Golofa clavigera clavigera (Linnaeus, 1771) (Coleoptera: Scarabaeidae: Dynastinae)

Golofa clavigera clavigera (Linnaeus, 1771)
Scarabaeus claviger Linnaeus, 1771 (original combination).
Scarabaeus hastatus Fabricius, 1781 (synonym).
Scarabaeus subgrundator Voet, 1806 (synonym).
Golofa puncticollis Thomson, 1860 (synonym).

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Description: Golofa clavigera clavigera (Linnaeus) is a type species of genus Golofa, occurring in wide ranges including French Guiana, Venezuela, Brazil, Colombia, Ecuador, Peru, and Bolivia. G. clavigera clavigera is very common among the Golofa species. Its biology has not yet been studied. Identification information can be found in Cespesdes and Ratcliffe (2010), Endrödi (1985), and Hwang (2011).

References:

Cespesdes, A. A. and B. C. Ratcliffe. 2010. Golofa clavigera (Linnaeus, 1771) in Bolivia: a new country record (Coleoptera: Scarabaeidae, Dynastinae). Ecologia en Bolivia 45(1): 73–76.

Endrödi, S. 1977. Monographie der Dynastinae (Coleoptera) 6. Tribus: Dynastini. II. Acta Zoologica Academiae Scientiarum Hungaricae 23: 37-86.

Hwang, S.-M.-R. 2011. The Dynastini of the World (Coleoptera: Scarabaeidae: Dynastinae). Nature and Ecology (Academic Series), Volume 4. Seoul, South Korea. 368 pp.

Kim, J. 2016. Generic Guide to New World Scarab Beetles-Scarabaeidae-Dynastinae-Dynastini-Golofa. (URL: http://museum.unl.edu/research/entomology/Guide/Scarabaeoidea/Scarabaeidae/Dynastinae/Dynastinae-Tribes/Dynastini/Golofa/Golofa.html). In: B.C. Ratcliffe and M.L. Jameson (eds.), Generic Guide to New World Scarab Beetles (URL: http://www-museum.unl.edu/research/entomology/Guide/Guide-introduction/Guideintro.html).

Euetheola rugiceps (LeConte, 1856) (Coleoptera: Scarabaeidae: Dynastinae)

Euetheola rugiceps (LeConte, 1856)
Ligyrus rugiceps LeConte, 1856 (original combination).
Euetheola humilis Burmeister, 1847 (synonym).

Euetheola rugiceps.jpg

Comment: E. rugiceps (LeConte) is known to occur southeastern US and keep spreading upward to midwest states. I personally collected couple of specimens in southern Nebraska, 2014. Very common in down south. They are mostly active in between May-June to August. I have experience of collecting more than a hundred specimen in a single night with a small battery-operated blacklight within an hour. This species do not show a sexual dimorphism, therefore, genitalia must be extracted to determine the sex. In my personal collections from Shreveport, LA and Alexandria, LA, there were whole lot more females than males collected.

*Image of aedeagus will be updated in near future.

Golofa argentina Arrow, 1911 (Coleoptera: Scarabaeidae: Dynastinae)

Golofa argentina Arrow, 1911
Golofa argentina Arrow, 1911 (original combination).

Golofa argentina_1600.jpg

 

Description: Golofa argentina Arrow is an endemic species occurring in Argentina. Life history or biology is not yet studied.

References:
Kim, J. 2016. Generic Guide to New World Scarab Beetles-Scarabaeidae-Dynastinae-Dynastini-Golofa. (URL: http://museum.unl.edu/research/entomology/Guide/Scarabaeoidea/Scarabaeidae/Dynastinae/Dynastinae-Tribes/Dynastini/Golofa/Golofa.html). In: B.C. Ratcliffe and M.L. Jameson (eds.), Generic Guide to New World Scarab Beetles (URL: http://www-museum.unl.edu/research/entomology/Guide/Guide-introduction/Guideintro.html).

