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532 results for “Middle Eocene”
FIGURE 22 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 22. Opetia americana Amorim and Greenwalt sp. n., female, USNM 621520. A, Habitus; B, Head and anterior end of scutum. Abbreviations: ar1–2, aristomeres 1 and 2; flg1, flagellomere 1; orb, orbital setae; presut sa, presutural supra-alars. Scale bars equal 1.0 (A) and 0.1 mm (B).
FIGURE 21 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 21. Hoplocyrtoma eocenica Sinclair and Greenwalt sp. n., USNM 621518. A, Antennae and mouthparts; B, Left hind leg; C, Genitalia. Scale bars equal 0.2 mm (A, C) and 0.5 mm (B).
FIGURE 18 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 18. Microphorella fragilis Cumming and Greenwalt sp. n., USNM 624117, male. A, Habitus; B, Right wing; C, Wing drawing. Scale bars equal 1.0 mm (A) and 0.5 mm (B).
FIGURE 16 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 16. Palaeoapsilocephala kishenehnensis Hauser and Greenwalt gen. and sp. n., USNM 717195, Male. A, Habitus; B, Antennae; C, Drawing of antennae; D, Right wing; E, Drawing of right wing. Scale bars equal 2.0 mm (A), 0.15 mm (B), and 1.0 mm (D).
FIGURE 24 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 24. Opetia americana Amorim and Greenwalt sp. n., female, USNM 621520. A, Left wing base; B, Tip of abdomen and terminalia. Abbreviations: ovi, ovipositor; scl, ovipositor sclerotized lines; T3–6, tergite. Scale bars equal 0.2 mm.
FIGURE 14 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 14. Brevitrichia messogenes Greenwalt and Winterton sp. n., USNM 620163, female. A, Habitus; B, Head and antennae; C, Genitalia. Scale bars equal 1.0 mm (A), and 0.2 mm (B, C).
FIGURE 15 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 15. Brevitrichia messogenes Greenwalt and Winterton sp. n., USNM 620163. A, Left wing; B, wing, drawing. Scale bar = 1.0 mm.
FIGURE 2 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 2. Dilophus idanos Fitzgerald and Greenwalt sp. n., USNM 624840, male. A, Habitus; B, Left wing; C, Wing drawing. Scale bars equal 1.0 mm (A) and 0.5 mm (B).
FIGURE 6 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 6. Azana akarenos Kerr and Greenwalt sp. n. female, USNM 625099. Habitus; Insert: Terminalia. Scale bar equals 2.0 mm.
FIGURE 10 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 10. Macrocera apithanos Kerr and Greenwalt sp. n. (allotype), USNM 729602, female. A, Habitus. B, Head, dorsal view. Arrows from top to bottom denote end of F1, spherical setose pedicel and cerebral sclerite. C, Hind tibial spurs. D, Genitalia. Scale bars equal 5.0 mm (A), 0.5 mm (B), 0.2 mm (C), and 0.5 mm (D).
FIGURE 1 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 1. Psectrosciara makrochaites Amorim and Greenwalt sp. n., female, USNM 625934 and P. crassieton Amorim and Greenwalt sp. n., female, USNM 625035. A, P. makrochaites, habitus; B, Head and antennae; C, Wing, veins M1, M2 and CuA; black arrows denote long abdominal hairs; D, Microsetae on wing surface; E, Legs. Short arrow denotes fore tibia not produced beyond base of tarsus, long arrow denotes apex of hind tibia not club-shaped, swollen at apex; F, Genitalia, spermatheca; G, P. crassieton, habitus. Scale bars equal 1.0 mm (A, G), 0.5 mm (B), 0.3 mm (C), and 0.2 mm (D-F).
FIGURE 13 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 13. Tmemophlebia carolinae Evenhuis and Greenwalt sp. n., USNM 768156. A, Right wing; B, Drawing of wing; C, Terminalia. TVII denotes 7th tergite of abdomen. Arrows from left to right denote epandrium (E—light area in middle of epandrium has lost the thin carbonaceous layer that constitutes the fossil), apical notch of epandrium (N), gonostylus (S) and gonocoxite and phallic complex (G). Scale bars equal 1.0 mm (A) and 0.2 mm (C).
FIGURE 9 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 9. Macrocera apithanos Kerr and Greenwalt sp. n., USNM 624407. A, Left wing; B, Left wing, drawing; C, Body, setose. Scale bars equal 1.0 mm.
FIGURE 8 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 8. Macrocera apithanos Kerr and Greenwalt sp. n., USNM 624407, male. A, Habitus; B, Genitalia. Black arrows denote setae; white arrow denotes a row of fore tibial spines. Scale bar equals 5.0 mm (A) and 0.5 mm (B).
FIGURE 7 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 7. Azana akarenos Kerr and Greenwalt sp. n. USNM 625099. A, Left wing, arrow denotes vestigial M4; B, Sc, right wing; C, Left wing macrotrichia; D, Row of spines on right mid tibia (small arrows), tibial spur (large arrow). Scale bars equal 0.5 mm (A), 0.1 mm (B,C), and 0.2 mm (D).
FIGURE 12 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 12. Tmemophlebia carolinae Evenhuis and Greenwalt sp. n., USNM 768156, male. A, Habitus; B, Proboscis. Arrows from left to right denote labellum, labrum and palpus, respectively; C, Postpedicel. Arrow denotes bulbous dorsal prong of apical sulcus. Scale bars equal 2.0 mm (A) and 0.5 mm (B).
FIGURE 11 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 11. Macrocera apithanos Kerr and Greenwalt sp. n. A, Habitus of paratype female, USNM 768010. B-D, Area of wing basal of vein M1+2 of B) holotype, C) allotype female and D) paratype female. Scale bar equals 3.0 mm (A).
FIGURE 5 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 5. Dilophus magnus Dürrenfeldt, 1968, GZG.W 14836. A, Habitus (part); B, Wing (part), arrows denote r-m crossvein of two overlapping wings; C, Habitus (counterpart); D, Wing (counterpart); E, Apex of wing (counterpart), arrow denotes vein R4+5; F, Drawing of wing. Scale bars equal 1.0 mm (A,C), 0.5 mm (B,D), and 0.2 mm (F).
FIGURE 3 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 3. Dilophus idanos Fitzgerald and Greenwalt sp. n., USNM 624840. A, Mesonotal spines; B, Spines of left fore tibia. C, Antennae (left arrow), palpus (right arrow) and spines (arrowheads) of right fore tibia. Scale bars equal 200 um.
FIGURE 4 in Diptera of the Middle Eocene Kishenehn Formation II
FIGURE 4. Dilophus idanos Fitzgerald and Greenwalt sp. n., paratype. USNM 768228, male. A, Habitus; B, Mesonotal spines; C, Spines of fore tibia. Scale bars equal 1.0 mm (A) and 0.2 mm (B, C).
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