Microlithosia Daniel, 1954

Ranjan, Rahul, 2017, A new species of Microlithosia Daniel, 1954 from India (Lepidoptera, Erebidae, Arctiinae), Zootaxa 4319 (2), pp. 383-385 : 384-385

Key to the species of Microlithosia Daniel The key presented below is based on male genital attributes so, M. johara Bucsek is not included due to its unknown male.

1 Valvae with basal saccular process reduced to a knob like structure (in M. pseudodecreta ) or a small triangular process (in remaining three species of the group); vesica with group/series of prominent/small spines ............................................................ 2

- Valvae with basal saccular process prominent; vesica lacking cornuti ............................................................................................. 5

2 Vesica with series of small spines .................................................................................................... M. champhaiensis Singh &Kirti

- Vesica with single or two groups of prominent spines ...................................................................................................................... 3

3 Vesica with single group of large spines; cucullus tapering, forming a triangular apex ............................ M. pseudodecreta Bucsek

- Vesica with two groups of large spines; cucullus simple, apex rounded........................................................................................... 4

4 One group of cornuti is well formed, another represented by a prominent curved spine .................................... M. decreta (Butler)

- Both the groups of cornuti are well formed, with three small spines at apex of vesica ................ M. jagbiri Singh & Joshi , sp. nov.

5 Valvae with apex of cucullus constricted and angular ............................................................................. M. umbripuncta de Joannis

- Valvae with apex of cucullus rounded............................................................................................................................................... 6

6 Both sacculi with two strong teeth at curving place; basal process of sacculus asymmetrical ........................................................... ........................................................................................................................................ M. nanlingica Dubatolov, Kishida & Wang

- Right sacculus bifurcated (with single teeth), left sacculus without any apical spine, but bears a row of small spines at base; basal process of sacculus symmetrical ........................................................................................................................ M. shaowuica Daniel