Chrysopodes (Neosuarius) nigricubitus Tauber and Tauber 2010
Creators: name: Tauber, Catherine
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Neuroptera
Chrysopidae
Chrysopodes
Chrysopodes nigricubitus

description: <i>Chrysopodes (Neosuarius) nigricubitus</i> Tauber and Tauber, 2010 Figs 40c, 41c, 56, 57c, 58, 59a, 64b <i>Chrysopodes</i> (<i>Neosuarius</i>) <i>nigricubitus</i> Tauber and Tauber, 2010: 60 [CAS, Holotype (by original designation): “ Ecuador, Galápagos Archipelago, Isla Santa Cruz, Table Mountain, 440 meters (D. Q. Cavagnaro)”]. <b>Diagnosis.</b> The three <i>Chrysopodes</i> species that are endemic to the Galápagos Islands – <i>C</i>. (<i>Neosuarius</i>) <i>nigripilosus</i>, <i>C</i>. (<i>N</i>.) <i>nigricubitus</i> and <i>C</i>. (<i>N</i>.) <i>pecki</i> – are distingished from the mainland species by their slightly smaller size (forewing length: 10.2–13.7 mm, vs. 13.9–16.7 for the mainland species), tan to brown bodies with mottled spots (not streaks) of dark brown; brown vertex, and brown to dark brown facial markings. The males have elongate, setose ducts (probably glandular) that originate within the gonosaccus (immediately below the mediuncus) and extend into the gonarcal region (Fig. 58; also see Fig. 10 in Tauber and Tauber 2010), and large, eversible pouches above the tip of S8+9 (Fig. 61c). <i>Chrysopodes</i> (<i>Neosuarius</i>) <i>nigricubitus</i> Tauber and Tauber is one of two species of endemic <i>Chrysopodes</i> (<i>Neosuarius</i>) recently described from the Galápagos Archipelago [see <i>C</i>. (<i>N</i>.) <i>nigripilosus</i>]. Currently it is known from two islands: Santa Cruz (Table Mountain and Horneman Farm) and Pinta (420’). In general appearance, the adults share many features with the more common species, <i>C</i>. (<i>N</i>.) <i>nigripilosus</i>; i.e., they have small, robust, brownish bodies, similar head and wing markings. The most distinguishing characteristic of <i>N</i>. <i>nigricubitus</i> is the suffusion of black or dark brown pigment (coloration) around several of the crossveins in the forewings, most notably the second intracubital crossvein (Fig. 56). This diffusion is absent from <i>C</i>. (<i>N</i>.) <i>nigripilosus</i> and much less marked in <i>C</i>. (<i>N</i>.) <i>pecki</i> (Figs 60, 63). The second intracubital crossvein is also arched, crassate and bears a large swelling that is absent from <i>C</i>. (<i>N</i>.) <i>nigripilosus</i> and much smaller in <i>C</i>. (<i>N</i>.) <i>pecki</i>. In addition, there are slight, but consistent differences between the species in the lengths of the pronotum and tergite 6; in <i>C</i>. (<i>N</i>.) <i>nigricubitus</i> <i>,</i> the pronotum is longer, the pronotal W: L ratio is higher, and L:W ratio of the T6 is longer than it is in <i>C</i>. (<i>N</i>.) <i>nigripilosus</i>, but it is shorter than that in <i>C</i>. (<i>N</i>.) <i>pecki</i> (see Table 2 in Tauber and Tauber 2010). Also, the abdominal sternites of the <i>C</i>. (<i>N</i>.) <i>nigricubitus</i> females are without brown markings (Fig. 57c), whereas on <i>C</i>. (<i>N</i>.) <i>nigripilosus</i> (S5-S7) and <i>C</i>. (<i>N</i>.) <i>pecki</i> (S5) females they are present (Figs 57b, d). <i>C</i>. (<i>N</i>.) <i>nigricubitus</i> males have abdominal sclerotization and genitalia that are very similar to