Genyocerus serratus (Schedl)

Beaver, R. A. & L. - Y, 2007, A review of the genus Genyocerus Motschulsky (Coleoptera: Curculionidae: Platypodinae), with new synonyms and keys to species, Zootaxa 1576 (1), pp. 25-56 : 40

Genyocerus serratus (Schedl)

( Figs 32–34 )

Diapus serratus Schedl, 1936: 17 .

Diacavus serratus (Schedl) : Schedl, 1939: 364.

Genyocerus serratus (Schedl) : Beaver & Browne, 1979: 618.

Taxonomy: The species was described in the genus Diapus but transferred to Diacavus by Schedl (1939). It resembles G.talurae but can be distinguished by the characters given in the keys.

Distribution: East Malaysia ( Sarawak), West Malaysia. The species is newly recorded here from Brunei Darussalam and East Malaysia (Sabah).

New Records: BRUNEI, 115 o 7'E, 4 o 34'N, Kuala Belalong FSC, Dipterocarp forest , 270m, Aerial malaise, 16.vi.1991 (N. Mawdsley) (1 ♀) ; as previous except: Ground F[light] I[ntercept] T[rap], 17.vi.1991 (1 ♀) ; 220m, Aerial FIT, 16.vii.1991 (1 ♀ ; 210m, Ground malaise, 8.ii.1992 (1 ♂)(all BMNH) . MALAYSIA, Sabah, Sipitang, Mendolong , 1.xii.1987 (S. Adebratt) (9 ♂, 6 ♀) ; as previous except various dates from 29.iv.1988 – 11.v.1988 (10 ♂, 6 ♀) (ZMLU, RAB).

Biology: The species has been recorded from species of Dipterocarpus , Dryobalanops , Hopea , Parashorea , Shorea and Vatica (all Dipterocarpaceae ) ( Browne 1961a, b; Beaver & Browne 1979). The gallery system is described by Browne (1961a), who suggests that the life cycle in West Malaysia spans 5–6 weeks.

Figures

PLATE 10. FIGURE 32. Genyocerus serratus (Schedl) dorsal view of male. FIGURE 33. Genyocerus serratus (Schedl) dorsal view of head and pronotum of female. FIGURE 34. Genyocerus serratus (Schedl) lateral view of head of female.