The Sierolomorphidae are a family of about 10 known species of wasp

Wasp

The term wasp is typically defined as any insect of the order Hymenoptera and suborder Apocrita that is neither a bee nor an ant. Almost every pest insect species has at least one wasp species that preys upon it or parasitizes it, making wasps critically important in natural control of their...

s found in Tropical America and Asia. They are rare and very little is known of their biology.

The coxa (basal segment of the leg) of the hind and midlegs are next to each other and the hindwing does not have claval or jugal lobes. The first metasoma

Metasoma

The metasoma is the posterior part of the body, or tagma, of arthropods whose body is composed of three parts, the other two being the prosoma and the mesosoma. In insects, it contains most of the digestive tract, respiratory system, and circulatory system, and the apical segments are typically...

l segment does not have a true node but can appear like that of the ants. The metasomal sternum of the first segment separated from the second by a constriction. Sexual dimorphism varies among species from slight to marked with both males and females having wings but females are sometimes wingless. Adults are predominantly dark brown or black in colour. They are solitary and the larvae are suspected to be ectoparasitoids of other insects.

External links

• http://lib.uky.edu/ETD/ukyento2004t00207/Vespoidea/habitus/Sierolomorphidae.pdf
• http://bugguide.net/node/view/161414