Hydaticus (Prodaticus)

Megna, Yoandri S., Balke, Michael, Apenborn, Rico & Hendrich, Lars, 2019, A review of Peruvian diving beetles of the genus Hydaticus Leach, 1817, with description of Hydaticus (Prodaticus) panguana sp. nov. and notes on other Neotropical species (Coleoptera: Dytiscidae), Zootaxa 4615 (1), pp. 113-130 : 127-128

publication ID

https://doi.org/10.11646/zootaxa.4615.1.5

publication LSID

lsid:zoobank.org:pub:2A000D68-CA54-4077-AA8C-50B4455E6A23

DOI

https://doi.org/10.5281/zenodo.4330435

persistent identifier

https://treatment.plazi.org/id/0382E754-E76B-FFBF-FF22-FB40FA78F9E2

treatment provided by

Felipe

scientific name

Hydaticus (Prodaticus)
status

 

Key to the species of subgenus Hydaticus (Prodaticus) of the Neotropical Region

1. Elytron with a transverse and subbasal yellowish fascia ( Fig. 1 View FIGURE 1 . Tbf)............................................. 2

- Elytron without a transverse and subbasal yellowish fascia ( Fig. 2A View FIGURE 2 )............................................. 5

2. Pronotum yellowish with a black band on anterior and posterior margin ( Fig. 1 View FIGURE 1 , Abb, Pbb)............................ 4

- Pronotum black with broad yellowish lateral margins ( Fig. 2B View FIGURE 2 )................................................. 3

3. Elytron with basal fasciae confluent with sublateral, longitudinal and yellowish stripes; elytron without a subtriangular, postmedial and broad spot.......................................................................... H. devexus

- Elytron usually with basal fasciae not confluent with sublateral, longitudinal and yellowish stripes; elytron with a subtriangular, postmedial and broad spot ( Fig. 2B View FIGURE 2 )............................................................... H. lateralis

4. TL 11.4–12.6 mm; pronotum with basal black band narrowly extended to anterior margin; elytron without sublateral yellow stripes, and with a large lateral spot just behind middle; apical third largely irrorated; protarsomere I with a series of spines across the dorsal surface; metatibia with bifid setae not parallel to dorsal margin on posterior surface ( Fig. 2C View FIGURE 2 ).................................................................................................... H. subfasciatus

- TL 9.6–10.4 mm; pronotum with basal black band not extended; elytron with sublateral and lateral yellow stripes, and without lateral spots; apical third largely rufous ( Fig. 3D View FIGURE 3 ); protarsomere I without a series of spines across the dorsal surface; metatibia with bifid setae parallel to dorsal margin on posterior surface....................................... H. xanthomelas

5. Pronotum black with yellowish lateral margins ( Fig. 2A View FIGURE 2 )...................................................... 6

- Pronotum yellowish with a black band on anterior and posterior margin ( Fig. 1 View FIGURE 1 , Abb, Pbb)............................ 7

6. Elytron with lateral, longitudinal and yellowish stripes, and without a subtriangular, postmedial and broad spot.. H. tuyuensis

- Elytron without lateral, longitudinal and yellowish stripes, and with a subtriangular, postmedial and broad spot ( Fig. 2A View FIGURE 2 )...................................................................................... H. panguana sp. nov.

7. Protarsus without accessory medial spinous setae on dorsal surface of basal tarsomere of male; elytron without lateral yellow stripes..................................................................................... H. fractivittis

- Protarsus with accessory medial spinous setae on dorsal surface of basal tarsomere of male; elytron with lateral yellow stripes ( Fig. 1 View FIGURE 1 , Ls)........................................................................................... 8

8. Distribution: Colombia, Ecuador, Brazil, Paraguay and Argentina median lobe of aedeagus rounded apically in lateral view... ................................................................................................... 9

- Distribution: USA, Central America and West Indies; median lobe of aedeagus angulate or truncated apically in lateral view. .................................................................................................. 10

9. TL 10.8–12.5 mm; epipenite with apex rounded; median lobe of aedeagus in apical third greatly widened and rounded in dorsal view.................................................................................. H. inexspectatus

- TL 13.0– 13.6 mm; epipenite with apex acute; median lobe of aedeagus in apical third subparallel and slightly rounded in dorsal view....................................................................................... H. palliatus

10. Median lobe of aedeagus angulate at apex in lateral view; each elytron with a definite and regular submarginal yellow stripe, more or less recurved at the base, without inward extensions; posterior black band of pronotum usually restricted to basal third; anterior disc of metatibiae generally with more than 10 large spines.................................. H. bimarginatus

- Median lobe of aedeagus truncate apically in lateral view; each elytron with a submarginal stripe usually broad, sometimes with inward extensions ( Fig. 3C View FIGURE 3 ); posterior black band of pronotum often extended to or almost to anterior margin; anterior disc of metatibiae generally with less than 10 large spines.................................................... H. rimosus

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Dytiscidae

Genus

Hydaticus