Stenarella saaksjarvi, Santos & Bordera, 2025

3.1.15. Stenarella saaksjarvi sp. nov.

Figures 1 I View Figure 1 , 18 View Figure 18 , 25 A View Figure 25 , 28 View Figure 28

Etymology.

Named after hymenopterist Ilari Sääksjärvi ( ZMUT), as homage to his distinguished entomological career with significant contributions to the systematics and ecology of Ichneumonidae . Noun in genitive case.

Diagnosis.

Stenarella saaksjarvi sp. nov. can be distinguished from all other Stenarella species by the combination of the following characters: pronotum longitudinally and coarsely striated (Fig. 18 B – D View Figure 18 ); mesoscutum mostly smooth and shiny (Fig. 18 E View Figure 18 ); posterior area of propodeum transversely striate, striae regularly separated and reaching pleural sulcus (Fig. 1 I View Figure 1 ); face (except orbits) and ventral part of genal orbit black (Fig. 18 B – D, G View Figure 18 ); mesosoma mostly black or black and orange (Fig. 18 A – E View Figure 18 ); fore coxae dark brown or black with white dorsal and distal longitudinal whitish stripe (Fig. 18 B – D View Figure 18 ).

Description.

FEMALE. Fore wing 5.8–11.3 mm long. — Head (Fig. 18 A – E, G View Figure 18 ): Mandible moderately covered with very long setae. Clypeus and face sparsely setose. Mandible punctate at base, MLW 2.10–2.35. Malar space short, MSM 0.30–035. Clypeus sparsely punctate, CWL 2.75–2.80. Clypeus and face centrally mostly flat. Face centrally slightly rugulose, elsewhere smooth. Frons sparsely punctate, with interrupted longitudinal carina. Vertex mostly smooth and shiny with sparse punctures. Antenna with 30–36 flagellomeres. — Mesosoma (Figs 1 I View Figure 1 , 18 A – F View Figure 18 ): Pronotum covered by uniform longitudinal striae, the striae fading dorsally leaving small dorsal smooth area. Epomia weak, reaching pronotal depression. Mesoscutum almost entirely smooth and shiny, except for distinct set of longitudinal striae between posterior end of notauli. Notaulus narrow and deep with minute dense transverse striae, reaching 0.75 of mesoscutum. Scutellum weakly rugulose punctate dorsally. Mesopleuron and metapleuron densely setose. Mesopleuron dorsally rugulose – striate, ventrally finely rugulose. Epicnemial carina distinct, reaching 0.9 of distance to subtegular ridge. Sternaulus shallow and wide, sinuous, reaching posterior rim of mesopleuron. Metapleuron finely strigose. Propodeum relatively long, dorsal profile in lateral view evenly convex and sloped. Anterior area of propodeum finely transversely strigose. Propodeal spiracle elliptic, SLW 2.5–2.75. Posterior area of propodeum covered by more or less uniformly spaced transverse striae. Posterior transverse carina of propodeum absent. Areolet small, closed distally by an unpigmented vein 3 rs-m, APH 0.40–0.45. Vein 2 m-cu antefurcal to vein 3 rs-m. Hind wing vein Cua distinctly longer than crossvein cu-a, HW 1 C 2.20–2.35. — Metasoma (Fig. 18 A, H View Figure 18 ): Posterior end of S 1 placed distinctly posterior to spiracle of T 1. T 1 LW 2.9–3.35; T 1 WW 2.25–2.3; T 2 LW 1.10–1.45; T 2 WW 2.2–3.1. Thyridium about 3 times as long as wide. T 2 minutely punctate reticulate on a finely granulate background, except for small granulate portion on anterior part. Dorsal valve of ovipositor with 4 teeth. Ventral valve with 10 teeth. OST 4.75–5.15. — Color (Figs 1 I View Figure 1 , 18 View Figure 18 ): Head mostly black: labrum, mandible except apex, clypeus dorsally, facial, frontal and genal orbits dorsally, whitish. Antenna mostly dark brown, f 6 – f 11 (12) dorsally white, Mesosoma mostly orange: propleuron, pronotum mostly, ventral part of epicnemium and mesopleuron, mesosternum, metasternum, metapleuron ventrally, marks on anterior part of median lobe and center of lateral lobes of mesoscutum and dorsal part of propodeum dark brown to black; dorsal rim of pronotum, subtegular ridge and lateral parts of scutellum and posterior dorsal mark on propodeum, whitish. Legs mostly dark brown; mid femur dorsally and most part of hind femur orange; dorsal posterior longitudinal strip on fore tibia and ventral part of fore and mid trochanters, whitish. Wing hyaline. Metasoma mostly black: posterior narrow bands on T 1 – T 2, posterior rim of T 3 slightly and dorsal part of T 6 – T 8 extensively, whitish. — MALE. Unknown.

Hosts.

Unknown.

Distribution.

Afrotropical. Known records from Uganda (Fig. 25 A View Figure 25 ).

Material examined.

6 ♀♀. Holotype. UGANDA • ♀; Kabarole district, Kibale National Park, Fort Portal ; 4–18.VI.2015; T. Hopkins leg. Malaise; ZMUT. 7076 / http://mus.utu.fi/ZMUT.11402 ( ZMUT) . Dry pinned. Distal flagellomeres from f 31 of right antenna, and hind left leg, missing. — Paratypes. UGANDA • 1 ♀; same data as holotype except 16–30.I.2015; K 31 T 3 – 150130 / http://mus.utu.fi/ZMUT.11367 ( ZMUT) • 1 ♀; same data except 23.V–04.VI.2015; K 31 T 4 / http://mus.utu.fi/ZMUT.11392 ZMUT.7534 ( ZMUT) • 1 ♀; same data except 30.I.2015 – 13.II.2015; K 31 T 4, http://mus.utu.fi/ZMUT.11397, ZMUT. 7535 ( ZMUT) • 1 ♀; same data except 28.I.2015; sweeping, http://mus.utu.fi/ZMUT.11395 ( ZMUT) • 1 ♀; same data except Kanywara, Makerere University Biological Field station ; 1484 m; primary mid – alt rainforest near stream; 0°34.405′N 30°21.646′E; 12–26.VIII.2008, S. van Noort leg.; Malaise; UG 08 – KF 10 – M 20 / SAM–HYM–P 051187 ( SAMC) GoogleMaps .