Blaiseus Fleutiaux, 1931

Xie, Qi, Ruan, Yongying, Qiu, Lu, Zhang, Mengna, Peng, Yingying, Ma, Liya & Liu, Yang, 2025, A new species of genus Blaiseus Fleutiaux, 1931 from Guangdong, China (Coleoptera: Elateridae: Cardiophorinae), Zootaxa 5660 (3), pp. 403-412 : 405-406

Blaiseus Fleutiaux, 1931

Blaiseus Fleutiaux, 1931: 307 .

Type species. Blaiseus bedeli Fleutiaux, 1931 .

Distribution. China, Southeast Asia, South Africa and Central America.

Key to world Blaiseus species (updated based on Douglas, 2009)

1. Elytra with apex upturned in lateral view................................................................... 2 Elytral apex not upturned in lateral view................................................................... 4

2. Protibiae denticulate at midlength.............................................. B. zamoranoensis Douglas, 2009 Protibiae without denticle at midlength.................................................................... 3

3. Median lobe of aedeagus broadest near apex....................................... B. guatemalensis Douglas, 2009 Median lobe of aedeagus broadest near base........................................ B. chiapasensis Douglas, 2009

4. Protibiae denticulate at midlength........................................................................ 5 Protibiae without denticle at midlength.................................................................... 6

5. Median lobe apex slightly convex; width of median lobe (near apex) to paramere (near apex) ratio approx. 9.3 (based on Douglas (2009))............................................................... B. mexicanus Douglas, 2009 Median lobe apex strongly expanded; width of median lobe (near apex) to paramere ratio approx. 3.2 (based on Douglas (2009))......................................................................... B. laoensis Douglas, 2009

6. Protibiae not expanded apically................................................... B. malayensis Douglas, 2009 Protibiae expanded apically............................................................................. 7

7. Protibiae lacking posterior apical tooth.......................................... B. nothoafricanus Douglas, 2009 Protibiae with posterior apical tooth....................................................................... 8

8. Posterior margin of scutellar shield truncate........................................... B. bedeli Fleutianux, 1931 Posterior margin of scutellar shield acute................................................................... 9

9. Apical margin of median lobe truncate............................................. B. daklakensis Douglas, 2009 Apical margin of median lobe concave or arcuate........................................................... 10

10. Apical margin of median lobe concave at middle (Distribution: China)...................... B. fujianus Douglas, 2009 Apical margin of median lobe arcuate, not concave......................................................... 11

11. Elytra with discontinuous yellowish-brown patches from base to apex; width of median lobe (near apex) to paramere (near apex) ratio approx. 2.1 (Distribution: China)................................... B. hainanensis Qiu et Douglas, 2017 Elytra feature continuous yellowish-brown patches from base to apex; width of median lobe (near apex) toparameres (near apex) ratio approx. 2.9 (Distribution: China).............................................. B. dinghuensis sp. nov.