Criniverticillus longicumulus Lin & Yao & Ren 2018, sp. nov.
Creators: name: Lin, Shan
name: Yao, Yunzhi
name: Ren, Dong
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Weitschatidae
Criniverticillus
Criniverticillus longicumulus

description: Criniverticillus longicumulus Lin, Yao & Ren sp. nov.
(Fig 1 and 2)
http://zoobank.org/urn:lsid:zoobank.org:act:5858E5C9-5433-4C97-9DB7-0E861B6DB24C
Type material. Holotype: CNU-COC-MA2018001 (Key Lab of Insect Evolution and Environmental Changes, College of Life Sciences, Capital Normal University, Beijing, China), macropterous male in a 7 × 7 × 2 mm block of yellow, transparent, polished amber; specimen in good condition, with complete body and almost unbroken antenna, both wings well spread, tubular wax projections visible; accessible views: dorsal and ventral.
Diagnosis. Setae on flagellar segments of antenna long, longest 3–4 times as long as corresponding segment width (Fig. 2F); penial sheath triangular and short.
Description. Body large and robust (Fig 1A and 1B), 1960 μm long, with greatest width at mesothorax, 560 μm.
Head (Fig. 2A) transversely oval, dorsoventrally flattened, 440 μm wide, 255 μm long. Compound eyes hemispherical, bulging laterally, each about 175 μm in diameter and with more than 100 ommatidia. Ocelli located dorsad to compound eyes. Midcranial ridge well-developed on dorsal surface and fused with a bent and strongly sclerotized postoccipital ridge, forming a reversed T-shaped structure. Ventral surface of head (Fig. 2B) with ridges forming an irregularly five-armed star, consisting of midcranial, preocular and preoral ridges; no setae observed.
Antenna (Fig. 2F) 10 segmented and especially long, longer than body length, total length 2360–2400 μm; flagellar segments III to X all filiform, most segments irregularly binodose. Lengths of segments (in μm): scape 85–90; pedicel 70–75; III 185–190; IV 260–265; V 280–290; VI 255–260; VII 290–300; VIII 275–280; IX 285– 300; X 305. Ratio of maximal width to minimal width of segments: scape 3.08; pedicel 1.33; III 2.0; IV 2.0; V 3.7; VI 2.0; VII 2.4; VIII 2.4; IX 3.3; X 3.3. All flagellar segments covered with long setae (each 170–240 μm long), most of them forming whorls each of 5–15 setae, with a few shorter setae (each 110–150 μm long) present mainly between whorls. Apical segment with short ‘curved bristles’ (Fig. 2G) and 4 very short basiconic sensilla (Fig. 2H). Capitate setae absent.
Thorax separated from head by a weak neck constriction. Prothorax slightly sclerotized on part of edge and center of dorsal surface, with some small setae on dorsum and a slender medial ridge on venter. Structures of mesothorax well developed and strongly sclerotized. Dorsally (Fig. 2A): prescutum transversely oval (ca. 305 μm wide, 195 μm long); scutum solid without any membranous area (410 μm at its longest and 560 μm at its widest); scutellum subtriangular (ca. 230 μm at its longest, 400 μm at its widest), anterior angle almost a right angle; mesopostnotum short (400 μm wide and 90 μm long) and only slightly overlapped by metanotum (410 μm wide and 190 μm long). Ventrally (Fig. 2B): basisternum hexagonal, 430 μm long, 410 μm at its widest, with a complete margin, without a longitudinal medial ridge. Metathorax represented by a large transverse tergite, but sternite indistinct.
Forewings (Fig. 2I) each oval, broad at base, with slightly tapering apex, 1950 μm long and 960 μm at its widest; subcostal ridge extending from base of wing to more than 4/5 wing length, forming apically a well-defined club-shaped pterostigma (1 640 μm long total); cubital ridge 1150 μm long, starting about 395 μm from base of wing and fading before reaching pterostigma apex level; angle between subcostal ridge and cubital ridge approximately 45°; anterior flexing patch 1100 μm long, inconspicuous but appearing at same location as cubital ridge and separating progressively, fading before reaching pterostigma apex level; posterior flexing patch present but very weak, starting point invisible. Alar setae and microtrichia absent; sensoria present as a row along subcostal ridge. Alar fold and fine sculpturing present. Hamulohalteres large, leaf shaped (Fig. 2J), each about 190 μm long, 80 μm wide, with 4 hamuli attached on anterodistal margin.
Legs (Fig. 2 D) slender, subequal in length; fore-coxae situated remote from mid-coxae at a distance of about 440 μm; mid- and hind-coxae situated near to each other, about 185 μm apart; dimensions of right mid-leg: coxa, 170 μm long, 70 μm wide; trochanter + femur 600 μm long, 75 μm wide, with some short and hair-like setae; tibia, 540 μm long, 45 μm wide, with short spine-like setae and some setae that seem to be bifurcate (Fig. 2E), each about 25 μm long; tibial spurs not differentiated; tarsus 2-segmented; proximal segment very short and triangular, 200 μm long, 25 μm wide, with spine-like setae and some setae that seem to be bifurcate (Fig. 2E), each about 20 μm long; tarsal digitules undifferentiated; claws each ca. 60 μm long, 20 μm wide at base, strong and slightly bent, with 2 spine-like digitules (Fig. 2E), each 10–15 μm long, not reaching claw apex; claw without a denticle.
Abdomen (Fig. 2A and 2B) cylindrical, about 840 μm long (815 μm without penial sheath), maximum width 375 μm. Tergites and sternites well developed and segmentation clear, with a pair of slightly sclerotized tubercular projections on apex of abdominal segment VIII (Fig. 2C). Each tergite with one row of small pores on posterior margin, and anterior three tergites with distinct median ridge. Tergites VI and VII each with 1 row of 9 tubular ducts (Fig. 2A) extruding wax filaments (each filament about 3500 μm long).
Penial sheath (Fig. 2B) narrow and triangular, 220 μm long, 125 μm wide at base, tapering posteriorly; without setae. Aedeagus obscured. Eversible endophallus visible.
Etymology. The species epithet longicumulus is a noun in apposition. It comes from combination of the Latin prefix ‘ longi- ’ (from the Latin longus meaning ‘long’) and the masculine Latin noun ‘ cumulus ’ (meaning ‘accumulation’), referring to the long and densely crowded setae on the antenna.
description: Published as part of Lin, Shan, Yao, Yunzhi & Ren, Dong, 2018, A new scale insect of the extinct family Weitschatidae (Insecta: Hemiptera: Coccomorpha) from mid-Cretaceous Burmese amber, pp. 427-434 in Zootaxa 4407 (3) on pages 431-432, DOI: 10.11646/zootaxa.4407.3.9, http://zenodo.org/record/1216662