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Genus Rasahus

Corsair Assassin Bug - Rasahus??? - Rasahus biguttatus Rasahus biguttatus Orange and Black - Rasahus hamatus Assassin bug?  - Rasahus biguttatus 822W06 - Rasahus hamatus - male 901W05 - Rasahus hamatus Rasahus hamatus Rasahus thoracicus? - Rasahus thoracicus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Heteroptera (True Bugs)
Infraorder Cimicomorpha
Family Reduviidae (Assassin Bugs)
Subfamily Peiratinae (Corsairs)
Genus Rasahus
Other Common Names
Orangespotted Assassin Bug, Corsair
Explanation of Names
Rasahus Amyot & Serville 1843
from Hebrew rashah (רשע) 'rascal'
4 spp. in our area
16-20 mm
Large, dark reddish-brown, corium in part yellow, membrane with a large yellow median spot (1). Blatchley (2) also notes that "front tibiae but little dilated near apex in front of the elongate spongy fossa; corium and membrane of elytra with a yellow spot"--characters separating from Melanolestes. Other features(2):
eyes are larger and more convex than in Melanolestes
ocelli larger, more oval and set diagonally on a bilobed tubercle--compared to Melanolestes.
scutellar spine compressed, longer and more slender--compared to Melanolestes.
key to eastern species(2):
Inner portion of basal half of corium as far as tip of the clavus, yellow; clavus black at base, its apical half or more yellow; body of male narrow, the connexivum narrowly or not at all exposed. -->hamatus
Basal half of corium and the clavus both in great part yellow; body broad, the connexivum widely exposed in both sexes.-->biguttatus
neotropical group ranging into so. US: R. biguttatus NC-FL west to IA-TX-CA(1), R. hamatus se. US; other spp. southwestern
Ground-loving, frequently found under rocks. Comes to lights.
Print References
Amyot C.J.B., Serville A. (1843) Histoire naturelle des insectes. Hémiptères. Paris: Librairie encyclopédique de Roret. (Full text)
Works Cited
1.How to Know the True Bugs
Slater, James A., and Baranowski, Richard M. 1978. Wm. C. Brown Company.
2.Heteroptera of Eastern North America
W.S. Blatchley. 1926. The Nature Publishing Company.