Strategus splendens (Palisot de Beauvois, 1809) (Coleoptera: Scarabaeidae: Dynastinae)

Strategus splendens (Palisot de Beauvois, 1809)
Scarabaeus splendens Palisot de Beauvois 1809 (original combination).
Scarabaeus boscii Palisot de Beauvois 1809 (synonym).
Anastrategus cognatus Casey 1915 (synonym).
Anastrategus carolinensis Casey 1915 (synonym).

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Description: Strategus splendens (Palisot de Beauvois) is known to occur from southeastern USA (Ratcliffe 1976; Ratcliffe and Cave 2017). Kim and Brou (2018) reported S. splendens for the first time based on a single record, a male from the collection of Louisiana State Arthropod Museum, dated 10 June 1958, Baton Rouge, LA. The pictured specimen is from East Baton Rouge Parish, Louisiana, deposited in Louisiana State Arthropod Museum (Baton Rouge, LA, USA).

References:

Kim, J. and V. A. Brou, Jr. 2018. The Genus Strategus Kirby (Coleoptera: Scarabaeidae: Dynastinae) in Louisiana. The Southern Lepidopterists’ News, 40, 100-105.

Ratcliffe, B. C. 1976. A revision of the genus Strategus (Coleoptera: Scarabaeidae). Bulletin of the University of Nebraska State Museum 10: 93-204.

Ratcliffe, B. C. and R. D. Cave. 2017. The dynastine scarab beetles of the United States and Canada (Coleoptera: Scarabaeidae: Dynastinae). Bulletin of the University of Nebraska State Museum 30: 1-298.

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Strategus antaeus Drury, 1773 (Coleoptera: Scarabaeidae: Dynastinae)

Strategus antaeus Drury, 1773
Scarabaeus antaeus Drury 1773 (original combination).
Scarabaeus maimon Fabricius 1775 (synonym).
Strategus divergens Casey 1915 (synonym).
Strategus atrolucens Casey 1915 (synonym).
Strategus pinorum Casey 1915 (synonym).
Strategus septentrionis Casey 1915 (synonym).
Strategus sinuatus Casey 1915 (synonym).
Strategus semistriatus Casey 1915 (synonym).
Strategus antaeus houstonensis Knaus 1925 (synonym).

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Description: Strategus antaeus (Drury) is known to occur in eastern USA west to Oklahoma and Texas (Ratcliffe 1976) with first report by Ratcliffe and Cave (2017) from Louisiana based upon a series of specimens previously collected in Natchitoches Parish by Junsuk Kim (Kim and Brou 2018). Kim and Brou (2018) stated S. antaeus adults in Louisiana actively flies from May to September with peak adult flight ranges from the last week of May to the first week of June. The pictured specimens are from Natchitoches Parish, Louisiana.

References:

Kim, J. and V. A. Brou, Jr. 2018. The Genus Strategus Kirby (Coleoptera: Scarabaeidae: Dynastinae) in Louisiana. The Southern Lepidopterists’ News, 40, 100-105.

Ratcliffe, B. C. 1976. A revision of the genus Strategus (Coleoptera: Scarabaeidae). Bulletin of the University of Nebraska State Museum 10: 93-204.

Ratcliffe, B. C. and R. D. Cave. 2017. The dynastine scarab beetles of the United States and Canada (Coleoptera: Scarabaeidae: Dynastinae). Bulletin of the University of Nebraska State Museum 30: 1-298.

Strategus aloeus (Linnaeus, 1758) (Coleoptera: Scarabaeidae: Dynastinae)

Strategus aloeus (Linnaeus, 1758)
Scarabaeus aloeus Linnaeus 1758 (original combination).
Geotrupes semiramis Fabricius 1801 (synonym).
Scarabaeus aesalus Laporte 1840 (synonym).
Strategus julianus Burmeister 1847 (synonym).
Strategus piosomus Kolbe 1906 (synonym).
Strategus julianus arizonicus Schaeffer 1915 (synonym).
Strategus roosevelti Casey 1915 (synonym).
Strategus frontalis Casey 1915 (synonym).
Strategus tarsalis Casey 1915 (synonym).
Strategus gaillardi Casey 1915 (synonym).

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Description: Strategus aloeus (Linnaeus) is most commonly and widely distributed species in the genus ranged from the southern USA through Central America to central Brazil and Bolivia (Ratcliffe 1976; Ratcliffe and Cave 2017). This species in state Louisiana occurs from January to October, with peak flight period in late June to early July. (Kim and Brou 2018).  The pictured specimens are from Natchitoches Parish, Louisiana (male) and Rapides Parish, Louisiana (female).

References:

Kim, J. and V. A. Brou, Jr. 2018. The Genus Strategus Kirby (Coleoptera: Scarabaeidae: Dynastinae) in Louisiana. The Southern Lepidopterists’ News, 40, 100-105.

Ratcliffe, B. C. 1976. A revision of the genus Strategus (Coleoptera: Scarabaeidae). Bulletin of the University of Nebraska State Museum 10: 93-204.

Ratcliffe, B. C. and R. D. Cave. 2017. The dynastine scarab beetles of the United States and Canada (Coleoptera: Scarabaeidae: Dynastinae). Bulletin of the University of Nebraska State Museum 30: 1-298.

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).

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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.