Key to species of Dolichurus Latreille from the Indian subcontinent

(Modified from Tsuneki 1992; Girish Kumar and Sheikh 2018; females unknown in D. chareshi sp. nov., D. gilberti and D. venkataramani)

1. Female............................................................................................. 2

- Male............................................................................................... 9

2. T4–T6 black; clypeus with or without median carina......................................................... 3

- T4–T6 reddish brown (Fig. 30); clypeus with median longitudinal carina on basal half.................. D. gilberti Turner

3. Clypeus with median longitudinal carina nearly reaching apical margin.......................... D. taprobanae Smith

- Clypeus without any such median carina, if present, then weak and restricted to basal half............................ 4

4. Sternaulus on mesopleuron distinct....................................................................... 5

- Sternaulus on mesopleuron indistinct or lacking............................................................. 7

5. Clypeus, frons, pronotum and scutellum with long macrosetae; clypeus black, without white markings.................. 6

- Clypeus, frons, pronotum and scutellum without such macrosetae; clypeus with white markings (Fig. 32)................................................................................................. D. albifacies Krombein

6. Distinct anterior bordering transverse carina present on pronotal collar (Fig.19)............................................................................................... D. sahyadriensis Anagha and Girish Kumar sp. nov.

- Anterior bordering transverse carina absent on pronotal collar................................. D. silvicola Krombein

7. Anterior bordering transverse carina absent on pronotal collar.................................................. 8

- Distinct anterior bordering transverse carina present on pronotal collar (Fig. 31).......... D. amamiensis Tsuneki and Iida

8. Vertex flat; frons coarsely sculptured with large subcontiguous punctures (Fig. 34); mandible, except apex, and fore tibia dark.............................................................................. D. lankensis Krombein

- Vertex arched; frons moderately sculptured with larger punctures confluent in longitudinal rows along inner eye margin, tiny punctures adjacent to frontal platform and a small impunctate areas halfway between anterior ocellus and frontal platform (Fig. 33); mandible and fore tibia beneath light red.............................................. D. aridulus Krombein

9. Clypeus black without white markings, T1 and T2 with or without impunctate area................................ 10

- Clypeus with white markings; T1 and T2 with large impunctate areas.......................... D. albifacies Krombein

10. T1 and T2 entirely punctured........................................................................... 11

- Coarse punctures absent on posterior third of T1 and T2...................................................... 16

11. Mesopleuron rugulose reticulate (Fig. 36)................................................................. 12

- Mesopleuron differently sculptured...................................................................... 14

12. Distinct anterior bordering transverse carina present on pronotal collar.................. D. amamiensis Tsuneki and Iida

- Anterior bordering transverse carina absent on pronotal collar................................................. 13

13. Clypeus with median carina reaching apical margin; hind basitarsus paler than the remaining tarsal segments............................................................................................... D. aridulus Krombein

- Clypeus without median carina; hind basitarsus not conspicuously paler than the remaining tarsal segments................................................................................................ D. lankensis Krombein

14. Mesopleuron shiny with scattered tiny setaceous punctures (Fig. 35); frontal platform broader than long............... 15

- Mesopleuron shiny with distinct coarse setaceous punctures, punctures in median region with widened interspaces (Fig. 5); frontal platform as broad as long.................................... D. chareshi Anagha and Girish Kumar sp. nov.

15. Punctures of T1–T3 mostly separated by the average puncture diameter.......................... D. taprobanae Smith

- Punctures of T1–T3, especially on T1, scattered and, in the median region, separated by 2 to 3× the average puncture diameter............................................................. D. venkataramani Girish Kumar and Sheikh

16. Anterior bordering transverse carina absent on pronotal collar; T1–T3 with punctures separated by less than the average puncture diameter........................................................................ D. silvicola Krombein

- Distinct anterior bordering transverse carina present on pronotal collar (Fig. 12); T1–T3 with punctures separated by more than the average puncture diameter (Fig. 15)........................... D. sahyadriensis Anagha and Girish Kumar sp. nov.