Chrysina gloriosa (LeConte, 1854) (Coleoptera: Scarabaeidae: Rutelinae)

Chrysina gloriosa (LeConte, 1854)
Plusiotis gloriosa LeConte, 1854 (original combination).

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Description: one of four species of Chrysina occurs in the U.S. This species is known to occur in the US (Arizona to western Texas) and the Mexico (Chihuahua and Sonora) and are very common species. Alive specimens can be sexed based on its coloration, male being darker green whereas female being brighter green (slight difference presented). Adults feed on foliage of Juniperus sp. Larvae can feed on dead, rotten Quercus sp., and are easily reared to adult stage. Known to fly to the lights in Arizona.

Below is reared specimens of C. gloriosa (LeConte):
dscn4994
L2-L3 larvae

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pupae

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pupa

_dsc4886
freshly emerged specimen (dorsal)

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freshly emerged specimen (ventral)

References:
http://www.museum.unl.edu/research/entomology/Guide/Scarabaeoidea/Scarabaeidae/Rutelinae/Rutelinae-Tribes/Rutelini/Chrysina/Chrysina-species/C-gloriosa/Cgloriosa.html

Dynastes tityus (Linnaeus, 1763) (Coleoptera: Scarabaeidae: Dynastinae)

Dynastes tityus (Linnaeus, 1763)
Scarabaeus tityus Linnaeus, 1763 (original combination).

Dynastes tityus male.jpg

(Pictured specimen is reared male. Image of females will be updated in the near future.)

Description: One of two Dynastes species occurring in North America, the other one is Dynastes grantii Horn, 1870. Two species do not overlap the distribution. D. tityus occurs in Texas-Florida-New York, while D. grantii occurs in Arizona-Utah and northern Mexico. Five female specimens collected with light trap of metal halide + black light and mercury vapor + blacklight combinations from July 1st to July 6th, 2016 in central Louisiana.

Following image is one of those five females in collection site:

dsc01503(2 July 2016. @Central Louisiana)

References:
Moore, M. R. 2006. http://www.museum.unl.edu/research/entomology/Guide/Scarabaeoidea/Scarabaeidae/Dynastinae/Dynastinae-Tribes/Dynastini/Dynastes/D-tityus/Dtityus.html

Phileurus valgus (Olivier, 1789) (Coleoptera: Scarabaeidae: Dynastinae)

Phileurus valgus (Olivier, 1789)
Scarabaeus valgus Olivier, 1789 (original combination).
Scarabaeus castaneus Haldeman, 1843 (synonym).
Phileurus capra Bates, 1888 (synonym).
Phileurus valgus septentrionis Kolbe, 1910 (synonym).
Phileurus meridionalis Kolbe, 1910 (synonym).
Phileurus valgus antillarum Prell, 1912 (subspecies)
Phileurus texensis Casey, 1915 (synonym).
Phileurus carolinae Casey, 1915 (synonym).
Phileurus sulcifer Casey, 1915 (synonym).
Phileurus floridanus Casey, 1915 (synonym).
Phileurus clathratus Casey, 1915 (synonym).

 

Phileurus valgus (Olivier)_wp2.jpg

Collection Sites: Louisiana (Caddo Parish-Shreveport; Rapides Parish-Elmer)

Descriptions: Adults attracted to light. Size is around 18.0-28.8mm (Ratcliffe et al. 2013).

References:
Ratcliffe, B. C. and M. J. Paulsen. 2008.
The scarabaeoid beetles of Nebraska (Coleoptera: Scarabaeoidea). Bulletin of the University of Nebraska State Museum 22: 1–570.

Ratcliffe, B. C., R. D. Cave, and E. B. Cano. 2013. The dynastine scarab beetles of Mexico, Guatemala, and Belize (Coleoptera: Scarabaeidae: Dynastinae). Bulletin of the University of Nebraska State Museum 27: 1-666.

