Hydraena hyalina Perkins, 1980

Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), Zootaxa 3074, pp. 1-198 : 51-52

Hydraena hyalina Perkins, 1980

Figs. 103 (habitus), 107 (aedeagus), 161 (female abd.), 181 (spermatheca), 204 (map)

New collection records: Bolivia: Beni, 40 km E. San Borja, Estacion Biologica Beni, Palm Camp at Rio Curiraba, ex. small pool on sand bar, edge of sunlit river, 14 ix 1987, W. E. Steiner (8 USNM); Brazil: Matto Grosso, Rio Bento Gomes (Pantanal), Flussabschnitt bei Periquito, 15° 54' S, 56° 33' W, 1 i 1993 – 30 xii 1994, E. Stuhr (30) (2 NMW); Colombia: Lago de Ayapel, 23 viii 1963, F. N. Young (5 USNM); Guyana: Pirara Ranch, Pirara River, 3° 32' N, 59° 40' W, 27 iv 1995, P. J. Spangler & S. A. Perry (colln. #23) (15 USNM); Pirara Ranch, savanna pond, pond, 3° 36' N, 59° 40' W, 23 iv 1995, P. J. Spangler & S. A. Perry (colln. #14) (13 USNM); same locality, 3° 36' N, 59° 40' W, 27 iv 1995, P. J. Spangler & S. A. Perry (colln. #24) (22 USNM); Pirara Ranch, trib. to Pirara River, 3° 36' N, 57° 43' W, 23 iv 1995, P. J. Spangler & S. A. Perry (colln. #16) (14 USNM); Venezuela : Amazonas, Stream along Rio Sipapo, S. Communidad Cano Gato, various streamside habitats, elev. 87 m, 4° 55.849' N, 67° 44.645' W, 16 i 2009, Short, Garcia, Camacho, Miller, Joly (VZ09-0116- 02X) (1 SEMC); Anzoategui, River along highway N. of El Tigre, vegetated backwater margins, elev. 236 m, 9° 5.808' N, 64° 19.445' W, 3 ii 2010, Short (VZ10-0203-03B) (2 SEMC); Apure, between La Ye and Bruzual, roadside lagoon, elev. 90 m, 7° 38.66' N, 69° 18.004' W, 18 i 2009, Short, Garcia, Camacho (VZ09-0118- 03X) (89 SEMC); Road between Rio Orinoco and Rio Cinaruco, Morichal, elev. 68 m, 60° 30.9' N, 67° 32.604' W, 8 i 2006, Short, Torres (AS-06-019) (4 SEMC); Road between Rio Orinoco and Rio Cinaruco, Morichal margin, elev. 68 m, 6° 30.9' N, 67° 32.604' W, 17 i 2009, Short, Miller, Camacho (VZ09-0117- 01X) (13 SEMC); Road between San Fernando and Rio Capanaparo, 0.5 km N. Rio Claro, roadside ditch/swale, elev. 50 m, 7° 10.162' N, 67° 38.69' W, 4 i 2006, Short, Torres (AS-06- 009) (3 SEMC); Barinas, 10 km NE Barinas, 23 ii 1969, P. & P.J. Spangler (1 USNM); Bolivar, 25 km W. Tumeremo, along road, farm pond/marsh, elev. 163 m, 7° 22.239' N, 61° 44.233' W, 13 vii 2010, Short, Tellez, Arias (VZ10-0713-01A) (3 SEMC); 28 km W. Tumeremo, along road, marsh, elev. 166 m, 7° 22.526' N, 61° 45.568' W, 13 vii 2010, Short, Tellez (VZ10-0713-02A) (8 SEMC); Between Caicara & Los Pijiguaos, various lentic habitats: pond and lagoon, elev. 62 m, 7° 20.992' N, 66° 17.904' W, 11 i 2009, Short, Miller, Garcia (VZ09-0111- 02X) (103 SEMC); Campamento Rio Aro, by Rio Aro, seep scrubbing, elev. 90 m, 7° 37.443' N, 64° 8.324' W, 11 vii 2010, Short, Tellez, Arias (VZ10-0711-01B) (1 SEMC); Gran Sabana, N. Santa Elena, Rio Guara at Rt. 10, marshy area in river floodplain, elev. 876 m, 4° 37.362' N, 61° 5.679' W, 17 vii 2010, Short, Tellez, Arias (VZ10-0717-02A) (1 SEMC); Los Pijiguaos: outcrop/morichal, algae on rocky margin of morichal, elev. 80 m, 6° 35.617' N, 66° 49.238' W, 12 i 2009, Short, Garcia, Camacho, Miller, Joly (VZ09-0112-01B) (5 SEMC); c. 65 km S. Las Mercedes, Large, vegetated lagoon, elev. 145 m, 8° 31.705' N, 66° 22.602' W, 9 i 2009, Short, Garcia, Camacho, Miller (VZ09-0109- 01X) (62 SEMC); Calabozo (44 km S), Hato Masaguaral, 5 iii 1986, P. J. Spangler (colln. #25) (22 USNM); same locality, 5 iii 1986, P. J. Spangler (colln. #24) (8 USNM); same locality, 6 iii 1986, P. J. Spangler (colln. #30) (5 USNM); Calabozo (44 km S), Hato Masaguaral, gate lagoon, 6 iii 1986, P. J. Spangler (colln. #28) (21 USNM); N. of Palenque, stream margins, elev. 152 m, 9° 6.794' N, 66° 59.595' W, 8 i 2009, Short, Garcia, Camacho, Miller, Joly (VZ09-0108- 03X) (2 SEMC); San Nicolasito Field Station, morichal in front of station, morichal margin and backwaters, elev. 50 m, 8° 8.296' N, 66° 24.459' W, 10 i 2009, Short, Miller (VZ09-0110- 02X) (15 SEMC); Monagas, Morichal at road crossing, margins of morichal, elev. 22 m, 9° 16.398' N, 62° 56.246' W, 2 ii 2010, Short, Garcia, Joly (VZ10-0202-02A) (8 SEMC); river crossing, S. of Maturin, vegetated margin, elev. 45 m, 9° 36.591' N, 63° 8.295' W, 2 ii 2010, Short & Garcia (VZ10-0202-01B) (6 SEMC); small pond along road between Tucupita & Temblador, margins of vegetated pond, elev. 19 m, 8° 46.439' N, 62° 14.306' W, 3 ii 2010, Short, Garcia, Joly (VZ10-0203-02A) (53 SEMC); Small pond, between Morichal Largo & Temblador, margins of vegetated pond, 9° 5.798' N, 62° 43.618' W, 2 ii 2010, Short, Garcia, Joly (VZ10-0202-03A) (27 SEMC).

