Orthezia newcomeri Morrison

Vea, Isabelle M., 2014, Morphology of the males of seven species of Ortheziidae (Hemiptera: Coccoidea), American Museum Novitates 2014 (3812), pp. 1-36 : 20-24

Orthezia newcomeri Morrison

Figures 3C , 8

Orthezia newcomeri Morrison, 1952: 37 .

MATERIAL EXAMINED: USA, California, Sacramento , on Rubus sp., 16. v. 1963, R. E. Wilkey coll., deposited at the USNM: 1/1 ad male (in good condition) .

DIAGNOSIS: Very large body, more than 2.5 mm; large number of loculate pores on dorsal and ventral abdominal segments.

DESCRIPTION (as for family description unless otherwise stated): Mounted material: Very large, total body length 2.6 mm. Antennae exceptionally long, nearly 1.7 times total body length, most segments approximately subequal in length. lp each 11– 7 µm wide, with 4–6 loculi, present on both dorsal and ventral surfaces; smp each about 3–4 µm wide: sparsely present throughout body.

Head: Width 435 µm, length 400 µm. Dorsally, ventral arm strong, not bifurcated posteriorly; dorsal arm thinner and fading posteriorly, but with 2 short branches medially. Dorsomedial part of epicranium with (on each side) 2 or 3 hs of rather variable length (40–60 µm), all flagellate, plus 1 or 2 lp and 2 or 3 mcp. Laterally, compound eye about 160–175 µm long, with about 120 ommatidia; ocelli 30 µm wide. Ventral head setae with (on each side) 12 or 13 hs, 4–6 lp + 6–10 mcp; ventral plate with 2 long hs and 2 lp on each side. Antenna: Length 4.5 mm (ratio of total body length to antennal length 1:1.73). Scape: 150 µm long, 120 µm wide, each with 7 or 8 short hs + 1 or 2 minute pores ventrally and 4–6 hs dorsally. Pedicel: length 110–120 µm, width 70 µm; each with 4 or 5 fs, 0 or 1 hs, 2 or 3 minute pores ventrally. Segments III–IX: those proximally about 50 µm wide, apical segment only 25 µm wide: fs between 25–40 µm on all segments, becoming shorter toward apical segment. Lengths of segments (µm): III 633–638; IV 719–727; V 667–684; VI 646–656; VII 601–626 and VIII 474–481; approximate number of setae per segment: III–VIII with about 70–90 fs + 2–9 hs. Segment IX elongate: length 472–480 µm; with about 70 fs + 1 strong terminal bristle, about 25 µm long.

Thorax: Prothorax: dorsally, posttergites not identified. Pronotal setae: dorsally, 1 or 2 hs anterior propleural setae + 3 or 4 lp + about 15 minute pores anteriorly on shoulder; also with a group of posterior propleural setae and pores just anterior to each prealare, extending ventrally and joining antemesospiracular setae: 1 or 2 hs, 15 lp + about 20 smp. Ventrally, prosternum with a distinct sclerotized median ridge, with 4 hs prosternal setae + 4 lp + 5 smp on each side. Anteprosternal setae absent. Antemesospiracular setae fused with posterior propleural setae. Mesothorax: dorsally, prescutum quite large, probably rather convex, 230 µm long, 130 µm wide; distance between prescutum and scutellum medially 130 µm; scutal setae: with about 4 hs + 1 lp + 15 minute pores medially posterior to prescutum and with 1 hs near each lateral margin. Scutellum, 165 µm wide, 135 µm long; without setae but with 4 lp + 4 smp; postnotal apophyses well developed. Laterally, tegula with 2 tegular setae + 5 smp. Mesothoracic spiracle: peritreme almost round, width about 50 µm. Ventrally, basisternum 525 µm wide, 265 µm long; with 7 short hs basisternal setae, distributed more or less throughout. Metathorax: Dorsally, metatergal setae in a diffuse band of 4 hs + 6 lp + 3 smp. Dorsospiracular setae: 3 hs + 2 lp + 9 smp. Laterally, dorsal part of metapleural ridge well developed. Ventrally, metasternum sclerotized with 3 hs + 5 lp + 10 smp on each side; with 1 hs anterior metasternal setae and 1 or 2 hs posterior metasternal setae. Metathoracic spiracle: peritreme almost round, width 50 µm. Wings: Forewing 3.0 mm long, about 1.2 mm wide (ratio of length to width 1:0.39; ratio of total body length to wing length 1:1.15; with subcostal ridge extending to less than ¾ of wing length, cubital ridge starting 1/8 of wing base; with 4–6 alar setae and a line of at least 30–34 circular sensoria along posterior margin of subcostal ridge, extending almost to wing tip; hamulohalteres about 315 µm long, 38 µm wide, each with 3 apical hamuli, each 90–95 µm long. Legs: Coxae: I 205–215; II 220–240; III 225–230 µm long; coxa III with about 5 setae + 3 smp. Trochanter + femur: I 865; II 750–755; III 825–845 µm long; trochanter III with about 5 setae; femur III with about 65–70 setae (ventral ones becoming spurlike close to tibia) + 25 smp. Tibiae: I 1162 –1183; II 1021 –1059; III 1173 –1176 µm; tibia III with a total of about 100 setae, becoming spurlike on distal half to two-thirds, particular on ventral side + 13 smp; each distal spur about 40 µm long. Tarsi: I 290; II 287–300; III 282–294 µm long (ratio of length of tibia III to length of tarsus III 1:0.25); tarsus III with about 40 setae. Claws fairly long and thin, much longer than width of tarsus (each tarsus about 30 µm long), length: III 75 µm; claw digitules both short and setose.

