow circular impressions; eyes large and strongly convex, strongly oval and oblique in relation to the long axis of the head. Punctures on head dorsum fine and sparse, inconspicuous; setae short, sparse, suberect. Antennae ( Fig. 63 ) robust, gradually thickened distally, AnL 0.95 mm; antennomeres I–III strongly elongate, IV as long as broad, V–VI slightly longer than broad, VII–X each slightly transverse, XI 1.5 × as long as broad.

Pronotum ( Fig. 63 ) in dorsal view with large and subtriangular discal part broadest near anterior fourth of PL and short posterior collar demarcated by distinct lateral constriction, PL 0.48 mm, PW 0.39 mm; anterior and lateral margins of discal part confluent and rounded; posterior margin arcuate; hind pronotal corners indistinctly marked, blunt and obtuse; posterior collar dorsally indistinctly demarcated by shallow, narrow and arcuate transverse groove with deepened lateral parts running on pronotal sides and connecting very small and indistinct lateral ante-basal foveae located on sides of pronotum, groove extends at each end beyond lateral foveae nearly to adcoxal part of hypomeron; posterior collar in middle bearing indistinct and short median longitudinal ante-basal groove. Punctures on pronotal disc very fine and inconspicuous; setae long, sparse and recumbent to suberect.

Elytra ( Fig. 63 ) oval and more convex than pronotum, broadest between middle and anterior third, EL 1.00 mm, EW 0.70 mm, EI 1.43; humeral calli distinct, developed as elongate protuberances; elytral apices separately rounded. Punctures on elytral disc more distinct than those on pronotum but shallow and sparse; setae moderately long, sparse and suberect. Hind wings well-developed, twice as long as elytra.

Legs ( Fig. 63 ) long and slender; all tibiae straight or nearly straight.

Aedeagus ( Figs. 72–73 ) stout, AeL 0.38 mm, median lobe subtrapezoidal, with abruptly and strongly narrowed apical part of dorsal wall forming long subtriangular projection; internal armature complicated, composed of submedially located central complex and sub-apical lateral groups of short needle-like sclerites projecting distally from median lobe; parameres slender, each with two long apical setae.

Female. Unknown.

Distribution. New Zealand: North Island.

Figures

FIGURES 62 – 66. Zeanichnus insignis (Broun), holotype male (62, 65) and Zeanichnus kuschelianus (Franz), holotype male (63 – 64, 66). Dorsal (62 – 63) and ventral (64) habitus and original set of labels (65 – 66).

FIGURES 67 – 73. Zeanichnus insignis (Broun), holotype male (67, 70 – 71) and Zeanichnus kuschelianus (Franz), holotype male (68 – 69, 72 – 73). Venter (67 – 68), head in ventral view (69), aedeagus in ventral (70, 72) and lateral (71, 73) views. Abbreviations: aest 2, mesoanepisternum; bst, basistipes; cd, cardo; gal, galea; gp, gular plate; gs, gular suture; h, hypostoma; hr, hypostomal ridge; hy, hypomeron; lac, lacinia; lb, labrum; lp, labial palp; lss, lateral suture of submentum; mcp, mesocoxal projection; mn, mentum; mscc, mesocoxal cavity; msvp, mesoventral intercoxal process; mtap, metaventral anterior process; mtfa, metafurcal arm; mtvp, metaventral intercoxal process; mxp, maxillary palp; nss, notosternal suture; occ, occipital constriction; pcc, procoxal cavity; pcs, procoxal socket; pl, posterior lobe of mesocoxal projection; pre, prepectus; si, setose impression of mesoventrite; smn, submentum; tm, temple; v 3, metaventrite.

FIGURES 1 – 4. Examples of dorsal (1, 2, 4) and lateral (3) habitus of Stenichnus s. str. Stenichnus bicolor (Denny) (1); S. collaris (Müller & Kunze) (2, 3); S. totoro Jałoszyński (4).