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Fauna of New Zealand 69 - Landcare Research

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56<br />

and convex. Tempora oblique, moderately long (about 2/3<br />

as long as eyes). Paraglossae prominent, much longer than<br />

ligula. Thorax. Pronotum (Fig. 116) moderately convex,<br />

impunctate, strongly wrinkled between laterobasal foveae;<br />

apex strongly concave; anterolateral angles moderately<br />

developed, obtusely rounded; sides strongly rounded anteriorly,<br />

strongly sinuate posteriorly; lateral beads <strong>of</strong> similar<br />

width from apex to base; lateral depressions widening<br />

posteriorly; each anterolateral setiferous puncture situated<br />

just in front <strong>of</strong> middle and not touching lateral bead;<br />

posterolateral angles not denticulate; laterobasal foveae<br />

well defined, impunctate, wide, round; base emarginate<br />

medially, strongly oblique laterally, about as wide as apex<br />

and elytral base. Prosternum impunctate, unwrinkled.<br />

Proepisterna punctate, unwrinkled. Metepisterna coarsely<br />

and sparsely punctate. Elytra. Widest in front <strong>of</strong> middle.<br />

Shoulders denticulate. Sides moderately rounded. Striae<br />

moderately deep. Intervals moderately convex.<br />

Material examined. Five specimens (JNNZ, LUNZ,<br />

NZAC).<br />

Geographic distribution (Map p. 177). South Island:<br />

WD─Fox Glacier (Chancellor area, Castle Rocks Hut).<br />

Ecology. Subalpine. A moraine and a tussock/scrub area<br />

species. Open ground; sparsely vegetated soil. Nocturnal;<br />

sheltering during the day under stones. Biology. Seasonality:<br />

January, March. Predacious (based on mouthpart<br />

morphology).<br />

Dispersal power. Elytra fused basally along the suture.<br />

Subapterous. Moderate runner (based on leg morphology).<br />

Regular vegetation-climber (based on bilobed penultimate<br />

segment <strong>of</strong> pro- and mesotarsi). Vagility limited by flight<br />

incapacity.<br />

Reference. Liebherr, 2011b: 303–308 (ecology, geographic<br />

distribution, taxonomy).<br />

Genus Tarastethus Sharp, 1883 E reinstated<br />

Figures 72–77, 117–122, 212–217; Maps p. 180–181<br />

Tarastethus Sharp, 1883: 23. Synonymised with Molopsida by<br />

Britton, 1940: 477. Type species. Tarastethus puncticollis<br />

Sharp, 1883, designated by Lorenz, 1998: 170. Reinstated<br />

Description. Body: length 4.3–6.6 mm; not pedunculate.<br />

Colour dark or pale. Dorsal surface mostly glabrous. Microsculpture<br />

absent. Iridescence absent. Metallic lustre absent.<br />

Head. Mandibles moderately long. Labrum truncate<br />

to slightly emarginate anteriorly; anterior marginal setae<br />

equidistant. Antennae submoniliform; segments 1–3 glabrous<br />

(excluding apical setae). Eyes normally developed,<br />

convex; usually two supraorbital setiferous punctures on<br />

inner side <strong>of</strong> each eye, rarely a single puncture (anterior<br />

one missing in T. alpinalis). Interocular fovea present or<br />

Larochelle & Larivière (2013): Carabidae (Insecta: Coleoptera)<br />

absent. Tempora inflated. Mentum feebly depressed, not<br />

excavated laterally; median tooth acute apically, moderately<br />

or slightly shorter than lateral lobes; outer side <strong>of</strong><br />

lateral lobes slightly rounded. Ligula truncate and narrow<br />

apically. Paraglossae glabrous. Palpi: terminal segment<br />

fusiform, not elliptical, glabrous; penultimate maxillary<br />

segment glabrous. Thorax. Pronotum (Fig. 117–122)<br />

moderately transverse, slightly to strongly cordate; anterior<br />

bead incomplete (broadly interrupted medially); two<br />

setiferous punctures on each side; posterolateral angles<br />

usually subrectangular (acute and projecting laterally in<br />

T. southlandicus); laterobasal foveae present, usually deep<br />

(shallow in T. southlandicus), not sulcate; posterior bead<br />

absent; base about as wide as to much wider than apex.<br />

Scutellum partly visible, broad, inserted entirely between<br />

elytral bases. Metepisterna short, subquadrate. Legs.<br />

Tarsi glabrous dorsally, pubescent ventrally (segment 5 <strong>of</strong><br />

metatarsi with a single pair <strong>of</strong> ventral setae); segment 4 <strong>of</strong><br />

pro- and mesotarsi bilobed apically (cleft for more than<br />

half their length). Elytra. Strongly convex, ovate. Basal<br />

margin complete, reaching level <strong>of</strong> stria 1. Shoulders normally<br />

developed, obtuse or rounded. Scutellar setiferous<br />

pore present, inserted at base <strong>of</strong> stria 1. Scutellar striole<br />

usually present, short, usually uni- or bipunctate (rarely<br />

impunctate). Striae present, usually complete (incomplete<br />

in T. southlandicus), punctate. Striae 3 and 5 without setiferous<br />

punctures. Interval 8 carinate apically. Umbilicate<br />

series separated into two major groups (7+6 setiferous<br />

punctures), with posterior group continuous. Sutural<br />

apices angular. Abdomen. Sterna punctate (impunctate in<br />

T. southlandicus), unwrinkled. Last visible sternum (sternum<br />

VII): male with four apical and <strong>of</strong>ten two subapical<br />

ambulatory setae; female with four apical and two medial<br />

ambulatory setae. Aedeagus. Lateral view (Fig. 72–77):<br />

slightly to strongly arcuate; apex moderately to very wide,<br />

sometimes projecting ventrally. Dorsal view: symmetrical<br />

(ostium expanding equally towards sides) or asymmetrical<br />

(ostium deflected to the left or to the right); apex either<br />

straight or deflected to the left or to the right. Parameres.<br />

Left paramere elongate; both parameres setulose (with a<br />

few short setae at apex).<br />

References. Larochelle & Larivière, 2001: 64–<strong>69</strong> (as<br />

a synonym <strong>of</strong> Molopsida; catalogue), 2007a: 38 (as a<br />

synonym <strong>of</strong> Molopsida; description, ecology, geographic<br />

distribution, references).<br />

Remarks. The genus Tarastethus Sharp, 1883 was<br />

synonymised with Molopsida by Britton (1940) without<br />

justification. This taxon is resurrected from synonymy<br />

here on the basis <strong>of</strong> the bilobed apex <strong>of</strong> segment 4 <strong>of</strong> pro-<br />

and mesotarsi, a character unifying included species and<br />

distinguishing this genus from Molopsida and the newly

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