Dissomphalus microstictus, Evans, 1969

Alencar, I. D. C. C. & Azevedo, C. O., 2008, A new species-group of Dissomphalus (Hymenoptera: Bethylidae), with description of thirteen new species, Zootaxa 1851 (1), pp. 1-28 : 3-4

Key to males of Neotropical microstictus species-group of Dissomphalus

1. Filament of ventral ramus evenly narrow along its length ( Fig. 4 ); apical margin of filament convex in lateral view ( Fig. 76 ); dorsal body with surface vertical, and basal plate present ( Fig. 5 )...................2

– Filament of ventral ramus wide ( Figs. 29 ); apical margin of filament concave in lateral view ( Fig. 31 ); dorsal body with surface horizontal, and basal plate absent ( Figs. 30 ). D. forceps Alencar & Azevedo

2 (1). Basal bar with upper margin continuous to outer lobe; connector with lateral expansion narrowing gradually apicad, divergent apicad, mid part triangular ( Fig. 62 ) .. D. perturbatus Alencar & Azevedo

– Basal bar without upper margin continuous to outer lobe; connector never as above..........................3

3 (2). Basal bar trapezoidal and with median elevation on upper margin ( Fig. 43 ); upper margin of basal plate with median projection to apex ( Fig. 43 ).....................................................................................4

– Basal bar triangular ( Fig. 49 ); when upper margin of basal plate with median projection to apex, upper margin of basal bar never with median elevation..................................................................................5

4 (3). Filament of ventral ramus sinuous ( Fig. 55 ); outer lobe about 0.5x length of dorsal body, dorsal margin of outer lobe waved ( Fig. 56 ) ..................................................... D. perparvus Alencar & Azevedo

– Filament of ventral ramus straight ( Fig. 42 ); outer lobe more than 0.5x length of dorsal body, dorsal margin of outer lobe sinuous ( Fig. 43 ) ................................................... D. osseus Alencar & Azevedo

5 (3). Dorsal body with apex divergent in ventral view ( Fig. 25 , 50 )............................................................6

– Dorsal body with apex convergent or straight in ventral view ( Fig. 6 , 19 )..........................................7

6 (5). Paramere wide subapically in dorsal view; dorsal body with apex angled in ventral view ( Fig. 50 ); connector c-shaped apically; basal plate with upper margin with median projection to apex ( Fig. 49 ). ............................................................................................................. D. paululus Alencar & Azevedo

– Paramere wide basally in dorsal view; dorsal body with apex rounded in ventral view ( Fig. 25 ); connector sinuous; basal plate simple ( Fig. 24 ) .................................... D. divaricatus Alencar & Azevedo

7 (5). Connector with apex of lateral expansion bifurcated ( Fig. 5 , 80 ).........................................................8

– Connector with apex of lateral expansion not bifurcated......................................................................9

8 (7). Apex of filament slightly dilated ( Fig. 79 ); dorsal body with three pairs of apical lobes ( Fig. 80 )........ .............................................................................................................. D. refertus Alencar & Azevedo

– Apex of filament not dilated ( Fig. 4 ); dorsal body with two pairs of apical lobes ( Fig. 5 ) .................... ............................................................................................................................. D. microstictus Evans

9 (7). Filament of ventral ramus inserted apically ( Fig. 66 , 91 ), outer lobe of dorsal body with two concavities in dorsal view ( Fig. 67 , 92 )...........................................................................................................10

– Filament of ventral ramus inserted subapically ( Fig. 72 , 79 ), outer lobe of dorsal body not as above ( Fig. 18, 24 , 36 )...................................................................................................................................11

10 (9). Paramere very wide basally in lateral view ( Fig. 70 ); outer lobe of dorsal body with ventral margin without apical corner dilated ( Fig. 68, 69 ) .................................. D. perventriosus Alencar & Azevedo

– Paramere wide basally in lateral view but never as above; outer lobe of dorsal body with ventral margin with apical corner dilated ( Fig. 93, 94 ) ............................................. D. uncus Alencar & Azevedo

11 (9). Basal bar with lateral margin folded mesad ( Fig. 18 , 36 )...................................................................12

– Basal bar without lateral margin folded mesad ( Fig. 73 )....................................................................13

12 (11). Paramere with small angled fold at dorsal margin near base; basal plate with median lower margin straight with pre-basal constriction ( Fig. 18 ) ........................................ D. balteus Alencar & Azevedo

– Paramere without fold at dorsal margin near base; basal plate with lower margin convex with small rounded projection laterad ( Fig. 36 ) ................................................. D. incurvatus Alencar & Azevedo

13 (11). Paramere very wide in middle in dorsal view ( Fig. 73 ); apex of dorsal margin of outer lobe serrate in lateral view ( Fig. 75 ); basal bar with upper margin concave ( Fig. 73 ) ..... D. pilus Alencar & Azevedo

– Paramere evenly wide in dorsal view ( Fig. 85 ); apex of dorsal body without such projection in lateral view ( Fig. 87 ); basal bar with upper margin tetradentate ( Fig. 85 ) ..... D. signatus Alencar & Azevedo

Figures

FIGURES 1–8. Dissomphalus microstictus 1, mandible, frontal view; 2, clypeus, dorsal view; 3, tergal process, dorsal view; 4, genitalia, ventral view; 5, genitalia, dorsal view; 6, outer lobe, ventral view; 7, apex of dorsal body, lateral view; 8, paramere, lateral view. (Scale bars = 250 µm).

FIGURES 66–77. 66–70, Dissomphalus perventriosus. 66, genitalia, ventral view; 67, genitalia, dorsal view; 68, outer lobe, ventral view; 69, apex of dorsal body, lateral view; 70, paramere, lateral view; 71–77 Dissomphalus pilus. 71, tergal process, dorsal view; 72, genitalia, ventral view; 73, genitalia, dorsal view; 74, outer lobe, ventral view; 75, apex of outer lobe, lateral view;76, filament of ventral ramus, lateral view; 77, paramere, lateral view. (Scale bars = 250 µm).

FIGURES 28–40. 28–33, Dissomphalus forceps. 28, tergal process, dorsal view; 29, genitalia, ventral view; 30, genitalia, dorsal view; 31, apex of filament, lateral view; 32, outer lobe, lateral view; 33, paramere, lateral view; 34–40, Dissomphalus incurvatus. 34, tergal process, dorsal view; 35, genitalia, ventral view; 36, genitalia, dorsal view; 37, outer lobe, ventral view; 38, apex of outer lobe, lateral view; 39, apex of dorsal body, dorsal view; 40, paramere, lateral view. (Scale bars = 250 µm).

FIGURES 53–65. 53–59, Dissomphalus perparvus. 53, mandible, frontal view; 54, tergal process, dorsal view; 55, genitalia, ventral view; 56, genitalia, dorsal view; 57, outer lobe, ventral view; 58, apex of outer lobe, lateral view; 59, paramere, lateral view; 60–65, Dissomphalus perturbatus. 60, tergal process, dorsal view; 61, genitalia, ventral view; 62, genitalia, dorsal view; 63, outer lobe, ventral view; 64, apex of dorsal body, lateral view; 65, paramere, lateral view. (Scale bars = 250 µm).

FIGURES 41–52. 41–46, Dissomphalus osseus. 41, tergal process, dorsal view; 42, genitalia, ventral view; 43, genitalia, dorsal view; 44, outer lobe, ventral view; 45, apex of dorsal body, lateral view; 46, paramere, lateral view; 47–52, Dissomphalus paululus. 47, tergal process, dorsal view; 48, genitalia, ventral view; 49, genitalia, dorsal view; 50, outer lobe, ventral view; 51, apex of dorsal body, lateral view; 52, paramere, lateral view. (Scale bars = 250 µm).

FIGURES 17–27. 17–21, Dissomphalus balteus. 17, genitalia, ventral view; 18, genitalia, dorsal view; 19, outer lobe, ventral view; 20, apex of dorsal body, lateral view; 21, paramere, lateral view; 22–27, Dissomphalus divaricatus. 22, tergal process, dorsal view; 23, genitalia, ventral view; 24, genitalia, dorsal view; 25, filament of ventral ramus, lateral view; 26, apex of dorsal body, lateral view; 27, paramere, lateral view. (Scale bars = 250 µm).

FIGURES 78–89. 78–83, Dissomphalus refertus. 78, tergal process, dorsal view; 79, genitalia, ventral view; 80, genitalia, dorsal view; 81, outer lobe, ventral view; 82, apex of outer lobe, lateral view; 83, paramere, lateral view; 84–88 Dissomphalus signatus. 84, genitalia, ventral view; 85, genitalia, dorsal view; 86, outer lobe, ventral view; 87, apex of dorsal body, lateral view; 88, paramere, lateral view; 89, paramere, basal inner view. (Scale bars = 250 µm).

FIGURES 90–102. Dissomphalus uncus. 90–95, male; 90, tergal process, dorsal view; 91, genitalia, ventral view; 92, genitalia, dorsal view; 93, outer lobe, ventral view; 94, apex of dorsal body, lateral view; 95, paramere, lateral view; 96– 102, female; 96, body, dorsal view; 97, head, lateral view; 98, mandible, frontal view; 99, clypeus, frontal view; 100, mesosoma profile, lateral view; 101, fore leg, lateral view; 102, middle leg, lateral view. (Scale bars = 250 µm).