Scientific name

Priscibrumus uropygialis (Mulsant) (=Exochomus uropygialis, Brumus uropygialis)

Taxonomic position

Coleoptera: Coccinellidae: Chilocorinae: Chilocorini

Diagnosis

Length 3.80-4.30 mm, width 2.82-3.00 mm. Very similar to E. lituratus in general appearance and coloration. Head, pronotum, and scutellum black. Elytra yellowish testaceous to reddish brown, with a small, black apical patch. Ventral side black, except elytral epipleura yellowish brown. Male genitalia (Figs) and life stages as illustrated.

Images

Distribution

India: Himachal Pradesh, Jammu & Kashmir, Sikkim, Uttar Pradesh, West Bengal; Pakistan; Nepal; Bhutan. Widely distributed in coniferous forests between 1800 and 2750 min northwestern India and Pakistan.

Prey / Associated habitat

HEMIPTERA: Aphidoidea: Adelges spp., Aphis gossypii Glover, Aphis sp. (cf. Gossypii Glover), Brachycaudus helichrysi (Kaltenbach), Brachycaudus sp., Ceruraphis sp., Cinara sp., Dreyfusia (as Adelges) knucheli (Schneider-Orelli & Schneider), Eriosoma lanigerum (Hausmann), Mindarus japonicus Takahashi, Myzus ornatus Laing, Myzus persicae (Sulzer), Myzus sp., Pemphigus sp., Pineus sp. Diaspididae: Diaspidiotus perniciosus (Comstock), Salicicola sp. Psyllidae: indeterminate psyllids. Commonly associated with adelgids infesting silver fir and other coniferous trees in the northwestern region. Collected on potato.

Seasonal occurrence

Active during March-June. Collected during July-August and November.

Natural enemy

Dinocampus coccinellae (Schrank).

Remarks

Priscibrumus lituratus and P. uropygialis belong to a complex of very similar species. Based on cytological studies on populations from India and Pakistan, Smith (1965) supposed that in the group lituratus, certainly, and in the group uropygialis, probably, five cytogenetically different (?sibling) species occurred together, some of them differing only in subtle physiological properties expressed in somewhat different ecological suitabilities.

References

  • Nagarkatti, S. & Ghani, M.A. 1972. Ecology and biology of predators. Coleoptera: Coccinellidae, pp.58-88. In: Studies on predators of Adelges spp. in the Himalayas (Eds. V.P. Rao & M.A. Ghani). Miscellaneous Publication No. 3, Commonwealth Institute of Biological Control, Indian Station.
  • Miyatake, M. 1985. Coccinellidae collected by the Hokkaido University Expedition to Nepal Himalaya, 1968 (Coleoptera). Insecta Matsumurana (New Series) 30: 1-33.
  • Smith, S.G. 1965. Cytological species separation in Asiatic Exochomus(Coleoptera: Coccinellidae). Canadian Journal of Genetics and Cytology 7: 363-373.