Isopedhispa latemarginata, 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 : 35-38

Isopedhispa latemarginata sp. nov.

(Figs 117–126, 228)

Etymology. Named after broadly explanate lateral margin of elytra.

Type locality. New Caledonia, Mt. Paniè , Eastern trail, 900–1300 m a.s.l.

Diagnosis. Isopedhispa latemarginata sp. nov. with I. costata sp. nov. are the only species with body mostly black and pronotum coarsely and densely punctate on almost entire dorsal surface and sides of pronotum not or very shallowly concave behind anterolateral projections while Isopedhispa cocotis ( Maulik, 1933) and Isopedhispa ferruginea Spaeth, 1936 have dorsum from ferrugineous to brown, pronotum with large impunctate areas and sides of pronotum behind anterolateral projections distinctly concave. Isopedhispa latemarginata and I. costata at first glance appear similar but I. latemarginata differs in smaller size of body with length 6.60–9.50 mm (vs. 11.45–12.95 mm in I. costata ), elytra with explanate margin from ferrugineous to ferrugineous-brown ( I. costata has elytra uniformly black including explanate margin), and elytra less costate with only interval 7 is elevated behind middle and interval 9 more or less elevated on anterior half (in I. costata elytra are more costate with elytral interval 5 costate on whole length, interval 7 costate behind the middle, and interval 9 costate in anterior half).

Description. Length 6.60–9.50 mm, width 2.20–3.35 mm.

Head, pronotum, antennae and legs black. Elytra mostly black, explanate margin ferrugineous to ferrugineousbrown, in pale specimens also apex of elytra partly ferrugineous-brown (Figs 117, 118). Thorax black. Abdomen mostly black, ventrites laterally with ferrugineous-brown patches of diffused borders. 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 transverse 1.7–1.8 × as wide as long, interocular plate rectangular, convex but dorsal surface almost flat, separated from vertex by deep sulcus, anterior corners of interocular plate forming sharp denticles, lateral and anterior margins not margined with sulcus. Surface of interocular plate coarsely and densely punctate, appears rugose, with narrow medial sulcus along whole length; interantennal process short, approximately as long as 1/5 length of antennomere I, not sexually dimorphic, flattened laterally, keel-shaped, acute apically, without sulcus dorsally (Fig. 121). Frontoclypeus moderately elongate, 1.2–1.3 × as long as broad (including interantennal process), acute apically, central plate margined laterally with deep sulci, anterior corners forming straight angles, surface on basal half with moderately coarse setose punctures, in area close to anterior angles flat, impunctate or with 1–2 moderately coarse punctures, along middle runs narrow median keel (Fig. 120). Antennae 0.33–0.34 × as long as body, slightly compressed apically; antennomere I large, approximately 1.5 × as long as broad; antennomere II short, 1.5 × as long as broad, approximately 0.5–0.6 × as long as I; antennomeres III–VII elongate, 1.3–1.4 × as long as II; antennomeres 8–10 slightly longer than II; antennomere XI 1.6 × as long as X, subangulate apically (Fig. 119). Pronotum 1.1–1.2 × as broad as long, subpentagonal, in anterolateral parts with small projections, sides behind projections not or only shallowly concave, diverging posteriorly, anterior margin strongly convex, basal margin bisinuate; sharp lateral margins forming narrow explanation along whole length, interrupted only by narrow emargination in front of basal tubercles, anterior angles obtuse with small and obtuse to angulate anterior tubercles, basal angles bearing small, sharp tooth (Fig. 122); disc on sides regularly convex, top flattened, without impressions or with shallow round impression in front of scutellum and two round to transverse, shallow impressions in middle of pronotum, without medial sulcus, whole surface with coarse and dense punctures, interspaces narrower than puncture diameter but surface appears regular. Elytra 2.20–2.25 × as long as broad, subparallel basally and broadened posteriorly, widest somewhat behind middle, along sides with broad, impunctate explanation. Apex of elytra regularly rounded, with indistinct sutural angle and broadly rounded lateral angle. Disc with 6–8 punctures in scutellar row; eigth rows in posthumeral part, ten rows behind middle and ten rows apically but lateral interspaces apically with several additional irregular punctures thus regularity of rows partly disturbed; intervals 1–4 flat, as wide as or slightly wider than rows, interval 5 not or indistinctly elevated, interval 7 in posterior half obtusely elevated and humeral interval elevated in anterior half, intervals 3, 5, 7, 9 obtusely elevated on slope. Ventral surfaces mostly shiny, hypomera coarsely but moderately densely punctate; prosternal alae shiny, with a few coarse punctures, prosternal process between coxae as wide as ¼ width of coxa, expanded apex not impressed, finely and sparsely punctate, anterior margin of prosternum elevated, separated from prosternal process by sulcus, mesoventrite mostly smooth and shiny with indistinct oblique striation, metaventrite laterally coarsely and densely punctate, posterolateral part and anterior process with fine longitudinal and oblique striation; abdomen mostly smooth and shiny with very fine pricks. Legs stout, sexually dimorphic (Figs 123–126).

