Hydraena perkinsi Spangler, 1980

DELER-HERNÁNDEZ, ALBERT & DELGADO, JUAN A., 2012, The Hydraenidae of Cuba (Insecta: Coleoptera) I: Contribution to the fauna of eastern Cuba, Zootaxa 3478 (1), pp. 213-238 : 220-222

Hydraena perkinsi Spangler, 1980

( Figs. 5 , 13 , 25, 26 , 35–37, 54, 55 , 58 , 60 , 63 )

Hydraena perkinsi Spangler, 1980: 331 .— Perkins, 1980: 172.— Spangler, 1981: 162.— Jäch et al. 2000: 80.— Peck, 2005: 55.— Deler-Hernández & Cala-Riquelme, 2010: 73.

Diagnosis: Habitus as in Fig. 35. Male terminalia: Ventrite VII ( Fig. 13 ) oval, spiculum gastrale long, relatively wide and straight, firmly attached to ventrite. Terminal tergite ( Fig. 5 ) trapezoidal. Female terminalia: Gonocoxite ( Fig. 25 ) transverse, with outer plate symmetrical; inner plate symmetrical, with a elongate impression, divided in two portions. Last tergite transverse, with a distal row of stout, small setae ( Fig. 26 ). Male genitalia as in Figs. 36–37 . Spermatheca: C-shaped in lateral view; spermathecal duct curved ( Figs. 54–55 ), long and narrow for entire length. For a detailed external description see Perkins (1980: 172).

Material examined: Las Tunas: 2 male, 4 females (dry-mounted) ( CUMS): “ Cuba: Las Tunas / Las Cuarenta, (arroyo [stream]) / 20º00’9,72’’N 76º57’48,6’’W, 100 m / 27-XI-2004, coll.: Y. S. Megna ”. 3 females (in alcohol) ( BSC-E): “CUBA: Las Tunas / Comunales , Amancio / 20º49’17,7’’N 77º34’40,8’’W, 50 m / 16-I-2009, Laguna temporal [temporary pool] / coll.: A. Deler-Hernández ” . Granma: 3 males (in alcohol) ( BSC-E), 3 females (drymounted) ( CUMS): “CUBA: Granma / Cauto Cristo, Laguna permanente [permanent pool] / 20º33’33,1’’N 76º28’44’’W, 44 m / 04-I-2005, coll.: L. Chávez ” . Holguín: 1 male, 4 females (in alcohol) ( BSC-E): “CUBA: Holguín / Jardín Botánico , arroyo [stream] / 20º51’46,8’’N 76º13’22,8’’W, 84 m / 01-XII-2008 / coll.: A Deler- Hernández” . Santiago de Cuba: 1 male (in alcohol) ( BSC-E): “CUBA: Santiago de Cuba / Palma Soriano, arroyo [stream] / 20º06’05’’N 75º58’44’’W, 130 m / 01-XI-2005 / coll.: K. Blanco ”. 1 male (in alcohol) ( BSC-E): “CUBA: Santiago de Cuba / Humedal San Miguel de Parada / Río Cobre , Punta de Sal / 20º11’2,50’’N 75º46’17,7’’W, 3 m / 23-VI-2008, coll.: A. Deler-Hernándz [sic]”. 1 male (in alcohol) ( BSC-E): Same data, 09- VII-2008. 3 males (in alcohol) ( BSC-E): Same data, 27-X-2008. 3 females (in alcohol) ( BSC-E): Same data, 06-8- 2008. 6 males, 5 females (in alcohol) ( BSC-E): Same locality, 29-IX-2008. 2 females (dry-mounted) ( CUMS): “CUBA: Santiago de Cuba / Humedal San Miguel de Parada / Río Cobre , Punta de Sal / 20º11’2,50’’N 75º46’17,7’’W, 3 m / 07-VII-2008, coll.: A. Deler-Hernándz [sic]”. 10 females (dry-mounted) ( CUMS): “CUBA: Santiago de Cuba, Río Cobre / Humedal San Miguel de Parada / 20º11’2,50’’N 75º46’17,7’’W, 1 m / 10-VIII-2009 / coll.: A. Deler-Hernández ”. 8 females (dry-mounted) ( CUMS): same locality, 17-IX-2009. 6 females (in alcohol) ( BSC-E): “CUBA: Santiago de Cuba / Río San Juan , San Juan / 19º58’27,4’’N 75º53’22,2’’W, 24 m / 16-X-2008 coll.: A. Deler-Hernández ”. 1 female (in alcohol) ( BSC-E): “CUBA: Santiago de Cuba / Río Sevilla , La Redonda / 20º00’54,3’’N 75º45’45,6’’W, 15 m / 15-IX-2009 / coll.: A. Deler-Hernándz [sic]”. 10 females (dry-mounted) ( CUMS): Same locality, 19-XII-2009. 1 male, 2 females (dry-mounted) ( CUMS): Same locality, 9-I-2010. 1 female (dry-mounted) ( CUMS): Same locality, 18-I-2009. 2 females (dry-mounted) ( CUMS): “CUBA: Santiago de Cuba / El Vivero, Dos Caminos, San Luis / 20º11’2,50’’N 75º46’17,7’’W, 150 m / 14-V-2008, coll.: A. Deler- Hernández / laguna temporal [temporary pool]” . Guantánamo: 3 males, 8 females (in alcohol) ( BSC-E): “CUBA: Guantánamo, Río Yacabo / Abajo, Yacabo Abajo , Imías / 20º06’05’’N 74º69’0’’W, 6 m, 24-X- / 2008, coll.: A. Deler-Hernández ”. 14 males, 13 females (in alcohol) ( BSC-E): “CUBA: Guantánamo / Nibujón , Baracoa / 20º06’05’’N 74º69’0’’W, 6 m / 03-II-2010 / coll.: A. Deler-Hernández & R. Correa, laguna temporal [temporary pool]” .

