Kozarius perpetuus, Vea & Grimaldi, 2015

Vea, Isabelle M. & Grimaldi, David A., 2015, Diverse new scale insects (Hemiptera: Coccoidea) in amber from the Cretaceous and Eocene with a phylogenetic framework for fossil Coccoidea, American Museum Novitates 2015 (3823), pp. 1-80 : 20-21

Kozarius perpetuus , new species

Figures 1B , 3

TYPE LOCALITY: Myanmar: Kachin: near Tanai Village .Albian-Cenomanian boundary .

TYPE: Holotype AMNH Bu-1163, alate male, in a 5 × 3 × 0.5 mm yellow, transparent, polished amber piece with several large air bubbles and a crack; specimen in good condition with wings completely spread, tubular wax projections visible; accessible views: ventral and dorsal. Myanmar, Kachin, Tanai Village, on Ledo Road, 105 km NW Myitkyna), Leeward Capitol Corp coll., deposited in the American Museum of Natural History.

ETYMOLOGY: The species epithet is the Latin perpetuus , meaning “continual, continuing without interruption”.

DIAGNOSIS: Kozarius perpetuus , n. sp., differs from K. achronus , n. sp., by the former having the following characters: antenna 10-segmented (vs. 9-segmented); ocelli absent (vs. present), head without dorsal median ridge (vs. present); basisternal median ridge completely developed and strong (vs. developed only on posterior half of basisternum); penial sheath longer and thinner, 1/3 body length (vs. 1/5).

DESCRIPTION: Body relatively small, total length 1.02 mm, greatest width at mesothorax, 200 μm. Head (fig. 3AB): Transverse; dorsoventrally flattened; width including eyes (245 μm) twice as long as head length (109 μm); with a pair of compound eyes extensively protruding laterally, each eye 105 μm long with 80–90 ommatidia. Ocelli absent. Dorsal midcranial ridge absent. Ventral plate round. Antenna (fig. 3E): 10-segmented, total length 480–535 μm; lengths of segments (in μm): scape 35–43; pedicel 50; flagellar segments III to X, all filiform, subequal in length; III 54–62; IV 46–53; V 43–46; VI 48–55; VII 50–65; VIII 55–70; IX 40–50; X 45–55. Setae longer than segment width (10–30 μm). Segment X (apical) bearing 3 capitate setae, 2 curved bristles and ca. 10 hairlike setae of same length as setae of other flagellar segments. Thorax: Head and thorax separated by a strongly constricted neck (fig. 1B). Prothorax membranous. Ridges on prothorax not observable. Prosternal ridge present, without lateral extensions. Dorsally: prescutum oval but longitudinally elongate (75 μm long, 65 μm wide), bulging anteriorly, without prescutal setae; scutum without membranous area; scutellum rhombus shaped; mesopostnotum almost as long as scutellum (fig. 3C). Ventrally: basisternum 112 μm long, 120 μm wide, with a strong median ridge, with setae dicernable, anterior part of basisternum shorter than posterior part (fig. 3D). Wings (fig. 1B): Both forewings well preserved, oval shaped with at wide base, and round apex; 660 μm long, 305 μm at widest section; subcostal ridge extending from base of wing to a little more than 3/4 wing length. Cubital ridge and posterior flexing patch present. Alar setae, sensoria, and microtrichia absent. Alar fold present. Hamulohaltere present, narrow, about 60 μm long; with two hamuli. Legs (fig. 3F): Long and slender, cuticular reticulations absent; coxa triangular, coxa length 55 μm long; trochanter and femur 20 μm wide, 160 μm combined length on proleg, with hairlike setae; tibia 148 μm long, 15 μm wide, with hairlike setae becoming spurlike ventrally; tarsus 1-segmented, 60 μm long,13 μm wide, tibial spurs undifferentiated but tarsal digitule present; claw thin, 25 μm long, almost uncurved, claw digitule and denticle absent. Abdomen: Elongate and narrow, ca. 70 μm at widest section, length without genital segment ca. 210 μm. Tergites and sternites well developed, segmentation easy to delineate. Abdominal setae not visible. Pores not detected except for tubular ducts. Tergite VI and VII with each a row of 7 or 8 tubular ducts (tubular ducts not easily observable but wax filaments allow the count of tubular ducts). Genital segment (fig. 3G): Penial sheath extremely elongate (455 μm long), 1/3 the body length, 35 μm wide. Aedeagus slender, pointed at apex as long as penial sheath. Eversible endophallus absent.

Figures

FIGURE 1. Photomicrographs of (A) Dorsal view of Pseudoweitschatus audebertis, n. sp., holotype AMNH Bu-1416. (B) Ventral view of Kozarius perpetuus, n. sp., holotype AMNH Bu-1163. (C) Ventral view of K. achronus, n. sp., holotype AMNH Bu-233a.

FIGURE 3. Details of Kozarius perpetuus, n. sp. (A) Dorsal head. (B) Ventral view of head. (C) Dorsal view of mesothorax. (D) Basisternum. (E) Antenna. (F) Leg. (G) Side view of penial sheath.