Revision of the Neotropical water scavenger beetle genus Globulosis García, 2001 (Coleoptera: Hydrophilidae: Acidocerinae) Short, Andrew Edward Z. García, Mauricio Girón, Jennifer C. Zootaxa 2017 4232 2 271 281 6KKF7 Short, Garcia Short, Garcia [151,540,403,430] Insecta Hydrophilidae Globulosis GBIF Animalia Coleoptera 6 277 Arthropoda species flavus     Typematerial. Holotype(male):“ VENEZUELA: AmazonasState/ 5 48.141’N, 67 26.313’W,  80m/ nr. Iboruwa: “Tobogancito”/  13.i.2009; leg. A. Shortet al./ VZ09-0113-   02X”, “[barcode]/  SEMC0881820/ KUNHM-ENT” ( MIZA).  Paratypes(9): VENEZUELA: Apure:ca. 6 km S. Rio Cinaruco, Roadbetween Rio Orinoco& Rio Cinaruco,   8.i.2006, morichal and marsh along road, leg. Short, AS-06-019 (1, SEMC; voucher SLE527).  Amazonas:ca. 12 km N. Samariapo, road between Puerto Ayacuchoand Samariapo, 5°20' 29.8212"N, 67°45' 21.4806"W,  72 m,   6.i.2006, small stream in road culvert, leg. Short, AS-06-013 (2, SEMC).  Bolívar: Los Pijiguaos, 6°35.671'N, 66°49.238'W,  80 m,   12.i.2009, margin of morichal, leg. Short, Camacho, Garcia, Joly, & Miller, VZ09-0112-01A (5, MALUZ, SEMC; voucher SLE027); Rio Caripito, 6°35'12.984"N, 67°1'44.8356"W, detrital pool alongside river, 12.i.2009, leg. Short & Miller, VZ09-0112-02B (1, SEMC; voucher SLE528).   Differential diagnosis.The straight, parallel-sided parameres ( Fig. 7A) and yellow to light brown dorsal coloration ( Fig. 2D) serve to distinguish this species from  G. hemisphericus, in which the outer margins of the parameres are curved along their entire length, and is darker in coloration.   Description.Total body length 1.9–2.3 mm. Dorsal coloration light brown to yellow ( Fig. 2D). Thoracic and abdominal venter brown to dark brown ( Fig 2F). Maxillary palps uniformly yellow ( Fig. 3B). Aedeagus ( Fig. 7A) with basal piece short, less than one third the length of the parameres; outer margins of parameres parallel-sided, with apex slightly curved inward. Median lobe broad, narrowing in apical third to an acute point, apex slightly lower than the apex of the parameres; gonopore situated in apical third.   Etymology.  flavus, L., after the yellow coloration of the dorsum.   Distribution. Venezuela( Amazonas, Apure, Bolívar). The specimen from Apure, though in the llanos, was in a morichal (palm-lined stream) very close to the Orinoco River in an area that has an Amazonian influence.   Biology.This species has been collected along the margins of lotic habitats (e.g., Fig. 9A).   Remarks.The northwest “shoulder” of the GuianaShield where this species occurs has been found to harbor unique lineages of aquatic insects that have not been found elsewhere in the region, including Meruidae ( Spangler & Steiner 2005)and a lineage of Hydroscaphidae ( Short et al. 2015). The reason for this apparent biogeographic distinctness is not well understood. 1434655235 2009-01-13 A. Short Venezuela 80 5.80235 Amazonas 1 -67.43855 6 277 2 Amazonas holotype 1434655245 2002-10 SEMC, MIZA S. Rio Cinaruco Venezuela Rio Cinaruco Rio Orinoco Road 6 277 SEMC0881820 1 Apure paratype 1434655236 2006-01-08 SEMC Short & N. Samariapo Venezuela 72 5.341617 Puerto Ayacucho 1 -67.75597 6 277 1 Amazonas paratype 1434655239 2006-01-06 SEMC Short Venezuela 80 6.5945168 Los Pijiguaos 1 -66.82063 6 277 1 Bolivar paratype 1434655246 2009-01-12 MALUZ, SEMC Short & Camacho & Garcia & Joly & Miller, VZ Venezuela 6.5869403 Rio Caripito 1 -67.02912 6 277 1 Bolivar paratype