Globulosis hemisphericus García, 2001, Garcia, 2001

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: 275-277

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-C30F-FF8D-FF2B-F8D4437DE570

treatment provided by

Plazi

scientific name

Globulosis hemisphericus García, 2001
status

 

Globulosis hemisphericus García, 2001  

Figs. 2 View FIGURE 2 A –C, 3A, 4, 7B –E, 8, 9.

Globulosis hemisphericus García, 2001: 156   .

Globulosis hemisphaericus García   : Short & Hebauer, 2006: 338. (incorrect subsequent spelling) Globulosis   sp. 1: Short & Kadosoe, 2011: 89; Short 2013: 87.

Type material examined. Holotype (male): “ Venezuela, Bolívar / Mcpio [Municipio] Sifontes / Tierra Blanca— Pantano / 23/10/99 ”, “ Col.:/ Julio Gonzales / Jesus Berti / Edith Navarro ”, “ Holotipo [male symbol]/ Globulosis   / hemisphericus   / Dcrip. M. García, 1999” ( MALUZ).  

Additional material examined (50 exs.). BRAZIL: Amazonas: Manaus, PBBFF, Highway BR 174, km 72, Faz. Dimona, Igarapé (Cuieiras) Capoeira Vismia , 22.x.2001, leg. Nessiman (2 exs., DZRJ)   . Pará: Rio Xingu Camp , ca. 60 km S. Altamira, stream on left branch of trail 1, 14.x.1986, leg. P.J. Spangler & O. Flint (3 exs., USNM)   . GUYANA: Region 6: Upper Berbice , ca. 1 km W. Basecamp 1, 105 m elev., small sandy stream, 21.ix.2014, leg. Short, GY 14-0921-03A (2 exs., SEMC, voucher SLE1075)   ; Upper Berbice, ca. 1 km W. Basecamp 1, 105 m elev., small detrital side pools, 22.ix.2014, leg. Short, GY 14-0921-03G (1 ex., SEMC)   ; Upper Berbice, ca. 1 km W. Basecamp 1, 105 m elev., 22.ix.2014, leg. Short, GY 14-0921-03H (2 exs., CBDG, SEMC)   ; Upper Berbice, Basecamp 1, ca. 1 km S of camp along mammal transect, 109 m elev., dip netting along bank with roots, 25.ix.2014, leg. Short, GY 14-0925-01A (1 ex., SEMC)   . Region 8: Chenapau village , trail between airstrip and town, 427 m, large pool with lots of detritus, 14.iii.2014, leg. Short, GY 14-0314-03A (1 ex., SEMC; voucher SLE1074). Region 9: Parabara, trail to mines   , 250 m elev., leg. Short, Isaacs, Salisbury, GY 13-1102-01 A (1 ex., SEMC; voucher SLE972). Region 10: Dubulay Ranch, Warniabo River , 10.iv.1994, leg. P.J. Spangler & R. Perry (1 ex., USNM)   ; Dubulay Ranch, Aramatani River , 170 m elev., 17.iv.1995, leg. P.J. Spangler (7 exs., USNM)   ; Dubulay Ranch, Warniabo River , edge of stream, 18.iv.1995, leg. P.J. Spangler & R. Perry (1, USNM)   ; CEIBA, 40 km S. Georgetown, 13.iv.1994, leg. P.J. Spangler (1 exs., USNM). SURINAME: Brokopondo: Brownsberg Nature Park, Leo Val , 4.viii.2012, leg. Short, Maier, & McIntosh, forested waterfall and stream, SR12-0804-02A (1 ex., SEMC)   . Marowijne: East-West Highway , 23 km W. Moengo, 29 m elev., 4.iii.2012, leg. Short & Kadosoe, blackwater swamp SR12-0304-05A (2 exs., SEMC)   . Sipaliwini: Kutari River, Camp 1, 228 m elev., forest stream, 20.viii.2010, leg. Short & Kadosoe, SR 10-0820-01A (10 exs., NZCS, SEMC; voucher SLE973); Camp 3, Wehepai   , 237 m elev, leg. Short & Kadosoe, sandy forest creek, SR10-0904-01A (1 ex., SEMC); Raleighvallen Nature Reserve, Lolopasie Area   , 24 m elev., 27.vii.2012, leg. Short, McIntosh, & Kadosoe, stream margin using flotation, SR12-0727-03A (4 exs., SEMC, NZCS); Raleighvallen Nature Reserve, Voltzberg Station , 78 m elev., stream margins, 29.vi.2012, leg. Short, Maier, McIntosh, & Kadosoe SR 12-0729-02A (1 ex., SEMC, voucher SLE970); Kasikasima, Camp 4 (low)   , 200 m elev., sandy creek, 20.iii.2012, leg. Short, SR12-0320-02A (4 exs., SEMC; voucher SLE416); Central Suriname Nature Reserve, Talfelberg Summit, near Augustus Creek Camp, 600 m elev., 22.viii.2013, leg. Short & Bloom, SR 12-0822-02B (1 ex., SEMC)   ; same data but SR13-0822-01A (1 ex., SEMC; voucher SLE971).  

