Eumenes Latreille, 1852

Sureshan, Pavittu M., 2017, A taxonomic review of the Indian species of the genus Eumenes Latreille (Hymenoptera: Vespidae: Eumeninae), Zootaxa 4317 (3), pp. 469-498 : 470-471

Key to the Indian species of Eumenes Latreille

1. T1 very long (4.5-5.0 mm), lateral margins of postpetiolus substraight and parallel ( Figs 25, 29 , 77 ); head much wider than long ( Figs 26 , 74 ); temple without hairs.................................................................... 2

- T1 of normal length (3.0-3.5 mm), pyriform (pear-shaped) ( Figs 4 , 12, 20, 35, 40, 48, 56, 64); head slightly wider than long ( Figs 2 , 10, 18, 38, 46, 54, 62); temple with hairs............................................................ 5

2. T1, in profile view, distinctly swollen in apical half; antero-lateral angles of pronotum more prominent; scape of male antennae very broad........................................................................... antennatus Bingham

- T1, in profile view, not swollen in apical half ( Figs 25 , 73 ); antero-lateral angles of pronotum less prominent; scape of male antennae not very broad, normal.......................................................................... 3

3. Clypeus yellow; scape ventrally yellow; pronotum mostly yellow, black near tegulae; scutellum with yellow marks; ventral side of petiole with two long yellow stripes which occupy the entire apex and merge with apical band on dorsal side; S2 yellow except at base............................................................................ comberi Dover

- Clypeus black; scape entirely black; pronotum mostly black except narrow yellow transverse band on anterior and posterior apex of dorsal face; scutellum without yellow marks; ventral side of petiole without yellow stripes; S2 entirely black...... 4

4. Punctures on T2 at apex, before apical lamella, very thick and dense ( Fig. 30 ); apex of clypeus narrower and more weakly emarginate, with rounded apical teeth ( Fig. 26 ); mesepisternum, tegula, metanotum and propodeum with yellow markings........................................................................................ belli Giordani Soika

- Punctures on T2 at apex, before apical lamella, sparse, integument almost smooth in middle ( Fig. 78 ); apex of clypeus broader and less weakly emarginate, with sharper apical teeth ( Fig. 74 ); mesepisternum, tegula, metanotum and propodeum without yellow markings................................................................. sikkimensis Giordani Soika

5. T2 with long erect hairs, at least at base, about as long as those of T1 ( Figs 1, 6 , 45, 50).............................. 6

- T2 with hairs very short, much shorter than those of T1 (Figs 9, 14, 18, 31, 37, 53, 61, 71)............................ 7

6. S2 with many whitish hairs, about as long as those of T2 ( Figs 1, 6 ); T2 with long glossy hairs ( Fig. 5 ); punctures on T2 very small and sparse, interspaces much larger than diameter of punctures ( Fig. 5 )................... affinissimus de Saussure

- S2 with very short hairs, erect long hairs absent (Fig. 45); T2 at base with medium length hairs, rest with much shorter hairs; punctures on T2 larger and denser ( Fig. 49 )............................................. persimilis Giordani Soika

7. Lateral margin of tegula with a distinct emargination in anterior third ( Fig. 55 ); dorsal surface of pronotum almost flat; meta-

soma extensively ferruginous (Fig. 53).......................................................... placens Nurse - Tegula normal, lateral margin without emargination in anterior third; dorsal surface of pronotum convex as usual; metasoma either little ferruginous or different........................................................................ 8

8. T2, in profile view, strongly gibbous in middle, strongly impressed preapically, its apical margin strongly reflected (Fig. 9); body black with dark red markings (with an orange-yellow spot on interantennal space).......... assamensis Meade-Waldo

- T2, in profile view, not or little swollen in middle, weakly impressed preapically, its apical margin slightly reflected (Figs 18, 31, 37, 61, 71); body colour pattern different................................................................ 9

9. Punctation of T2 fine and dense ( Fig. 36 ); propodeum and T1 extensively ferruginous; clypeus of ♂ more elongate ( Fig. 32, 33 )...................................................................................... kangrae Dover

- Punctation of T2 coarser and less dense ( Figs 21 , 41 , 66 , 72); propodeum and T1 not ferruginous; clypeus of ♂ shorter ( Figs 24 , 43 , 67 , 69)....................................................................................... 10

