Ovaticoccus haigi Miller and 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 : 132-137

Ovaticoccus haigi Miller and Stocks sp. n.

Type material: Adult female holotype with right label “No. 68C13-24 Cal. Dept. Agr. / Loc. Hwy. 99, 3 mi. S. of / Merced, California / March 12, 1968 / ex. Distichlis / spicata, T.R. Haig coll.” Left label “ Ovaticoccus / haigi Miller / HOLOTYPE / Det. by / CDFA / III-68 EAS B.” Label on the back of the slide “ Ovaticoccus haigi / Miller & Stocks / HOLOTYPE / CDFA / Merced.” The holotype is deposited in CDFA. Paratypes: UNITED STATES: California: Alameda Co.: SE of Livermore, X-10-1968, on D. spicata, T. Kono and T.C. Fuller (2 ad. ♀♀ paratypes, on 2 slides) CDFA (1 slide), UCD (1 slide); Fresno Co. : 4.5 mi. N. El Nido, VIII-20-1968, on D. spicata, T.R. Haig (3 ad. ♀♀ paratypes, 2 second-instar ♀♀ paratypes on 3 slides) CDFA (1 slide), UCD (1 slide), USNM (1 slide); Merced Co. : 4 mi. NW Los Banos, on Henry Miller Road , III-20-1968, on D. spicata, T.R. Haig (4 ad. ♀♀ paratypes on 4 slides) CDFA (1 slide), FSCA (1 slide), UNAM (1 slide), USNM (1 slide); 3 mi. S. Merced on Highway 99, III-12-1968, on D. spicata, T.R. Haig (1 ad. ♀ holotype, 19 ad. ♀♀ paratypes on 20 slides) NHM (1 slide), CDFA (8 slides), FSCA (1 slide), NMNH (1 slide), UCD (4 slides), USNM (5 slides); Mono Co. , Chalfant, VII-6-1970, D. spicata, D.R. Miller (2 ad. ♀♀, 2 first-instar nymph paratypes on 2 slides) UCD (1 slide), USNM (1 slide) .

Etymology: This species is named in honor of the late Tom R. Haig, formerly of the California Department of Food and Agriculture, Sacramento, California, USA, who collected many interesting species of scale insects.

Adult female ( Fig. 68 )

Description: Holotype, slide mounted, 3.2 mm long, 1.8 mm wide (paratypes 2.1–3.4 mm long, 1.3–1.9 mm wide). Body elongate oval, without protruding anal lobes. Anal-lobe areas dorsally each with 4 and 5 flagellate setae (paratypes 3 or 4), 0 and 1 microtubular duct (paratypes 0 or 1), 1 cruciform pore (paratypes 0 or 1) and 3 or 4 5-locular pores (paratypes 0–4); body apex bent so that anal-lobe structures normally found on venter now located on dorsum.

Dorsum with flagellate setae scattered over entire surface, shorter than those on venter, straight or slightly curved. Enlarged setae on lateral margin of head, with 2 on 1 side and 3 on other (paratypes with 0–3 on each side); largest seta 10 μm long (paratypes 10–13 μm); enlarged setae conical, laterally with nearly straight sides, with truncate apices; setal base broad; not in dermal pocket; segment IV with 18 setae, all flagellate (paratypes with 17–20 flagellate setae). Macrotubular ducts scattered over entire surface, least abundant on anterior thorax and head, each about 24 μm long (paratypes 23–28 μm). Microtubular ducts each approximately 5 μm long (paratypes 5–6 μm), area farthest from dermal orifice sclerotized and divided into 2 parts, apical portion rounded, about equal in size to remaining sclerotized portion, dermal orifice slightly sclerotized, without protruding duct. Microtubular ducts scattered over entire surface, most abundant on posterior part of abdomen. Multilocular pores scattered over entire surface, of 3 or 4 kinds: 7-locular pores, 6-locular pores, and 3-locular pores rare; 5-locular pores abundant. Cruciform pores in lateral clusters from head to segment VII, least abundant on thorax. Microtrichia on segments VII and VIII.

Anal ring dorsal (bent around abdominal apex on some paratypes, rarely ventral), semicircular, incomplete, divided posteriorly, non-cellular, with 3 setae on each side of ring (paratypes sometimes with 2), each shorter than greatest diameter of ring; anal tube unsclerotized; anal opening sclerotized; without anal flap.