Sexual dimorphism distinct, in males ventral side of mid femora in middle with angulation, mid tibiae before apex curved and enlarged inner margin prolongate into sharp denticle, inner margin deeply emarginate in middle, apex with distinct spine (Fig. 126), last ventrite deeply emarginate; in females mid femora on ventral side without angulation, mid tibiae stout, straight, regularly broadened from base to ⅔ length, with ventral side almost straight (Fig. 125), apex with minute spine, last ventrite regularly shallowly emarginate apically.

Host plant. According to the label data specimens were collected on Freycinetia sp. ( Pandanaceae ).

Type material. Holotype: ♂ ‘ NEW CALEDONIA (N) | -20.5702 / 164.7739 | Mt. Paniè E trail | 900-1300 m rainforest | 23.11.2010 | leg. R. Ruta, M. Wanat [w, p, cb]’ ( WMNH) . Paratypes: 2 ♂♂, 1 ♀, ‘ NEW CALEDO- NIA (N) | -20.5886 / 164.7702 | Mt. Paniè E trail | 1350-1629 m | 24.11.2010 rainforest | leg. R. Ruta, M. Wanat [w, p, cb]’ ( WMNH) ; 4 ♂♂, ‘ NEW CALEDONIA (N) | 20°33’S / 164°46’E 1300 m | Mt. Paniè humid forest | night beating near refuge hut | 2.02.2004 leg. M. Wanat [w, p, cb]’ ( LS, WMNH) ; 1 ♀, ‘ NEW CALEDONIA (N)

| 20°33’S / 164°46’E | Mt. Paniè 1200-1300 m | humid montane forest | 3.02.2004 leg. M. Wanat [w, p, cb]’ ( WMNH) ; 4 ♂♂, 3 ♀♀, ‘ NEW CALEDONIA: | Mt. Panie , 1000- | 1200 m, 3 IV 1981 [w, p, cb] || Freycinetia [w, p, cb] || J.L. Gressitt Coll. | BISHOP Museum | Acc. #1981.166 [w, p, cb]’ ( BPBM, LS) ; 1 ♂, 1 ♀, ‘ NEW CALEDONIA: | Mt. Panie , 900- | 1100 m, 2 IV 1981 [w, p, cb] || Freycinetia [w, p, cb] || J.L. Gressitt, G.M. | Mc Pherson , Colls. | BISHOP Museum | Acc. #1981.166 [w, p, cb]’ ( BPBM) ; 4 ♂♂, ‘ NEW CALEDONIA: | Mt. Panie , 800- | 950 m, 1 IV 1981 [w, p, cb] || Freycinetia [w, p, cb] || J.L. Gressitt Coll. | BISHOP Museum | Acc. #1981.166 [w, p, cb]’ ( BPBM, LS) ; 5 ♂♂, 2 ♀♀, ‘ NEW CALEDONIA: | Mt. Panie , 1450- | 1638 m, 4 IV 1981 [w, p, cb] || Freycinetia [w, p, cb] || J.L. Gressitt Coll. | BISHOP Museum | Acc. #1981.166 [w, p, cb]’ ( BPBM, LS) ; 2 ♂♂, 1 ♀, ‘ NEW CALEDONIA: | Mt. Panie , 530-550 | m, 30 III 1981 [w, p, cb] || Freycinetia [w, p, cb] || J.L. Gressitt Coll. | BISHOP Museum | Acc. #1981.166 [w, p, cb]’ ( BPBM) ; 10 ♂♂, 5 ♀♀, ‘ NEW CALEDONIA | Mt Paniè, 1300-1600 m | 15 May, 1984, G. Monteith & D. Cook [w, p, cb]’ ( LS, QMBA) ; 5 ♂♂, 3 ♀♀, ‘ NEW CALEDONIA | 20°34’S × 164°46’E | MtPanie refuge 1300m | 8-9Nov2001. C.Burwell | hand collecting. 8765 [w, p, cb]’ ( LS, QMBA) ; 15 ♂♂, 9 ♀♀, ‘ NEW

CALEDONIA | 20°34’S × 164°46’E | MtPanie refuge 1300m | 16-18Nov2000. Bouchard | Burwell & Monteith 9938 [w, p, cb]’ ( LS, MNHN, NMPC, QMBA) ; 1 ♂, ‘ NEW CALEDONIA: | Rivirere Bleue , 200 m | 25-27.III.1981 [w,

p, cb] || Freycinetia [w, p, cb] || J.L. Gressitt Coll. | BISHOP Museum | Acc. #1981.166 [w, p, cb]’ ( BPBM).