Chilocorus hauseri Weise

(Figs 32, 33)

Chilocorus hauseri Weise, 1895a: 135 .

Chilocorus hauseri: Sicard 1913: 500; Korschefsky 1932: 243; Liu 1963: 77; Nagaraja & Hussainy 1967: 250; Pang & Mao 1979: 82; Hoáng 1983: 21; Cao et al. 1992: 156; Pang et al. 2002: 318, 2004: 28; Poorani 2002: 311; Kovář 2007: 593; Ren et al. 2009: 130; Li et al. 2018: 14.

Diagnosis. Length: 4.20–4.45 mm; width: 3.70–4.08 mm. Form elongate oval, elytra distinctly narrowed towards apex in posterior half; dorsum strongly convex and glabrous (Fig. 32a–c). Head and pronotum black. Elytra ochreous yellow or reddish brown, lateral margins with black borders, almost twice as broad as those of C. circumdatus, about 2/10 th of elytral width. Abdominal postcoxal lines incomplete (Fig. 32d). Male genitalia (Fig. 32e–h) and spermatheca (Fig. 32i) as illustrated.

Life stages. Life stages (Fig. 33) as illustrated.

Distribution. India: Restricted to eastern Himalayan region (Sikkim; West Bengal) and parts of north-eastern region (Manipur). Myanmar. China. Laos. Vietnam.

Prey/associated habitat. Hemiptera: Diaspididae: Aonidiella aurantii (Maskell), Aonidiella orientalis (Newstead), and Chrysomphalus aonidum (Linnaeus) infesting mulberry, rose and citrus. Collected on tea (label data). Devi (1989) and Shantibala & Singh (1991) reported it as feeding on an aphid, Aphis odinae (van der Goot) [= Toxoptera odinae (van der Goot) infesting Wendlandia glabrata ( Rubiaceae)], from an altitude of 150–500 m from Manipur and Nagaland in north-eastern India.

Seasonal occurrence. Collected during July and September-October in eastern India (label data).

Notes. More illustrations / details can be found in the following works: Nagaraja & Hussainy 1967; Ren et al. 2009.