Synonyms and other taxonomic changes
re-described by Kormilev (1951)
Macrocephalus prehensilis = Lophoscutus prehensilis
7 spp. in our area(1)
(9 including those now in Lophoscutus
Scutellum is not short and triangular, as in Phymata
, it is tear-drop shaped, and extends almost to tip of abdomen (2)
. 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 species occur in sw. US, 1 sp. in the east: M. cimicoides
(NC-FL-TX-CA); related Lophoscutus (Macrocephalus) prehensilis
(NC-FL to KS-TX)(2)
Likely spring and early summer (Apr-May in NC)