Aleiodes ryrholmi
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Ordo: Hymenoptera
Familia: Braconidae
Genus: Aleiodes
Name
Aleiodes ryrholmi van Achterberg & Shaw, 2016 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype, ♀ (NMS, Edinburgh), “Sweden: Hr., Sveg, Duvberg, 16.vii.–12.viii.2004, N. Ryrholm, NMSZ 2004.167”, “MRS Aleiodes DNA 395”.
Molecular data
MRS395 (Sweden JF962792, CO1).
Biology
Unknown.
Diagnosis
Antennal segments of ♀ about 40, of ♂ unknown; head strongly directly narrowed behind eyes (Fig. 324); OOL 0.6 × diameter of posterior ocellus; length of malar space of ♀ 0.35 × height of eye in lateral view (Fig. 325); palpi mainly dark brown; face superficially rugulose (Fig. 323); occipital carina interrupted dorsally and complete ventrally (Figs 324–325); eye about 4.5 × as long as temple in dorsal view (Fig. 324); face black; POL 0.6 × as wide as diameter of posterior ocellus (Fig. 324); mesoscutum entirely black (Fig. 319); medio-posterior depression of metanotum rather narrow (Fig. 319); mesosternum and precoxal sulcus superficially granulate and with satin sheen; vein 2-CU1 of fore wing about twice vein 1-CU1 (Fig. 317); vein cu-a of fore wing inclivous; vein 1-SR narrow and linearly connected to vein 1-M and vein 1-M straight (Fig. 317); hind femur stout (Fig. 321); pale area of second metasomal tergite narrow (Fig. 320); fourth tergite largely (superficially) coriaceous and shiny; length of fore wing about 4.5 mm. Very similar to Aleiodes cantherius (Lyle), but the new species has a much darker body, larger ocelli and superficially sculptured face.
Description
Holotype, ♀, length of fore wing 4.4 mm, of body 4.9 mm.
Head. Antennal segments 40, length of antenna 1.2 × fore wing, basal segments rather robust (Fig. 326), its subapical segments about 2.3 × as long as wide (Fig. 327) and scapus in lateral view oblique apically; frons granulate and rather shiny; OOL and POL 0.6 and 0.6 × diameter of posterior ocellus, respectively, and granulate; vertex coriaceous, with satin sheen; clypeus rather high, convex, coriaceous, 0.4 × as wide as face; ventral margin of clypeus thick (Fig. 325); width of hypoclypeal depression 0.35 × minimum width of face (Fig. 323) and face mainly granulate, dorsally superficially rugulose; length of eye 4.5 × temple in dorsal view and temple directly narrowed behind eye; occiput behind stemmaticum mainly granulate-coriaceous and occipital carina widely interrupted medio-dorsally and nearly complete ventrally (Fig. 325); clypeus above lower level of eyes (Fig. 323); length of malar space 0.35 × height of eye in lateral view; eyes protuberant (Figs 323–325).
Mesosoma. Mesoscutal lobes very finely granulate-coriaceous, with satin sheen, but medio-posteriorly rugulose; notauli narrow, shallow and anterior half largely smooth; prepectal carina narrow lamelliform medio-ventrally, nearly reaching anterior border of mesopleuron and latero-ventrally curved; precoxal area of mesopleuron granulate and shiny; mesopleuron above precoxal area (except large smooth and shiny speculum) superficially granulate, but dorsally rugose; medially metapleuron nearly smooth, superficially granulate, shiny; mesosternal sulcus narrow and rather deep, smooth, without carina posteriorly; mesosternum rather angulate posteriorly; scutellum finely coriaceous and non-carinate laterally; lunula (= smooth lateral part of scutellum) wide medially; medio-posterior depression of metanotum rather narrow (Fig. 319); dorsal face of propodeum medium-sized, convex and coriaceous, but posteriorly with some carinae and smooth in between, without tubercles, median carina complete.
Wings. Fore wing: r 0.55 × 3-SR (Fig. 317); 1-CU1 horizontal and slender, 0.55 × as long as 2-CU1; r-m 0.8 × 2-SR, and 0.5 × 3-SR; second submarginal cell elongate (Fig. 317); 1-SR slightly angled to 1-M and slender; cu-a inclivous, subparallel with CU1b, straight; 1-M slightly curved. Hind wing: apical half of marginal cell parallel-sided or nearly so (Fig. 317); 2-SC+R longitudinal; m-cu present as weakly pigmented fold; M+CU:1-M = 10:7; 1r-m 0.7 × 1-M.
Legs. Tarsal claws yellowish setose; hind coxa superficially finely coriaceous, rather shiny; hind trochantellus 2.2 × longer ventrally than wide; length of fore and hind femora 5.2 and 3.9 × their width, respectively (Figs 321–322); inner apex of hind tibia without distinct comb; length of inner hind spur 0.4 × hind basitarsus.
Metasoma. First tergite as long as wide posteriorly, flattened and latero-anteriorly lamelliform near dorsope; first–second tergites and base of third tergite mainly coriaceous with superficial rugulosity, and with median carina weakly developed on apical half of first tergite and middle of second tergite; second tergite 0.9 × longer than wide basally and 1.3 × as long as third tergite (Fig. 320); medio-basal area of second tergite minute; second suture rather deep and distinctly crenulate; remainder of metasoma largely smooth and shiny; fourth tergite without sharp lateral crease; ovipositor sheath largely densely setose and apically truncate.
Colour. Black; antenna, palpi, basal two-thirds of third tergite, apices of femora, bases of tibiae and hind coxa dark brown; pronotum postero-dorsally, trochanters, trochantelli and tegulae pale yellowish; fore and middle coxae, remainder of tibiae and tarsi brown; orbita (except ventrally and sides of face), femora (except apically), first tergite medio-apically, second tergite narrowly medially, apical third of third and following tergites mainly orange brown (Fig. 320); pterostigma and veins dark brown; wing membrane slightly infuscate.
Etymology
This species from Sweden is named after the collector of the type specimen, Swedish lepidopterist Nils Ryrholm, whose generous donations of Swedish parasitic wasps to the NMS collection have enriched it greatly.
Distribution
- Sweden.
Original Description
- van Achterberg, C; Shaw, M; 2016: Revision of the western Palaearctic species of Aleiodes Wesmael (Hymenoptera, Braconidae, Rogadinae). Part 1: Introduction, key to species groups, outlying distinctive species, and revisionary notes on some further species ZooKeys, (639): 1-164. doi
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