Habrophlebia annaba Sartori, Vuataz & Samraoui, 2025

Samraoui, Boudjéma, Vuataz, Laurent & Sartori, Michel, 2025, Endemism and hidden diversity of Habrophlebia, Eaton, 1881 in Algeria’s Northeastern Mountains (Ephemeroptera, Leptophlebiidae), Alpine Entomology 9, pp. 113-151 : 113-151

publication ID	https://doi.org/10.3897/alpento.9.171490
publication LSID	lsid:zoobank.org:pub:866C37ED-D606-406B-953E-062621C7AED7
DOI	https://doi.org/10.5281/zenodo.17742838
persistent identifier	https://treatment.plazi.org/id/76CBCD16-D400-5DDA-87CC-45A4A9D12D95
treatment provided by	Alpine Entomology by Pensoft
scientific name	Habrophlebia annaba Sartori, Vuataz & Samraoui
status	sp. nov.

Treatment

Habrophlebia annaba Sartori, Vuataz & Samraoui sp. nov.

Figs 17 View Figure 17 , 18 View Figure 18 , 19 View Figure 19 , 20 View Figure 20 , 21 View Figure 21

Habrophlebia sp. 9 , Hezil et al. 2025.

Material examined.

Holotype: one nymph in ethanol ( GBIFCH 00654946 ), Algeria, Wilaya of Annaba, Edough, Oued Agab , 36°54'44"N, 7°39'35"E, 750 m, 5.VI.2021, B. Samraoui leg., MZL GoogleMaps .

Paratypes. Algeria, Wilaya of Annaba, Edough, Oued Agab , same data as holotype, 1 nymph in ethanol ( GBIFCH 00654980 ) GoogleMaps ; same locality as holotype, 26.IV.2021, 1 nymph on slide ( GBIFCH 01314689 ) GoogleMaps ; 4.V.2022, 1 female imago in ethanol ( GBIFCH 00654978 ) GoogleMaps ; 16.V.2021, 1 nymph, 1 female imago in ethanol ( GBIFCH 00654977 ) GoogleMaps ; 1.V.2021, 1 male imago in ethanol ( GBIFCH 01118440 ) GoogleMaps ; 5.VI.2021, 1 nymph on slide ( GBIFCH 01314677 ) GoogleMaps ; 10.II.2022, 1 nymph in ethanol ( GBIFCH 00654976 ), 1 nymph on slide ( GBIFCH 01314437 ) GoogleMaps ; 1.VI.2022, 1 nymph on slide ( GBIFCH 00658258 ) GoogleMaps • Wilaya of Annaba, Edough, Oued Zouz , 36°55'54"N, 7°40'03"E, 550 m, 20.III.2022, 15 nymphs in ethanol ( GBIFCH 00654982 ), 1 nymph on slide ( GBIFCH 01118439 ) GoogleMaps ; same locality, 25.IV.2022, 1 female imago in ethanol ( GBIFCH 00654983 ); all B. Samraoui leg., MZL GoogleMaps .

Etymology.

The name Annaba derives from the Arabic ʿannāb (jujube), in reference to the jujube tree ( Ziziphus jujuba ), once abundant in the region. In antiquity, the city was known as Hippo Regius, a major centre of Roman North Africa and the episcopal See of Saint Augustine (354–430 CE). Later, it was renamed Bouna in Arabic and was known as Bône during the French period.

Descriptions.

Nymph. Body length of final instar, excluding caudal filaments, up to 6 mm for male and up to 7 mm for female. Cerci as long as body length.

Coloration. General coloration medium brown; dark brown between ocelli, light brown in front and on the clypeus, especially in young nymphs. Upper portion of male eyes red-brick to reddish brown (Fig. 17 B View Figure 17 ). Antenna with pedicel dark brown, scape greyish brown and filament light brown, more or less entirely whitish in young nymphs. Pronotum medium brown, washed with dark brown in middle and anteriorly, lateral margins whitish; mesonotum medium brown, with dark brown maculae; lateroparapsidal sutures dark brown. Legs light to medium brown; femora dark brown in mature nymphs; tibiae medium brown; tarsi light brown to yellowish. Abdominal tergites dark brown to greyish brown, with two lighter maculae medio-anteriorly, especially well visible on segments I – VII (Fig. 17 A View Figure 17 ). Sternites medium brown in the middle, posterior corner underlined with dark brown laterally, thicker in mature nymphs, nervous ganglia well visible. Cerci and paracercus light brown at base, whitish distally, without dark banding.

Head. Labrum rectangular, ca. 1.55 × wider than long (Fig. 17 C View Figure 17 ); dorsal surface covered distally with scattered stout setae; anterior margin with a row of stout, long and spatulate setae medially; emargination flared, U-shaped with flat denticles; ventral surface with two bunches of stout setae medially. Mandibles similar to other Habrophlebia species, incisor with 3 teeth, the lowest of left mandible with a clear indentation at base (Fig. 17 D View Figure 17 ), kinetodontium with 3 teeth, 10–11 long and thin setae below mola of right mandible (Fig. 17 E View Figure 17 ). Maxilla stocky, subapical row of 7 or 8 pectinate setae (Fig. 17 F View Figure 17 ); maxillary palp with three segments, segment 1 and 2 subequal in length, and longer than segment 3; segment 3 triangular 1.42–1.70 × longer than wide at base; all setae on palp segments stout and entire. Hypopharynx with highly developed superlinguae terminated by a membranous digitation. Labium with rhomboid glossae, outer margin and apex covered by short, broad setae; paraglossae enlarged laterally, covered with fine and long setae on the dorsal surface; with long, thick setae on the outer margin; labial palp with three segments, inner margin of segment 1 highly dilated near the middle, about 1.35 × longer than the maximum width, segments 2 slightly longer than segment 3, both ca. 0.65–0.70 × length of segment 1; segment 3 ca. 1.41–1.54 × longer than wide at base, conical shape and with 8–10 stout and long, simple setae on dorsal surface. Submentum with numerous long, stout and pointed setae laterally; ventral surface with numerous long, stout and pointed setae (Fig. 17 G View Figure 17 ).

