The genus Ivalia Jacoby 1887 (Coleoptera: Chrysomelidae: Galerucinae: Alticini) of the mount Kinabalu, Sabah, Malaysia

Abstract

Abstract:The following new species of Ivalia Jacoby 1887 are described from the mount

Molecular phylogeny of moss‐inhabiting flea beetles from the Chabria group (Coleoptera: Chrysomelidae: Alticini) reveals multiple colonizations and radiations in Taiwan

“…A more detailed study of this radiation is in progress. The Philippine origin of this clade corresponds to the fact that the members of the I. uenoi complex are very similar to the species from the Philippines and Borneo (Takizawa & Konstantinov, 2018; Damaška et al ., 2020). In a broader biogeographic context, the origin of the Ivalia lineages in Taiwan could be linked to the wider Philippines + Sundaland area (see the Discussion section).…”

“…A typical example of a diverse but understudied group of flightless beetles are leaf‐litter‐inhabiting and moss‐inhabiting flea beetles (Coleoptera: Chrysomelidae: Alticini). A number of studies during the past few decades (Konstantinov & Konstantinova, 2011; Konstantinov et al ., 2013; Konstantinov et al ., 2014; Damaška & Konstantinov, 2016; Takizawa & Konstantinov, 2018; Linzmeier & Konstantinov, 2020) revealed a giant undescribed diversity of flea beetles inhabiting moss‐cushions and leaf litter around the world, especially in mountain areas. Moss‐inhabiting flea beetles usually share some of the following characters: (i) reduction or loss of wings, leading to reductions of meso‐ and metathoracic structures and metendosternite; (ii) compact body shape; (iii) round and convex body; (iv) antennae tending to form a club; (v) small body size.…”

Moss-inhabiting flea beetles in the Philippines (Coleoptera, Chrysomelidae, Alticinae)

“…5). This is e.g., the case of Cangshanaltica Konstantinov et al, 2013, Mniophila Stephens, 1831, Borinken Konstantinov et al, 2011, Mniophilosoma Wollaston, 1854 In Ivalia, antennae can be long and filiform (e.g., in I. caligulata, I. besar, I. biasa or I. kinabalensis) or more less thickened apically (e.g., I. uenoi, I. korakundah, I. lescheni and I. iridescens) (Duckett et al 2006, Nadein 2013, Takizawa and Konstantinov 2018. Ivalia antennata described above has antennal club even more developed, with shortened antennomeres on its basal part, unlike any other Ivalia known at the moment.…”

“…Large proportions of its species diversity are known from Papua New Guinea and from the Himalayan range (Nadein 2013). A bunch of species was recently described from Borneo (Takizawa and Konstantinov 2018) and two species are described from Taiwan. No species has been recorded from the Philippines.…”

“…The species lacks some characters typical for the majority of Ivalia species, especially the round body shape and the metatibiae curved laterally. However, there are species assigned to Ivalia which are externally similar to this species, e.g., I. biasa Takizawa & Konstantinov, 2018, I. besar Takizawa & Konstantinov, 2018, I. fulvomaculata Takizawa & Konstantinov, 2018and I. kinabalensis Takizawa & Konstantinov, 2018. The new species can be separated from these four species by aedeagus strongly widening towards the apex and having a pointed apex (all mentioned species have aedeagus slender or less widened towards the apex, and the aedeagus apex is dull).…”