Distribution: Currently only known from Cuba ( Perkins 1980). Hydraena perkinsi is the most widespread and common species of Hydraena in eastern Cuba ( Fig. 58 ).

Habitat: This species occurs in a wide range of habitats, from well preserved streams ( Fig. 63 ) to temporary pools with moderately polluted waters ( Fig. 60 ). This successful species favours margins of lowland habitats with clear water, muddy bottom and high exposure to the sun. In one locality (San Miguel de Parada) the water temperature reached 36ºC at midday.

Figures

FIGURES 2–7. Terminal male tergite. 2, Gymnochthebius fossatus. 3, Ochthebius attritus. 4, Hydraena decui. 5, H. perkinsi. 6, H. guadelupensis. 7, H. franklyni. Scale = 0.1 mm.

FIGURES 8–13. Male ventrite VII and speculum gastrale. 8, Gymnochthebius fossatus. 9, Ochthebius attritus. 10, Hydraena decui. 11, H. franklyni. 12, H. guadelupensis. 13, H. perkinsi. Scale = 0.1 mm.

FIGURES 21–26. Gonocoxite and last female tergite. 21, gonocoxite of Hydraena franklyni. 22, last female tergite of H. franklyni. 23, gonocoxite of H. guadelupensis. 24, last female tergite of H. guadelupensis. 25, gonocoxite of H. perkinsi. 26, last female tergite of H. perkinsi. Scale = 0.1 mm.

FIGURES 45–55. Spermathecae. 45, G.fossatus(lateral view). 46, G. fossatus (ventral view). 47, O. attritus (ventral view). 48, H. decui (lateral view). 49, H. decui (ventral view). 50, H. franklyni (lateral view). 51, H. franklyni (ventral view). 52, H. guadelupensis (lateral view). 53, H. guadelupensis (ventral view). 54, H. perkinsi (lateral view). 55, H. perkinsi (ventral view). Scale = 0.1 mm.

FIGURES 56–58. Distribution maps for all species of Hydraenidae in eastern Cuba. 56, squares = G. fossatus, circles = O. attritus. 57, squares = H. franklyni, circles = H. guadelupensis. 58, squares = H. decui, circles = H. perkinsi.

FIGURES 59–61. Habitats of Hydraenidae species. 59, habitat and type locality of H. franklyni. Gran Piedra, Santiago de Cuba (Photo by A. Deler-Hernández, 04-III-2012). 60, habitat of G.fossatus and H. perkinsi. Temporary pool, Dos Caminos, San Luis, Santiago de Cuba (Photo by A. Deler-Hernández, 20-VII-2011). 61, habitat of H. decui. Stream, Gran Piedra, Santiago de Cuba (Photo by L. O. Mélian, 09-XI-2011).

FIGURES 62–64. Habitat of Hydraenidae species. 62, habitat of H. guadelupensis. Stream, protected area “Loma del Gato”, Santiago de Cuba (Photo by J. Lastre, 27-I-2011). 63, habitat of G. fossatus and H. perkinsi. Sevilla River, La Redonda, Santiago de Cuba (Photo by A. Deler-Hernández, 20-VII-2011). 64, habitat of O. attritus. Temporary pool, Humedal San Miguel de Parada, Santiago de Cuba (Photo by F. Cala-Riquelme, 15-VI-2009).

FIGURES 36–39. Male genitalia. 36, Hydraena perkinsi (lateral view). 37, H. perkinsi (ventral view). 38, H. decui (lateral view). 39, H. decui (ventral view). Scale = 0.1 mm.