Intybia Pascoe 1866
Creators: name: Ikeda, Hiroshi
name: Yoshitomi, Hiroyuki
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Melyridae
Intybia

description: Genus Intybia Pascoe, 1866
Intybia Pascoe, 1866: 448 [
type species: Intybia guttata Pascoe, 1866].
Notes
The genus Intybia belongs to the tribe Apalochrini of the subfamily Malachiinae together with the related genera Laius and Dicranolaius (Champion, 1921). The genus Intybia is characterized as follows: elytra with yellowish to reddish fascia or maculation in most species (vs fully black with bluish luster in Laius); antennomere II short; antennomere III in male modified; simple protarsus and protibia in male (vs two tarsal combs in protarsi V in Dicranolaius); front legs slender (vs male protibia of Laius thickened basally and inside of basal area distinctly hollow); aedeagal apex round in Japanese species (vs concave in most Laius species); endophallic structure composed of 1–3 sclerites (gonoporal piece, semi-gonoporal piece, ligula, and 0–2 spinous plate(s)) (Evers 1994; Asano & Kawashima 2010; Asano 2015).
Gender
Feminine.
Key to the Japanese species of the genus Intybia
1. Elytra with fascia, but sometimes fascia divided into two spots by suture; distributed in Hokkaido to Ryukyu ……………………………………………………………………………………………2
– Elytra with four spots;distributed in Ryukyu (Yonaguni-jima)……………………… I.donan sp. nov.
2. Elytral fascia widened at suture (Figs 1 D–G; 2D–G) ……………………………………………… 3
– Elytral fascia narrowed at suture, or divided into two spots by suture (Figs 1A, B, H; 2 A–B, H)..6
3. Fore legs fully yellow; head wide, about 0.5–0.9 in HL/HW; eyes prominent; endophallus with spinous plate (Figs 8 B–C, 9D–F) …………………………………………………………………………… 4
– Fore legs fully black; head narrow, about 0.9–1.2 in HL/HW; eyes not prominent; spinous plate absent (Figs8D, 9G)………………………………………………………………… I.kishiii (Nakane,1955)
4. Body oval; femur black; endophallus with one spinous plate (Figs 8C, 9 E–F)…………… 5
– Body elongate; femur yellow; endophallus with two spinous plates (Figs 8B, 9D)………………… …………………………………………………………………… I. pelegrini pelegrini (Pic, 1910)
5. Elytral fascia clearly widened at suture; body black; male antennomere III broad bean-like shaped; female apterous…………………………………………………………… I. niponica (Lewis, 1895)
– Elytral fascia slightly widened at suture; body black with bluish luster; male antennomere III heartlike shaped; female hind wing present ……………………………… I. takaraensis (Nakane, 1955)
6. Fore legs fully yellow; elytra with a yellow or divided into two spots by suture ………………………7
– Fore legs fully black; elytra with a fascia ……… I. tsushimensis (Satô & Ohbayashi, 1968)
7. Elytral fascia varies in development (Fig. 3), sometimes interrupted by suture; antennae yellow; male antennomere III fusiform, with an oval funnel-shaped on the outer edge, with a twisted projection near base; male frons yellow in apical half ……………………… I. histrio (Kiesenwetter, 1874)
– Elytral fascia interrupted by suture; antennomeres V–XI infuscate; male antennomere III ear-like shaped; male frons fully black ……………………………………… I. kawasakii (Nakane, 1956)
description: Published as part of Ikeda, Hiroshi & Yoshitomi, Hiroyuki, 2017, Revision of the genus Intybia (Coleoptera, Malachiidae) from Japan, pp. 1-31 in European Journal of Taxonomy 331 on pages 3-4, DOI: 10.5852/ejt.2017.331, http://zenodo.org/record/3829776