Hybosorus illigeri Reiche, 1853 (Coleoptera: Hybosoridae)

Hybosorus illigeri Reiche, 1853
Scarabaeus arator Illiger, 1803 (junior primary homonym).
Hybosorus oblongus Dahlbom (nomen oblitum).
Hybosorus roei Westwood, 1845 (nomen oblitum).
Hybosorus thoracicus Westwood, 1845 (nomen oblitum).
Hybosorus carolinus LeConte, 1847 (nomen oblitum).
Hybosorus illigeri Reiche, 1853.
Hybosorus nitidus Lansberge, 1882 (synonym).
Hybosorus illigeri variety nossivianus Fairmaire, 1895 (synonym).
Hybosorus illigeri Reiche ssp. palearcticus Endrodi, 1957 (synonym).

Hybosorus illigeri Reiche_580

Collection Sites: Louisiana (Caddo Parish, Shreveport; Rapides Parish, Alexandria; Rapides Parish, Boyce).

Description: Adults are attracted to light. Size is around 7-9mm (Ocampo, 2002).

References:

Ocampo, F.C. 2002. Hybosorids of the United States and expanding distribution of the introduced species Hybosorus illigeri (Coleoptera: Scarabaeoidea: Hybosoridae). Annals of the Entomological Society of America, 95: 316-322.

Pseudataenius socialis (Horn, 1871) (Coleoptera: Scarabaeidae: Aphodiinae)

Pseudataenius socialis (Horn, 1871)
Ataenius socialis Horn, 1871 (original combination).

Pseudataenius socialis (Horn 1871)_580

Collection Sites: Nebraska (Lancaster Co., Lincoln)

Description: Specimen found near light.

References:
Skelly, P. (2008).
Generic Guide to New World Scarab Beetles-Scarabaeidae
-Dynastinae-Dynastini-Dynastes. (URL: http://museum.unl.edu/research/ento
mology/Guide/Scarabaeoidea/Scarabaeidae/Aphodiinae/AphodiinaeTribes/Eu
pariini/Pseudataenius/Pseudataenius.html). In: BC. Ratcliffe and M.L. James
on (eds.), Generic Guide to New World Scarab Beetles (URL: http://www-mu
seum.unl.edu/research/entomology/Guide/Guideintroduction/Guideintro.html).

Digitonthophagus gazella (Fabricius, 1787) (Coleoptera: Scarabaeidae: Scarabaeinae)

Digitonthophagus gazella (Fabricius, 1787)
Scarabaeus gazella Fabricius, 1787 (original combination).
Onthophagus gazella Fabricius (synonym).
Scarabaeus catta Fabricius, 1787 (synonym).
Scarabaeus dorcas Olivier, 1789 (synonym).
Copris antilope Fabricius, 1798 (synonym).
Copris metallicus Fabricius, 1798 (synonym).
Onthophagus intermedius Reiche, 1840 (synonym).
Onthophagus lusinganus D’orbigny, 1905 (synonym).

Digitonthophagus gazella (Fabricius)_580

Distribution: southern US states. (from east to west). Introduced from Indoafrican region, to Texas in the 1970. (Noriega et al. 2010).

Collection Sites: Louisiana (Caddo Parish, Shreveport; Rapides Parish, Alexandria)

Description: Size is 10-13mm; elytral color may vary per specimen from light yellowish brown to dark brown; male has bifid-head horn; major male has longer horn while minor male has shorter horn; horn is absent on female; adults attracted to light, and very commonly found in June-August in central Louisiana.

References:
Noriega, J.A., F.G. Horgan, T.H. Larsen & G. Valencia. 2010.
Records of an invasive dung beetle species, Digitonthophagus gazella (Fabricius, 1787) (Coleoptera: Scarabaeidae), in Peru. Acta Zoológica Mexicana (n.s.) 26(2): 451-456.

Karimbumkara, S.N. 2012. “Digitonthophagus gazella – Classifications”  In Digitonthophagus gazella. Accessed 12 August 2016, available from Encyclopedia of Life, http://eol.org/pages/142016/names