Hydaticus xanthomelas ( Brullé, 1837 ),

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: 118-122

publication ID

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

publication LSID

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

DOI

http://doi.org/10.5281/zenodo.4330437

persistent identifier

http://treatment.plazi.org/id/0382E754-E760-FFB9-FF22-FAD4FCC6FAB8

treatment provided by

Felipe

scientific name

Hydaticus xanthomelas ( Brullé, 1837 )
status

 

Hydaticus xanthomelas ( Brullé, 1837) 

( Figs. 2DView FIGURE 2, 7View FIGURES 4–7)

Dytiscus xanthomelas Brullé, 1837: 47  .

Hydaticus xanthomelas ( Brullé, 1837)  ; Aubé 1838:181; Trémouilles 1996:18; Benetti & Hamada 2003: 704; Ferreira (Jr.) & Braga 2009: 324; Miller & Bergsten 2014: 74; Miller & Bergsten 2016: 119; Nilsson & Hájek 2019: 97.

Hydaticus rectus Sharp 1882a: 655  ; synonymy by Trémouilles 1996: 18.

Type locality. Argentina, Paraná river , Corrientes  .

Material examined. PERU: “Peru, Huánuco Department, Yuyapichis, Panguana Stat. , 2.- 18.10.2009, - 9.616667S, - 74.9333W, Burmeister leg.”, 1 ex., ( ZSM)GoogleMaps  ; “ Peru, Huánuco Department, Panguana, Yuyapichis river , 25.vii.2013, - 9.616667S, - 74.9333W, at light, R. Apenborn leg.”, 2 exs., ( ZSM)GoogleMaps  . PARAGUAY: “Paraguay, Dept. Central , Asuncion, 2.X.1992, leg. Drechsel ”, 8 exs., ( CGW)  ; “ Paraguay, Dept. Guaira, Garay , 13.-15.X.1992, leg. Drechsel ”, 1 ex., ( CGW)  ; “ Paraguay, Chaco Department Hayes, Montelindo , 2.xi.1991, U. Drechsel leg.”, 15 exs., ( CLH, ZSM)  ; “ Paraguay, Amanbay P. N., Cerro Cora , 10.ii.1997, Drechsel leg.”, 3 exs. ( CLH)  ; “ Paraguay, Chaco Department Hayes, Pozo Colorado , Drechsel leg.”, 2 exs., ( CLH)  ; “ Paraguay, Central Department, Capiatá , ii.1995 ”, 5 exs., ( NMW)  ; “ Paraguay, Central Department, Cerro Lambaré , 1-xi.1992, Drechsel leg.”, 17 exs., ( NMW)  ; “ Paraguay, Guairá Department, Garay , 6-x.1992, Drechsel leg.”, 7 exs., ( NMW)  . BRAZIL: “Brasilien, São Paulo, Sammlung A. Zimmermann ”, 1 ex., ( ZSM)  ; “ Brasilien, São Paulo, Tiete Floresta , 17.x. 1900, Sammlung A. Zimmermann”, 1 ex., ( ZSM)  ; “ Brasilien, Sammlung A. Zimmermann”, 1 ex., ( ZSM)  .

Diagnosis. TL= 9.6–10.4 mm; TL-H = 8.9–9.7 mm; MW 4.9–5.4 mm; pronotum testaceous with a black band on the anterior and posterior margin; elytron with basal fasciae not confluent with subbasal, longitudinal and yellowish stripe ( Fig. 2DView FIGURE 2); elytron with sublateral and lateral yellow stripes together or separate, forming a lateral and broad longitudinal band. Protarsomere I without a series of spines across the dorsal surface; metatibia with bifid setae parallel to dorsal margin on posterior surface; median lobe of aedeagus with apex rounded in lateral view, and sinuate on preapical dorsal margin ( Fig. 7View FIGURES 4–7).

Differential diagnosis. Hydaticus xanthomelas  is the smallest Neotropical species of the genus, which can easily be used to separate it from the other species with basal fasciae on elytra, such as H. devexus  , H. lateralis  and H. subfasciatus  .

Distribution. Hydaticus xanthomelas  has been recorded for Brazil, Bolivia, Paraguay and Argentina ( Trémouilles 1996; Benetti & Hamada 2003; Ferreira (Jr.) & Braga 2009; Miller & Bergsten 2014). Its range of distribution has extended now northwards to Peru.

Ecology. Hydaticus xanthomelas  was collected in lowland rivers and smaller streams, rich in submerged and emerged vegetation ( Trémouilles 1996). The two specimens from Panguana were collected at light, not far away from an open cattle farming area near the research station.

ZSM

Bavarian State Collection of Zoology

NMW

Naturhistorisches Museum, Wien

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Dytiscidae

Genus

Hydaticus

Loc

Hydaticus xanthomelas ( Brullé, 1837 )

Megna, Yoandri S., Balke, Michael, Apenborn, Rico & Hendrich, Lars 2019
2019
Loc

Hydaticus xanthomelas ( Brullé, 1837 )

Nilsson, A. N. & Hajek, J. 2019: 97
Miller, K. B. & Bergsten, J. 2016: 119
Miller K. B. & Bergsten, J. 2014: 74
Braga, R. B. 2009: 324
Benetti, C. J. & Hamada, N. 2003: 704
2003
Loc

Hydaticus rectus

Tremouilles, E. R. 1996: 18
Sharp, D. 1882: 655
1882
Loc

Dytiscus xanthomelas Brullé, 1837: 47

Brulle G. A. 1837: 47
1837