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Family Myrmeleontidae - Antlions including Owlflies

Myrmeleon Doodlebug (Antlion larva) - Myrmeleon Antlion? - Brachynemurus abdominalis Unknown Antlion from Santa Cruz Island - Clathroneuria schwarzi - male antlion - Brachynemurus sackeni - male Glenurus luniger? - Glenurus luniger Myrmeleontidae: Heperoleon sp.? Dark Owlfly - Ululodes floridanus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Neuroptera (Antlions, Lacewings, and Allies)
Suborder Myrmeleontiformia (Antlions and Allies)
Family Myrmeleontidae (Antlions including Owlflies)
Other Common Names
Doodlebugs (larvae, esp. Myrmeleon)
Antlion lacewings
Synonyms and other taxonomic changes
Key by Banks (1927).(1)
Explanation of Names
Myrmeleontidae Latreille 1802
~100 spp. in 22 genera in our area(2)(3)
adult body length 40-80 mm
Most of the typical antlions have antennae that are fairly short (about the length of the head and thorax combined) and either clubbed or curved (somewhat like a field hockey stick). Wings are transparent and in many genera mottled with black or brown pigmentation.

Owlflies are a specialized subfamily of antlion that have much longer, strongly clubbed antennae and larger, bulging eyes.
They live in tiny, conical pits or craters in the ground in dry or sandy areas. These pits are about 1.5-2" wide and 1-2" deep with sharply slanting sides. (4)
Larvae are voracious predators that lie in wait for their insect prey, though different genera have different modes of predation. Myrmeleon spp. (often known as "doodlebugs") are most frequently noticed and are the only genus in our area to dig a shallow, funnel-shaped pit in loose sand to trap prey. Members of some other genera such as Glenurus and Dendroleon aren't even found in the sand and instead live in tree holes as ambush predators.(5)
adults mostly nocturnal or crepuscular and may come to lights
See Also
Dobsonflies have narrow antennae with tapered ends, bigger heads and jaws

Fishflies have serrate (with sawlike teeth) or pectinate (feathery) antennae
Print References
Banks N. (1943) New Neuroptera and Trichoptera from the United States. Psyche 50: 74-81 (Full text)
Works Cited
1.Revision of the Nearctic Myrmeleonidae
Nathan Banks. 1927. Bulletin of the Museum of Comparative Zoology, Vol. 68, No. 1: 1-84.
2.Species catalog of the Neuroptera, Megaloptera, and Raphidioptera of America North of Mexico
Penny N.D., Adams P.A., Stange L.A. 1997. Proc. Calif. Acad. Sci. 50: 39-114.
3.Antlions of Hispaniola (Neuroptera: Myrmeleontidae)
R.B. Miller, L.A. Stange. 2011. Insecta Mundi 0182: 1-28.
4.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.
5.The ant-lions of Florida. II. Genera based on larvae (Neuroptera: Myrmeleontidae)
Lionel A. Stange. 1980. Entomology Circular No. 221.