Venter with longest flagellate seta on segment II 30 μm long (paratypes 28–40 μm), on segment VII 38 μm long (paratypes 35–43 μm); longest anal-lobe seta 105 μm long (paratypes 83–115 μm). Enlarged setae of same type as on dorsum near lateral margin of thorax. Macrotubular ducts scattered over entire surface, least abundant anteriorly. Microtubular ducts near body margin, absent from head. Multilocular pores of same types and relative numbers as on dorsum, scattered over entire surface, most abundant posteriorly, unusually numerous near body margin. Cruciform pores on marginal and submarginal areas of head to segment VI (paratypes head to segment V or VI). Legs with hind coxae each dorsally with 46 and 61 pores (paratypes 20–72 pores), ventrally with 22 and 29 pores (paratypes with 19–35 pores); ventral pores on derm anterior to coxa; each femur with 4 setae, including 1 proximal seta and 3 distal setae; each tibia with 4 setae, without middle seta; hind tibia/tarsus 0.7 (paratypes 0.7– 0.8). Antennae each 6-segmented (of 44 antennae examined, all but 1 is 6-segmented although many have segment 3 partially divided), 168 and 170 μm long (paratypes 163–190 μm). Frontal lobes absent. Preantennal pore present. Microtrichia on mesothorax to segment VIII (paratypes with microtrichia from prothorax to segment VIII), and on ventral surface of each coxa .

Notes: The description is based on 32 specimens from five localities. The adult female of Ov. haigi is similar to the adult female of Ov. adoxus in having similar anal ring structure, few small conical enlarged setae, dorsal and ventral cruciform pores and multilocular pores, and four setae on each femur. They differ as follows (character states in brackets are those of Ov. haigi ): with numerous cruciform pores on dorsum of segment VIII (absent or few); pores absent from anterior to hind coxa (present).

Second-instar female ( Fig. 69 )

Description: Slide-mounted specimen 1.2 mm long, 0.7 mm wide. Body elongate oval, without protruding anal lobes. Anal-lobe areas dorsally each with 2 or 3 flagellate setae; ventrally each with 2 or 3 flagellate setae including anal-lobe seta, and 1 or 2 5-locular pores.

Dorsum with flagellate setae arranged in 3 pairs of longitudinal lines (medial, mediolateral and lateral), medial lines on each segment with 1 or rarely 2 setae on each side, mediolateral lines with 2 setae on each side, and lateral lines with 1 or 2 setae on each side. Enlarged setae in longitudinal line along body margin, 1 specimen without mediolateral enlarged setae, second specimen with 4 mediolateral setae on each side of body on mesothorax posteriorly to segment II; largest setae 9–10 μm long; enlarged setae conical, laterally with nearly straight sides, with truncate apices; setal base broad; not in dermal pocket; with 10 or 12 setae on segment IV including 2 enlarged setae and 8 or 10 flagellate setae; segment IV with combined total of 1 or 2 enlarged setae dorsally and ventrally. Macrotubular ducts absent. Microtubular ducts each approximately 5 μm long, with area farthest from dermal orifice sclerotized and divided into 2 parts, apical portion about same size as remaining sclerotized portion; dermal orifice unsclerotized; uncommon, most abundant along body margin. Multilocular pores scattered over entire surface, all of 5-locular kind only. Cruciform pores near body margin and on submargin of abdomen. Microtrichia on segments VII and VIII.

Anal ring dorsal, semicircular, incomplete, divided posteriorly, non-cellular, with 0–3 setae on each side of ring, each shorter than greatest diameter of ring; anal tube sclerotized; anal opening sclerotized; with anal flap.

Venter with longest flagellate seta on segment II 22–25 μm long, on segment VII 21–22 μm long; anal-lobe seta 82–88 μm long. Enlarged setae absent. Macrotubular ducts absent. Microtubular ducts near body margin of thorax and abdomen. Multilocular pores scattered over entire surface, of 5-locular type only. Cruciform pores near body margin. Legs with hind coxae each with 2 or 3 pores on ventral surface and 0 or 1 on dorsal surface; each femur with 4 setae, 1 proximal seta and 3 distal setae; each tibia with 4 setae, without middle seta. Antennae each 6-segmented, 128–138 μm long. Frontal lobes absent. Preantennal pore present. Microtrichia on prothorax to segment VIII, and on ventral surface of mid- and hind- pairs of coxae.

Notes: This description is based on two specimens from one locality. The second-instar female of Ov. haigi is most similar to the second-instar female of Ov. adoxus in having similar anal ring structure, few small conical enlarged setae, dorsal and ventral cruciform pores and multilocular pores, and four setae on each femur. They differ as follows (characters in brackets are those of Ov. haigi ): with cruciform pores restricted to dorsum of abdominal segment VIII and rarely VII (scattered over body).

First-instar nymph ( Fig. 70 )

Description: Slide-mounted specimen 0.8 mm long, 0.4 mm wide. Body elongate oval, without protruding anal lobes. Anal-lobe areas dorsally each with 2 flagellate setae, 0 or 1 microtubular ducts; ventrally each with 3 or 4 flagellate setae including suranal seta and anal-lobe seta.

Dorsum with flagellate setae arranged in 2 pairs of longitudinal lines (medial and mediolateral). Enlarged setae in lateral longitudinal line from head to segment VII, replaced by flagellate setae on some thoracic segments, also in mediolateral areas of posterior thoracic and anterior abdominal segments, 1 specimen without mediolateral line of setae on 1 side of body; with 15–17 enlarged setae on each side of body; largest setae each about 10 μm long; enlarged setae conical, laterally with nearly straight sides, with truncate apices; setal base broad; not in dermal pocket; with 6 setae on segment IV, including 2–4 enlarged setae and 2–4 flagellate setae; segment IV with combined total of 2–4 enlarged setae dorsally and ventrally. Macrotubular ducts absent. Microtubular ducts each approximately 3 μm long, with area farthest from dermal orifice sclerotized and divided into 2 parts, apical portion rounded, slightly smaller than remaining sclerotized portion; dermal orifice unsclerotized; present in mediolateral areas, absent from head. Multilocular and cruciform pores absent. Microtrichia on segments VII and VIII.

Anal ring dorsal, semicircular, incomplete, divided posteriorly, non-cellular, with 1 or 3 setae on each side of ring, each shorter than greatest diameter of ring; anal tube and anal opening unsclerotized.

Venter with longest flagellate seta on segment II 16 μm long, on segment VII 17 μm long; anal-lobe seta 87 and 100 μm long. Enlarged setae absent. Macrotubular ducts and microtubular ducts absent. Multilocular pores in small numbers over surface, of 2 kinds: 5-locular pores restricted to area laterad to spiracles and in medial area of head; 3-locular pores on head near mouthparts, on thorax near base of each pair of legs, and on abdomen with 2 near mediolateral setae on segments II, VII and VIII. Cruciform pores absent. Legs without pores; each femur with 4 setae, including 1 proximally and 3 distally; each tibia with 4 setae, without middle seta; hind tibia/tarsus 0.7. Antennae each 6-segmented, 101–103 μm long. Frontal lobes absent. Preantennal pore present. Microtrichia in medial area of metathorax and abdomen.

Notes: This description is based on two specimens from one locality. The first-instar nymph of Ov. haigi is most similar to the first-instar nymph of Ov. neglectus in lacking a dorsomedial line of enlarged setae, and having enlarged setae conical, anal ring without pores and reduced, and with a mediolateral longitudinal line of enlarged setae. They differ by having (character states in brackets are those of Ov. haigi ): each femur with three setae, without a proximal seta (four setae including a proximal seta); mediolateral longitudinal line of enlarged setae complete (mediolateral longitudinal line of enlarged setae absent from head and anterior of thorax).

Figures

FIGURE 68. Ovaticoccus haigi Miller and Stocks sp. n., adult female, 3 miles S. of Merced, Highway. 99, Merced Co., California, USA, March 12, 1968, on Distichlis spicata, T.R. Haig. A=enlarged seta; C=7-locular pore; D=5-locular pore; F=microtubular duct; G=macrotubular duct; H=cruciform pore; I=anal ring; K=dorsal surface of coxa.

FIGURE 69.Ovaticoccus haigi Miller andStocks sp. n., second-instar female, 4.5miles N. ElNido, Fresno Co., California,USA, August 20, 1968, on Distichlis spicata, T.R. Haig.A=enlarged seta; B=slightly enlarged seta; D=5-locular pore; F=microtubular duct; H=cruciform pore; I=anal ring; L=claw; Q=dorsal surface of coxa.

FIGURE 70. Ovaticoccus haigi Miller and Stocks sp. n., first-instar nymph, Chalfant, Mono Co., California, USA, July 6, 1970, Distichlis spicata, D.R. Miller. A=enlarged seta; B=slightly enlarged seta; D=5-locular pore; E=3-locular pore; F=microtubular duct; I=anal ring; J=antenna.