Distribution. Currently known from Bolivia, Brazil, Colombia, Guyana, and Venezuela ( Fig. 204 ).

Comparative Notes. H. hyalina ( Fig. 103 ) is similar in dorsal habitus to members of the Umbolenta Group ( Figs. 108–110 ). However, the male genitalia of H. hyalina ( Fig. 107) are very different in basic form from those of the Umbolenta Group ( Figs. 111–113). Specimens of the widespread H. hyalina can be differentiated from all, or almost all, South American Hydraena by the maxillary palpi color, which have the last palpomere subapically darker in color than the remainder of the palpomere (e.g., Fig 103 ). Only H. loripes ( Fig. 110 ) has somewhat similar coloration, but that species differs in several respects, including coarser dorsal punctation, different plaque shape, highly modified male legs, and very different male genitalia.

Illustration Notes. A more detailed illustration of the holotype aedeagus is presented ( Fig. 107). The illustration of the spermatheca ( Fig. 181) is that of a specimen from Venezuela .

Figures

FIGURE 103. Hydraena hyalina, holotype, dorsal and lateral habitus, and venter.

FIGURE 108. Hydraena umbolenta, holotype, dorsal and lateral habitus, and venter.

FIGURE 109. Hydraena kellymilleri, holotype, dorsal and lateral habitus, and venter.

FIGURE 110. Hydraena loripes, holotype, dorsal and lateral habitus, and venter.

FIGURES 204 – 205. 204. Geographical distribution of Hydraena hyalina. 205. Geographical distributions of Hydraena particeps and Hydraena quechua.