Cangshanaltica javana, Damaška & Ruan & Fikáček, 2022

Damaška, Albert František, Ruan, Yongying & Fikáček, Martin, 2022, The genus Cangshanaltica (Coleoptera: Chrysomelidae: Alticinae): overview, new species, and notes on species complexes, Zootaxa 5219 (1), pp. 49-64 : 55-56

Cangshanaltica javana sp. nov.

Fig.s 5 , 8D

Type locality: Indonesia, Java Barat, Gunung Tangkuban Perahu .

Type material. HOLOTYPE (male, MHNG): (1) INDONESIE — East Java 30 km N. Bandung, volcan Tangkuban Prahu, J. Robert 10.VIII.85 . ◉ Paratypes (1 male MHNG, 1 male NMPC) same labels as holotype; (2 female MHNG, 1 female NMPC) : JAVA Volcan Tangkuban Prahu env 30 km N. Bandung J. Robert 7. VIII. 84 .

Differential diagnosis. The species can be easily distinguished from all known species by its genitalic morphology (median lobe of aedeagus pointed with sharp parallel margins on dorsal side, spermathecal duct long, U shaped). Additionally, the species can be distinguished by the key below.

Description.

Habitus. Body ovate, convex, 2.4 mm long, 1.7 mm wide, 1.1 mm high. Dorsal surfaces dark blackish-brown without metallic luster. Ventral side brown.

Head. Nearly hypognathous. Labrum light brown, deeply incised; clypeus black. Labial and maxillary palpi light brown. Frons wide, brown, flat, frontal ridge absent. Suprafrontal sulcus well-developed, frontal calli feebly projecting, flat, feebly delimited posteriorly. Orbit narrow, orbital and supraorbital sulci deep. Vertex very finely punctured with shallow scattered punctures. Antennae reaching basal ¼ of elytra. Antennomeres I–IV and XI light yellowish-brown, antennomeres V–X brown. Antennomeres V–XI gradually widening, flat.

Thorax. Pronotum wide, convex, punctured with small scattered punctures. Anterior pronotal margins feebly projecting anteriorly, but forming lobes. Anterolateral pronotal setiferous pore placed in the middle of lateral pronotal margin. Elytra convex, about ¼ wider than maximal width of pronotum, irregularly punctured with distinct punctures twice as large as those on pronotum. Epipleura extremely widened in basal parts of elytra, nearly as wide as half of pronotal width. Procoxal cavity widely open posteriorly. Anterior metaventral process completely covering the mesoventrite between mesocoxae, as a deeply excavated “horseshoe-like” structure. Legs light brown, metafemora darkened. Metatibiae slightly curved laterally, with a long apical spine. Metatarsomere I elongated.

Abdomen. Abdominal ventrite I as long as ventrites II and III combined. Anterior process of abdominal ventrite I reaching space between metacoxae, bulbose, forming a ventrally projecting elevated ridge.

Genitalia. Median lobe of aedeagus long, slender, pointed apically, slightly curved in lateral view. Dorsal side of median lobe of aedeagus with sharp parallel margins narrowing in the middle, ventral side not narrowed. Spermathecal pump as long as receptacle, with digitiform apical part; receptacle twice as wide as pump, almost parallel-sided. Spermathecal duct long, U-shaped, reaching the apical 1/3 of the receptacle.

Etymology. The species is named after the island of Java, where the type series was collected.

Figures

FIGURE 5. Cangshanaltica javana. A—dorsal view; B—lateral view; C—ventral view, D—median lobe of aedeagus from dorsal view; E—median lobe of aedeagus from lateral view, F—median lobe of aedeagus from ventral view; G—spermatheca.

FIGURE 8. Lateral margin of pronotum with the setiferous pore placed almost in the middle—a diagnostic character shared by all known Cangshanaltica species (marked by white arrow in every picture): A—C. castanea; B—C. fuanensis; C—C. guanxiensis; D—C. javana; E—C. luzonica; F—C. marginata; G—C. mindanaoensis; H—C. nigra; I—C. siamensis; J—C. sprynari;, K—C. sp. from Taiwan similar to C. ogatai; L—Ivalia viridipennis with the setiferous pore placed in the apical part of pronotal margin.