Globulosis flavus Short, García,

Short, Andrew Edward Z., García, Mauricio & Girón, Jennifer C., 2017, Revision of the Neotropical water scavenger beetle genus Globulosis García, 2001 (Coleoptera: Hydrophilidae: Acidocerinae), Zootaxa 4232 (2), pp. 271-281: 277-278

publication ID

https://doi.org/10.11646/zootaxa.4232.2.10

publication LSID

lsid:zoobank.org:pub:429E64A0-C924-4FF5-B12C-39246DA38492

persistent identifier

http://treatment.plazi.org/id/038C074D-C30D-FF8C-FF2B-FE6E450BE340

treatment provided by

Plazi

scientific name

Globulosis flavus Short, García
status

 

Globulosis flavus Short, García  , & Girón sp. n.

Figs. 2View FIGURE 2 D –F, 3B, 5, 6, 7A, 8, 9.

Type material. Holotype (male): “ VENEZUELA: Amazonas State/ 5 48.141’N, 67 26.313’W, 80m / nr. Iboruwa: “Tobogancito”/ 13.i.2009; leg. A. Short et al./ VZ09-0113GoogleMaps  - 02X ”, “[barcode]/ SEMC 0881820View Materials / KUNHM-ENT” ( MIZA). Paratypes (9): VENEZUELA: Apure: ca. 6 km S. Rio Cinaruco, Road between 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 Ayacucho and Samariapo, 5°20' 29.8212"N, 67°45' 21.4806"W, 72 mGoogleMaps  , 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 mGoogleMaps  , 12.i.2009, margin of morichal, leg. Short, Camacho, Garcia, Joly, & Miller, VZ 09-0112-01A (5, MALUZ, SEMC; voucher SLE027); Rio Caripito , 6°35'12.984"N, 67°1'44.8356"W, detrital pool alongside riverGoogleMaps  , 12.i.2009, leg. Short & Miller, VZ09-0112-02B (1, SEMC; voucher SLE528).

Differential diagnosis. The straight, parallel-sided parameres ( Fig. 7View FIGURE 7 A) and yellow to light brown dorsal coloration ( Fig. 2View FIGURE 2 D) 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. 2View FIGURE 2 D). Thoracic and abdominal venter brown to dark brown ( Fig 2View FIGURE 2 F). Maxillary palps uniformly yellow ( Fig. 3View FIGURE 3 B). Aedeagus ( Fig. 7View FIGURE 7 A) 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. 9View FIGURE 9 A).

Remarks. The northwest “shoulder” of the Guiana Shield 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.

SEMC

University of Kansas - Biodiversity Institute

MIZA

Museo del Instituto de Zoologia Agricola Francisco Fernandez Yepez