Larvae of Hemiargus hanno (Stoll, 1790) (Lepidoptera, Lycaenidae, Polyommatinae) are for the first time reported to be attended under field conditions by ants of the formicine genus Brachymyrmex Mayr, 1868 (Myrmelachistini). Structural features of the last instar larva and pupa of H. hanno are described and illustrated with the aid of scanning electron microscopy (SEM).

Mating couples of two species of the genus Chimarra Stephens, C. (Curgia) brasiliana (Ulmer, 1905) and C. (Curgia) ypsilon Flint, 1983, were collected with light trap at Paraná State, Brazil. The females are described and illustrations of the genitalia are presented.

From 126,340 adult specimens of Trichoptera captured with light trap during one year of the project called "Survey of the Entomological Fauna in Paraná State" (Paraná, Brazil), 6,375 belong to the family Leptoceridae. The individuals of the family were identified and a list of species is presented. The following species are recorded for the first time to Paraná State: Achoropsyche duodecimpunctata (Navas. 1916); Nectopsyche aureovittala Flint, 1983; Nectopsyche fuscomaculata Flint, 1983; Nectopsyche muhni (Navas, 1916); Nectopsyche separata (Banks, 1920); Nectopsyche ortizi Holzenthal, 1995; Nectopsyche splendida (Navas, 1917) and Tripleclides gracilis (Burmeister, 1839). Discussion on individual abundance and species seasonality are also presented.

During one year of the project called "Survey of the Entomological Fauna in Paraná State" (henceforth PROFAUPAR), 126,340 adult specimens of Trichoptera were collected with light trap. The individuais of the family Hydropsychidae were identified and a list of species is presented. Eighteen species in four genera were identified. From this, S. (R.) discalis Flint, 1972,5. (R.) paramnsis Flint, 1983;S (R.) spinulosa Flint, 1972 are for the first time registered for Brazil and Leptonema sparsum (Ulmer, 1905), Macrostemum hyalinum (Pictet, 1836), S. (Smicridea) albosignata Ulmer, 1907; S. (Rhyacophylax) dentifera Flint, 1983; S. (R.) iguazu Flint, 1983; S. (R.) piraya Flint, 1983; S. (R.) unguiculaia Flint, 1983; S. (R.) vermiculata Flint, 1978 and S. (R.) weidneri Flint, 1972, for Paraná State. Discussion about the individuais abundance and species seasonality is presented.