Dasyproctus

Binoy, C. & Kumar, P. Girish, 2024, Dasyproctus yesudasi sp. nov. (Hymenoptera, Crabronidae, Crabroninae), a new square-headed moustache wasp from south India, Zootaxa 5512 (1), pp. 136-150 : 137-138

Modified Key to Indian Dasyproctus (from Binoy et al. 2021b)

Females

(Female unknown for D. attenboroughi , D. yesudasi sp. nov., D. oppidanus Leclercq , D. niger & D. tsunekii )

1. Anterior carina of pronotal collar bending towards insertion of fore coxa......................................... 2

– Anterior carina of pronotal collar laterally curving towards pronotal lobe......................................... 3

2. Frons and vertex with distinct impressed punctation; IOC indistinct; brownish translucent lamellar expansion present on scapal basin; deep excavation beyond IOC....................................................... idrieus (Cameron)

– Frons and vertex matt, punctation shallow; IOC well defined; scapal basin without lamellar expansion; excavation beyond IOC absent............................................................................... buddha (Cameron)

3. Legs black with yellow markings........................................................................ 4

– Legs ferruginous with yellow markings [Gt3 and Gt4 immaculate]................................. pulveris (Nurse)

4. Head, mesosoma and metasoma (at least on Gt1) with spaced uniform punctures, setae sparse; clypeus dentate medio-apically; scutellum and terga with yellow markings................................................................. 5

– Head and mesosoma with irregular deep pits and dense setae; clypeus medio-apically truncate, slightly bevelled; scutellum and terga entirely black................................................ leclercqi Binoy, Girish Kumar & Santhosh

5. Clypeus either bidentate or truncate with sharp lateral indentations; POD subequal to OOD.......................... 6

– Clypeus quadridentate, with median indentation formed by overhanging prolongation of median carina; POD distinctly shorter than OOD............................................................................. pentheri Leclercq

6. Apical margin of clypeus truncate; metasoma immaculate [large species (11 mm); hind femur markedly angulate dorsally; scutellum with conspicuous large pits]...................................................... opifex (Bingham)

– Apical margin of clypeus distinctly dentate, with or without lateral emargination; metasoma with yellow macula on Gt 1 ... 7

7. Prepectus black...................................................................................... 8

– Prepectus with yellow patch [spot between IOC and median ocellus absent; punctation on mesopleuron similar to that of the head, mesosoma and metasoma].............................................. geethae Binoy & Girish Kumar

8. Metasoma with Gt 1 and Gt 3 immaculate................................................................... 9

– Gt 1 and Gt 3 with distinct yellow macula [punctation on mesopleuron, mesosoma and metasoma different from that of head].................................................................................... helenae Saini & Dey

9. Clypeus deeply emarginate medio-apically, emargination deeper than wide, no lateral denticle........... agilis (F. Smith)

– Clypeus with shallower emargination medio-apically, emargination wider than deep, often with separate obtuse, lateral denticle........................................................................... orientalis (Cameron)

Males

(Male unknown for D. buddha (Cameron) , D. leclercqi Binoy, Girish Kumar & Santhosh and D. helenae Saini & Dey )

2. First metasomal segment not longer than following three segments combined..................................... 3

– First metasomal segment distinctly longer than following three segments combined................ oppidanus Leclercq

3. Flagellomeres 2–4 prominently arched; mandible, terga, and legs without yellow maculation; scape brownish black with faint yellow marking; frons distinctly reticulate punctate, not depressed beyond IOC..................... opifex (Bingham)

– Flagellomeres 2–4 cylindrical; other characters in different combination......................................... 4

4. Gt

1 distinctly punctate................................................................................ 5

– Gt 1 impunctate (at most setigerous micropunctures present)................................................... 6

5. POD distinctly shorter than OOD; Gt

2 impunctate............................................. pentheri Leclercq

– POD subequal to OOD; Gt 2 finely punctate...................................... geethae Binoy & Girish Kumar

6. Clypeus with distinct median carina...................................................................... 7

– Clypeus without carina............................................................................... 10

7. IOC usual, not differentiated into lamellar expansion; no dorsal excavation beyond IOC............................. 8

– IOC differentiated into brownish, translucent lamellar expansion; deep excavation present beyond IOC.. idrieus (Cameron)

8. Pronotal collar and pronotal lobe with yellow markings; metasoma maculate at least on Gt 5 .......................... 9

– Mesosoma black except on ventral part of pronotal lobe; metasoma immaculate.. niger Binoy, Santhosh & Girish Kumar

9. Scutellum and axilla yellow; distinct yellow markings present on Gt 1, Gt 2 and Gt 4; maculae on Gt 5 meeting medially; Gt 6 with transverse yellow band basally; clypeus medially produced into sharp acute tooth, median carina conspicuous.............................................................................................. orientalis (Cameron)

– Scutellum and axilla black; metasoma with Gt 1 –Gt 4 immaculate; Gt 5 with faint macula laterally; Gt 6 immaculate; clypeus apico-medially produced forward; truncate, slightly bevelled, median carina rudimentary.................... yesudasi sp. nov.

10. Clypeus apico-medially truncate; Gt

1 bimaculate............................................... agilis (F. Smith)

– Clypeus apico-medially emarginate (in form of inverted V); Gt 1 immaculate..................................... 11

11. Area beyond IOC declivous, distinct furrow beyond declivity onto frons, almost reaching anterior ocellus; all terga except Gt 5, immaculate...................................................... tsunekii Binoy, Girish Kumar & Santhosh

– No declivity or furrow beyond IOC; Gt 2, Gt 4 and Gt 5 maculate......... attenboroughi Binoy, Santhosh & Girish Kumar