Dolichurus Latreille, 1809

Anagha, S., Kumar, P. Girish & Sureshan, P. M., 2020, Additions to the knowledge of the genus Dolichurus Latreille (Hymenoptera Ampulicidae) from India with the description of two new species, Zootaxa 4821 (1), pp. 121-134 : 122-123

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.

Figures

FIGURES 30–36. 30. Dolichurus gilberti Turner, ♀ Metasoma; 31. Dolichurus amamiensis Tsuneki and Iida, ♀ Mesosoma; 32. Dolichurus albifacies Krombein, ♀ Clypeus; 33. Dolichurus aridulus Krombein, ♀ Head, frontal view; 34. Dolichurus lankensis Krombein, ♀ Head, frontal view; 35. Dolichurus taprobanae Smith, ♂ Mesopleuron; 36. Dolichurus aridulus Krombein, ♂, Mesopleuron.

FIGURES 16–22. Dolichurus sahyadriensis Anagha and Girish Kumar sp. nov. Paratype ♀. 16. Habitus, lateral view; 17. Head, frontal view; 18. Antenna; 19. Mesosoma, dorsal view; 20. Mesosoma, lateral view; 21. Fore wing; 22. Metasoma, dorsal view.

FIGURES 1–7. Dolichurus chareshi Anagha and Girish Kumar sp. nov. Holotype ♂. 1. Habitus, lateral view; 2. Head, frontal view; 3. Lower half of head, frontal view; 4. Mesosoma, dorsal view; 5. Mesosoma, lateral view; 6. Fore wing; 7. Metasoma, dorsal view.

FIGURES 8–15. Dolichurus sahyadriensis Anagha and Girish Kumar sp. nov. Holotype ♂. 8. Habitus, lateral view; 9. Head, frontal view; 10. Antenna; 11. Clypeus; 12. Mesosoma, dorsal view; 13. Mesosoma, lateral view; 14. Fore wing; 15. Metasoma, dorsal view.