Copelatus darlingtoni Young, 1942

Megna, Yoandri S. & Epler, John H., 2012, A review of Copelatus from Cuba, with the description of two new species (Coleoptera: Dytiscidae: Copelatinae), Acta Entomologica Musei Nationalis Pragae 52 (2), pp. 383-410 : 395

publication ID 10.5281/zenodo.5331014

persistent identifier

treatment provided by


scientific name

Copelatus darlingtoni Young, 1942


Copelatus darlingtoni Young, 1942 View in CoL

( Figs. 5 View Figs , 13, 17 View Figs , 30 View Figs )

Copelatus darlingtoni Young, 1942: 87 View in CoL . Copelatus darlingtoni: SPANGLER (1981: 167) View in CoL , FERNÁNDEZ (2001: 30), NILSSON (2001: 65), PECK (2005: 44).

Type locality. Cuba, Pinar del Río Province, Sierra del Rangel.

Material examined. HOLOTYPE: J ( MCZ):‘ Rangel Mts. , P. de R. Aug.24, 1936, about 1500 ft. [printed] / Cuba 1936, Darlington Collector [printed] / M.C.Z. Type 25902 [printed] / Holotype Copelatus darlingtoni [handwritten, ink]’. PARATYPE: 1 J ( MCZ): same data as holotype but no red M.C.Z. label [printed] / ‘ Paratype Copelatus darlingtoni Young [handwritten, ink]’.

Diagnosis. TL 5.5–5.6 mm; EW 2.5–2.8 mm; see Table 1 for remaining body measurements. Male without impressed striae on elytra but with weakly impressed series of punctures ( Fig. 5 View Figs ); protibia without ventrobasal emargination ( Fig. 17 View Figs ). Females unlike males, with numerous fine, undulating/anastomosing striae on elytra, leaving only front of head, clypeus, and apex of elytra smooth.

Copelatus darlingtoni externally differs from C. barbouri , C. insolitus and C. montivagus by the characters given in the identification key and also by the moderately larger (1.20–1.25 mm) aedeagus ( Fig. 12 View Figs ).

Ecology. All we know about this species is that it was collected in backwaters of small streams, located in highlands ( YOUNG 1942).

Distribution. Copelatus darlingtoni has been only recorded western parts of Cuba ( YOUNG, 1942) ( Fig. 30 View Figs ).

Remarks. The junior author has dissected the genitalia from the holotype male; they are now in a microvial on the specimen’s pin. No females of this species were examined for this study. Females of C. darlingtoni , C. insolitus and C. montivagus are very similar ( YOUNG 1942) and are best separated with comparative material or by association with males.


Museum of Comparative Zoology














Copelatus darlingtoni Young, 1942

Megna, Yoandri S. & Epler, John H. 2012

Copelatus darlingtoni

PECK S. B. 2005: 44
FERNANDEZ I. 2001: 30
NILSSON A. N. 2001: 65
SPANGLER P. J. 1981: )
YOUNG F. N. 1942: 87
Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF