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Figs. 30–34 in Taxonomy of Stenomicra cogani, with description of S. gracilior sp. nov. from Turkey and comparative morphology of terminalia in Stenomicridae (Diptera)

Figs. 30–34. Stenomicra gracilior sp. nov., female (paratype). 30 – abdomen dorsally; 31 – same, ventrally; 32 – spermathecae; 33 – postabdomen dorsally; 34 – same, ventrally. Scales = 0.2 mm (Figs. 30, 31), 0.05 mm (Fig. 32) and 0.1 mm (Figs. 33, 34). For abbreviations see text (p. 701).

Figs. 21–23 in Taxonomy of Stenomicra cogani, with description of S. gracilior sp. nov. from Turkey and comparative morphology of terminalia in Stenomicridae (Diptera)

Figs. 21–23. Stenomicra gracilior sp. nov., male (holotype). 21 – head frontally; 22 – head, laterally; 23 – f2 anteriorly. Scales = 0.2 mm. For abbreviations see text (p. 701).

Figs. 5–6 in Taxonomy of Stenomicra cogani, with description of S. gracilior sp. nov. from Turkey and comparative morphology of terminalia in Stenomicridae (Diptera)

Figs. 5–6. Wings of Stenomicra species. 5 – Stenomicra cogani Irwin, 1982, female (Czech Republic: N. Bohemia), length 1.95 mm; 6 – S. gracilior sp. nov., male (holotype), length 1.63 mm. Photo by J. Roháček.

Figs. 7–14. Stenomicra cogani Irwin, 1982, male. 7 in Taxonomy of Stenomicra cogani, with description of S. gracilior sp. nov. from Turkey and comparative morphology of terminalia in Stenomicridae (Diptera)

Figs. 7–14. Stenomicra cogani Irwin, 1982, male. 7 – external genitalia, caudally; 8 – genitalia, laterally; 9 – gonostylus, subventrally, widest extension; 10 – genitalia and pregenital synsternum S6–S8 in situ, ventrally; 11 – part with original S6, ventrally; 12 – same, another variant; 13 – internal genitalia, laterally (with ea omitted); 14 – filum of distiphallus, anteroventrally. Figs. 7, 12 based on specimen from Romania: Banat, others on specimens from England. Scales = 0.1 mm (Figs. 7, 8, 10), and 0.05 mm (Figs. 9, 12–14). For abbreviations see text (p. 701).

Figs. 24–29 in Taxonomy of Stenomicra cogani, with description of S. gracilior sp. nov. from Turkey and comparative morphology of terminalia in Stenomicridae (Diptera)

Figs. 24–29. Stenomicra gracilior sp. nov., male (holotype). 24 – external genitalia, caudally; 25 – genitalia, laterally; 26 – gonostylus, subventrally, widest extension; 27 – filum of distiphallus, anteroventrally; 28 – internal genitalia, laterally; 29 – pregenital synsternum S6–S8, ventrally. Scales = 0.1 mm (Figs. 24, 25) and 0.05 mm (Figs. 27–29). For abbreviations see text (p. 701).

Figs. 35–38 in Taxonomy of Stenomicra cogani, with description of S. gracilior sp. nov. from Turkey and comparative morphology of terminalia in Stenomicridae (Diptera)

Figs. 35–38. Podocera delicata (Collin, 1944), female (Czech Republic: N Bohemia). 35 – spermathecae; 36 – postabdomen with posterior part of T5, dorsally; 37 – postabdomen with S5, ventrally; 38 – genital chamber with ventral receptacle and spermathecae, laterally. Scales = 0.05 mm (Figs. 35, 38) and 0.1 mm (Figs. 36, 37). For abbreviations see text (p. 701).

Figs. 1–4. Stenomicra cogani Irwin, 1982 in Taxonomy of Stenomicra cogani, with description of S. gracilior sp. nov. from Turkey and comparative morphology of terminalia in Stenomicridae (Diptera)

Figs. 1–4. Stenomicra cogani Irwin, 1982 (Czech Republic: N Bohemia). 1 – female (body length ca. 2 mm) sitting on leaf of Scirpus sylvaticus; 2 – same, dorsal view; 3 – male (body length ca. 1.5 mm) on the same leaf; 4 – male, head and thorax laterally (from dry mounted specimen). Photo by J. Roháček (Figs. 1–3) and M. Deml (Fig. 4).

