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