Three new genera of acidocerine water scavenger beetles from tropical South America (Coleoptera, Hydrophilidae, Acidocerinae) Giron, Jennifer C. Short, Andrew Edward Z. ZooKeys 2018 2018-06-19 768 113 158 http://zoobank.org/59E30D06-ADB4-4C39-8AE4-4ED03ED8F58F Girón & Short, 2018 Girón & Short 2018 Insecta Hydrophilidae Nanosaphes CoL Animalia Nanosaphes punctatus Coleoptera 30 143 Arthropoda species punctatus sp. n.   Typematerial examined.  Holotype (male): " SURINAME: Sipaliwini District/ 04°56.871'N, 55°10.911'W, 462 m/ Brownsberg Nature Park, forested/ stream with lots of detritus; leg./ Short, Maier, McIntosh; 4.viii.2012/ SR12-0804-01A" (NZCS). Paratypes: (40): GUYANA: Region XII: " 5°0.730'N, 59°38.965'W, 585 m/ Upper Potaro Camp I (c. 7 km/ NW Chenapau), Ridge Trail/ leg. Short, Baca, Salisbury/ 11.iii.2014/ GY14-0311-02A" (32, SEMC, CBDG); " 5°10.514'N, 59°28.970'W, 440 m/ Kaieteur National Park, trail by guest-/ house; forest pools; leg. Short/ Salisbury, La Cruz; 21.iii.2014/ GY14-0321-01B" (1, SEMC). SURINAME: Sipaliwini District: same data as holotype (6, SEMC, including DNA vouchers SLE 507 and 508); " 3°55'36.0012", -56°11'17.9952", 600 m/ Central Suriname Nature Reserve: Tafelberg Summit, nr. Augustus Creek Camp; 17.viii.2013; leg. Short & Bloom; SR13-0817-01A" (1, SEMC, DNA voucher SLE 1069).  Differential diagnosis.   Nanosaphes punctatusis readily recognized among its congeners by its coarse elytral ground punctation (as opposed to shallowly punctate) (see Fig. 15E, F). In addition, the dorsal outline in lateral view is more convex in comparison.  Description. Body length 1.2-1.4 mm, width 0.7-0.9 mm. Body elongate oval, moderately convex, uniformly brown throughout (see Fig. 15E-H). Dorsal surface coarsely punctate. Posterior elevation of mesoventrite flat. Pubescence of ventral surface scanty. Aedeagus (Fig. 18D) with basal piece 0.4-times the length of parameres; parameres nearly as long as median lobe, with round apex; gonopore situated near apex of median lobe.  Etymology. Named in reference to the relative coarseness of the dorsal punctation of the species, with the Latin word punctameaning puncture.  Distribution. Guyana, Suriname. Elevation range 440-585 m. See Fig. 19.  Biology. This species was collected in small forested streams and pools with abundant detritus (Fig. 20B).   Figure 18.Aedeagus of  Nanosaphesspp.: A  Nanosaphes tricolor B  Nanosaphes hesperus C  Nanosaphes castaneus D  Nanosaphes punctatus. Scale bars: 0.1 mm.   Figure 19.Distribution of  Nanosaphesspecies.   Figure 20.Habitat of  Nanosaphesspp. AHabitat for  N. hesperus, Guyana: near Parabara; collecting event GY13-1103-02A BHabitat of  N. punctatus, Guyana, upper Potaro near Chenapau, collecting event GY14-0311-02A CType locality and habitat for  N. hesperus, Suriname, along Kutari River, collecting event SR10-0820-01A DHabitat for  N. hesperusand  N. tricolor, Suriname, near Kasikasima, collecting event SR12-0320-02A EHabitat for  N. tricolor, Suriname, near Voltzberg, collecting event SR12-0729-02C FHabitat for  N. tricolor, Suriname, Sipaliwini Savanna, collecting event SR17-0331-01B.