Ovaticoccus sanguineus (Miller) Miller & Stocks, 2022

Miller, Douglass R. & Stocks, Ian C., 2022, New genera and species of felt scales (Hemiptera: Coccomorpha: Eriococcidae), with descriptions of new species and immature instars of described species, Zootaxa 5221 (1), pp. 1-213 : 159-162

Ovaticoccus sanguineus (Miller) comb. n.

Oregmopyga sanguinea Miller in Miller and McKenzie 1967: 503–505.

Etymology: The species epithet “ sanguinea ” is based on the Latin word “ sangui ” meaning “blood” and refers to the blood red color of the alcohol preservative in which specimens are stored.

The justification for treating Oregmopyga as a junior synonym of Ovaticoccus , leading to this new combination, is provided in the “Notes” section that follows the generic description above. The adult female of this species was described in detail by Miller and McKenzie (1967) and information from that paper is not repeated here.

Second-instar female ( Fig. 82 )

Description: Slide-mounted specimens 1.3–1.4 mm long, 0.7–0.8 mm wide. Body elongate oval, with slightly protruding anal lobes. Anal-lobe areas dorsally each with 3 flagellate setae, 2 multilocular pores, 1 microtubular ducts; ventrally each with 3 or 4 flagellate setae including suranal seta and elongate anal-lobe seta, with 0 or 1 multilocular pore.

Dorsum with flagellate setae arranged in 2 or 3 pairs of longitudinal lines (medial, mediolateral and lateral), some flagellate setae replaced by enlarged setae or transitional setae making lines of enlarged and flagellate setae indefinite. Enlarged setae erratically forming 3 pairs of longitudinal lines (medial, mediolateral and lateral), of 1 size; largest seta 10–11 μm long; enlarged setae pear-shaped or conical, laterally with slightly curved margins, lon ger than wide, with thin, rounded apex; setal base thin; usually in dermal pockets; segment IV with 11 or 12 setae, including 5 or 6 enlarged setae and 6 or 7 flagellate setae; segment IV with combined total of 5 or 6 enlarged setae dorsally and ventrally. Macrotubular ducts absent. Microtubular ducts 7–8 μm long, with area farthest from dermal orifice sclerotized and divided into 2 parts, apical portion rounded or bilobular depending on visual angle, about same length as remaining sclerotized portion; total sclerotized area same length as, or longer than, unsclerotized area; dermal orifice weakly sclerotized, with protruding flattened tube. Microtubular ducts over entire surface, associated with enlarged setae. Multilocular pores all of 5-locular kind, in segmental rows from head to segment VIII. Cruciform pores absent or uncommon in lateral areas of thorax. Microtrichia absent.

Anal ring ventral, divided into 2 lateral plates bridged by weak sclerotization anteriorly, incomplete posteriorly, non-cellular, with 3 setae on each side of ring, each about same length as greatest diameter of ring; with additional pair of setae associated with ring but not touching it; anal tube and anal orifice sclerotized, with anal flap.

Venter with longest flagellate seta on segment II 21–30 μm long, on segment VII 19–21 μm long; anal-lobe seta 155–167 μm long. Enlarged setae absent. Macrotubular ducts absent. Microtubular ducts present laterally. Multilocular pores of 2 kinds: 5-locular pores most abundant, 3-locular pores rare, in segmental rows over surface. Cruciform pores uncommon in lateral areas on thorax and abdomen. Legs with hind coxae with 2–5 indistinct pores; each femur with 5 setae including 2 proximal setae and 3 distal setae; each tibia with 4 distal setae, without middle seta; hind tibia/tarsus 0.7–0.8. Antennae each 6-segmented, 137–145 μm long. Frontal lobes absent. Preantennal pore present. Microtrichia from head to segment VIII, also on hind 2 pairs of coxae.

Notes: The description is based on two specimens from one locality. The second-instar female of Ov. sanguineus is most similar to the second-instar female of Ov. neglectus in having dorsal multilocular pores, a non-cellular anal ring, and 3 pairs of longitudinal lines of enlarged setae on the abdomen. They differ as follows (character states in brackets are of Ov. sanguineus ): each femur with three setae, all distal (five setae including two proximal and three distal); without ventral cruciform pores (with ventral cruciform pores near body margin).

Figures

FIGURE 82. Ovaticoccus sanguineus (Miller 1967), second-instar female, Thousand Palms Canyon, Riverside Co., California, USA, April 16, 1965, on Haplopappus acradenius, D.R. Miller. A=enlarged seta; B=slightly enlarged seta; D=5-locular pore; E=3-locular pore; F=microtubular duct; H=cruciform pore; I=anal ring; N=flagellate seta; Q=dorsal surface of coxa.