Cazeresia imperiosa, Gómez-Zurita & Cardoso, 2025

Gómez-Zurita, Jesús & Cardoso, Anabela, 2025, Systematics and evolution of the New Caledonian endemic genus Cazeresia (Coleoptera: Chrysomelidae, Eumolpinae), Arthropod Systematics & Phylogeny 83, pp. 127-170 : 127-170

publication ID	https://doi.org/10.3897/asp.83.e143543
publication LSID	lsid:zoobank.org:pub:9FC2F5B4-97ED-4E25-9ECF-7F670BB36DA5
DOI	https://doi.org/10.5281/zenodo.15595946
persistent identifier	https://treatment.plazi.org/id/D296C523-C58E-5161-9B03-2794A396EF00
treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Cazeresia imperiosa
status	sp. nov.

Treatment

Cazeresia imperiosa sp. nov.

Figures 1 p View Figure 1 , 8 c View Figure 8 , 9 c View Figure 9

Material. Holotype:

Male, JGZC-5356 , Humboldt (S track), Col du Vulcain (refuge) , -21.90319 166.38305, 980 m, night beating, 9.xi.2008, M. Wanat leg., Holotype Cazeresia imperiosa sp. nov. Gómez-Zurita and Cardoso [red label] ( MNHW) GoogleMaps . — Paratypes: JGZC: 1 male ( JGZC-5456 ) and 1 female ( JGZC-5391 ), Humboldt (S track), Col du Vulcain (refuge) , -21.90319 166.38305, 980 m, night beating, 9.xi.2008, M. Wanat leg., Paratype Cazeresia imperiosa sp. nov. Gómez-Zurita & Cardoso [red label] GoogleMaps . MNHN: 2 specimens, Mt. Humboldt , 11.ii.2005, P. Jolivet leg. ; 1 specimen, Mt. Humboldt , 12.ii.2005, P. Jolivet leg. MNHW: 13 males and 23 females (four with: JGZC-5454 , JGZC-5455 , JGZC-5481 and JGZC-5482 ), Humboldt (S track), Col du Vulcain (refuge) , -21.90319 166.38305, 980 m, night beating, 9.xi.2008, M. Wanat leg., Paratype Cazeresia imperiosa sp. nov. Gómez-Zurita & Cardoso [red label] GoogleMaps .

Other material examined.

MNHW: 2 males (one with: JGZC-5362 ), Mt. Do , -21.75585 166.00099, 900–1025 m, maquis and forest edge, 6.xi.2008, M. Wanat leg., Cazeresia imperiosa Gómez-Zurita & Cardoso GoogleMaps ; 1 male, Mt. Do , -21.76674 166.00540, 820–920 m, roadside, night beating, 6.xi.2008, M. Wanat leg., Cazeresia imperiosa Gómez-Zurita & Cardoso GoogleMaps ; 1 female, Mt. Do , -21.7606 165.9996, 850 m, subsummit forest, at light, 2.xi.2010, M Wanat and R. Ruta leg., Cazeresia imperiosa Gómez-Zurita & Cardoso GoogleMaps ; 1 male and 1 female, Mt. Do , -21.7574 166.0015, 850–950 m, night beating, 2.xi.2010, R. Ruta and M. Wanat leg., Cazeresia imperiosa Gómez-Zurita & Cardoso GoogleMaps ; 1 female, Mt. Do , -21.7574 166.0015, 850–950 m, day beating, 3.xi.2010, R. Ruta and M. Wanat leg., Cazeresia imperiosa Gómez-Zurita & Cardoso GoogleMaps .

Description.

Body elongate elliptic, moderately convex. Mandibles, head, pronotum, hypomera and prosternum very dark matt brown, almost black; scutellum, elytra and ventral surfaces very dark glossier reddish brown; labrum, antennae and legs, including coxae, dark reddish brown; apex of last antennomere and palpi ochre. Length: 6.7 mm; width: 3.6 mm (range of male specimens: 6.6–7.8 mm long, 3.5–4.1 mm wide).

Frons with few small punctures medially and supraocular sulci prolonged medially to outer third of dorsal edge of supraantennal calli; clypeus with few small punctures basally and anterior border moderately emarginate. Eyes separate on frons by more than 2.4 × their transverse diameter. Relative proportions of antennomeres: 2.0-1.0 - 1.8 - 2.1 - 2.6 - 2. 5-2.9 - 2.7 - 2.7 - 2.6 - 2.8. Microreticulation of pronotum only slightly finer and more superficial than on frons, with scattered fine punctures also behind eyes, interspersed with very subtle micropunctures. Prosternal process about 0.7 × as wide as transverse diameter of procoxae. Elytra about 1.3 × as long as ensemble width at base, slightly enlarged behind humeri, with sides weakly curved, widest at middle and gradually tapering in apical half to slightly dorsally compressed round apex; surface finely alutaceous, shinier than pronotum, with relatively large punctures, smaller than intervals, rather confused anteriorly on disc; last interval weakly convex. Basitarsomeres slightly narrower than third tarsomere, shorter than second and third tarsomeres combined in all tarsi. Median apodeme of first abdominal ventrite slightly less than half as long as ventrite, arched, narrower than mesosternal process; all ventrites with fine microreticulation, sparse fine punctures and long fine, posteriorly adpressed pale yellow setae, rather uniform on first ventrite. Penis (Fig. 9 c View Figure 9 ) slender, curved ventrally at base and nearly straight, flattened dorsoventrally at apex, perpendicular to base, with sides slightly concave in ventral view, slightly wider preapically than at base; apex elongate oval, arched distally with acute median point blunt at apex; gonopore elongate elliptical, with distal end acute and separated from apex of penis by distance about as long as maximum width of gonopore; dorsal flap subtrapezoidal, longer than wide, covering about basal half of gonopore. — Females. Spermatheca (Fig. 1 p View Figure 1 ) shaped as question mark, with cornu shorter than nodulus, blunt at apex and bent more or less at right angle relative to nodulus; nodulus sinuous, bulbous and enlarged basally, with short protruding insertion of spermathecal gland submedially, opposite to cornu; spermathecal duct thin, inserted laterally near base of nodulus, oriented perpendicularly to plane of spermatheca, and slightly curved, thinner and sclerotized near body of spermatheca and slightly enlarged and less sclerotized distally from spermatheca, with incomplete elongate coil.

Diagnosis.

In this species, the sides of elytra are weakly curved and they are widest around middle, a trait only shared with C. montana Jolivet, Verma & Mille and C. robusta sp. nov. However, C. imperiosa sp. nov. can be easily separated from the other two despite their similar size, colour and potential distribution because this species has strong humeral calli, making the overall shape of elytra very different from the other species.

Note.

See notes on C. montana . The type series of the generic type species includes some specimens of this species.

Derivatio nominis.

The name for this species is the Latin adjective (f.), imperiōsa, meaning powerful, mighty, since it is amongst the largest species of the genus.

Distribution.

The species is found in high elevations (above 850 m a. s. l.) of two separate peaks in the south of Grande Terre: Mt. Humboldt and Mt. Do (Fig. 8 c View Figure 8 ).