Kozarius achronus, 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 : 22-25

Kozarius achronus , new species

Figures 1C , 4

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

TYPE: Holotype AMNH Bu-233a, alate male at the edge of a 10 × 10 × 1 mm subsquare, yellow, transparent polished amber piece, specimen in good condition, abdomen transparent, right wing truncated; accessible views: ventral and dorsal. Syninclusions in Bu-233 piece (subsequently separated) include the adult males of an undescribed Ortheziidae , buthid scorpion, and Acari. 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 epithet is from the Greek, chronos (“time”), with the alpha-privative, to mean “timeless, intemporal”, referring to the specimen being frozen in time in the amber.

DIAGNOSIS: See Kozarius perpetuus , n. sp.

DESCRIPTION: Body relatively small, total length 1.13 mm long, largest width at mesothorax, 260 μm. Head (fig. 4AB): Transverse, 280 μm wide, 125 μm long; dorsoventrally flattened. Large compound eyes present, extensively protruding laterally, 120–125 μm wide, each eye with ca. 80 ommatidia. Ocelli present laterally (fig. 4A), posterior to compound eyes. Dorsal midcranial ridge present (fig. 4B), extending full length of dorsal part of epicranium, fused with postoccipital suture. Ventral midcranial ridge short. Functional mouthparts absent, instead with a round ventral plate (fig. 4A). Antenna: 9-segmented, total length 600–640 μm; lengths of segments (in μm): scape 35–40; pedicel 40–60; flagellar segments III to X, all filiform, of subequal length; III 60–80; IV 80–90; V 75–85; VI 80–85; VII 80; VIII 60–75; IX 50–80; with 10–15 setae subequal to segment width. Apical segment bearing 3 capitate setae (fig. 4E), 2 curved bristles and ca. 10 hairlike setae of same length as other flagellar segments. Thorax: Head and thorax separated by a welldeveloped neck constriction. Prothorax well developed and membranous. Ridges, setae and pores on prothorax not observable. Prosternal ridge present, without lateral extensions. Mesothorax dorsally (fig. 4C): prescutum very elongate, bulging anteriorly, without setae; scutum without membranous area, scutellum of subrhombus shape. Ventrally (fig. 4D): basisternum 160 μm long, 160 μm wide, with a median ridge only present posteriorly. Anterior part of basisternum shorter than posterior part. Wings (fig. 1C): Forewings oval with an intermediate width at base, apex rounded; 845 μm long, 90 μm widest; subcostal ridge extending from base of wing to a little more than ¾ wing length. Cubital ridge and posterior flexing patch present. Alar setae, sensoria, and microtrichia absent. Alar fold present. Hamulohalteres present, long and narrow, 90 μm long, with two hamuli. Legs: Long and slender, cuticular reticulations absent. Prolegs: coxa triangular, 55 μm long; trochanter and femur about 27 μm wide, together 200 μm long, with hairlike setae, tibia 105 μm long, 16 μm wide, with hairlike setae becoming spinelike ventrally, tibial spurs undifferentiated; tarsus 1-segmented (fig. 4F), 40 μm long, 14 μm wide, tarsal digitules present and finely clavate; claw thin, 20 μm long, claw digitules or denticles not observed. Abdomen: Broad (370 μm long without genital segment; 200 μm widest). Tergites and sternites well developed, mostly membranous, segmentation easy to delineate. Abdominal setae not observed despite abdominal transparency. No pore detected except for tubular ducts. Tergite VI and VII, each with a row of ca. 10 tubular ducts. Genital segment: Penial sheath extremely elongate (about 255 μm long), about 1/5 body length, 60 μm widest, proximally and distally enlarged and medially narrow; aedeagus slender and pointed at apex. Eversible endophallus absent.

Family Margarodidae Cockerell, 1899

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 4. Details of Kozarius achronus, n. sp. (A) Ventral view of head. (B) Dorsal view of head. (C) Dorsal view of mesothorax. (D) Basisternum. (E) Apical antennal segments. (F) Leg from tibia. (G) Dorsal view of posterior abdominal segments and penial sheath, with wax filaments.