Key to Colombian species of Eiphosoma Cresson, 1865

1 Mesosoma predominantly or entirely black (Figs 16, 23, 58)................................................... 2

- Mesosoma predominantly yellow (Figs 2, 9, 30, 37, 44, 51, 65, 72, 79, 86, 93, 100)................................. 4

2 Mesosoma entirely black (Fig. 16); scutellum and metapleuron entirely punctate; propodeum centrally smooth (Figs 18–19).............................................................................. E. nigrum (Szépligeti, 1906)

- Mesosoma with at least pronotum and propodeum with yellow marks, scutellum smooth and metapleuron punctate only on upper part; propodeum striate............................................................................ 3

3 Anterior transverse carina of the propodeum without angulations (Fig. 26); scutellum and mesoscutellum completely black, without raised lateral longitudinal scutellar carina (Fig. 25); fore wing with apex darkened......... E. bogan Gauld, 2000 *

- Anterior transverse carina of the propodeum with angulations (Fig. 61); scutellum yellow with only a black posterior part, scutellar longitudinal carina laterally elevated; mesoscutellum black with yellow marks at level of notaulus (Figs 60–61); fore wing completely hyaline.................................................................... E. rumi sp. nov.

4 Metapleuron entirely punctate (Figs 2, 9), fore wing with distal region of M vein absent (Figs 6, 13), pleural carina incomplete (Figs 2, 9)........................................................................................... 5

- Metapleuron with punctate upper part; fore wing with distal region of M vein present; pleural carina complete (Figs 16, 23, 30, 37, 44, 51, 58, 65, 72, 79, 86, 93, 100).................................................................... 6

5 Propodeum with posterior transverse carina present (Fig. 5); scutellum without punctures (Fig. 4); pronotum with punctate upper part; mesopleuron with a discontinuously striate central diagonal stripe (Fig. 2)........ E. dentator (Fabricius, 1804)

- Propodeum with posterior transverse carina present only centrally (Fig. 12); scutellum punctate vaguely only in anterior part (Fig. 11); pronotum completely punctate; mesopleuron with strongly striate central diagonal stripe (Fig. 9)............................................................................................... E. interpunctum sp. nov.

6 Pubescence long and conspicuous on basal flagellomeres and face (Fig. 72), mesopleuron and legs; fore wing hyaline with darkened apex (Figs 27, 41, 69, 76, 97).................................................... E. fuzhi Gauld, 2000

- Pubescence short on basal flagellomeres and face (Figs 2, 9, 16, 23, 30, 37, 44, 51, 58, 65, 79, 86, 93, 100), mesopleuron and legs; fore wing completely hyaline without darkened apex (Figs 6, 13, 20, 34, 48, 55, 62, 83, 90, 104).................. 7

7 Metapleuron short, submetapleural carina short and deep (Figs 79, 86)........................................... 8

- Metapleuron moderately long, submetapleural carina shallow (Figs 30, 37, 44, 51, 65, 93, 100)...................... 10

8 Mesopleuron entirely yellow, at most with a black dot near the trailing edge.................. E. vitticolle Cresson, 1865

- Mesopleuron with diagonal black stripe continuous or discontinuous (Figs 2, 9, 30, 37, 44, 51, 65, 72, 79, 86, 93, 100)..... 9

9 Propodeum smooth and polished, with anterior and posterior carina present (Fig. 82); mesoscutum yellow, completely punctate with two lateral black stripes and one central stripe extending from anterior to base of scutellum (Fig. 81)......................................................................................... E. laphygmae Costa Lima, 1953

- Propodeum striate to coriaceous, with anterior and posterior transverse carina absent (Fig. 89); mesoscutum predominantly black, centrally punctate, lateral lobes only punctate anteriorly, with two small yellow marks anterior to notaulus (Fig. 88)................................................................................. E. sinecarenatum sp. nov.

10 Fore wing with apex darkened (Figs 27, 41, 69, 76, 97)...................................................... 11

- Fore wing entirely hyaline (Figs 6, 13, 20, 34, 48, 55, 62, 83, 90, 104).......................................... 12

11 Fore wing without areolet or rarely present in lenticular form, with the vein 1 m -cu touching the upper of vein 3 rs- m (Fig. 69); propodeum with posterior transverse carina incomplete and delimited petiole area (Fig. 68)...... E. tantalium Gauld, 2000

- Fore wing with areolet quadrangular or triangular with vein 1 m-cu located below the upper part of vein 3 rs-m (Figs 41, 97); propodeum with posterior transverse carina complete and without delimited area petiolaris (Figs 40, 96)............... 15

12 Fore wing with areolet................................................................................ 13

- Fore wing without areolet............................................................................. 14

13 Propodeum rugose-punctate, with anterior and posterior transverse carina complete, with a central black band attached to the transverse band, touching the area petiolaris, without lateral bands (Fig. 103)............... E. minense Costa Lima, 1953

- Propodeum centrally rugose, with complete anterior and incomplete posterior transverse carinae, with a central black band separated from the transverse band (Fig. 54)....................................... E. fluminense Costa Lima, 1953

14 Propodeum striate with anterior transverse carina weak and barely present in central area, posterior carina absent (Fig. 47); pronotum with the upper extremity of the epomia strongly elevated (Fig. 44); ovipositor short, equal to length of hind posterior tibia (Fig. 43)........................................................................... E. eneke sp. nov.

- Propodeum striate and wrinkled with transverse anterior carina complete and strong, posterior carina present only in the central area (Fig. 33); pronotum with the upper extremity of the weakly raised epomia (Fig. 30); ovipositor straight, 1.7 × times longer than hind tibia (Fig. 29)................................................................. E. caqueta sp. nov.

15 Sternaulus strongly marked anteriorly (Fig. 37); scutellum without punctures; hind coxa without black mark.............................................................................................. E. dolopon Gauld, 2000

- Sternaulus moderately marked anteriorly (Fig. 93); scutellum punctate; hind coxa with black mark.................................................................................................. E. macrum (Enderlein, 1921)