Teretrispa daccordii, Borowiec & Świętojańska & Sekerka, 2019

Borowiec, Lech, Świętojańska, Jolanta & Sekerka, Lukáš, 2019, Revision of the tribe Cryptonychini (Coleoptera: Chrysomelidae: Cassidinae) of New Caledonia, Zootaxa 4690 (1), pp. 1-71 : 47-49

Teretrispa daccordii sp. nov.

(Figs 151–162, 231)

Etymology. Dedicated to our friend and excellent specialist in taxonomy of Chrysomelinae, Dr. Mauro Daccordi from Italy who collected this new species.

Type locality. New Caledonia, Mt. Humboldt , refuge at 1360 m a.s.l.

Diagnosis. Teretrispa daccordii sp. nov. and T. orchidaceae distinctly differ from T. gahniae in black pronotum and legs (in T. gahniae yellow, ferrugineous or brown). Teretrispa orchidaceae also distinctly differs in smaller body, with length only 8.4 mm (in T. daccordii 11.0–13.0 mm) and only one row of punctures in anterior half of elytra between intervals 3 and 5 (in T. daccordii two regular rows in entire length). Teretrispa longicollis sp. nov. differs in pronotum without anterolateral tubercles and ferrugineous legs.

Description. Length 10.70–13.20 mm, width 2.95–3.80 mm.

Head, pronotum and scutellum deep black. Elytra of variable colouration; in darkest specimens almost entire background black, elytral costae, explanate margin and extreme apex orange-red; in palest specimens elytra mostly testaceous-red except black area behind scutellum between suture and second row of punctures extending to 1/5 length of elytra but with diffused posterior border, also sutural costa in basal half partly black (Figs 151–154); between darkest and palest form all intermediates occur. Antennae, legs and ventral side black. Abdomen often with small, reddish-brown patches on side of each ventrite. Body glabrous except for yellowish hairs on frontoclypeus, short golden brown pubescence on distal antennomeres and golden orange pubescence on tarsal pads and apices of tibiae. Head approximately 1.3 × as wide as long (including interantennal process), interocular plate rectangular, almost flat, without basal impressions, well separated from vertex by deep impression, sides in basal half with elevated margin, anterior corners angulate, margined posteriorly by oblique fold. Surface of interocular plate coarsely and densely punctate, appearing slightly irregular, interspaces from slightly narrower to slightly wider than puncture diameter, and with deep medial sulcus extending to 4/5 length of plate, close to base of interantennal process sulcus ends in deep pit; interantennal process short, extending at most to ¾ length of antennomere I, curved upwards and thus appearing like short rhinoceros horn, flattened laterally but with obtuse apex, with fine sulcus along whole dorsal length (Fig. 157). Frontoclypeus elongate, 1.6 × as long as broad (including interantennal process), rounded apically, anterior corners obtuse and not tuberculate, surface flat, on whole surface (except ventral side of interantennal process) with coarse and dense punctures, punctures almost touching each other and surface appears irregular to rugose, without medial sulcus or keel, whole surface with sparse, long hairs (Fig. 156). Antennae 0.41 × as long as body, slightly compressed apically; antennomere I large, approximately 1.4 × as long as broad; antennomere II slightly elongate, 1.4 × as long as broad and 0.6 × as long as I; antennomere III elongate, 1.3 × as long as II; antennomeres IV–V as long as and antennomere VI slightly shorter than II; antennomeres VII–X elongate, 1.1–1.2 × as long as II and slightly shorter than III; antennomere VII as long as III; antennomere XI 1.7 × as long as X, subangulate apically (Fig. 155). Pronotum approximately as long as broad, with triangular anterolateral tubercles, sides behind tubercles parallel, anterior margin distinctly convex, basal margin bisinuate; anterior angles obtuse without small tubercles, basal angles bearing small, acute tooth (Fig. 158); disc at top flat, without impressions, without or with rudiments of medial sulcus, only sides in front of anterolateral tubercle impressed, surface shiny, with mixed coarse and moderately coarse punctation disposed regularly on whole surface, interspaces mostly narrower than puncture diameter, without any impunctate areas except oblique narrow fold from anterolateral tubercles to middle of pronotum, sometimes small impunctate patches present close to rudiments of medial sulcus. Elytra 3 × as long as broad, subparallel-sided basally and slightly broadened posteriorly and widest somewhat behind middle. Apex of elytra rounded, with straight sutural and rounded lateral angle. Disc without scutellar row; seven rows in posthumeral part, eigth rows behind middle and ten rows apically; intervals 1–2 flat, interval 3 obtusely and broadly costate on whole length, interval 5 apically and posthumeral interval anteriorly slightly elevated. Ventral surface shiny, hypomera with several coarse but sparse punctures; prosternum smooth with elevated anterior margin separated from prosternal process with punctate sulcus, prosternal alae mostly smooth and shiny with a few moderately fine punctures, intercoxal area and expanded apex with fine and sparse punctation, mesoventrite in anterior corners finely punctate, central part and apex with fine longitudinal and oblique striation, metaventrite along lateral margin with row of coarse and additional small punctures, central part and anterior process finely punctate, and posterolateral convex angles with longitudinal and oblique striation; abdomen mostly smooth and shiny with fine pricks. Legs slim, slightly sexually dimorphic (Figs 159–162).

Sexual dimorphism weakly manifested, in males interantennal process slightly longer, fore tibiae apically armed with slightly longer black spine than females, apex of last ventrite in males broadly and deeply emarginate and not obviously pubescent in females shallowly emarginate densely pubescent.

Host plant. According to the label data the specimens were colected on Greslania sp. ( Poaceae ), endemic genus of bamboo.

Type material. Holotype: ♂, ‘ Nouvelle Calédonie | Mt. Humboldt, presso | il rifugio – 15.II.2006 | m 1360 – Daccordi leg. [w, p, cb] || su Greslania sp. | Fam. Graminaceae [w, p, cb]’ ( MCSNG) . Paratypes: 23 spec., the same data as holotype, most also with additional label: ‘COLLEZIONE | M. DACCORDI [blue, p, cb]’ ( BMNH, BPBM, LS, MD, NMPC, WMNH) ; 14 ♂♂, 12 ♀♀, ‘ NEW CALEDONIA 11132 | 21°53'S × 166°25'E. | MtHum- boldt, refuge, 1350m. | 5-8Nov2002.ex Greslania sp | Monteith, Wright & Burwell [w, p, cb]’ ( LS, MNHN, QMBA) ; 2 ♂♂, 3 ♀♀, ‘ NEW CALEDONIA 11131 | 21°53'S × 166°25'E. 1350m | MtHumboldt, refuge. night | collecting 5-8Nov2002 | Burwell, Monteith & Wright [w, p, cb]’ ( LS, QMBA) ; 9 ♂♂, 4 ♀♀, ‘ NEW CALEDONIA 11136 | 21°53'S × 166°25'E. 1350m | MtHumboldt , refuge. | 5-8Nov2002, hand coll. | Burwell, Monteith & Wright [w, p, cb]’ ( LS, QMBA) ; 1 ♂, ‘ NEW CALEDONIA 11130 | 21°53'S × 166°25'E. | MtHumboldt , refuge. | 5-8Nov2002, 1350m. | S.Wright. beating [w, p, cb]’ ( QMBA) .