Scientific name

Rodolia amabilis Kapur

Taxonomic position

Coleoptera: Coccinellidae: Coccidulinae: Noviini

Diagnosis

Length 2.88-3.18 mm, width 2.46-2.76 mm. Form subrounded, slightly narrowed towards apex in distal half, dorsum moderately convex. Prosternal process (Fig. 3) short, squat and subtrapezoidal, with long silvery white hairs. Postcoxal line (Fig. 4) complete, semicircular. Last visible abdominal segment emarginate in male (Fig. 5) and arcuate in female (Fig. 6). Can be reliably differentiated only by male genitalia (Figs.8-10) having parameres densely setose for more than three-fourths of their length. Female spermatheca (Fig. 7) as illustrated. Larva reddish or pinkish, with a fine powdery dust on dorsal side.


Figs. 1-10. Rodolia amabilis Kapur: 1. Antenna; 2. Maxilla; 3. Prosternal intercoxal process; 4. Postcoxal line on abdominal ventrite I; 5. Last abdominal ventrite, male; 6. Last abdominal ventrite, female; 7. Female spermatheca; 8-10. Male genitalia: 8. Tegmen, lateral view; 9. Tegmen, ventral view; 10. Sipho.

Images

 Adult in dorsal view
   Larva
   Pupa

Distribution

India: Andhra Pradesh; Karnataka; Kerala; Tamil Nadu; Uttar Pradesh.

Prey / Associated habitat

HEMIPTERA: Aleyrodidae: Aleurodicus dispersus Russell. Margarodidae: Icerya aegyptiaca (Douglas), Icerya purchasi Maskell, Icerya seychellarum (Westwood). Pseudococcidae: Saccharicoccus sacchari (Cockerell). Indeterminate Sternorrhyncha. Associated with Icerya infestations on sugarcane, citrus, casuarina, mandarin orange, Ficus benghalensis, Acalypha indica, and ornamental plants.

Seasonal occurrence

Active in January-March, and June-August in South India; collected during October and December in and around Bangalore.

Natural enemy

Homalotylus flaminius (Dalman) (Hymenoptera: Encyrtidae).

References

  • Kapur, A.P. 1949. On the Indian species of Rodolia Mulsant (Coleoptera: Coccinellidae). Bulletin of Entomological Research, 39: 531-538.
  • Puttarudriah, M. & Channabasavanna, G.P. 1953. Beneficial coccinellids of Mysore-I. Indian Journal of Entomology, 15: 87-96.
  • Puttarudriah, M. & Channabasavanna, G.P. 1957. Notes on some predators of mealybugs (Coccidae, Hemiptera). The Mysore Agricultural Journal, 32: 4-19.
  • Subramaniam, V.K. 1954-55. Control of the fluted scale in peninsular India. Indian Journal of Entomology, 16: 391-415, 17: 103-120.