Oncocephalus

Classification

Phylum: Arthropoda
Subphylum: Hexapoda
Class: Insecta
Order: Hemiptera
Suborder: Heteroptera
Infraorder: Cimicomorpha
Family: Reduviidae
Subfamily: Stenopodainae
Genus: Oncocephalus

Pronunciation

How to pronounce Oncocephalus: /ˌɒŋkoʊˈsɛfələs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Oncocephalus geniculatus - inat 395532552 by {{{name}}}. Used under a CC BY-SA 4.0 license.

Oncocephalus nubilus - inat 367068545 by {{{name}}}. Used under a CC BY 4.0 license.

Summary

Oncocephalus is a genus of assassin bugs belonging to the family Reduviidae, characterized by notable physical traits such as the incrassate profemur and a unique rostral segment structure. It comprises at least 210 species, mainly distributed in the Old World but also found in the southern United States.

Physical Characteristics

Size ranges from 13-18 mm. Key features include a strongly incrassate profemur, which distinguishes it from other stenopodaines, and a quadrate head with an unelevated ocellar region.

Identification Tips

The first rostral segment is not longer than the second, differentiating Oncocephalus from Ctenotrachelus and Diaditus. Look for the strongly incrassate profemur as a primary identification marker.

Habitat

Primarily found in the Old World, with some species extending into the southern United States; they are often attracted to lights at night.

Distribution

Mostly found in the Old World, with over 200 described species worldwide. In the southern United States, there are several species present.

Diet

As a genus of assassin bugs, members of Oncocephalus primarily feed on other insects, employing predatory behavior.

Ecosystem Role

As predators of other insects, assassin bugs in the genus Oncocephalus play a role in controlling pest populations.