Abdomen: Segments I–VII: lp present on both tergites and sternites, most abundant on sternites II–VI; also fairly numerous on all pleurites. Tubular ducts on a single sclerotized plate across tergite VII, each duct 15 µm wide, surrounded anteriorly by fleshy and flagellate setae of two sizes of about 10–15 and 50–65 µm long. Dorsal abdominal setae and pores (totals): segments I–V: 2–4 hs + 20–30 lp +10 smp; VI 3 hs + 22 lp somewhat fusing with the pleural lp + about 15 smp; VII about 70 fs distributed on anterior margin of tubular duct plate, 77 tubular ducts and many smp. Pleural setae: dorso- and ventropleural setae combined on each side: I–VII 4 or 5 hs + 18–25 lp + 15 smp; some setae rather long. Ventral abdominal setae mostly rather like fs, each 34–38 µm long (totals): I 2 setae; II 2 setae, 6 lp + 8 smp; III–VI about 12 setae, 15–18 lp + 15 smp; VII 21–25 setae, 5 hs, 0 lp + 0 smp. Abdominal spiracles on pleurites I–VIII, each peritreme about 10 µm wide. Segment VIII: tergite with 1 pair of hs dorsal abdominal setae, about 110 small locular pores (different from lp on rest of abdomen) and many smp; sternite with 25 ventral abdominal setae but no pores; margin rounded, with 3 hs pleural setae, 0 lp + 6 smp. Genital segment: Anus large (63 µm wide), with a lightly sclerotized area along anterior margin; with 2 hs on tergite IX; sternite IX with 10 setae. Penial sheath narrower than posterior margin of abdominal segment VIII, length without segment IX 233 µm, with segment IX 300 µm; greatest width 322 µm; ventrally and laterally with a group of 10 or 11 hs on each side of anterior end of penial sheath; posteriorly, nearer apex, without minute setae on either surface. Aedeagus of peculiar shape (uncertain if due to preparation), parallel sided anteriorly but enlarged at midlength tapering to a pointed tip which extends beyond apex of penial sheath; about 257 µm long.

COMMENTS: The specimen studied here is particularly large, generally more sclerotized and with a larger number of loculate pores compared to other Ortheziidae . Additionally, the body is covered with small sclerotized dermal structures, different from any small pores. Finally, the aedeagus shape differs from other genera, tapering at midlength and becoming pointed apically. However, this might be an artifact of slide-mount preparation.

Figures

FIGURE 3. Confocal microscope images of the last abdominal and genital segments in the males of four genera in the Ortheziidae, from specimens mounted in Canada balsam. A. Dorsal surface of Graminorthezia graminis (Tinsley), uncleared specimen. B. Lateral side of Insignorthezia insignis (Browne), cleared specimen. C. Dorsal surface of Orthezia newcomeri Morrison, cleared specimen. D. Dorsal surface of Praelongorthezia praelonga (Douglas), cleared specimen. Abbreviations: abs, abdominal spiracle; ae, aedeagus; lhs, long hair seta; lp, loculate pore; ps, penial sheath; pss, penial sheath seta; slp, small locular pores; stnVIII, sternite VIII; stnIX, sternite IX; tbd, tubular duct; tbdp, tubular duct plate. Scale: 100 µm.

FIGURE 8. Orthezia newcomeri Morrison. Adult male. A. Antennal apical seta. B. Tibiotarsal connection. C. Claw.D1. Loculate pore with four loculi. D2. Loculate pore with five loculi. D3. Loculate pore with six loculi. E. Tubular ducts with two types of peripheral setae. F. Small locular pores. G. Penial sheath.