Paleocader pulchellus, HEISS & GOLUB, 2021

HEISS, ERNST & GOLUB, VIKTOR B., 2021, Three new species of the fossil Cantacaderinae genus Paleocader Froeschner, 1996 from the Baltic and Rovno amber (Hemiptera, Heteroptera, Tingidae), Palaeoentomology 4 (4), pp. 360-366 : 363-364

Paleocader pulchellus sp. nov.

( Fig. 1C , 2 )

Holotype. Male specimen in a subquadrangular piece of transparent Baltic amber, about 28 × 25 × 3 mm. The specimen is complete, dorsal side clearly visible, ventral body structures partly obscured by whitish covering (Verlumung). This specimen JD 5398 is designated as holotype and temporarily deposited in the H. Ribbecke collection ( Thelkow , Germany) which will be transferred later to a public institution.

Etymology. The adjective ‘ pulchellus ’ (Latin) beautiful, refers to the fine preservation of the inclusion.

Diagnosis. Paleocader pulchellus sp. nov. is recognized and differs by following characters from other congeners described herein: from P. balticus sp. nov. and P. rovnensis sp. nov. by larger size (3.9 vs. 3.85 and 3.70 mm); longer antennae, ratio length of antennae / width of head (4.9 vs. 3.54 and 3.09); more slender abdomen, ratio length /width of abdomen (1,67 vs. 1.53 and 1.62).

Description. Macropterous male.

Head. Slightly wider than long, with two pairs of long, erect cephalic spines directed anterolaterally; surface deeply punctured; genae anteriorly produced over clypeus, antenniferous lobes short and blunt; antennae long and slender 4.9 times as long as width of head, segments I+II shortest and thicker, III longest and thinner, 4.0 times as long as width of head, IV short, thin and fusiform; approximate length of antennal segments I / II / III / IV = 0.125 / 0.125 / 2.2 / 0.25 mm; eyes globular semi-inserted in head; rostral groove laterally laminate along head, pro-, meso- and metasternum, rostrum longer, reaching middle of sternite IV.

Pronotum. Wider than long, lateral margins rounded at humeri then converging anteriorly, slightly sinuate at middle, anterolateral angles blunt; paranota with two rows of areolae; surface of disk with five longitudinal carinae, the two humeral ones shorter than the three median ones extending along full length of pronotum; shorter anterior lobe raised toward head and longer posterior lobe raised posteriorly are separated by a transverse depression; posterior margin convex without posterior prolongation.

Scutellum. Triangular, small with acute apex.

Hemelytra. Distinctly produced over abdomen, 1.67 times as long as width, lateral margins evenly rounded; clavus with rows of areolae, commissura slightly longer than pronotum; sutural area with one row of areolae along clavus and a short additional row at insinuation at apex of clavus; discoidal area with six rows of areolae at its widest and two transverse veinlets; subcostal area with six rows and three veinlets; costal area with four rows of areolae which are larger than those of all other parts of hemelytra; stenocostal area with one row; membrane completely areolate, their areoles increasing in size posteriorly.

Legs. Femora and tibiae straight, long and slender, tarsi two-segmented with long claws.

Measurements. Length 3.9 mm, head length / width 0.5 / 0.55 mm; pronotum length / width 0.77 / 1.0 mm; hemelytra length / width 2.85 / 1.7 mm, ratio 1.67; length of antennal segment III / width of head 2.2 / 0.55 mm, ratio 4.0.

Figures

FIGURE 1. Paleocader balticus sp. nov., holotype male. A, Dorsal view. B, Amber piece with inclusion. C, Paleocader pulchellus sp. nov., amber piece with inclusion.Arrows indicate the position of specimen. Scale bar = 1 mm. ©J. Damzen

FIGURE 2. Paleocader pulchellus sp. nov., holotype male. A, Dorsal view. B, Ventral view. C, Head and pronotum, dorsal. D, Anterior body, ventral. E, Terminal abdomen, ventral. Scale bars = 1 mm in A and B; 500 μm in others. ©J. Damzen