Utetes Foerster, 1863

Tan, Jiang-Li, Achterberg, Cornelis Van, Zhang, Ruo-Nan & Wu, Jia-Xuan, 2018, Five new species of Utetes Foerster (Hymenoptera, Braconidae, Opiinae) from NW China, Zootaxa 4402 (3), pp. 525-541 : 526-527

Key to species of Utetes Foerster sensu stricto from NW China

1 Wing membrane brown; length of body (♂) about 5 mm; vein m-cu of hind wing present; [propodeum with a transverse carina and reticulate; medio-posterior depression of mesoscutum large and deep; hind femur 3.5 × as long as wide; first metasomal tergite 1.4 × as long as wide apically]........................................... U. breviculus Chen & Weng, 2005

– Wing membrane subhyaline, at most fore wing medially weakly infuscate; length of body 2.5–3.5 mm; vein m-cu of hind wing absent; [hind leg (except telotarsus) ivory, pale yellow and/or yellow]............................................ 2

2 Mesoscutum rounded anteriorly, without distinct “shoulders” ( Figs 4 , 43 ); malar space 0.5–0.7 × as long as basal width of mandible and with malar suture distinctly to slightly impressed; vein 1-SR of fore wing 0.4–0.5 × vein 1-M; setose part of ovi-

positor sheath 0.2–0.3 × hind tibia; [hind femur 3.9–4.5 × as long as wide; medio–posterior depression of mesoscutum shallower and more or less droplet-shaped].................................................................... 3 – Mesoscutum with sharply protruding “shoulders” ( Figs 17 , 30 , 53, 54 ); malar space 0.8 × as long as basal width of mandible and flat; vein 1-SR of fore wing 0.6–0.7 × vein 1-M; setose part of ovipositor sheath 0.3–0.8 × hind tibia; [wing membrane subhyaline except near submedial veins; orbita partly orange or chestnut brown]................................... 4

3 Flat and smooth lateral areas of first metasomal tergite wide, about as wide as sculptured medial part ( Fig. 5 ); apex of metasoma (including hypopygium) dark brown; face 1.6–1.8 × as wide as high medially ( Fig. 9 ); precoxal sulcus coarsely crenulate ( Fig. 3 ); ovipositor rather slender ( Fig. 12 ).................................................... U. aharmus sp. n.

– Flat and smooth lateral areas of first metasomal tergite narrow, distinctly narrower than sculptured medial part ( Figs 43, 44 ); apex of metasoma (including hypopygium) brownish yellow ( Fig. 48 ); face about twice as wide as high medially (measured from ventral rim of antennal sockets; Fig. 46 ); precoxal sulcus finely crenulate ( Fig. 42 ); ovipositor robust ( Fig. 48 )............................................................................................... U. stenotus sp. n.

4 “Shoulders” in front of notauli less protuberant ( Fig. 30 ); first discal cell of fore wing strongly transverse (its maximum width about 3 × its height medially: Fig. 28 ); setose part of ovipositor sheath 0.8 × as long as hind tibia; precoxal sulcus largely absent and with only a few crenulae ( Fig. 29 ); medio-posterior depression of mesoscutum shorter and more or less elongate droplet-shaped ( Fig. 30 ).................................................................... U. karsius sp. n.

– “Shoulders” in front of notauli more protuberant ( Figs 17 , 54 ); first discal cell of fore wing less transverse (its maximum width about twice its height medially: Figs 15 , 52 ); setose part of ovipositor sheath 0.3–0.6 × as long as hind tibia; precoxal sulcus wide and distinctly crenulate ( Figs 16 , 53 ); medio-posterior depression of mesoscutum long and linear ( Figs 17 , 54 )....... 5

5 Setose part of ovipositor sheath 0.3 × as long as hind tibia ( Fig. 61 ); scutellum densely setose posteriorly ( Fig. 54 ); propodeum with short medio-longitudinal carina anteriorly ( Fig. 55 ); precoxal sulcus somewhat wider end pointing posteriorly close to middle coxa ( Fig. 53 ); ♀ with about 38 antennomeres........................................... U. subrosae sp. n.

– Setose part of ovipositor sheath 0.6 × as long as hind tibia ( Fig. 24 ); scutellum sparsely setose posteriorly ( Fig. 17 ); propodeum without short medio–longitudinal carina anteriorly ( Fig. 18 ); precoxal sulcus more elongate and pointing to area in front of middle coxa ( Fig. 16 ); ♀ with about 43 antennomeres........................................ U. elongisulcus sp. n.

Figures

FIGURES 2–13. Utetes aharmus Tan & van Achterberg, sp. n., ♀, holotype. 2—wings. 3—mesosoma, lateral aspect. 4— mesosoma, dorsal aspect. 5—propodeum and first—third metasomal segments, dorsal aspect. 6—antenna. 7— basal antennomeresof antenna.8—apical antennomeresof antenna.9—head, anterior aspect.10—head, dorsal aspect.11—hind leg, lateral aspect.12—hind tibia, mesal aspect, arrow points to basal carinula.13—mandible, latero—ventral aspect.

FIGURES41–50.Utetes stenotus Tan & van Achterberg, sp.n., ♀, holotype.41—wings.42—mesosoma, lateral aspect. 43— mesosoma, dorsalaspect.44—propodeumand metasoma, dorsalaspect.45—basalantennomeres and head, lateral aspect.46— head, anterior aspect.47—head, dorsal aspect.48—metasoma and hind leg, lateral aspect.49—apex of hind femur and base of tibia, mesal (= inner) aspect, showing basal carinula of tibia. 50—mandible, anterior aspect.

FIGURES15–26.Utetes elongisulcusTan & van Achterberg, sp. n., ♀, holotype.15—wings.16—head and mesosoma,lateral aspect. 17—mesosoma,dorsal aspect.18—propodeum and first–fourth metasomalsegments, dorsal aspect.19—antenna.20— basal antennomeres of antenna. 21—apical antennomeres of antenna. 22—head, anterior aspect.23—head, dorsal aspect. 24— hind leg, lateral aspect.25—hind tibia, mesal aspect, arrow points to basal carinula. 26—mandible, latero–ventral aspect.

FIGURES 28–39. Utetes karsius Tan & van Achterberg, sp. n., ♀, holotype. 28—wings. 29—head and mesosoma, lateral aspect. 30—mesosoma, dorsal aspect. 31—propodeum and first–fourth metasomal segments, dorsal aspect. 32—basal antennomeres of antenna. 33—antenna. 34—apical antennomeres of antenna. 35—head, anterior aspect. 36—head, dorsal aspect. 37—hind leg, lateral aspect. 38—hind tibia, mesal aspect, arrow points to basal carinula. 39—mandible, latero–ventral aspect.

FIGURES52–63.Utetes subrosae Tan &vanAchterberg, sp. n., ♀, holotype.52—wings.53—mesosoma, lateral aspect.54— mesosoma, dorsal aspect. 55—propodeum and first–third metasomal segments, dorsal aspect. 56—antenna. 57—basal antennomeres of antenna. 58—apical antennomeres of antenna. 59—head, anterior aspect. 60—head, dorsal aspect. 61—hind leg, lateral aspect. 62—hind tibia, mesal aspect,arrow points to basal carinula. 63—mandible, latero–ventral aspect.