10. Legs almost entirely ferruginous (except coxae and trochanter, black), rarely with few yellow markings on fore and mid leg...................................................................................... macrops de Saussure

- Legs black with yellow marks........................................................................... 11

11. Apex of T1 with a wide yellow band, and a pair of brownish marks in the yellow band ( Fig. 64 )..... pomiformis (Fabricius)

- Apex of T1 just with a narrow yellow band ( Figs 20 , 72)..................................................... 12

12. Three well separated narrow yellow transverse marks on pronotum ( Fig. 19 ); scape entirely black (Fig. 18).................................................................................................. atrophicus (Fabricius)

- Uninterrupted broad yellow transverse band on pronotum (Fig. 70); ventral side of scape yellow (Fig. 69).............. 13

13. Apical margins of T3 & T4 with yellow marks............................................. punctatus de Saussure

- Apical margins of T3 & T4 without yellow marks............................................... buddha Cameron

Figures

FIGURES 25 – 30. Eumenes belli Giordani Soika, ♀. 25, Body, lateral view. 26, Head, frontal view. 27, Antenna. 28, Head and mesosoma, dorsal view. 29, Petiole, dorsal view. 30, Metasoma except petiole, dorsal view.

FIGURES 73 – 78. Eumenes sikkimensis Giordani Soika, ♀. 73. Body, lateral view. 74, Head, frontal view. 75, Antenna. 76, Head and mesosoma, dorsal view. 77, Petiole, dorsal view. 78, T 2, dorsal view.

FIGURES 1 – 6. Eumenes affinissimus de Saussure. 1 – 5 ♀. 1, Body, lateral view. 2, Head, frontal view. 3, Head and mesosoma, dorsal view. 4, Petiole, dorsal view. 5, T 2, dorsal view. 6, ♂, Body, lateral view.

FIGURES 49 – 52. Eumenes persimilis Giordani Soika. 49 ♀, T 2, dorsal view. 50 – 52 ♂. 50, Body, lateral view. 51, Apical antennal articles. 52, Metasoma dorsal view. FIGURES 53 – 54. Eumenes placens Nurse, ♀. 53, Body, lateral view. 54, Head, frontal view.

FIGURES 55 – 60. Eumenes placens Nurse. 55 – 57 ♀. 55. Head and mesosoma, dorsal view. 56, Petiole, dorsal view. 57, T 2, dorsal view. 58 – 60 ♂. 58, Body, lateral view. 59, Head, frontal view. 60, Clypeus, frontal view.

FIGURES 31 – 36. Eumenes kangrae Dover, ♂. 31, Body, lateral view. 32, Head, frontal view. 33, Clypeus. 34, Antenna. 35, Head, mesosoma and petiole, dorsal view. 36, T 2, dorsal view.

FIGURES 19 – 24. Eumenes atrophicus (Fabricius). 19 – 21 ♀. 19, Head and mesosoma, dorsal view. 20, Petiole, dorsal view. 21, T 2, dorsal view. 22 – 24 ♂. 22, Body, lateral view. 23, Head, frontal view. 24. Clypeus, frontal view.

FIGURES 37 – 42. Eumenes macrops de Saussure. 37 – 41 ♀. 37, Body, lateral view. 38, Head, frontal view. 39, Head and mesosoma, dorsal view. 40, Petiole. 41, T 2, dorsal view. 42 ♂, Body, lateral view.

FIGURES 61 – 66. Eumenes pomiformis (Fabricius). 61 – 65 ♀. 61. Body, latera view. 62, Head, frontal view. 63, Head and mesosoma, dorsal view. 64, Petiole, dorsal view. 65, T 2, dorsal view. 66, ♂, Body, lateral view.

FIGURES 43 – 44. Eumenes macrops de Saussure, ♂. 43, Head, frontal view. 44, Apical antennal articles. FIGURES 45 – 48. Eumenes persimilis Giordani Soika, ♀. 45, Body, lateral view. 46, Head, frontal view. 47, Head and mesosoma, dorsal view. 48, Petiole.

FIGURES 67 – 68. Eumenes pomiformis (Fabricius), ♂. 67. Head, frontal view. 68. Apical antennal articles. FIGURES 69 – 72. Eumenes punctatus de Saussure, ♂. 69, Head, frontal view. 70, Head and mesosoma, dorsal view. 71, Metasoma, lateral view. 72, T 2, dorsal view.