Chilocorini, Mulsant, 1846

POORANI, J., 2023, An illustrated guide to the lady beetles (Coleoptera: Coccinellidae) of the Indian Subcontinent. Part II. Tribe Chilocorini, Zootaxa 5378 (1), pp. 1-108 : 7

Key to genera of Chilocorini of the Indian subcontinent

1. Meso- and metatibiae with a pair of apical spurs. Spermatheca somewhat pear shaped, cornu without a terminal appendage ( Fig. 3s, w ).............................................................................................. 2

– Meso- and metatibiae without apical spurs. Spermatheca more robust with a shorter cornu, cornu with a terminal appendage ( Fig. 3t )............................................................................................. 5

2. Antenna with 8 antennomeres ( Fig. 3h ). Elytra yellow with three black stripes ( Fig. 2c, d ). Tarsal claws simple ( Fig. 3u )......................................................................................... Brumoides Chapin

– Antenna with 10 antennomeres ( Fig. 3i, j ). Elytral pattern variable. Tarsal claws usually appendiculate ( Fig. 3v ).......... 3

3. Clypeal margin of head medially excised and truncate ( Fig. 3b ). Abdominal postcoxal line apically strongly recurved and incomplete ( Fig. 3n ). Adult dark bluish violet, lateral sides of pronotum yellow-orange ( Fig. 2e )............ Curinus Mulsant

– Clypeal margin of head medially not excised ( Fig. 3a, c ), emarginate or truncate. Abdominal postcoxal line complete ( Fig. 3m ) or incomplete ( Fig. 3l ). Adult coloration different............................................................ 4

4. Dorsum glabrous or pubescent. Base of pronotum and elytra not contiguous all along their length... Parexochomus Barovsky

– Dorsum always distinctly pubescent ( Fig. 2g, i ). Base of pronotum and elytra contiguous all along their length................................................................................................ Priscibrumus Kovář

5. Antenna with 7–8 antennomeres ( Fig. 3g ). Clypeus without a median projection. Widely distributed...... Chilocorus Leach

– Antenna with 10 antennomeres. Clypeus with a distinct horn-like median projection in male, a wide, raised median ridge in female. Distributed in north-eastern India, China.............................................. Renius Li & Wang

Figures

FIGURE 2. Tribe Chilocorini: a. Chilocorus circumdatus (Gyllenhal); b. Chilocorus nigrita (Fabricius); c. Brumoides lineatus (Weise); d. Brumoides suturalis (Fabricius); e. Curinus coeruleus (Mulsant); f. Chilocorus politus Mulsant; g. Priscibrumus uropygialis (Mulsant); h. Renius cornutus Li & Wang; i. Priscibrumus lituratus (Gorham).

FIGURE 3. Diagnostic characters of Chilocorini: a–c. head: a. Chilocorus; b. Curinus; c. Brumoides; d–f. maxilla: d. Brumoides; e. Parexochomus; f. Chilocorus; g–j. antenna: g. Chilocorus; h. Brumoides; i. Parexochomus; j. Curinus; k. prosternum in Chilocorus; l–n. abdominal postcoxal line: l. Chilocorus; m. Brumoides; n. Curinus; o, p. legs with angulate tibia; q. coxite, Chilocorus; r. coxite, Brumoides; s. spermatheca, Brumoides; t. spermatheca, Chilocorus; u, v. tarsal claws: u. simple (Brumoides); v. appendiculate (Chilocorus); w. female genitalia.