This New World genus contains nine described species classified in the Nemoleontini. Larvae have been found for five species (Miller and Stange, unpublished data)

Stange, Lionel A.

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228  Volume 14, No.4, December, 2000, INSECTA MUNDI Observations on the biology of the antlion genus Glenurus Hagen (Neuroptera: Myrmeleontidae) This New World genus contains nine described species classified in the Nemoleontini. Larvae have been found  for  five  species  (Miller  and  Stange, unpublished data). The larvae have only two man-dibular teeth  and the  labial  palpus has  only  2 segments. These characters are unknown in other genera of the Nemoleontini. Larvae live in dry tree holes (Miller, R. and L. A. Stange, 1983, Description and biology of Acrolophus pholeter, (Lepidoptera: Tineidae),  a  new moth commensal from  Gopher Tortoise burrows in Florida.  Proceedings  of the Entomological Society of Washington 90:164-178.), in litter under rocks or under tree roots,  or (G. gratus) live in Gopher Tortoise burrows (Davis, D. R. and E. G. Milstrey, 1988, The ant-lions of  Florida. Glenurus gratus  (Say)  (Neuroptera:  Myrmeleon-tidae). Florida Department of  Agriculture Consum-er and Services, Division of Plant Industry, Ento-mology Circular 251:1-4.). They are very slow mov-ing except for G. proi which moves faster than the other species. Glenurus gratus (Say) 1839. Larvae have been found in both dry tree holes (Miller and Stange 1983) and in gopher tortoise burrows  (Davis  and Milstrey 1988) in Florida.  In both cases animal feces were present. In the tree hole there was abundant squir-rel excrement whereas in the gopher tortoise bur-rows the larvae were found in the area of tortoise excrement  where  the  tineid  moth,  Acrolophus pholeter Davis, and other insects were present feed-ing on the excrement. The G.  gratus larvae were active predators on the tineid moth larvae and lived near the entrance of the burrows where drier, looser sand was present mixed with dry leaves. Glenurus luniger Gerstaecker 1893. Larvae of this species were found in leaf litter under rock over-hangs and also in dry wood debris in tree stumps discovered in Mexico. Glenurus penningtoni (Navas) 1917.  Larvae were found living in dry wood debris in tree stumps in Argentina. GlenurusproiNavas 1929. Thirdinstarlarvaewere found under a large, ground level tree root overhang at Rio Salado, 7 miles south of Colima, Mexico. An associated rodent burrow was located in the back of this root overhang. All of the larvae were on the surface and nearly completely covered with debris including rodent pellets except part of the highly modified (shortened) head. These are the only known larvae in the New World which purposely place debris over nearly their whole bodies using their mandibles. They are the most rapid predators of the known Glenurus larvae. Glenurus snowii Banks 1907. A few  larvae were found in the Santa Rita mountains of southern Arizona living in dry wood debris in a tree stump. This is Entomology Contribution No. 917, Bureau of Entomology, Nematology & Plant Pathology. Literature cited Davis, D. R. and E. G. Milstrey. 1988. The ant-lions of Florida. Glenurus gratus (Say)  (Neu-roptera: Myrmeleontidae). Florida Department of  Agriculture Consumer and Services, Division of Plant  Industry, Entomology Circular 251:1-4. Miller, R. and L. A. Stange. 1983. Description and biology of Acrolophus pholeter,  (Lepidoptera: Tineidae), a new moth commensal from Gopher Tortoise burrows in Florida. Proceedings of the Entomological  Society of Washington 90:164-178. Lionel A. Stange, Florida State Collection of Arthropods, Division of Plant Industry, Flor-ida Department of  Agriculture and Consumer Services. P.O. Box  147100 Gainesville, FL  32614-7100 USA 

Observations on the biology of the antlion genus Glenurus Hagen (Neuroptera: Myrmeleontidae)

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