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).

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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).

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.

Dyscinetus morator (Fabricius, 1798) (Coleoptera: Scarabaeidae: Dynastidae)

Dyscinetus morator (Fabricius, 1798)
Scarabaeus morator Fabricius 1798 (original combination).
Chalepus trachypygus Burmeister, 1847 (synonym).
Dyscinetus trachypygus discedens Casey, 1915 (synonym).
Dyscinetus borealis
Casey, 1915 (synonym).
Dyscinetus bitumerosus Casey, 1915 (synonym).D.morator_580

Aedeagus_sharpened_580

 

Distribution: Eastern and southern US southwards to northeastern Mexico. (Ratcliffe et al. 2013).

Collection Sites: Louisiana (Caddo Parish, Shreveport; Bossier Parish, Bossier City; Rapides Parish, Alexandria; Natchitoches Parish, Provencal; Natchitoches Parish, Natchitoches).

Description: English name is known as Rice Beetle, though they are not yet known to feed on rice or other crop plants. (Ratcliffe et al. 2013).

References:
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.