Ichneumon LINNAEUS
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publication ID |
https://doi.org/ 10.5281/zenodo.10414707 |
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persistent identifier |
https://treatment.plazi.org/id/B35D87BA-FFD3-FF81-FEA2-FB34EF0DA30D |
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treatment provided by |
Felipe |
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scientific name |
Ichneumon LINNAEUS |
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Key to the ♀♀ of Ichneumon LINNAEUS View in CoL from the Oriental region
(except I. latimodjonis HEINRICH and I. silvicola HEINRICH from Sulawesi):
1 Body including legs black; only scutellum, narrow median stripes on 7 th or 6 th to 7 th tergites and upper margin of pronotum ivory. Flagellum short, filiform. Body length 15 mm. Myanmar........................................................................ I. chasmiops HEINRICH, 1965 View in CoL
- Body with extended ivory color pattern or metasoma ± red................................................2
2 Large species, body length> 20 mm. Black; mesosoma, metasoma and legs with extended ivory coloration. Metasoma without red tergites. ................................................3
- Smaller species, body length at most 16 mm. Metasoma often with red tergites. ...............4
3 Very large, body length 30 mm. Mesoscutum with two paramedian ivory stripes. All tergites with posterolateral ivory spots. Prescutellar carina black. Laos. .............................. ............................................................................................................... I. giganteus nov.sp.
- Large, body length 22-24 mm. Mesoscutum with central ivory spot. 2 nd to 5 th tergites with posterolateral ivory spots, 5 th to 7 th tergites with median ivory spots. Prescutellar carina ivory. Myanmar. .......................................................... I. leucogigas HEINRICH, 1965 View in CoL
4 Hypostomal carina lamelliform widened. 1 st to 3 rd tergites with yellow apical bands. 1 st and 5 th to 7 th tergites red, apical tergites without ivory median spots. Legs entirely red. Body length 11 mm. Nepal............................................................ I. cavigena RIEDEL, 2019
- Hypostomal carina not distinctly wider than genal carina. Coloration of metasoma different, usually apical tergites with distinct yellow or ivory median spots.......................5
5 Postpetiolus and 2 nd to 4 th tergites black, with posterolateral ivory spots. Body length 15-16 mm. ...........................................................................................................................6
- Metasoma ± red. Coxae often without ivory spots. Body usually smaller...........................7
6 Mesoscutum entirely red. 5 th to 7 th tergites with median ivory spots. Tibae black, without subbasal ivory rings. Hind coxa densely punctate, with a very finely granulated area ventrally but without scopa. Body length 15 mm. Southern China................................. ........................................................................................................ I. yunnanensis nov.sp.
- Mesoscutum black, with two paramedian ivory stripes. 5 th to 7 th tergites with lateral ivory spots. All tibiae with ivory subbasal rings. Hind coxa with very fine dense punctures ventrally, but without scopa. Body length 16 mm. India: Himalaya ..................... ............................. I. heinrichi GUPTA, 1987 View in CoL (syn. I. himalaynus HEINRICH, 1974 praeocc.)
7 All tergites red, 2 nd to 4 th tergites with black basal bands. Flagellum filiform. Scutellum ivory or yellow. ...................................................................................................................8
- All tergites or at least 2 nd and 3 rd tergites red, 2 nd tergite without black basal band. .........13
8 2 nd and 3 rd tergites with diffuse yellow posterolateral spots, 6 th and 7 th tergites with yellow median spots. Flagellum red basally, black distally, without ivory ring (yellowish centrally in I. tricoloratus). Hind coxa with sparse punctures ventrally. ...........9
- 2 nd and 3 rd tergites without yellow posterolateral spots. Flagellum with distinct ivory ring. ...................................................................................................................................11
9 Larger, body length 11 mm. Flagellum with 38 flagellomeres. Postpetiolus and 4 th tergite without yellow bands or spots. Postscutellum and frontal orbit reddish. Hind coxa with weak scopa. Flagellum two-coloured. Himalayan region of India. ........................ ...................................................................................... I. americanicolor HEINRICH, 1965 View in CoL
- Smaller, body length 9 mm. Flagellum with 35 flagellomeres. Postscutellum, apical band on postpetiolus and posterolateral spots on 2 nd to 4 th tergites yellow. Hind coxa without scopa ....................................................................................................................10
10 All tibiae with subbasal yellow rings. Petiolus entirely red. Frontal orbit black. Flagellum two-coloured. Northern India. ............................................ I. sikkimensis nov.sp.
- Tibiae without subbasal yellow rings. Petiolus black basally. Frontal orbits with yellow stripe. Flagellum tricoloured: red basally, yellowish medially and black distally. Nepal...... ................................................................................................. I. tricoloratus RIEDEL, 2019
11 Dorsal mandibular tooth long and thick, ventral tooth only indicated by a small rim at lower side of dorsal tooth. Yellow median spots on apical tergites weak. Flagellum tricoloured: basal flagellomeres red, central flagellomeres with ivory rings, distal flagellomeres black. Hind coxa ventrally with dense punctures. Mesoscutum completely red. Body length 10-12 mm. Widespread in the Oriental region. ....................... .......................................................................................... I. rhododendron HEINRICH, 1965 View in CoL
- Mandible unmodified, dorsal tooth pointed, ventral tooth smaller but distinct. 6 th and 7 th tergites with distinct ivory spots medially. Flagellum black, with central ivory ring. ..12
12 Hind coxa mainly smooth ventrally, with few very sparse punctures. Malar space about as long as width of mandibular base. Median field of mesoscutum black. Body length 11 mm. Myanmar. ...................................................................... I. malaisei HEINRICH, 1965 View in CoL
- Hind coxa densely punctate ventrally and with small but distinct scopa. Malar space 1.4 × as long as width of mandibular base. Mesoscutum red. Body length 11 mm. Southern China........................................................................................ I. scopator nov.sp.
