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Genus Macrocephalus

Ambush Bug - Macrocephalus sp. - Macrocephalus cimicoides Macrocephalus bug 78 - Macrocephalus dorannae Macrocephalus Macrocephalus Reduviid - Macrocephalus cimicoides Macrocephalus dorannae? - Macrocephalus dorannae Macrocephalus dorannae? - Macrocephalus dorannae
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 Phymatinae (Ambush Bugs)
Tribe Macrocephalini
Genus Macrocephalus
Synonyms and other taxonomic changes
re-described by Kormilev (1951)
Macrocephalus prehensilis = Lophoscutus prehensilis
Explanation of Names
Macrocephalus Swederus 1787
7 spp. in our area
Scutellum teardrop-shaped, almost reaches tip of abdomen(1). Species of Macrocephalus possess a distinct raised scutellar callus whereas those in Lophoscutus only have a midlongitudinal carina.
The Macrocephalus found in the United States fall into three groups based on the scutellar callus. Those with a spear-shaped callus include cimicoides Swederus, notatus (Westwood) and manicatus (Fabricius). Those with a arrow-shaped callus include dorannae Evans and barberi Evans. M. arizonicus Cockerell has the callus reduced to a single median carinae with raised reticulate lines though it is unclear how exactly this differs from that of Lophoscutus.
Most spp. in sw. US, 1 sp. in the east: M. cimicoides (NC-FL-TX-CA); related Lophoscutus prehensilis (NC-FL to KS-TX)(1)
Works Cited
1.How to Know the True Bugs
Slater, James A., and Baranowski, Richard M. 1978. Wm. C. Brown Company.