Ensign Wasp

Front wing of Gasteruptiid

HELORIDS Family Heloridae Not illus.

Identification: Antennae 15-segmented, and rising at middle of face. Venation normal. 1st discoidal cell in FW triangular. 4 mm.

One very rare but widely distributed species of helorid occurs in the U.S. Its larva is a parasite of lacewings.

VANHORNIIDS Family Vanhorniidae

Identification: Mandibles with tips directed outward, and not meeting when closed. Abdomen somewhat elongate, the 1st segment occupying most of abdomen. Antennae 13-segmented. Trochanters 1-segmented.

Our only species is very rare and occurs in the Northeast. It is 6-8 mm., black, with a somewhat reduced wing venation. Larvae parasitize the larvae of Eucnemidae.

ROPRONIIDS Family Roproniidae

Identification: Appearance: about 10 mm., thorax moderately robust and black, abdomen small, somewhat triangular, laterally flattened, with a long petiole, and brownish. Venation normal, 1st discoidal cell in FW irregularly 6-sided. Antennae 14-seg-mented, rising at middle of face. Trochanters 1-segmented or indistinctly 2-segmented.

Three very rare species occur in the U.S., 2 in the East and 1 in California and Oregon. Larvae parasitize sawflies.

PROCTOTRUPIDS Family Proctotrupidae

Identification: Characteristic venation: FW with a costal cell, a large stigma, and a very small marginal cell. Antennae 13-segmented, threadlike, and rising at middle of face. Abdomen spindle-shaped, with a short cylindrical petiole. Trochanters

I-segmented.

Proctotrupids are moderately common insects that vary from about 3 to 10 mm.; the abdomen is often brownish. Little is known of the larval stages, but some are known to parasitize beetles.

CERAPHRO NID S Family Ceraphronidae

Identification: Chalcidlike, but pronotum in lateral view triangular and extending to tegulae. Antennae elbowed, 9- to

II-segmented, and rise low on face. Venation reduced. HW without a distinct jugal lobe. Trochanters 2-segmented. Abdomen rounded laterally.

This is a large group of small black insects, mostly less than 4 mm.; a few are wingless. Larvae are parasites of a variety of insects.

DIAPRIIDS Family Diapriidae

Identification: Small to minute, black and shining, fairly common. Antennae 11- to 15-segmented, threadlike, and rising on

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