Tropisternus collaris ( Fabricius, 1775 )

Gonzalez-Rodriguez, Liza M., García-Hernández, Andrea L. & Clarkson, Bruno, 2017, First records of water scavenger beetle species (Coleoptera, Hydrophilidae) from Quindío Department, Colombia, Check List 13 (5), pp. 605-620 : 613-615

Tropisternus collaris ( Fabricius, 1775) ( Figs 16, 40)

Hydrophilus collaris Fabricius 1775: 229 .

Dytiscus collaris (Fabricius) — Goeze 1777: 615.

Tropisternus collaris (Fabricius) — Castelnau 1840: 54.

Hydrophilus lineatus Dejean 1821: 50 , nomum nudum. Syn.: Orchymont 1919: 159.

Tropisternus lineatus (Dejean) — Solier 1834: 310, nomum nudum.

Diagnosis. Body 6–10 mm long. Dorsal coloration palebrown to yellow, pronotum dark brown to black on medial portion with metallic green suboval spot. Punctation on head, pronotum and elytra fine and strongly impressed. Each elytron with four longitudinal metallic green lines. Prosternum elevated, medially opened, which receive anterior margin of mesoventrite process. Last abdominal ventrite with wide subtriangular protuberance, which overlaps 3/5 of ventrite length. Parameres sinuate on inner margin, projected on outer margin, wide at base, longer than median lobe; median lobe slender at apex, abruptly widened on basal half; phallobase somewhat shorter than parameres.

Geographic distribution. Argentina, Bolivia, Brazil, Colombia, Cuba, Haiti, Lesser Antilles, Mexico, Paraguay, Peru, Puerto Rico, USA, and Venezuela. First record from Quindío Department.

Material examined. Colombia, Quindío Department, La Tebaida Municipality, Pizamal neighborhood, 04°24ʹ 47.6ʺ N, 075°50ʹ29.2ʺ W, 1064 m a.m.s.l., 2015-II-04, L.M. González coll., CIUQ 10694–10713 (665 males, 328 females). Salento Municipality, San Juan de Carolina neighborhood, 04°35ʹ46.4ʺ N, 075°43ʹ37.5ʺ W, 2007- IX-25, 1510 m a.m.s.l., A.L García coll., CIUQ 13282 (3 males, 1 female). Córdoba Municipality, Corosal neighborhood, 04°24ʹ19.5ʺ N, 075°43ʹ37.0ʺ W, 1300 m a.m.s.l., 2007-X-05, A.L García coll., CIUQ 13283 (3 males, 2 females).

Remarks. Specimens were collected in ponds, in marshes, and along riverbanks, on muddy/sandy, muddy/leaf litter, muddy/stony, and muddy substrates, as well as on submerged vegetation.

Tropisternus sharpi Orchymont, 1922 ( Figs 17, 41) Tropisternus nigrinus Sharp 1883: 107 . Tropisternus (Cyphostethus) sharpi Orchymont 1922: 21 (replacement

name for nigrinus sensu Sharp ). Tropisternus (Pristoternus) sharpi

Orchymont— Bachmann 1981: 8.

Diagnosis. Body 11–13 mm long. Head, pronotum and elytra dark brown. Meso-metaventral process forming a

long keel posteriorly projected as a long spine that reaches medially of abdominal ventrite II length. Last ventrite with a short spine-like posteriad, little evident, with a tuft of golden setae at apex. Parameres longer than phallobase, laterally convex, median lobe acute, triangular, phallobase as long as parameres, narrowing at distal half.

Geographic distribution. Argentina, Brazil, Colombia, Paraguay, Uruguay, and Venezuela. First record from Quindío Department.

Material examined. Colombia, Quindío Department, La Tebaida Municipality, Pizamal neighborhood, 04°41ʹ 30.1ʺ N, 075°83ʹ98.1ʺ W, 1057 m a.m.s.l., 201-X-10, L.M. González coll., CIUQ 10691–10693 (2 males, 1 female).

Remarks. Specimens were collected in marshes on mud and submerged vegetation.