Cazeresia holosericea, 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.15594258
persistent identifier	https://treatment.plazi.org/id/145F7C50-4D80-562E-9EAF-35A03F428378
treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Cazeresia holosericea
status	sp. nov.

Treatment

Cazeresia holosericea sp. nov.

Figures 1 j View Figure 1 , 4 c View Figure 4 , 8 f View Figure 8 , 9 i View Figure 9 , 10 c View Figure 10

Material.

Holotype: Male (Fig. 10 c View Figure 10 ), JGZC-5478 , Poro Plateau , -21.3483 165.6932, 620 m, forest, 28.xi.2010, R. Ruta and M. Wanat leg., Holotype Cazeresia holosericea sp. nov. Gómez-Zurita & Cardoso [red label] ( MNHW) GoogleMaps . — Paratypes: MNHW: 1 male ( JGZC-5558 ), Poro Plateau , -21.34832 165.69322, 620 m, forest, night, 27.xi.2010, M. Wanat and R. Ruta leg., Paratype Cazeresia holosericea sp. nov. Gómez-Zurita & Cardoso [red label] GoogleMaps ; 1 male ( JGZC-5360 ) and 1 female ( JGZC-5479 ), Poro Plateau , -21.3483 165.6932, 620 m, forest, 28.xi.2010, R. Ruta and M. Wanat leg., Paratype Cazeresia holosericea sp. nov. Gómez-Zurita & Cardoso [red label] GoogleMaps ; 1 female, JGZC-5445 , Poro Plateau , -21.3486 165.6938, 620 m, forest, sifting, 28.xi.2010, Paratype Cazeresia holosericea sp. nov. Gómez-Zurita & Cardoso [red label] GoogleMaps .

Description.

Body elongate oval, moderately convex. Body dark reddish brown with pronotum, scutellum and most of elytra blackened depending on light incidence; palpi ochre. Length: 6.6 mm; width: 3.5 mm (range of male specimens: 6.1–6.6 mm long, 3.3–3.5 mm wide).

Frons with few small punctures anteriorly and supraocular sulci prolonged medially to middle of dorsal edge of supraantennal calli, continued as shallow furrow along inner half of dorsal edge; clypeus with few small punctures basally and anterior border deeply emarginate medially (Fig. 4 c View Figure 4 ). Eyes large and separate by 2.1 × their transverse diameter. Relative proportions of antennomeres: 2.2-1.0 - 1.7 - 2.0 - 2.3 - 2.1 - 2.5 - 2.1 - 2.2 - 2.0 - 2.4. Posterior border of pronotum furrowed with seam of small punctures mostly at sides. Prosternal process as wide as transverse diameter of procoxae. Elytra about 1.3 × as long as ensemble width at base, widest behind humeri; surface finely alutaceous, shinier than pronotum, with relatively large punctures, smaller than intervals, rather confused anteriorly on disc. Basitarsomeres enlarged, as wide as third tarsomere, shorter than second and third tarsomeres combined in pro- and mesotarsi, and as long as these in metatarsi. Median apodeme of first abdominal ventrite about half as long as ventrite, acute, narrower than mesosternal process; all ventrites with fine microreticulation, sparse fine punctures and long fine, posteriorly adpressed pale yellow setae. Penis (Fig. 9 i View Figure 9 ) slender, regularly curved ventrally, with sides slightly concave in ventral view, as wide preapically as wide at base; apex elongate elliptic, round distally with short transverse, weakly bilobate blunt tip; gonopore oval, with distal end separated from apex of penis by distance longer than maximum width of gonopore; dorsal flap subrectangular, longer than wide, covering about basal half of gonopore. — Females. Spermatheca (Fig. 1 j View Figure 1 ) with cornu shorter than nodulus, bent more or less at right angle relative to nodulus; nodulus bulbous basally, with short protruding insertion of spermathecal gland submedially, opposite to cornu; spermathecal duct fully sclerotized, thin, inserted laterally near base of nodulus, oriented opposite to cornu and recurved oriented at acute angle with nodulus, shorter than nodulus before gradual enlargement with one complete, elongate coil.

Diagnosis.

This species belongs to the group of C. thyiana (Jolivet, Verma & Mille) , characterized by relatively large size (length> 6.0 mm), wide prosternal process, as wide or wider than procoxae, clypeus deeply incised in males and elytra subparallel. Males have normal tibiae, unlike the sympatric C. tibialis sp. nov., and both males and generally females lack pubescence apically on elytra, which allow separating it from C. clipeata sp. nov., C. maquis sp. nov. and C. petitpierrei sp. nov. In principle, it is larger than C. ovata sp. nov., the only species in the group under 6.0 mm, and they are only easy to confuse with C. thyiana , although they show tiny differences in their genitalia, with sides of penis less convex around gonopore and spermatheca less bulbous basally, with relatively longer and more slender duct in C. holosericea .

Derivatio nominis.

One characteristic of the genus Cazeresia is the alutaceous texture of most teguments, particularly head, pronotum and ventral surfaces. In the case of C. holosericea sp. nov., this texture is particularly evident, and the name reflects this trait, by using the Latinization of the Greek prefix hólos -, derived from the adjective ὅλος, meaning complete, and the Latin adjective (f.), - sēricea, as suffix, meaning silky.

Distribution.

C. holosericea sp. nov. is a rather isolated species currently known from mid elevations of the Poro Plateau, near the northern coast of Grande Terre (Fig. 8 f View Figure 8 ).