those of <i>C</i>. (<i>N</i>.) <i>nigripilosus</i>. However, there is one notable difference: unlike <i>C</i>. (<i>N</i>.) <i>nigripilosus</i> <i>,</i> in which the lateral arms of gonarcus are directed downward next to the mediuncus, in <i>C</i>. (<i>N</i>.) <i>nigircubitus</i> the gonarcal arms are spread widely, only the tips of the gonarcal arms bend downward, and the gonarcal structure is relatively flat in lateral view (Fig. 58b). The female internal genital structures are very similar to those of <i>C</i>. (<i>N</i>.) <i>nigripilosus</i> and <i>C</i>. (<i>N</i>.) <i>pecki</i> <i>;</i> 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. 59). <b>Description.</b> Available in Tauber and Tauber (2010). <i>Larvae</i>. Unknown. <i>Eggs</i>. Unknown. <b>Biology.</b> Unknown. Large grains of pollen were in the guts of some males and females. Adult specimens were collected in February, April and May. <b>Type material</b> . <b> <i>Chrysopodes (Neosuarius) nigricubitus</i> Tauber &amp; Tauber.</b> The holotype (a male) and 18 paratypes (6 males, 10 females, 2 unknown sex) from two localities on Santa Cruz Island are in the California Academy of Sciences. The holotype is labelled: (1) “ Galapagos Arch. / Isla SantaCruz / Table Mtn. 440M. / IV- 16–1964 ”; (2) “ D. Q. Cavagnaro / Collector ”; (3) “Image: C. A. Tauber / Table.M.#7 / head,thor,ab”; (4) “ HOLOTYPE ♁ / <i>Chrysopodes</i> (<i>Neosuarius</i>) <i>/ nigricubitus</i>; des. Tauber / &amp; Tauber, 2010 ” [red]. Thirteen paratypes (3 males, 8 females, 2 unknown sex) have identical labels (1) and (2); some also carry label (3) “Image: C.A.Tauber …”; all carry label (4) “ PARATYPE / <i>Chrysopodes</i> (<i>Neosuarius</i>) <i>/ nigricubitus;</i> det. Tauber / &amp; Tauber. 2010” [yellow]. Five paratypes (3 males, 2 females) are from the second locality on Santa Cruz Island; they bear the following labels: (1) “ Galapagos Arch. / Isla SantaCruz / HornemanFarm / 220M V-7–1964 ”; (2) “ D. Q. Cavagnaro / Collector ”; (3) “ PARATYPE / <i>Chrysopodes</i> (<i>Neosuarius</i>) <i>/ nigricubitus;</i> des. Tauber / &amp; Tauber, 2010 ” [yellow]. There are an additional nine paratypes (4M, 5F) in the Institut royal des Sciences naturelles de Belgique, Brussels (IRSNB). These specimens are in alcohol, and their printed labels read: (1) “ Ecuador, Galápagos, Pinta, western side of island, 420 m, 30/II/2000, L. Baert, K. Desender &amp; J.-P. Maelfait, B.00/0100”; (2) “ PARATYPE / <i>Chrysopodes</i> (<i>Neosuarius</i>) <i>nigricubitus</i> Tauber &amp; Tauber, des. 2010”. <b>Specimens examined.</b> Type material only. <b>Known distribution</b> . Endemic to the Galápagos Islands (known only from two localities on Santa Cruz Island). <b>Variation.</b> The variation in the known specimens is slight. See Tables 1 and 2 in Tauber and Tauber (2010) for the ranges in head and body size and wing features.
description: Published as part of <i>Tauber, Catherine, 2010, Revision of Neosuarius, a subgenus of Chrysopodes (Neuroptera, Chrysopidae), pp. 1-104 in ZooKeys 44 (44)</i> on pages 78-81, DOI: 10.3897/zookeys.44.387, http://zenodo.org/record/576660
description: {"references": ["Tauber CA, Tauber MJ (2010) Two new endemic species of Chrysopodes (Neosuarius) (Neuroptera: Chrysopidae) from the Galapagos Islands. ZooKeys 42: 47 - 78."]}