Enderleina preclara
Creators: name: Derka, Tomáš
name: Figueroa, J. Manuel Tierno De
name: Čiampor, Fedor
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Enderleina
Enderleina preclara

description: Enderleina preclara putative female, nymph and egg   
Figs. 7 –22  
 Female description. (Figs. 7–15): Total length: 12 mm, Forewing: 17 mm. General color (in dorsal view) brown, except for a mostly dark brown head and orange pronotum (Fig. 7), the specimen from Kukenán-tepui is generally darker than the specimens from Acopán-tepui; in lateral and ventral views brown, except for dark brown areas on the head, meso- and metathorax and whitish prothorax (Figs. 8–10). Head (Fig. 7) dark brown from the parietal region to frons, except for whitish anterolateral margins; antennae brown, light brown or whitish in the proximal part; eyes black, three ocelli brown, anterior ocellus ca. 1/3 the diameter of lateral ocelli; head ventral region light brown to whitish, except for a dark brown submentum (Fig. 8). Pronotum (Fig. 7) orange, rectangular, anterior margin convex, corners rounded, prothorax ventrally whitish with a triangular yellowish central area; meso- and metathorax ventrally brown with a dark brown central area (Figs. 8, 10); wings infuscate with brown; legs (Figs. 13–15) brown, except for a dark brown posterior margin of the trochanter, a distal part of the femur and proximal anterior part of the tibia; femur and tibia with narrow paler bald strips. Abdomen and cerci brown, in some individuals with darker spots (Fig. 9), subgenital plate (Figs. 11–12) trapezoidal, longer than the sclerotized band S9, as wide in its distal part as the S9 (see also Fig. 9 for lateral view), a notch on the posterior margin U-shaped (in some cases can resemble V-shaped), longer setae on the distal half; cerci dark brown, with abundant setae.   
 Nymph description. Body length (not including cerci) 10 mm. Body yellowish-brown with some darker areas (Fig. 18). Head (Fig. 19) yellowish-brown with a dark brown triangular band from the parietal region to frons; antennae proximally brown, distally lighter; eyes black, ocelli paler, lateral ocelli larger than anterior ocellus; mouth parts yellowish, except for a brown submentum (Fig. 20). Pronotum (Fig. 19) yellow, in last instars with a visible orange adult pronotum, a yellowish meso- and metanotum (Fig. 18) with U-shaped dark spots; wingpads dark brown, thoracic segments ventrally (Fig. 20) yellowish with darker brown central areas; legs (Figs. 18, 20–22) yellowish, except for a dark brown the posterior margin of the trochanter, a distal part of the femur and proximal anterior part of the tibia; tibiae darker than femurs. Abdominal tergites (Fig. 18) yellowish-brown, lateral parts darker, sternites (Fig. 20) yellowish, last segments darker; cerci dark brown. Gill formulae and other characters agreeing with Stark (1989) diagnosis for Enderleina.   
 Egg description. Eggs are on average 458 µm long (range = 420–480 µm; SD = 14 µm; N = 16), and 300 µm wide (range = 280–320 µm; SD = 10 µm; N = 16). The egg is light yellow, elongate, oval shaped, rounded in the apexes, slightly narrowed at one end (Fig. 16), circular in cross-section. Chorion covered by a coating, smooth, in some areas where this coat was removed, aeropyles could be observed. Aeropyles (Fig. 17) are on average 348 nm diameter (range = 287 – 412 nm; SD = 51 nm; N = 8). Micropyles not observed. The hexagonal chorionic follicle impressions (Fig. 17) not obvious (radius average 19.64 µm, range = 15.69 – 24.34; SD = 3.91 µm; N = 4). The attachment disc not observed, only in some eggs a small button-like structure seemed to be present in the apex of the wider pole. The egg mass covered by a smooth coat, to which each egg was attached by the wider apex.   
 Ecological notes. The flying adults were collected during the day. The sampling sites were 5–8 m wide montane streams with stony and boulder substrate (Figs. 4–6). Water temperature ranged from 16.2 to 19.1 °C. All streams were bordered by riparian forests. The locality below Kukenán-tepui is situated in a secondary savanna, which replaced the original mountain forest, Acopán-tepui localities are surrounded by undisturbed native montane forests and swamps.
description: Published as part of Derka, Tomáš, Figueroa, J. Manuel Tierno De & Čiampor, Fedor, 2019, Enderleina preclara Jewett, 1960 (Plecoptera, Perlidae), from the Venezuelan Guayana-A description of a putative female, nymph and egg, pp. 332-342 in Zootaxa 4585 (2) on pages 335-339, DOI: 10.11646/zootaxa.4585.2.6, http://zenodo.org/record/2637386