Two new endemic species of Chrysopodes (Neosuarius) (Neuroptera, Chrysopidae) from the Galapagos Islands

Abstract

Citation: Tauber CA, Tauber MJ (2010) Two new endemic species of Chrysopodes (Neosuarius) (Neuroptera: Chrysopidae) from the Galápagos Islands. ZooKeys 42: 47-78. doi: 10.3897/zookeys.42.359 Abstract Two new species that were previously undistinguished from the Galápagos endemic Chrysopodes (Neosuarius) nigripilosus (Banks), are described. Th ese descriptions double, from two to four, the number of endemic green lacewing species known from the archipelago. Th e four species include: Chrysoperla galapagoensis (Banks), Chrysopodes (N.) nigricubitus sp. n.; C. (N.) nigripilosus; and C. (N.) pecki sp. n. Th ree of these species -C. (N.) nigripilosus, C. (N.) nigricubitus and Chrysoperla galapagoensis -each occur on more than one island, whereas C. (N.) pecki is known only from the summits of two craters on Isabela Island. A suite of very distinctive features diff erentiates the three Galápagos Chrysopodes (N.) species from their congeners on mainland South America. Subtle, but consistent characteristics separate the three Galápagos species from each other. Th e small degree of morphological divergence among the Galápagos lacewings is in marked contrast to the spectacular radiation of Hawaiian lacewings; the processes of diversifi cation and speciation may diff er signifi cantly between the two island archipelagos.

Revision of Neosuarius, a subgenus of Chrysopodes (Neuroptera, Chrysopidae)

“…58; also see Fig. 10 in Tauber and Tauber 2010), and large, eversible pouches above the tip of S8+9 (Fig. 61c).…”

“…58b). Th e female internal genital structures are very similar to those of C. (N.) nigripilosus and C. (N.) pecki; i.e., the spermatheca is elongate and tubular; the spermathecal duct is short and lightly sclerotized; the bursa is large and leathery; the bursal glands are bulbous and they bear elongate accessory ducts (Tauber and Tauber 2010). However, the external structure of the subgenitale distinguishes females of the three species (see Fig.…”

“…Th e second intracubital crossvein is also arched, crassate and bears a large swelling that is absent from C. (N.) nigripilosus and much smaller in C. (N.) pecki. In addition, there are slight, but consistent diff erences between the species in the lengths of the pronotum and tergite 6; in C. (N.) nigricubitus, the pronotum is longer, the pronotal W : L ratio is higher, and L:W ratio of the T6 is longer than it is in C. (N.) nigripilosus, but it is shorter than that in C. (N.) pecki (see Table 2 in Tauber and Tauber 2010). Also, the abdominal sternites of the C. (N.) nigricubitus females are without brown markings (Fig.…”

“…Before the publication of this study, 19 species were assigned to Chrysopodes subgenus Neosuarius; 17 were listed in the "Neuropterida Species of the World" on-line catalogue (Oswald 2007) and an additional two were recently described (Tauber and Tauber, 2010;see Table 1 ) poujadei] do not fi t the new, restricted defi nition of the subgenus proposed here; they are removed from the subgenus and will be treated elsewhere. Specimens of Chrysopodes (Neosuarius) karinae Freitas and Penny, 2001, were not made available.…”

“…Th ese specimens are in alcohol, and their printed labels read: (1) Tables 1 and 2 in Tauber and Tauber (2010) for the ranges in head and body size and wing features. (Banks, 1924) Figs 40d, 41d, 57a, b, 59b, 60-62 (Banks, 1924 (Fig.…”