Stenocyphon neozealandicus, Ruta, Rafał, Thorpe, Stephen & Yoshitomi, Hiroyuki, 2011

Ruta, Rafał, Thorpe, Stephen & Yoshitomi, Hiroyuki, 2011, Stenocyphon neozealandicus, a new species from New Zealand of a previously monotypic subfamily from Chile (Coleoptera: Scirtidae: Stenocyphoninae), Zootaxa 3113, pp. 65-68 : 65-68

Stenocyphon neozealandicus sp. nov.

( Figs. 1–8 )

Type material. Holotype, male ( AMNZ): “ NEW ZEALAND ND / Warawara F. P. / south of camp / 7 Dec 2008 / D. S. Seldon” [white label, printed]; “beating at night” [white label, printed]; “ Stenocyphon / n. sp. / det. S. E. Thorpe, 2011” [white label, printed]; “ AMNZ 85074 / AUCKLAND / MUSEUM / NEW ZEALAND ” [blue label, printed]. Paratype, male ( AMNZ): same data as the holotype, with the exception of museum label: “ AMNZ 85094 / AUCKLAND / MUSEUM / NEW ZEALAND ” [blue label, printed].

Diagnosis. Dorsum uniformly black (in S. sasajii bicolored: head and pronotum orange, elytra black), body small TL 3.3–3.8 (in S. sasajii TL 4.5–6.0), anterior tibiae with deeply excised ventral margin in males (in S. sasajii anterior tibiae simple); apical half of penis distinctly widened (in S. sasajii apical half of penis subparallel, only short apical portion widened).

Description. Holotype, male, TL 3.8. Body extremely elongate, TL/EW 3.5, covered with suberect setae, which are brown on elytra and whitish on head and pronotum. Head, pronotum and elytra black, legs and mouthparts dark brown, antennomeres 1–3 yellowish, 4–9 black, 10–11 somewhat lighter, brownish.

Head covered with dense, granulate punctures, separated by about 0.7 X puncture diameter. Eyes big, protuberant; head 2.1 X wider than interocular space. Antennae filiform, antennomeres 1 & 2 subcylindrical, antennomere 2 distinctly shorter and narrower than antennomere 1, antennomeres 3–10 long and subconical, apical antennomere rounded apically. Length ratio of antennomeres: 1.5: 1.0: 1.6: 2.0: 1.8: 1.6: 1.6: 1.6: 1.4: 1.4: 1.9; length/width ratio of antennomeres: 1.9, 2.0, 2.7, 3.1, 2.1, 2.1, 2.1, 2.0, 2.0, 1.9, 2.1. Palpomeres of maxillary palpi moderately wide.

Pronotum elongate, PW/PL 0.9, disc moderately convex, covered with dense, granulate punctation, punctures elongated, and separated by about 0.3–0.5 X puncture diameter, partially arranged in longitudinal lines. Anterolateral angles obtuse, posterolateral corners well marked, slightly extended externally, almost right-angled. Sides of pronotum subparallel, subtly emarginated in posterior half, lateral carinae not marked; base of pronotum subtly bisinuate; basal pronotal groove well marked. Scutellum rugose, subtriangular, sides slightly rounded.

Elytra distinctly wider than pronotum, elongate, subparallel (EL/EW 2.7; EL/PL 3.8; EW/PW 1.6), with well marked humeri. Punctation strong, punctures separated by about 0.5–1.0 X puncture diameter, in adscutellar portion denser, separated by about 0.2–0.3 X puncture diameter, sometimes almost confluent. Hind wings fully developed.

Legs long. Protarsomere 1 short, as long as protarsomere 2; meso- and metatarsomere 1 elongated, 2 X longer than meso- and metatarsomere 2 respectively. Protibia with deeply excised ventral margin in anterior portion, protibial spurs short, but well marked, subequal in length. Mesotibia straight, slightly widening apically, mesotibial spurs well developed, dorsal one distinctly longer than ventral one. Metatibia very long, somewhat sinuate, with long apical spurs. Longer (dorsal) metatibial spur as long as 2/3 length of metatarsomere 1, shorter spur half as long as longer one.

Abdomen 2 X longer than wide, sternites 3–6 subequal in length, sternite 7 somewhat longer, with truncate apex. Tergite 8 (L 0.53, W 0.50) subtrapezoidal, truncate at apex, with a row of dense, short apical setae. Sternite 8 (L 0.78, W 0.52) U-shaped, with lightly sclerotized middle portion, apical portion emarginated with sparse, short setae. Tergite 9 (L 0.90, W 0.30) fused with sternite 9 in basal portion (L 1.22, W 0.20) and forming a ring-like structure. Apex of tergite 9 truncate and covered with a row of minute setae. Sternite 9 with basally fused apodemes and long, narrow apical plate, which is densely covered with setae.

Aedeagus (L 1.10, W 0.37) of structure typical for Stenocyphon . Parameres widening apically (when seen in lateral view), subtriangular at apex and covered with distinct setae. Apical half of penis distinctly widened, and covered with setae.

Female unknown.

Variation. Two specimens studied varied in length (TL 3.3–3.8).

Measurements. Male (n = 2): TL 3.3–3.8, PL 0.7–0.8, PW 0.7, EL 2.5–3.0, EW 0.9–1.1. Distribution. New Zealand, Northland.

Etymology. After terra typica, New Zealand.

Figures

FIGURES 1 – 2. Stenocyphon neozealandicus sp. nov. 1) holotype, habitus; 2) protibia. Scale bar 1.0 mm (1), 0.1 mm (2).

FIGURES 3 – 8. Stenocyphon neozealandicus sp. nov., male genitalia. 3) aedeagus, dorsal view; 4) aedeagus, lateral view; 5) tergite & sternite 9; 6) tergite 8; 7) sternite 8; 8) terminal segments and aedeagus. Scale bar = 0.5 mm.