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Fig. 11 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 11. Series of post-imaginal growth. (A–H) Gradative development of the metendesternite and sternite II of Thyreoxenus major stenogastric to the full-grown physogastric specimen. (I) Termitozophilus laetus, habitus lateral. (J) Primary and secondary sclerotization on the paratergite. Scale bars: 0.4 mm.

Fig. 8 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 8. Sternite VIII and spermatheca in Xenogaster species. Tergite VIII of (A) Xenogaster lugens sp. nov. (B) X. pilosula. (C) X. subuda. (D) X. inflata. Spermatheca of: (E) X. lugens sp. nov. (F) X. pilosula. (G) X. subnuda. (H) X. inflata. Scale bars: A, B, F = 0.2 mm; C, D = 0.1 mm; E, G, H = 0.025 mm.

Fig. 9 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 9. Termitogaster emersoni Mann. Comparison between stenogastric and physogastric specimens. Blue arrows point to the metendesternite; red arrows to sternite II (absent on the stenogastric). (A–B) Ventral view of stenogastric specimen. (C–D) Ventral view of physogastric specimen. Scale bars: A: 0.5 mm; B = 0.77 mm. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

Fig. 5 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 5. (A) Termitogaster emersoni Mann, 1923, stenogastric individual (lateral). Note that in Corotocini, stenogastric specimens have well-developed membranous wings, not always present in subsequent stages. Scale bar = 0.5 mm.

Fig. 6 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 6. Xenogaster lugens sp. nov. and X. pilosula (habitus and abdomen, lateral view). Blue arrows indicate post-sternal sclerotization (PSS). (A–B) absent in X. lugens sp. nov. (C–D) Well-developed in X. pilosula. Scale bars: A = 0.67 mm; C = 0.37 mm. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

Fig. 3. Xenogaster pilosula Seevers, 1957 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 3. Xenogaster pilosula Seevers, 1957, holotype. (A) Habitus lateral. (B) Labels. (C) Habitus dorsal. Scale on figure.

Fig. 7 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 7. Development of sternite II (indicated by red arrows) and PSS development (indicated by blue arrows). (A, D) X. lugens sp. nov. (early) and (C, F). X. pilosula (intermediate): totally absent or partially developed in early and/or intermediate forms (B, E) X. pilosula (full-grown): conspicuously and well-developed. Scale bars: A = 0.67 mm; B, C = 0.37 mm. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

Fig. 4. Xenogaster pilosula Seevers, 1957 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 4. Xenogaster pilosula Seevers, 1957. (A) Ventral view of head. (B) Antennae (apex collapsed). (C) Mandibles (prostheca indicated by arrows). (D) Labrum and clypeus (clypeus indicated by arrow). (E) Labium (dorsal view). (F) Maxilla (dorsal view). (G) Pronotum. (H) Meso- metanotum, and tergite I. (I) Meso- metasternum. (J) Elytron. (K) Prothoracic leg. (L) Mesothoracic leg. (M) Metathoracic leg. (N) tergite VII. (O) Sternite VIII (female). (P) Protarsus. (Q) Mesotarsus. (R) Metatarsus. (S) Sternite VIII (male). (T) Sternite IX, tergites IX and X (male). (U) Aedeagus (parameral view). (V) tergites IX and X (female). (W) Spermatheca. Scale bars: A, B, J, M, N, P, Q, R, T, U, V, W = 0.1 mm; G, K, L, O, S = 0.2 mm; D, E = 0.2 mm; F, H, I = 0.05 mm; C = 0.03 mm.

Fig. 2 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 2. Xenogaster lugens sp. nov. last segments dissected. (A) Tergite VII. (B) Tergites IX and X. (C) Tergite VIII. (D) Sternite VIII. (E) Spermatheca. Scale bars: A, C, D = 0.2 mm; B, E = 0.05 mm.