13 Postpetiolus with ivory apical band, 2 nd and 3 rd tergites with posterolateral ivory spots. Propodeum with ivory lateral spot. Mesosoma dark reddish-brown, apical tergites with median ivory spots. ...........................................................................................................14
- Postpetiolus, 2 nd and 3 rd tergites without ivory spots. Mesosoma partly or completely black. Metasoma often tri-coloured, 5 th to 7 th tergites with median ivory spots. ...............15
14 Legs reddish-brown. Mesoscutum with two paramedian longitudinal ivory stripes. 5 th to 7 th tergites with median ivory spots. Metasoma semi-amblypygous: hypopygium moderately elongate. Body length 13 mm. Myanmar............. I. obtusicauda HEINRICH, 1965 View in CoL
- All tibiae with subbasal yellowish or ivory rings. Mesoscutum without paramedian ivory stripes. 6 th and 7 th tergites with ivory median spots, 5 th tergite black. Metasoma oxypygous: hypopygium short. Body length 12 mm. Myanmar and Himalayan region. ....... ............................................................................................. I. annaelisae HEINRICH, 1965 View in CoL
15 Legs including coxae and trochanters reddish. Postpetiolus with wide yellow apical band, 2 nd tergite red; 3 rd tergite black in absal half, reddish-yellow apically. Apical tergites yellowish. Mesosoma black. Body length 13 mm. Southern India..... I. ardates CAMERON, 1897 View in CoL
- At least coxae ± black. Basal tergites of different coloration. ...........................................16
16 All tergites red, 6 th and 7 th tergites with ivory or yellow median spots. Mesoscutum and head mainly red. ................................................................................................................17
- Only 2 nd and 3 rd tergites red; apical tergites black, with or without ivory spots. ...............18
17 2 nd and 3 rd tergites smooth and shining, with exceptionally sparse and fine punctures. Body length 12.5 mm. Nepal................................................... I. politoventris RIEDEL, 2019
- 2 nd and 3 rd tergites densely and coarsely rugose-punctate, ± dull. Body length 14-15 mm. Nepal............................................................................... I. ruficephalus RIEDEL, 2019
18 Flagellum slender and bristle-shaped; 1 st flagellomere more than 4 × longer than wide. Black; face, clypeus and gena red. Postpetiolus ± red. Small, body length 8 mm. Myanmar. ............................................................................ I. graciliformis HEINRICH, 1965 View in CoL
- Flagellum stouter, 1 st flagellomere 2-3 × longer than wide. Larger, body length 12- 16 mm. 2 nd and 3 rd tergites red, 1 st tergite black. ...............................................................19
19 6 th and 7 th tergites without ivory spots, at most 7 th tergite with median reddish spot. .......20
- 6 th and 7 th tergites with distinct ivory median spots. .........................................................21
20 Malar space 1.6 × as long as width of mandibular base. Juxtacoxal carina absent. Scape, pedicel and flagellomeres 1-8 red. 2 nd and 3 rd tergites completely red. 7 th tergite with weak reddish median spot. Hind tibia apically and hind tarsus completely black. Body length 12 mm. Nepal...................................................... I. longigenalis RIEDEL, 2019
- Malar space 1.2 × longer than width of mandibular base. Juxtacoxal carina present. Basal flagellomeres black. 2 nd tergite completely and 3 rd tergite laterally red. 7 th tergite black. Hind tibia and tarsus red. Body length 12.5 mm. Nepal....... I. creutzburgi RIEDEL, 2019
21 Head black, only frons and vertical orbit, gena apically and lateral part of face reddish. Flagellum bristle-shaped, with 42 flagellomeres. Area superomedia almost square. 2 nd and 3 rd tergites completely red. Mesoscutum completely black. Body length 16 mm. Myanmar. ............................................................................... I. indosessor HEINRICH, 1965 View in CoL
- Head red; only stemmaticum, median frons and antennal grooves black. Flagellum usually filiform, with at most 37 flagellomeres. Area superomedia longer than wide.......22
22 Very small, body length 6.5 mm. Flagellum with 31 flagellomeres. Head coarsely rugose-punctate. Hind coxa densely punctate, without scopa. Area superomedia slightly longer than wide. Southern China. ............................................... I. brevitemporalis nov.sp.
- Larger, body length 12-13 mm. Flagellum with 36-37 flagellomeres. Area superomedia distinctly longer than wide. ...............................................................................................23
23 3 rd tergite red with black basal band, 5 th to 7 th tergites with ivory spots. Hind coxa without scopa. Body length 12 mm. Myanmar.......................... I. ruficaput HEINRICH, 1965 View in CoL
- 2 nd and 3 rd tergites completely red, only 6 th and 7 th tergites with ivory spots. Hind coxa with strong scopa. Body length 12.5 mm. Nepal................................. I. nepalensis RIEDEL, 2019
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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