Pneuminion endroedyi, Perkins, Philip D., 2004

Perkins, Philip D., 2004, A revision of the South African endemic water beetle genus Pneuminion Perkins (Coleoptera: Hydraenidae), Zootaxa 538, pp. 1-38 : 7-8

publication ID

https://doi.org/ 10.5281/zenodo.157462

DOI

https://doi.org/10.5281/zenodo.6271121

persistent identifier

https://treatment.plazi.org/id/160487E5-FA60-FFB6-FE95-FAC6FBE7FD81

treatment provided by

Plazi

scientific name

Pneuminion endroedyi
status

sp. nov.

Pneuminion endroedyi View in CoL new species

( Figures 3 View FIGURE 3 , 13, 22 View FIGURES 21 – 22 )

Type Material. Holotype (male): South Africa: S. W. Cape Mts., Hawequas SE, 1100m, 33.41S ­ 19.06E, water coll. in rapid, 5.xi.1973, Endrödy­Younga (#203); deposited in the TMSA. Paratypes: Same data as holotype, (13 TMSA). S. W. Cape, Bainskloof, 33.30S ­ 19.10E, shore washing, 10.XI.1973, Endrödy­Younga (#227), (2 TMSA). Cape Prov., Cederberg, 1130m, 32.28S ­ 1914E, sifted marsh shore, 7.xi.1983, Endrödy­Younga (#2055), (1 TMSA). Representative duplicate specimens deposited in AMG, CMNH, FMNH, and MCZ.

Diagnosis. Most similar to P. tubum , but with elytra less shining; recognized by the more strongly punctate and granulate elytra, each setal base with a small granule at its anterior margin, the dull head and pronotum, the transversely convex body form ( Fig. 3 View FIGURE 3 ), and the male genitalia.

Description. Size (mm x 100; length/width): body (length to elytral apices) 148/67, head 30/41, pronotum 37/56, elytra 93/67. Form transversely convex.

Dorsum dark brown to piceus, legs and maxillary palpi brown; dorsal setae fine and short, testaceous. Labrum, clypeus and frons dull, micropunctulate. Frons discal punctures small, indistinct. Fovea in front of ocellus narrow, oblique sulcus, about as wide as ocellus.

Pronotum dull, obsoletely micropunctulate; punctures on reliefs small, each with short, granule­based seta, granule dividing puncture in half, punctures therefore appearing paired; all foveae shallow; oblique anterior fovea on each side shallowly connecting to midlongitudinal fovea; posterior U­shaped fovea well­developed; setae at lateral margin flat on cuticle in dry specimens. Pronotal postocular emargination deeper and less symmetrical in females than males.

Elytra with setae of series and interseries almost equally developed, resulting in narrowly separated unilinear rows of very fine setae, about 18 on each elytron; setae of intervals slightly more apparent than those of series; all setal bases with small, distinct granule at anterior margin; serial punctures moderately large, separated serially by less than puncture diameter, wider than intervals and not shining at sides; explanate margin very narrow in both sexes.

Aedeagus: main­piece length 38, total length 50; duct nearly symmetrically S­shaped, becoming gradually thicker from midlength to apex, apex knob­shaped; main­piece bladeshaped, lacking ridge/groove to support duct; paramere setae comparatively sparse, grouped at apex ( Fig. 13).

Etymology. Named in honor of the late Sebastian Endrödy­Younga.

TMSA

Transvaal Museum

AMG

Albany Museum

CMNH

The Cleveland Museum of Natural History

FMNH

Field Museum of Natural History

MCZ

Museum of Comparative Zoology

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Hydraenidae

Genus

Pneuminion

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