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

publication ID

http://doi.org/ 10.11646/zootaxa.1851.1.1

persistent identifier

http://treatment.plazi.org/id/03F4E846-FFA9-FF8D-FF4A-F9F4FA34FC71

treatment provided by

Felipe

scientific name

Dissomphalus microstictus
status

 

Key to males of Neotropical microstictus   species-group of Dissomphalus  

1. Filament of ventral ramus evenly narrow along its length ( Fig. 4 View FIGURES 1–8 ); apical margin of filament convex in lateral view ( Fig. 76 View FIGURES 66–77 ); dorsal body with surface vertical, and basal plate present ( Fig. 5 View FIGURES 1–8 )...................2

– Filament of ventral ramus wide ( Figs. 29 View FIGURES 28–40 ); apical margin of filament concave in lateral view ( Fig. 31 View FIGURES 28–40 ); dorsal body with surface horizontal, and basal plate absent ( Figs. 30 View FIGURES 28–40 ). 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 View FIGURES 53–65 ) .. 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 View FIGURES 41–52 ); upper margin of basal plate with median projection to apex ( Fig. 43 View FIGURES 41–52 ).....................................................................................4

– Basal bar triangular ( Fig. 49 View FIGURES 41–52 ); 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 View FIGURES 53–65 ); outer lobe about 0.5x length of dorsal body, dorsal margin of outer lobe waved ( Fig. 56 View FIGURES 53–65 ) ..................................................... D. perparvus Alencar & Azevedo  

– Filament of ventral ramus straight ( Fig. 42 View FIGURES 41–52 ); outer lobe more than 0.5x length of dorsal body, dorsal margin of outer lobe sinuous ( Fig. 43 View FIGURES 41–52 ) ................................................... D. osseus Alencar & Azevedo  

5 (3). Dorsal body with apex divergent in ventral view ( Fig. 25 View FIGURES 17–27 , 50 View FIGURES 41–52 )............................................................6

– Dorsal body with apex convergent or straight in ventral view ( Fig. 6 View FIGURES 1–8 , 19 View FIGURES 17–27 )..........................................7

6 (5). Paramere wide subapically in dorsal view; dorsal body with apex angled in ventral view ( Fig. 50 View FIGURES 41–52 ); connector c-shaped apically; basal plate with upper margin with median projection to apex ( Fig. 49 View FIGURES 41–52 ). ............................................................................................................. D. paululus Alencar & Azevedo  

– Paramere wide basally in dorsal view; dorsal body with apex rounded in ventral view ( Fig. 25 View FIGURES 17–27 ); connector sinuous; basal plate simple ( Fig. 24 View FIGURES 17–27 ) .................................... D. divaricatus Alencar & Azevedo  

7 (5). Connector with apex of lateral expansion bifurcated ( Fig. 5 View FIGURES 1–8 , 80 View FIGURES 78–89 ).........................................................8

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

8 (7). Apex of filament slightly dilated ( Fig. 79 View FIGURES 78–89 ); dorsal body with three pairs of apical lobes ( Fig. 80 View FIGURES 78–89 )........ .............................................................................................................. D. refertus Alencar & Azevedo  

– Apex of filament not dilated ( Fig. 4 View FIGURES 1–8 ); dorsal body with two pairs of apical lobes ( Fig. 5 View FIGURES 1–8 ) .................... ............................................................................................................................. D. microstictus Evans  

9 (7). Filament of ventral ramus inserted apically ( Fig. 66 View FIGURES 66–77 , 91 View FIGURES 90–102 ), outer lobe of dorsal body with two concavities in dorsal view ( Fig. 67 View FIGURES 66–77 , 92 View FIGURES 90–102 )...........................................................................................................10

– Filament of ventral ramus inserted subapically ( Fig. 72 View FIGURES 66–77 , 79 View FIGURES 78–89 ), outer lobe of dorsal body not as above ( Fig. 18, 24 View FIGURES 17–27 , 36 View FIGURES 28–40 )...................................................................................................................................11

10 (9). Paramere very wide basally in lateral view ( Fig. 70 View FIGURES 66–77 ); outer lobe of dorsal body with ventral margin without apical corner dilated ( Fig. 68, 69 View FIGURES 66–77 ) .................................. 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 View FIGURES 90–102 ) ............................................. D. uncus Alencar & Azevedo  

11 (9). Basal bar with lateral margin folded mesad ( Fig. 18 View FIGURES 17–27 , 36 View FIGURES 28–40 )...................................................................12

– Basal bar without lateral margin folded mesad ( Fig. 73 View FIGURES 66–77 )....................................................................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 View FIGURES 17–27 ) ........................................ 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 View FIGURES 28–40 ) ................................................. D. incurvatus Alencar & Azevedo  

13 (11). Paramere very wide in middle in dorsal view ( Fig. 73 View FIGURES 66–77 ); apex of dorsal margin of outer lobe serrate in lateral view ( Fig. 75 View FIGURES 66–77 ); basal bar with upper margin concave ( Fig. 73 View FIGURES 66–77 ) ..... D. pilus Alencar & Azevedo  

– Paramere evenly wide in dorsal view ( Fig. 85 View FIGURES 78–89 ); apex of dorsal body without such projection in lateral view ( Fig. 87 View FIGURES 78–89 ); basal bar with upper margin tetradentate ( Fig. 85 View FIGURES 78–89 ) ..... D. signatus Alencar & Azevedo