Aptesis

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Taxonavigation

Ordo: Hymenoptera
Familia: Ichneumonidae

Name

Aptesis Förster, 1850 – Wikispecies link – Pensoft Profile

• Aptesis Förster 1850. Archiv für Naturgeschichte. 16(1): 71. Type species: Ichneumon sudeticus Gravenhorst, 1815. Designated by Viereck 1914.

Diagnosis

Clypeus weakly to rather strongly convex in lateral review, apex truncate or broadly and gently convex, sometimes faintly concave and sometimes with a median tooth.Mandible of moderate length, its lower tooth the same size as upper tooth or sometimes slightly smaller, rarely slightly larger. Tyloids linear to elliptic or subcircular, on about 5 segments, beginning on flagellomeres 9, 10, or 11. Epomia absent or rudimentary. Mesoscutum rather weakly convex. Notaulus vestigial or reaching as much as 0.3 of distance to scutellum. Sternaulus distinct over more than 0.5 of mesopleuron, its end pointing to lower hind corner of mesopleuron. Juxtacoxal carina complete and strong. Propodeum of moderate length to short, with or without weak apophyses. Costula usually present in males, usually incomplete or absent in females, but sometimes absent in males and sometimes complete and strong in females. Propodeal spiracle circular or short elliptic. Areolet pentagonal, moderate size. Median dorsal carinae of first tergum usually weak and reaching about to the spiracle, rarely longer and stronger. Dorsolateral part of postpetiole usually carinate between spiracle and apex, or rarely rounded. Ovipositor sheath about 0.35 times as long as fore wing. Ovipositor straight, tip usually elongate sagittate but sometimes shorter, teeth on lower valve weak, oblique, separated into a basal and an apical series (Townes 1970).

Key to species of Aptesis known in China

Key to species of Aptesis known in China — T. Li , M. Sheng , S. Sun

1		Vein 2rs-m parallel or almost parallel with vein 3rs-m (Figs 31, 34)    2
–		Vein 2rs-m obviously anteriorly convergent with vein 3rs-m (Figs 9, 18)    3
2		Face approximately 2.8 times as wide as long. Mandible teeth of equal length. Postocellar line about 1.3 times as long as ocular-ocellar line. Ovipositor sheath about 0.6 times as long as hind tibia. Metasoma black (Fig. 34)    Aptesis grandis Sheng
–		Face approximately 2.0 to 2.1 times as wide as long (Fig. 24). Upper tooth slightly longer than lower tooth. Postocellar line about 1.5 times as long as ocular-ocellar line. Ovipositor sheath about 0.7 times as long as hind tibia. Apical portion of first and second to third terga entirely reddish brown (Fig. 30)    Aptesis nigricoxa Li & Sheng, sp. n.
3		Face and frons black (Fig. 11)    4
–		Inner orbits of frons with yellowish white flecks, inner orbits of face with or without yellowish white flecks (Fig. 4)    5
4		Malar space about 1.4 times as long as basal width of mandible. Postocellar line about 1.4 times as long as ocular-ocellar line (Fig. 13). First tergum about 1.3 times as long as apical width. Basal portion of hind tibia dark reddish brown (Fig. 10)    Aptesis melana Li & Sheng, sp. n.
–		Malar space about 0.9 times as long as basal width of mandible. Postocellar line about equal with ocular-ocellar line. First tergum about 1.7 times as long as apical width. Basal portion of hind tibia white (Fig. 32)    Aptesis albibasalis (Uchida)
5		Face approximately 1.7 times as wide as long (Fig. 2). Vein 2-Cu approximately 2.3 times as long as 2cu-a. Hind wing vein 1-cu about 4.0 times as long as cu-a (Fig. 9). First tergum about 1.5 times as long as apical width    Aptesis elongata Li & Sheng, sp. n.
–		Face approximately 2.0 times as wide as long. Vein 2-Cu approximately 1.5 times as long as 2cu-a. Hind wing vein 1-cu about 1.5 times as long as cu-a. First tergum about 1.2 times as long as apical width    Aptesis corniculata Sheng

Taxon Treatment

• Li, T; Sheng, M; Sun, S; 2013: Chinese species of the genus Aptesis Förster (Hymenoptera, Ichneumonidae) parasitizing sawflies, with descriptions of three new species and a key to species ZooKeys, 290: 55-73. doi

Images

Figures 1–9. Aptesis elongata Li & Sheng, sp. n. Holotype. Female. 1 Body, lateral view 2 Head, anterior view 3 Head, lateral view 4 Head, dorsal view 5 Mesoscutum 6 Mesopleuron 7 Propodeum 8 Terga 2 to 3, dorsal view 9 Fore wing.  Figures 10–18. Aptesis melana Li & Sheng, sp. n. Holotype. Female. 10 Body, lateral view 11 Head, anterior view 12 Head, lateral view 13 Head, dorsal view 14 Mesoscutum 15 Mesopleuron 16 Propodeum 17 Metasoma, dorsal view 18 Fore wing.  Figures 23–31. Aptesis nigricoxa Li & Sheng, sp. n. Holotype. Female. 23 Body, lateral view 24 Head, anterior view 25 Head, lateral view 26 Head, dorsal view 27 Mesoscutum 28 Mesopleuron 29 Propodeum 30 Metasoma, dorsal view 31 Fore wing.  Figure 32. Aptesis albibasalis (Uchida, 1930). Female. Body, lateral view.  Figure 34. Aptesis grandis Sheng, 1998. Female. Body, lateral view.