Lamachus

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Taxonavigation

Ordo: Hymenoptera
Familia: Ichneumonidae

Name

Lamachus Förster, 1869 – Wikispecies link – Pensoft Profile

• Lamachus Förster, 1869. Verhandlungen des Naturhistorischen Vereins der Preussischen Rheinlande und Westfalens, 25(1868): 206. Type species: Tryphon lophyrum Hartig.

Diagnosis

Clypeus small, almost flat or weakly convex. Upper tooth of mandible slightly longer than or equal to lower tooth. Notaulus absent, or short and weak. Propodeal carinae weak or absent. Areolet present. Fore wing with vein 1cu-a distal of 1/M by about 0.25 times length of 1cu-a. Hind wing vein 1-cu longer than cu-a. Glymma present. Median dorsal carina of first tergum weak; dorsolateral carina complete. Setae of female genital plate slanted backward.

Key to species of Lamachus known in China

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

1		Median longitudinal carina of propodeum distinct. Median dorsal carina of first tergum distinct. Upper tooth of mandible as long as lower tooth    Lamachus gilpiniae Uchida
–		Median longitudinal carina of propodeum absent (Figs 4, 11). Median dorsal carina of first tergum incomplete or absent. Upper tooth of mandible slightly longer than lower tooth    2
2		Third to fifth terga red (Fig. 7). First tergum 2.5 times as long as apical width. Second tergum 0.8 times as long as apical width (Fig. 12). Antenna with 46–48 flagellomeres    Lamachus rufiabdominalis Li, Sheng & Sun, sp. n.
–		All terga black. First tergum 1.4 or 2.1 times as long as apical width. Second tergum 0.6 or 1.1 times as long as apical width. Antenna with 38(39) to 40 flagellomeres    3
3		First tergum 2.1 times as long as apical width, median dorsal carina absent. Second tergum 1.1 times as long as apical width. Scutellum and postscutellum black. Basal 0.7 of hind tibia white    Lamachus sheni Sheng & Sun
–		First tergum 1.4 times as long as apical width, basal portion of median dorsal carina present. Second tergum 0.6 times as long as apical width (Fig. 6). Lateral and apical portions of scutellum and entire postscutellum yellow. Hind tibia black    Lamachus nigrus Li, Sheng & Sun, sp. n.

Taxon Treatment

• Li, T; Sheng, M; Sun, S; 2012: Species of the genus Lamachus Förster (Hymenoptera, Ichneumonidae) parasitizing diprionid sawflies (Hymenoptera, Diprionidae) with descriptions of two new species and a key to Chinese species ZooKeys, 249: 37-49. doi

Images

Figures 1–6. Lamachus nigrus Li, Sheng & Sun, sp. n. Holotype. Female 1 Body, lateral view 2 Head, anterior view 3 Head, dorsal view 4 Propodeum 5 Mesopleuron 6 Terga 2 to 3, dorsal view.  Figures 7–12. Lamachus rufiabdominalis Li, Sheng & Sun, sp. n. Holotype. Female 7 Body, lateral view 8 Head, anterior view 9 Head, dorsal view 10 Mesopleuron 11 Propodeum 12 Terga 2 to 3, dorsal view.  Figures 13–15. Lamachus rufiabdominalis Li, Sheng & Sun, sp. n. 13 Larva 14,15 Pupa.