Megadytes (Bifurcitus) magnus Trémouilles & Bachmann, 1980

Hendrich, Lars, Manuel, Michael & Balke, Michael, 2019, The return of the Duke - locality data for Megadytes ducalis Sharp, 1882, the world's largest diving beetle, with notes on related species (Coleoptera: Dytiscidae), Zootaxa 4586 (3), pp. 517-535 : 525-529

publication ID

https://doi.org/ 10.11646/zootaxa.4586.3.8

publication LSID

lsid:zoobank.org:pub:3CFD2CE3-6E93-4DFB-81CB-5406DB34BF2C

DOI

https://doi.org/10.5281/zenodo.5943242

persistent identifier

https://treatment.plazi.org/id/082F1226-FFBB-FFEE-C1B0-696DFD374ED3

treatment provided by

Plazi

scientific name

Megadytes (Bifurcitus) magnus Trémouilles & Bachmann, 1980
status

 

Megadytes (Bifurcitus) magnus Trémouilles & Bachmann, 1980 View in CoL

Megadytes (Bifurcitus) magnus Trémouilles & Bachmann, 1980: 118 View in CoL (orig. descr.); Trémouilles 1989b: 161; Miller & Bergsten 2016: 108; Nilsson & Hájek 2019: 81.

Type locality. Argentina, Santa Fe .

Type material examined. Paratype: 1 male, " Argentina: S. Fe Ceres III.1943 leg. Polmer " [handwritten label], " PARATYPUS " [red printed label], "Brit. Mus. 1989-185" [printed label], " Col. A.O. Bachmann " [printed label], " Megadytes (Bifurcitus) magnus E.R. Tremouilles y A.O. Bachmann ano 1979" [red handwritten label] ( BMNH) .

Other material examined. Paraguay : 1 male, 2 females, " Paraguay / Chaco Dep. Boquéron 10 km SE Mariscal Estigarribia, 2.2.1990, leg. U. Drechsel " (CLH); 4 males, 6 females, " Paraguay / Chaco Dep. Boquéron 10 km SE Mariscal Estigarribia, 10.2.1990, leg. U. Drechsel " ( CLH, ZSM) ; 1 male, " Paraguay / Cerro Lambaré , 5.6.1992, leg. U. Drechsel / Coll. Hendrich " ( CLH) ; 1 male, " Paraguay / Dep. Central , Asunción, 31.10.1991, 5.6.1992, leg. U. Drechsel / Coll. Hendrich " ( CLH) ; Brazil: 1 female, " Brasilien , Sao Paulo, 10.12.1984, in swimming pool, Gottwald leg." ( CLH) .

Descriptive notes. A description of this species was given by Trémouilles & Bachmann (1980). Here we provide photos of the habitus ( Figs 1C, F View FIGURE 1 , 2C View FIGURE 2 ) and focus on morphological characters of the male in different views ( Figs 8 View FIGURE 8 D–F). The median lobe with both parameres of a specimen from Mariscal Estigarribia in Paraguay, is figured in ventral view ( Fig. 6A View FIGURE 6 ), the tip of the median lobe in lateral view ( Fig. 6B View FIGURE 6 ), and the tip of median lobe in ventro-apical view ( Fig. 6C View FIGURE 6 ). Note that Figs 6A and C View FIGURE 6 show the median lobe of the same individual, tilted at different angles.

Distribution. Southern part of tropical and subtropical South America. The species was described from Argentina, Paraguay and Uruguay, and later recorded from Brazil (Trémouilles 1989b) ( Fig. 11 View FIGURE 11 ).

Habitat. Unknown, probably similar to M. lherminieri . Most of the specimens in Paraguay were collected at light in a savannah region with temporary swamps and permanent farm dams. The swimming pool in Sao Paulo, were the single female has been collected, was not far away from a big reservoir or dam, overgrown with water lilies and water hyacinths (S. Gottwald pers. com.).

ZSM

Bavarian State Collection of Zoology

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Dytiscidae

Genus

Megadytes

Loc

Megadytes (Bifurcitus) magnus Trémouilles & Bachmann, 1980

Hendrich, Lars, Manuel, Michael & Balke, Michael 2019
2019
Loc

Megadytes (Bifurcitus) magnus Trémouilles & Bachmann, 1980 : 118

Nilsson, A. N. & Hajek, J. 2019: 81
Miller, K. B. & Bergsten, J. 2016: 108
Tremouilles, E. R. & Bachmann, A. O. 1980: 118
1980
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF