Wanatispa cylindricollis, 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 : 61-63

Wanatispa cylindricollis sp. nov.

(Figs 203–209, 238)

Etymology. Named after subcylindrical pronotum.

Type locality. New Caledonia, Mt. Paniè , 800–950 m a.s.l.

Diagnosis. Wanatispa cylindricollis sp. nov. differs in pronotum with lateral carina present at least on basal half (without lateral carina in W. rutai sp. nov.); elytra with ten rows behind middle and 12 apically (with eigth rows of punctures behind middle and ten apically in W. rutai sp. nov.); and frontoclypeus with median keel along whole length and without apical impression (with median keel only in basal half and with deep apical impression in W. rutai sp. nov.).

Description. Length 13.05–15.10 mm, width 3.75–4.00 mm.

Head yellowish-red to ferrugineous. Pronotum ferrugineous with black stripe along sides. Elytra brownishblack with yellowish costa, base and lateral margin, sometimes also interval 5 with short yellowish stripes at base and on apical part (Fig. 203). Antennae ferrugineous. Thorax and abdomen completely black in palest specimens with indistinct paler spots on sides of ventrites. Legs uniformly ferrugineous. 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 slightly wider than long, interocular plate rectangular, as long as wide (except interantennal process), almost flat, at base not impressed, separated from vertex by row of small and sparse punctures, sides and anterior corners not carinate or elevated. Surface of interocular plate coarsely but sparsely punctate, distance among punctures distinctly larger than puncture diameter, interspaces smooth and shiny, medial sulcus varies from short, extending to less than ⅓ length of plate to long, extending to 4/5 length of plate; interantennal process extending to ¾ length of antennomere I, strongly flattened laterally, keel-shaped, acute apically, without sulcus along dorsal side (Fig. 206). Frontoclypeus twice as long as broad, excluding interantennal process and 2.8 × as long as broad including interantennal process, acute apically, anterior corners without tubercles, surface flat with fine and sparse setose punctures, along middle runs narrow median keel, surface along both sides of keel shallowly impressed (Fig. 205). Antennae approximately 0.4 × as long as body, slightly compressed apically; antennomere I elongate, twice as long as broad; antennomere II elongate, 1.7 × as long as broad, 0.6 as long as I; antennomere III as long as II; antennomeres IV–V slightly shorter than III; antennomere VI slightly shorter than III; antennomere VIII approximately 1.3 × as long as III; antennomeres IX–X slightly shorter than III; antennomere XI 1.6 × as long as X, subangulate apically (Fig. 204). Pronotum approximately as long as broad, subcylindrical, only in anterior 1/5 distinctly converging anteriad then sides parallel, anterior margin moderately convex, basal margin bisinuate, lateral carina obtuse, more or less visible only in basal ⅔ length; anterior angles straight without tubercles, basal angles without tubercles, only with very minute spine; disc flat on top and regularly convex on sides, slightly impressed near anterior corners, without medial line but with small round impression in front of scutellum, surface shiny, punctation of pronotum coarse bur sparse, punctures forming groups on anterolateral and posterolateral parts of disc, and two groups on sides of central impunctate area, along middle runs broad, mostly impunctate area, interspaces among punctures vary from as wide as to distinctly wider than puncture diameter (Fig. 207). Elytra 3 × as long as broad, subparallel-sided basally, feebly constricted in middle and again subparallel-sided posteriorly. Apex of elytra emarginate, with sharp sutural and lateral angles. Disc without scutellar row of punctures but with one to three additional punctures in scutellar area, with regular eigth rows in humeral part, ten rows behind middle and 12 apically; intervals 1–2 flat, interval 3 broadly but obtusely costate on whole length, interval 5 narrowly and obtusely costate on whole length, other intervals not costate apically except elevated apex of interval 8. Ventral surface shiny, hypomera mostly smooth and shiny only behind anterior coxa with group of coarse punctures; prosternum smooth and shiny, with distinct prosternal collar separated laterally from prosternal process by short and deep grooves, prosternal alae smooth and shiny, intercoxal area and expanded apex mostly smooth and shiny only with extremely fine and sparse punctures, mesoventrite smooth and shiny with fine oblique striation, metaventrite laterally with several coarse and sparse punctures, anterior process with short but deep grooves, central and posterolateral processes with transverse and oblique striation; abdomen microreticulate but shiny, ventrites I–IV with group of moderately coarse punctures on sides and fine and very sparse punctation centrally, last ventrite finely and sparsely punctate on whole surface. Legs moderately stout, not sexually dimorphic (Figs 208, 209).

Sexual dimorphism weakly manifested, males with deeply emarginate posterior margin of last ventrite; females with apex of last ventrite regularly rounded.

Host plants. According to the label data this species is associated with Arecaceae . One specimen was reared from pupa collected on Cyphokentia macrostachys Pancher ex Brongn. (Arecaceae) and the other specimen was collected on Basselinia sp.

Type material. Holotype: ♂, ‘ NEW CALEDONIA: | Mont Panie , 800– | 950 m, 1.IV.1981 [w, p, cb] || M- 304- | B [w, hw, cb] || J. L. Gressitt / Collector [w, p, cb]’ ( BPBM) . Paratypes: 1 ♀, ‘ NEW CALEDONIA: | Mont Panie, 1100– | 1200 m, 3. IV .1981 [w, p, cb] || Scaly [hw] | Basselinia [w, p, cb] || J.L. Gressitt, Coll. | BISHOP Museum | Acc. #1981.166 [w, p, cb]’ ( LS) ; 1 ♂ (with pupal skin pinned on a separate pin with identical labels), ‘ NEW CALEDONIA: | Foret de Thy , 400 m | 29. III .1981 [w, p, cb] || Collected 28. III .1981 | Emerged 29. III .1981 [w, hw, cb] || Cyphokentia | macrostachys [w, p, cb] || J.L. Gressitt, Coll. | BISHOP Museum | Acc. #1981.166 [w, p, cb]’ ( BPBM).