Drepanococcus Williams & Watson, 1990

Choi, Jinyeong, Soysouvanh, Pheophanh, Lee, Seunghwan & Hong, Ki-Jeong, 2018, Review of the family Coccidae (Hemiptera: Coccomorpha) in Laos, Zootaxa 4460 (1), pp. 1-62 : 8

Genus Drepanococcus Williams & Watson, 1990

Type species: Eriochiton cajani Maskell, 1891a , by original designation.

Diagnosis. Anal cleft short, about 1/9 of body length. Dorsum with anal plates each with conical inner margin setae and apical setae ( Figs 3E , 5D ); dorsal setae absent; and tubular ducts absent. Marginal setae conical ( Figs 3B , 5I ); stigmatic clefts absent, each with a single stigmatic spine ( Figs 2D , 3A , 4D , 5I ). Venter with multilocular discpores each with 10 loculi ( Figs 3G , 5E ); tubular ducts of 1 or 2 types present over entire surface ( Figs 3H , 5G ); antenna 7 or 8 segmented ( Figs 2C , 4C ); legs without tibio-tarsal articulatory scleroses ( Fig. 3F ) ( Williams & Watson 1990; Hodgson 1994).

Remarks. Drepanococcus contains 4 species, mostly distributed on South-East Asia ( García Morales et al., 2016). Adult females of the genus are completely covered with a test of granular glassy wax in life. In slidemounted material, this genus is easily recognized by the single and long stigmatic spine opposite each spiracle ( Williams & Watson 1990).

Figures

FIGURE 2. Drepanococcus cajani (Maskell, 1891). A, population of females in life; B, slide-mounted adult female; C, antenna; D, stigmatic spine. Scale lines for B = 0.5 mm; C = 100 µm; D = 50 µm.

FIGURE 3. Drepanococcus cajani (Maskell, 1891), adult female, from Hodgson (1994). A, stigmatic spine; B1-2, marginal setae; C1-3, dorsal microducts; D, preopercular pore; E, anal plates; F, leg; G, multilocular disc-pore; H1-2, ventral tubular ducts; I, ventral microduct; J, spiracular disc-pore.

FIGURE 4. Drepanococcus chiton (Green, 1909). A, adult female in life; B, slide-mounted adult female; C, antenna; D, stigmatic spine. Scale lines for B = 0.5 mm; C = 100 µm; D = 50 µm.

FIGURE 5. Drepanococcus chiton (Green, 1909), adult female, from Williams & Watson (1990). A, dorsal microduct; B, simple pore; C, preopercular pores; D, anal plates; E. multilocular disc-pore; F. anterior and lateral marginal setae on anogenital fold; G, ventral tubular duct; H, spiracular disc-pore; I, stigmatic spine (broken) and marginal setae; J, ventral microduct.