Key to the females of Ephucilla of the world

(Unknown for E. cheni, E. drupa, E. guentheri, E. naja, E. panfilovi, E. undata and E. yuliana)

1. Dorsum of pronotum with a pair of more or less developed teeth on anterior margin; T2 with bluish metallic luster........ 2

- Pronotum without such teeth; T2 black.................................................................... 6

2. Head black; gena with large confluent punctures; mandible with two inner denticles; lateral margins of mesosoma convergent posteriorly; T1 black; T2 without pale setal spot............................................................. 3

- Head yellowish red; gena with minute sparse punctures; mandible without inner denticles; lateral margins of mesosoma subparallel; T1 yellowish red; T2 with basomedial elongate spot of pale golden setae; species from Vietnam and Indonesia ............................................................................................ E. bacbo (Lelej)

3. Frons and vertex punctate, intervals smooth; humeral carina lamellately projecting dorsally; width of scutellar scale more than 2.0 × its length and diameter of nearby punctures............................................................ 4

- Frons and vertex longitudinally puncto-striate, intervals micro-punctate; humeral carina weakly developed; width of scutellar scale 1.0 × its length and diameter of nearby punctures; species from Amami-ôshima, Japan .......... E. yoshitakei sp. nov.

4. Dorsal pronotal tooth apically pointed; humeral carina dorsally tuberculate........................................ 5

- Dorsal pronotal tooth small rounded; humeral carina dorsally rounded; species from Taiwan ............ E. thalia (Mickel)

5. Dorsal pronotal tooth small; species from Okinawa-jima Is., Japan ................................ E. suginoi sp. nov.

- Dorsally pronotal tooth large; species from Yaeyama Isls., Japan ............................... E. brevitegula sp. nov.

6. Dorsum of pronotum with a pair of sublateral inconspicuous patches of appressed white setae; T1 yellowish red; T2 with baso- medial elongate spot of white setae; punctures on S2 large; species from India and Sri Lanka ..... E. poonaensis (Cameron)

- Pronotum without setal patch; T1 black; T2 without setal spot; punctures on S2 minute; species from Indochina.................................................................................................... E. viet (Lelej)