Ischalia

Young, Daniel K., 2011, A new Asian subgenus and species of Ischalia (Coleoptera: Ischaliidae) with an assessment of subgeneric concepts, revised world checklist, and keys to the subgenera and “ blue elytra ” species, Zootaxa 2811, pp. 53-58 : 57

Key to the “Blue Elytra” Species of Ischalia

Satô (2002a) described two new Ischalia from Southeast Asia, provided notes on three others, and provided a key to the five species that shared the character attribute of “blue elytra.” With the addition of two species, a new key is presented here.

1 Pronotum yellowish-orange............................................................................ 2

- Pronotum dark brown with metallic blue luster, or shining black................................................ 3

2 Head yellowish-orange; antennomeres 9–11 whitish; pronotum with lateral margins conspicuously rounded......................................................................................... Ischalia (Ischalia) bryanti Blair

- Head bluish-black; antennomeres 1–11 bluish-black; pronotum trapezoidal in outline... Ischalia (Ischalia) yasuakii M. Satô

3 Pronotum shining, black....................................... Ischalia (Nitidischalia) barclayi subgen. et sp. nov.

- Pronotum dark brown with metallic blue luster.............................................................. 4

4 Antennomeres 1–11 black..................................................... Ischalia (Ischalia) atricornis Pic

- Antennomeres 9–11 or 10–11 whitish...................................................................... 5

5 Antennae moniliform........................................................ Ischalia (Ischalia) zetteli M. Satô

- Antennae filiform.................................................................................... 6

6 Antennomeres 9–11 whitish................................................. Ischalia (Ischalia) indigacea Pascoe

- Antennomeres 10–11 whitish................................................. Ischalia (Ischalia) caerulea Telnov