Figs. 15–20. Stenomicra cogani Irwin, 1982 in Taxonomy of Stenomicra cogani, with description of S. gracilior sp. nov. from Turkey and comparative morphology of terminalia in Stenomicridae (Diptera)

Figs. 15–20. Stenomicra cogani Irwin, 1982, female (Czech Republic: N Bohemia). 15 – abdomen dorsally; 16 – same, ventrally; 17 – genital chamber with ventral receptacle and spermatheca, laterally; 18 – spermathecae; 19 – postabdomen, dorsally; 20 – S5 and postabdomen ventrally. Scales = 0.2 mm (Figs. 15, 16), 0.05 mm (Figs. 17, 18) and 0.1 mm (Figs. 19, 20). For abbreviations see text (p. 701).

Fig. 66 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 66. Two silhouette reconstructions of Ichthyornis dispar by Gregory Paul showing the relative proportions of the elements discussed in the anatomical description. Elements known from Ichthyornis and discussed in the present monograph are in white.

Fig. 64 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 64. The relationships of Austinornis lentus and Guildavis tener and the character support in the primary analysis (fig. 62).

Fig. 63 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 63. The relationships of new taxon Iaceornis marshi and character support in the primary analysis (fig. 62).

Fig. 65 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 65. The relationships of Apatornis celer and its character support in the primary analysis (fig. 62).

Fig. 56 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 56. Manual phalanges of Ichthyornis dispar and Iaceornis marshi: (A) phalanx II:1 of Ichthyornis dispar (YPM 1726) and (B) Iaceornis marshi (YPM 1734) in dorsal view; (C) phalanx II:2 of Ichthyornis dispar (SMM 2503) and (D) Iaceornis marshi (YPM 1734) in dorsal view; (E) phalanx I: 1? of Ichthyornis dispar (YPM 1759) in dorsal view. The distal ends of all phalanges are pointed toward the top of the page.

Fig. 53 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 53. The right radius of Ichthyornis dispar. (A, B, D) the radius incorporated into the ''Ichthyornis victor'' panel mount (YPM 1741; A, D: posteroventral view, B: posterior view); (C) the Ichthyornis dispar holotype (YPM 1450) in posteroventral view. In B, evenly spaced (folicular?) impressions along the posterior edge of the element are indicated with arrows.

Fig. 51 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 51. Comparison of size and morphology of Ichthyornis dispar humeri: (top: distal humeri in anterior view; bottom: proximal humeri in posterior view): (A) YPM 1738, (B) YPM 1450, (C) YPM 1764, (D) YPM 1733, (E) YPM 1452, (F) YPM 1742. These specimens were previously identified as parts of three distinct species (see table 1) but are here referred to Ichthyornis dispar. The range in the height of the dorsal supracondylar process (top) and the size of the humeral head (bottom) appears to be continuous (see arrows).

Fig. 58 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 58. The left femur of the (A) Ichthyornis dispar holotype (YPM 1450; right: anterior view, left: posterior view) and (B) Iaceornis marshi (YPM 1734; posterior view).

Fig. 60 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 60. The tarsometatarsus of Ichthyornis dispar (YPM 1739): (A, B, D) proximal and (C) distal ends in (A, C) anterior, (B) plantar, and (D) dorsal views.

Fig. 47 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 47. The coracoid of Ichthyornis dispar: (A) distal left coracoid of the Ichthyornis dispar holotype (YPM 1450) in (top) ventral and (bottom) dorsal views; (B) right coracoid, YPM 1733, in dorsal view; and (C) proximal left coracoid, YPM 1446, referred to ''Ichthyornis validus'' in Marsh (1880) in (left) dorsal and (right) medial views.

Fig. 46 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 46. Two fragments of the furcula of Ichthyornis dispar: (A) right(?) ramus in medial view including omal tip (SMM 2503) and (B) juncture of fused clavicles in posterior view (YPM 1755).

Fig. 45 in Morphology, Phylogenetic Taxonomy, And Systematics Of Ichthyornis And Apatornis (Avialae: Ornithurae)

Fig. 45. The sternum of Ichthyornis dispar. The holotype specimen (YPM 1450) sternum in (A) dorsal view and (B) as represented by Marsh (1880) as well as two steri from referred specimens (C) YPM 1461 and (D) BMNH A905 in left lateral view. The location of a large midline pneumatic foramen shown in ''A'' is indicated with an arrow in ''B''.