Thorax. Pronotum with anterior corners bearing few long and pointed setae laterally, and 5–7 stout and strong setae dorsally. Anterior margin of pronotum with numerous stout setae (Fig. 18 A View Figure 18 ). Fore legs femora elongated, ca. 2.45 × longer than wide, outer margin and upper surface covered with long, entire and pointed setae (Fig. 18 B View Figure 18 ); fore tibiae subequal in length to femora, outer margin with few thin and long setae, inner margin with several rows of long stout and entire setae; tarsi 0.5 × length of tibiae, outer margin with few long and thin setae, inner margin with long and pointed entire setae. Middle legs similar to fore legs, femora ca. 2.6 × longer than wide, dorsal surface of femora with more numerous and slightly longer stout and pointed setae; tibiae and femora of subequal length; tarsi 0.5 × length of tibiae. Hind legs with femora 2.8 × longer than wide (Fig. 18 C View Figure 18 ), dorsal surface covered with stout, long, pointed or blunt and entire (non-feathered) setae (Fig. 18 D View Figure 18 ); hind tibiae as long as hind femora, outer margin with numerous stout, pointed setae; inner margin with stout, pointed and entire setae; tarsi 0.5 × length of tibiae, outer margin with long and thin setae, inner margin with long, stout, pointed and entire setae. Claws of all legs slightly hooked, with 15–17 denticles that decrease in size from the apex to the tarsus (Fig. 18 E View Figure 18 ).

Abdomen. Posterolateral expansions only on segments VIII and IX. Posterior margin of tergite IX with triangular, broad, pointed spines, ca. 1.5–2 × longer than wide at base (Fig. 19 A View Figure 19 ); tergite VIII with triangular, broad spines 1.5–2 × longer than wide (Fig. 19 B View Figure 19 ); tergite VII with slightly shorter spines than tergite VIII (Fig. 19 C View Figure 19 ); tergite VI, with short and broad spines (Fig. 19 D View Figure 19 ), and tergite V with minute but broad spines (Fig. 19 E View Figure 19 ); tergites I – IV with barely visible spines. Gills present on segments I – VII; all gills elongated with long filaments; dorsal lamella bearing 8–10 filaments, ventral lamella with 3–6 filaments (Fig. 19 F View Figure 19 ).

Imagos. Male imago. Size: body length: 5.5–6.0 mm; forewings missing; cerci and terminal filament broken.

Head dark brown; basal portion of compound eyes blackish, upper portion orange brown, scape and pedicel dark brown, flagellum broken.

Thorax. Pronotum dark brown; meso- and metanotum uniformly dark brown, pleurae, coxae, and trochanters greyish brown, washed with dark brown; fore femora and fore tibiae dark brown, tarsi light brown, apex of each segment dark brown; mid- and hind legs with femora light brown, dark brown distally, tibiae medium brown, dark brown at base, and tarsi medium brown, except the last segment light brown. Femur / tibia / tarsi ratio in fore leg: 1 / 1.4 / 0.5 / 0.5 / 0.3 / 0.2; mid leg: 1 / 1.2 / 0.1 / 0.07 / 0.05 / 0.1; hind leg: 1 / 1.2 / 0.1 / 0.05 / 0.05 / 0.15. Fore claws similar, paddle-shaped, mid- and hind claws dissimilar, one paddle-like and one hooked. Hindwing with rounded costal process approximately in the middle of the wing; vein Sc long and well separated from the costal vein, reaching the costal margin almost at the tip of the wing (Fig. 20 C View Figure 20 ).

Abdomen. Tergites and sternites medium brown, posterior margin of each segment dark brown. Styliger plate medium brown, dark brown along the margins, gonopods broken. Posterior margin of the styliger plate straight and clearly protruding in the middle, median incision U-shaped (Fig. 20 D View Figure 20 ). Penis lobes rounded and tight together, ventral spine long, thin and straight, almost reaching the base of the styliger plate. Cerci and terminal filament broken.

Female imago. Size: body length: 6.5–7.0 mm; forewing length: 7.0– 7.5 mm. Forewing transparent, slightly tinted in brown in subcostal field; longitudinal and transversal veins dark brown; pterostigmatic area with ca. 10 oblique and simple transversal veins. MA and MP forks asymmetrical, cubital field with two long and two short intercalary veins (Fig. 20 A View Figure 20 ). Hindwing with rounded costal process approximately in the middle of the wing; vein Sc long and close to the costal vein, reaching the costal margin before the tip of the wing (Fig. 20 B View Figure 20 ).

Eggs ovoid, ca. 180–195 µm × 80–100 µm, with longitudinal ribs non-punctuated, long and entire, most of them running from one pole to the other (Fig. 21 A View Figure 21 ). Ribs relatively broad, ca. 4.5–5.0 µm in width. In some specimens, chorion folded. Micropyle in equatorial area (Fig. 21 B View Figure 21 ).