There were six specimens of Neuroptera collected, in five families. The irony is that the most abundant and most speciose family, Chrysopidae, was not encountered.
The beaded lacewings often have hairy wings and a scalloped winged margin that creates a strange shape. Adults, when clinging to twigs and grass blades often sway back and forth imitating a breeze. At this time larvae are only known to inhabit termite nests and feed on the termites. Only a single specimen of this family has previously been collected in the Philippine Islands. That was a specimen of Isoscelipteron philippinicola Aspöck & Aspöck, 1991 that was collected in 1915 from an unspecified locality. Much to our surprise, a specimen appeared among the moth specimens in the layering boxes brought back from the Philippines. Therefore, the specimen collected on this expedition from Los Baños is the first recorded specimen of this family from the Philippines in 96 years.
The single specimen of dusty-wing collected was in the subfamily Aleuropteryginae, and using the key in Meinander (1972) the specimen appears to be in the genus Spiloconis. The genus Spiloconis has nine valid species widely distributed in the Oriental and Indian Ocean, as far south as Australia, although the genus is seldom collected. One species is known from The Philippines (Mindanao and Luzon). It is Spiloconis notata, and is probably the collected specimen.
There were two specimens of Micromus collected. Both appear to be the same species and one is a male.
One specimen of the genus Myrmeleon was collected. This is the most speciose genus of ant-lions in the world with 176 currently valid species. Stange’s (2004) world catalog of ant-lions lists only four species from The Philippines (M. angustipennis, M. celebensis, M. philippinus, and M. viganus).
One specimen of Spilosmylus was collected. This is a widespread genus in the Old World tropics with 97 described species ranging from continental Africa to Asia, Papua New Guinea, and northern Australia, and it is badly in need of revision with much probable synonymy. In New’s (1991) revision of the Oriental Osmylidae, he includes 14 species of Spilosmylus, six of them from The Philippines. The collected specimen has a glazed bulla at the hind margin of the forewing. There are several described species with this structure. One of the species, S. inquinatus, has been collected on Mt. Makiling, only a few miles from where the CAS specimen was collected. However, the description of S. tuberculatus also fits the CAS specimen and is widespread throughout eastern Asia. It was described by Walker in 1853 and would have priority if these species were synonymized.