Fig. 1 in The underestimation and evolutionary significance of post-imaginal growth in the termitophilous Termitogastrina: Insights from a new species of Xenogaster from Brazil (Staphylinidae: Aleocharinae: Corotocini)

Fig. 1. Xenogaster lugens sp. nov., holotype. (A) Habitus lateral. (B) Habitus ventral. (C) Habitus dorsal. Scale bars: 0.67 mm.

FIGURES 97 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 97. Labial complex of Xenogaster pseudonuda sp. nov. Abbreviations = as: apical sensilla; asp: apical spiniform sensilla; ds: distal seta of prementum; lb: lobe; lg: ligula.

FIGURES 83–86 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 83–86. Xenogaster kymopoleia sp. nov. 83, pronotum, dorsal view; 84, detail of bristles on anterior margin; 85, detail of lateral margin; 86, microsetae present across lateral margin. Abbreviations = pm: posterior margin; am = anterior margin. Scale bars = 1 µm (86); 2 µm (84); 10 µm (85); 30 µm (83).

FIGURES 68–82 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 68–82. Xenogaster kymopoleia sp. nov. 68, front leg; 69, middle leg; 70, hind leg; 71, front tarsus; 72, middle tarsus; 73, hind tarsus; 74, tergite VII; 75, sternite VIII (female); 76, tergite VIII (male); 77, tergite IX and sternite IX (female); 78, tergite X–IX (female); 79, spermatheca; 80, tergites IX–X and sternite IX (male); 81, lateral lobe; 82, aedeagus, dorsal view. Scale bars = 0,025 mm (79); 0,03 mm (72); 0,05 mm (71, 73, 74, 76, 78, 80, 81); 0,06 mm (69, 75); 0,075 mm (82, 77); 0,1 mm (68, 70).

FIGURES 47–49 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 47–49. Xenogaster kymopoleia sp. nov., holotype male. Habitus. 47, lateral; 48, ventral; 49, dorsal. Scale bars = 0,72 mm.

FIGURES 87–90 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 87–90. Xenogaster kymopoleia sp. nov. 87, elytra (dorsal); 88, detail of apex of anterior margin; 89, detail of lateral margin; 90, small bristles distributed across the elytra. Scale bars = 1 µm (90); 3 µm (88); 10 µm (89); 20 µm (87).

FIGURES 43–46 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 43–46. Illustrative schemes showing the differences between the genitalia of Xenogaster pseudonuda sp. nov and X. subnuda. 43, aedeagus of X. pseudonuda (dorsal view); 44, aedeagus of X. subnuda (dorsal view), 45, lateral lobe of X. pseudonuda; 46, lateral lobe of X. subnuda. Abbreviations = al: apical lobe; LL: lateral lobe; bc: basal capsule; px.s.: proximal segment; md.s.: medial segment; dt.s.: distal segment.

FIGURES 50–52 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 50–52. Xenogaster kymopoleia sp. nov., paratype female. Habitus. 50, lateral; 51, ventral; 52, dorsal. Scale bars = 0,77 mm.

FIGURES 35–38 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 35–38. Xenogaster pseudonuda sp. nov. 35, pronotum (dorsal); 36, detail of lateral margins; 37, microsetae on pronotal disc; 38, details of outer border of lateral margin. White arrows point to a fallen bristle. Scale bars = 3 µm (35), 10 µm (36, 37, 38).

FIGURES 39–42 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 39–42. Xenogaster pseudonuda sp. nov. 39, elytra (dorsal); 40, detail of apex of anterior region; 41, detail of small bristles near lateral margins; 42, detail of long bristle of elytra. Scale bars = 3 µm (42); 10 µm (40, 41); 30 µm (39).

FIGURES 1–3 in Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini)

FIGURES 1–3. Xenogaster pseudonuda sp. nov., holotype male. Habitus (elytra missing). 1, lateral; 2, ventral, 3, dorsal. Scale bars = 0,85 mm.