Empherium rasnitsyni HAKIM & HUANG & AZAR 2021, sp. nov.
Empherium rasnitsyni sp. nov. (Figs 2–5) Type material. Holotype specimen PIN 3426 /34, female, mostly well-preserved (Fig. 2). Visible breaks in the amber, especially over the head area, creating a mirror effect during observation. No syninclusions observed. Etymology. Named after Professor Alexand...
| Main Authors: | , , |
|---|---|
| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2021
|
| Subjects: | |
| Online Access: | https://zenodo.org/record/5560053 https://doi.org/10.5281/zenodo.5560053 |
| Summary: | Empherium rasnitsyni sp. nov. (Figs 2–5) Type material. Holotype specimen PIN 3426 /34, female, mostly well-preserved (Fig. 2). Visible breaks in the amber, especially over the head area, creating a mirror effect during observation. No syninclusions observed. Etymology. Named after Professor Alexandr Rasnitsyn. Diagnosis. As for genus, by monotypy. Locality and horizon. Nizhnyaya Agapa, Taimyr Peninsula, Russia, Dolgan Formation, Cretaceous (Upper Cenomanian). Description. Head 0.70 mm wide (Fig. 3A); dorsal suture visible, much accentuated. Ocelli present. Compound eyes bare, as long as vertex. Antenna with 25 antennomeres, setae thin and sparse along its length, no secondary annulations; complete antenna with 23 flagellomeres, 0.01 mm wide and 0.05–0.06 mm long, last segment diminutive, with two small and thin apical setae pointing forward. Maxillary palpomeres four-segmented, setose, second palpomere with strong conical sensillum at middle (Fig. 3B). Labial palpomeres two-segmented. Lacinia not visible. Thorax 0.60 mm wide; legs with tibia bearing occasional spines along its length and two apical spurs. Tarsi three-segmented (Fig. 3C); ratio of tarsal segments (from base to apex) in fore and mid-legs 3:1:1, in hindlegs 4.5:1:1; basal tarsomere with two rows of four spines but no ctenidiobothria (Fig. 3D); pretarsal claw without preapical tooth, pulvillus present (long and narrow basally but rounded, sphere-like, apically). Wings macropterous (Fig. 3E); forewing (1.80 mm long and 0.50 mm wide) with marginal setae; membrane hyaline, setae arranged in two rows around veins and sparsely dispersed in some areas of membrane (e. g., pterostigma cell and anal region); Sc present, curved back and fusing with R, additional veinlet emerging from Sc and reaching costal margin; Sc’ reaching margin at 1.09 mm; pterostigma cell closed basally, 0.30 mm long and 0.10 mm wide; R 1 reaching margin at 1.30 mm from base; Rs bifurcated, R 2+3 reaching margin at 1.60 mm and R 4+5 reaching margin at apex; short crossvein r 1 -rs ... |
|---|