Hallodapomimus antennatus Herczek & Popov

Herczek, Aleksander & Popov, Yuri A., 2015, An unusual new species of Hallodapomimus Herczek, 2000 from the Eocene Baltic amber (Hemiptera, Heteroptera, Miridae, Phylinae), ZooKeys 489, pp. 25-32 : 26-28

Taxon classification Animalia Hemiptera Miridae

Hallodapomimus antennatus Herczek & Popov sp. n. Figs 1, 2-3, 4-5

Type material.

Holotype: female, Baltic amber, PIN RAS 964/1310; light yellowish middle-sized piece of amber (28 × 12 mm) of irregular shape. One dipteran syninclusion. The holotype is deposited in the collection of the Borissyak Paleontological Institute Russian Academy of Sciences (Arthropod Laboratory), Moscow.

Diagnosis.

Readily recognized among the other species of Hallodapomimus by its unusual flattened and widened second antennal segment, presence of two cavities on the vertex, a small scutellum (except Hallodapomimus succinus ), and a large mesoscutum.

Description.

Female. Macropterous. Body length up to 7 mm, 2.8 times as long as wide. Dorsal surface almost smooth, impunctate. Ground colour light brown, almost yellow; mesoscutum and scutellum brown, hemelytra with one pale transverse fascia just posterior to scutellum, apical part of cuneus dark; hemelytral membrane dark, hyaline, slightly crumpled (Figs 1, 2). Head more than twice (2.3 times) as broad as long; clypeus distinct and not protruding above frons; genal conus distinct; eyes large, almost globular, distinctly protruding laterally and almost touching pronotal collar; vertex with two slightly concave, polished cavities (Fig. 3), antennae inserted just above the lower margins of eyes; fovea antennalis touching the inner margin of eye; second antennal segment laterally flattened and considerably widened to apex, 2.2 times longer than 3rd segment, 3rd almost twice as long as 4th one; rostrum reaching hind coxae. Pronotum tapering (narrowing) to ca. 1.75 (1.76) its length, 1.37 times wider than long; collar rather broad, flat; calli distinctly developed, quite large, occupying almost half of pronotal disc. Mesoscutum broadly exposed, scutellum quite small, only twice longer than mesoscutum length and ca. one third length of claval commissure, distinctly convex. Hemelytra wholly flattened; cuneus rather short: ca. one third length of corium and one fifth times length of hemelytron; large cell of hemelytral membrane almost rectangular, smaller cell very small, almost 4 times shorter than large cell (Figs 1, 2). All legs rather slender and covered with very short, dense, adpressed setae; hind tibia with two rows of very short spines on dorsal (10-11) and ventral (5-6) surface of its distal part, these clearly shorter than diameter of tibia (Fig. 4); first tarsal segments longest, second shorter than third (Fig. 4); claws short and slightly curved, setiform parempodia easily visible (Fig. 5).

Measurements. Body length 7.0 mm, width 2.5; length of head 0.65, width 1.5; width of eye (from above) 0.65; width of vertex 0.5; length of antennal segments = 0.75: 3.65: 1.8: 0.95 (7.15 mm); length of rostral segments I: II: III: IV = 0.74: 1.17: 0.44: 0.6; length of pronotum 1.24, anterior width (collar) 0.85, posterior width 1.7; thickness of collar 0.18; length of hemelytron 4.79, width 1.16; proportion of hemelytron, corium and length of cuneus: 4.8 –2.9– 1.0; length of mesoscutum 0.2 (mid line 0.2), width 0.6; length of scutellum 0.4; claval commissure 1.3; hind leg: length of femora 3.0, tibia 4.2, tarsus 1.38 (0.59:0.35:0.44).

Etymology.

The species epithet (Latin “antennatus”) refers to the unusual flattened and widened the second antennal segment.