Chilecoccus Miller & González, 1976

Hodgson, Chris & Miller, Dug, 2010, A Review of the Eriococcid Genera (Hemiptera: Sternorrhyncha: Coccoidea) of South America 2459, Zootaxa 2459 (1), pp. 1-101 : 40

Chilecoccus Miller & González

Chileoccus Miller & González, 1975: 132.

Type species: Chilecoccus browni Miller & González 1975: 132–134 .

Generic diagnosis. Adult female ( Fig. 17 ). On undersides of leaves. Body approximately round, widest across metathorax, more pointed posteriorly. Dorsum. Derm membranous, segmentation indefinite. Setae small, spinose, rather randomly abundant over surface. Macro- and microtubular ducts abundant. Loculate pores absent. Anal lobes usually ventral, flattened, heavily sclerotised, not protruding, each with 3 or 4 setae and 1 or 2 loculate pores. Anus usually lying ventrally, with an unusually broad sclerotised area surrounding opening containing setae and pores. Margin. Marginal setae of same size as adjacent spinose setae. Venter. Derm membranous. Setae on abdomen spinose except those in medial areas of head and thorax hairlike; spinose setae fairly abundant especially submarginally, where slightly smaller than those on dorsum. Macro- and microtubular ducts in submarginal and marginal areas, about same size as those on dorsum. Loculate pores usually with 5 loculi, arranged in distinct pattern, forming longitudinal line in submedial area of abdomen, several present medially on thorax, rare or absent from head. Cruciform pores absent. Antenna 6 segmented. Presence of frontal lobes uncertain, possibly absent; antennal tubercles absent. Labium probably 1 segmented. Legs each well-developed; metacoxa swollen, with numerous large pores on each surface, without microspinules; claw digitules equal in size and longer than claw. Vulva between segments VII and VIII.

Known only from Nothofagaceae .

Comment: Chilecoccus currently contains 2 species (the type species, C. browni , and C. spinosus Miller & González ), both known only from Chile, neither of which are thought to induce galls. For a description of the adult female of C. browni , see Miller & González, 1975, p. 132.

Adult female Chilecoccus are characterised by: (i) flattened form of anal lobes; (ii) abundant small spinose setae on dorsum and submarginally on venter; (iii) presence of macrotubular ducts on both dorsum and venter; (iv) unusually large anal ring with 2 or 3 rows of pores; and (v) 3 segmented labium.

Figures

FIGURE 17. Chilecoccus browni Miller & González. Adult female, where B = dorsal microtubular duct; D = dorsal macrotubular duct; F = view of anal ring and anal lobe area with suranal seta; J = ventral setae; K = ventral microtubular duct; L = ventral loculate pore; M = ventral macrotubular duct; R = marginal spinose seta; W = claw of prothoracic leg, and Z = coxa and femur of metathoracic leg (modified after Miller & González, 1975).