Platynectes (Platynectes) decemnotatus (Aubé, 1838),

Short, Andrew Edward Z., Benetti, Cesar J. & Gustafson, Grey T., 2020, New records of Platynectes (s. str.) diving beetles from South America with description of two new species (Coleoptera: Dytiscidae: Agabinae), Acta Entomologica Musei Nationalis Pragae 60 (2), pp. 437-447 : 442-443

Platynectes (Platynectes) decemnotatus (Aubé, 1838)

New material examined (98 exs). BRAZIL: AΜΑΖοΝΑ S: Amazonas State, Manaus County, Reserva Ducke (02º55′51″S 059º58′59″W), 15.iii.2004, leg. L. Montel (1 ex., INPA); Presidente Figueiredo County, AM 240, “Igarapé Sr. José” (02º01′07″S 059º49′28″W); 05.ix.2000; leg A.M.O. Pes (7 exs, INPA). PΑ Rá: Alenquer, Vale do Paraíso, ca. 55 km N. Alenquer, -1.49292, -54.51566, 150 m, 3.ii.2018, leg. Short, pool with rock sand detritus, BR 18-0203-01E (5 exs, SEMC); same data but isolated detrital pool, BR 18-0203-01F (30 exs, INPA, SEMC, including DNA voucher SLE1591); same data but in margins along river at night, BR 18-0203-01I (2 exs, SEMC). Rο RΑΙΜΑ: Amajari County, Serra do Tepequém, igarapé do silêncio, 03°46′50.2″N 061°45′22.1″W, 14.i.2018, leg. C.J. Benetti, L. Santana & A. Short (3 exs, INPA). FRENCH GUIANA: Mt. Chauve, 22.iv.1997, leg. R. Garrouste (1 ex., MNHN); Mitaraka, 25.iii.2001, leg. R. Garrouste (2 exs, MNHN, SEMC); same data but “03/01” (2 exs, MNHN, SEMC); Roura, “Montagne de Roura” (04°43′27″N 052°19′37″W), 23.xi.2007, leg. D. Lohez (7 exs, INPA). SURINAME: B RοκοΡοΝΒο DΙ SΤRΙCΤ: Brownsberg Nature Park, near Capaci House, 04 56.934′N, 55 10.825′W, 460 m, 17.iii.2017, leg. A.E.Z. Short, various collections:small stream, SR17-0317-01A (2 exs, SEMC), small stream at night, SR17-0317-01C (7 exs, SEMC, NZCS, NMW); small stream, SR17-0317-01D (4 exs, SEMC); forested pool, SR17- 0317-01E (3 exs, SEMC); same locality but 18.iii.2017; Same locality but Leo Val/Irene Val trail loop, leg. A.E.Z. Short & S. Baca, stream, SR17-0318-01A (1 ex., SEMC); same data but leg. S. Baca & B. Johnson, stream, SR17-0318-01B (1 ex., SEMC, DNA voucher SLE1598); same data but leg. S. Baca & class, stream at night, SR17-0318-01F (1 ex., SEMC); Same locality but Witti Kreek, small side stream, 21.iii.2017, leg. Short & Baca, SR17-0321-01D (2 exs, SEMC). SΙΡΑLΙWΙΝΙ DΙ SΤRΙCΤ: Central Suriname Nature Reserve: Tafelberg Summit, near Caiman Creek Camp, 19.viii.2013, leg. Short & Bloom, detrital pools in forest, SR13-0819-05B (1 ex., SEMC, DNA voucher SLE1599); Raleighvallen Nature Reserve, 4°42.48′N 56°13.15908′W, 250 m, 14.iii.2016, leg. E. Toussaint & J. Giron, pool in fallen tree, SR16-0314-02A (3 exs, SEMC, DNA Voucher SLE1597); Sipaliwini Savannah Nature Reserve, Four Brothers Mountains, 2 00.342′N, 55 58.149′W, 337 m, 31.iii.2017, leg. S. Baca, small rocky creek SR17-0331-01A (6 exs, SEMC, including DNA voucher SLE1595); Kabalebo Nature Resort, Charlie Falls, 4.38302N, 57.21161W, 174 m, 11.iii.2019, leg. Short & class, SR19-0311-01A (5 exs, SEMC, NZCS; including DNA Voucher SLE-1809).

Distribution. The species has a known range extending from the northeast coast of South America to the Amazon River. Originally described from French Guiana (‘Cayenne’), GUḖƟ*©ǤUι*úඏ (1972) extended its range to Suriname and northern Brazil (Manaus). GUඌτΑΓඌƟΝ et al. (2016) and B*úΝ*úττι et al. (2019) subsequently provided additional distribution records from Suriname and Brazil respectively. Here, we report five new localities from Suriname and French Guiana, as well as another locality in Pará State, Brazil ( Fig. 13 ).

Remarks. The five sequenced populations (four from Suriname, one from Brazil) display almost no genetic divergence in COI, both affirming the broad distribution of this species and suggesting it has a high degree of population connectivity throughout its range.

Figures

Figs 12–16. Distribution of Platynectes ‘Clade II’ sensu TƟUඌඌΑιΝτ et al. (2017) in South America. Circles represent previously published localities; stars represent localities newly reported in this paper.