Differential diagnosis. The curved outer margins of the parameres ( Fig. 7 View FIGURE 7 B –E) and dark brown dorsal coloration ( Fig. 2 View FIGURE 2 A) serve to distinguish this species from G. flavus   , which has parallel-sided parameres and is pale in coloration.

Description. Total body length 2.0– 2.3 mm. Dorsal coloration brown to very dark brown ( Fig. 2 View FIGURE 2 A). Thoracic and abdominal venter dark brown ( Fig. 2 View FIGURE 2 C). Maxillary palps uniformly yellow ( Fig. 3 View FIGURE 3 A). Aedeagus ( Fig. 7 View FIGURE 7 B –E) with basal piece short, less than one-third the length of the parameres; outer margins of parameres distinctly curved inward. Median lobe broad, gradually tapering from the base to the apex into a blunted point, apex even with to slightly longer than the apex of the parameres; gonopore situated in the middle to apical third.

Variation. The dorsal coloration varies from a medium to very dark brown; we have not observed any nonteneral specimens that are as pale in color as G. flavus   . The aedeagus also exhibits some variation with regard to degree of curvature of the outer margins of the parameres (may be weakly to strongly inwardly curved along their entire length), and the relative extension of the median lobe (may be even with the apex of the parameres or extending beyond them). The opening of the gonopore also varies in position, from being situated in the middle of the median lobe to being located more apically (compare Fig. 7 View FIGURE 7 C with 7D and 7E). There was no clear correspondence in these characters with geography or the genetic groups found in Fig. 1 View FIGURE 1 .

Distribution. Venezuela (Bolívar), Guyana, Suriname, Brazil (Amazonas, Pará).

Biology. All known collecting events were from lotic habitats, primarily along the margins of small to medium sized streams and small rivers (e.g., Fig. 7 View FIGURE 7 B –D). Most of these habitats had at least some sand substrate and decaying organic matter such as leaf litter. It has been collected on the summit of one low-elevation Tepui (Tafelberg) in Suriname.

Remarks. The aedeagus of the holotype ( Fig. 4 View FIGURE 4 ) had been mounted on a slide under a coverslip and stored vertically. When we observed the slide, the genitalia had migrated out from under the coverslip to its margin and had become distorted. We soaked the slide in water and dismounted the aedeagus, but it was in very poor condition. What remains has been placed in glycerin in a microvial and pinned beneath the specimen.

The correct original spelling of the specific epithet, hemisphericus   , is an incorrect transliteration of “ hemisphaericus   ”. This type of spelling error is uncorrectable (ICZN 32.5), thus the correctly transliterated form listed in Short & Hebuaer (2006) is to be considered an incorrect subsequent spelling.

USNM

Smithsonian Institution, National Museum of Natural History

SEMC

University of Kansas - Biodiversity Institute

NZCS

University, National Zoological Collection of Suriname

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Hydrophilidae

Genus

Globulosis

Loc

Globulosis hemisphericus García, 2001

Short, Andrew Edward Z., García, Mauricio & Girón, Jennifer C. 2017
2017
Loc

Globulosis hemisphaericus García

Short 2011: 89
2011
Loc

Globulosis hemisphericus García, 2001 : 156

Garcia 2001: 156
2001