Distictus Townes, 1966, Townes in Townes & Townes, 1966

Supeleto, Fernanda A., Santos, Bernardo F. & Aguiar, Alexandre P., 2019, Revision of Distictus Townes, 1966 (Hymenoptera, Ichneumonidae, Cryptinae), with descriptions of ten new species, European Journal of Taxonomy 542, pp. 1-64: 9-11

publication ID

https://doi.org/10.5852/ejt.2019.542

publication LSID

lsid:zoobank.org:pub:3539B76F-619A-4863-997B-A449BE1BD352

persistent identifier

http://treatment.plazi.org/id/03894A65-5802-FFD2-55DA-B39C286EF820

treatment provided by

Plazi

scientific name

Distictus Townes, 1966
status

 

Keys to species of Distictus Townes, 1966  

Females

1. Metasoma mostly orange ( RGB 226,93,5), reddish (200,52,5) or reddish-brown (175,53,8), T 2–8 mostly without posterior yellow stripes ( Figs 7D View Fig , 9 C View Fig , 14 E View Fig ), at most T 2–3 with incomplete stripe ( Fig. 6D View Fig ) .................................................................................................................................. 2

– Metasoma black (23,5,2) or dark brown (31,11,2), at least T 2–3 with posterior yellow stripes ( Figs 4 C View Fig , 10D View Fig , 11 C View Fig ) .......................................................................................................................... 9

2. Supra-clypeal area entirely pale yellow ( Fig. 13 A, C View Fig ), rarely with blackish marks ( Fig. 15 View Fig A–B); orbital band on malar space complete, rarely ventrally briefly interrupted ( Fig. 15 View Fig A–B) ............... 3

– Supra-clypeal area with blackish or reddish-brown marks ( Figs 7 A View Fig , 9 A View Fig ); orbital band on malar space interrupted ......................................................................................................................................... 4

3. Metapleuron entirely black ( Fig. 15 C View Fig ); mesosternum entirely black; fore and mid coxae pale yellow, without dorso-apical brown spot ( Fig. 15 G View Fig ); central yellow mark on mesopleurum extending to sternaulus ( Fig. 15 G View Fig ); posterior area of propodeum rugulose ( Fig. 15 F View Fig ); anterior margin of propodeum medially distinctly concave ( Fig. 15 F View Fig ) .......................... Distictus tibialis ( Brullé, 1846)  

– Metapleuron with distict yellow mark ( Fig. 13D View Fig ); mesosternum with large yellow marks; fore and mid coxae pale yellow, usually with dorso-apical brown spot ( Fig. 13D View Fig ); central yellow mark on mesopleuron extending beyond sternaulus ( Fig. 13D View Fig ); posterior area of propodeum strigate-rugulose ( Fig. 13 B View Fig ); anterior margin of propodeum medially slightly concave ( Fig. 13 B View Fig ) .............................. ............................................................................................................. Distictus paratibialis   sp. nov.

4. Propodeum with sublateral elongate yellow marks ( Figs 7 C View Fig , 14 B View Fig ); mesosoma black or reddishbrown with distinct yellow marks ( Figs 9 C View Fig , 14 E View Fig ); mesoscutum centrally with yellow spot; wings hyaline; epomia distinct only after diverging from pronotal collar .................................................. 5

– Propodeum without sublateral elongate yellow marks, only with propodeal crests bright yellow ( Fig. 5 B View Fig ); mesosoma almost entirely black, with a few, tiny yellow spots ( Fig. 5 C View Fig ); mesoscutum centrally without yellow spot; wings infuscate ( Fig. 5 C View Fig ); epomia complete ..................................... ..................................................................................................................... Distictus ardens   sp. nov.

5. Orbital band continuous on temple ( Fig. 9 C View Fig ); mesosoma black with yellow marks; malar space blackish; scutelar carina black ( Fig. 12 B View Fig ) ........................................................................................ 6

– Orbital band interrupted on temple ( Fig. 14 E View Fig ); mesosoma reddish-brown with yellow marks; malar space reddish-brown; scutelar carina mostly yellow ( Fig. 14 B View Fig ) ........................................................ .................................................................................................................. Distictus terrosus   sp. nov.

6. Anterior transverse carina of propodeum medially broadly arched forwards ( Figs 6 B View Fig , 9 B View Fig ); sublateral yellow marks of propodeum comma-shaped ( Figs 6 B View Fig , 9 B View Fig ); T 2 with posterior yellow stripe; hind femur blackish and dark brown; epicnemial carina irregular or distinctly sinuous .......................... 7

– Anterior tranverse carina of propodeum medially weakly bent ( Fig. 7 C View Fig ); sublateral yellow marks of propodeum not comma-shaped ( Figs 7 C View Fig , 12 F View Fig ); T 2 without posterior yellow stripe; hind femur mostly reddish or light orange; epicnemial carina more or less uniformly curved .......................... 8

7. Posterior area of propodeum strigate ( Fig. 6 B View Fig ); small yellow marks on collar and mesopleuron ( Fig. 6D View Fig ); T 3 with blackish marks and narrow posterior yellow stripe ( Fig. 6D View Fig ); hind tibia blackish, except base, orange; spiracle of T 1 not prominent; clypeus black, centrally with small yellow spot ( Fig. 6 A View Fig ); thyridium about as wide as long .............................................. Distictus asterios   sp. nov.

– Posterior area of propodeum strigate-rugulose ( Fig. 9 B View Fig ); extensive yellow marks on collar and mesopleuron ( Fig. 9 C View Fig ); T 3 entirely reddish ( Fig. 9 C View Fig ); hind tibia deep yellow, except apical 0.1 blackish; spiracle of T 1 slightly prominent; clypeus almost entirely yellow ( Fig. 9 A View Fig ); thyridium distinctly wider than long ( Fig. 9 B View Fig ) ...................................................... Distictus commatus   sp. nov.

8. Hind femur reddish, apically blackish ( Fig. 7D View Fig ); supra-clypeal area with three blackish marks that are almost connected centrally to form an inverted Y ( Fig. 7 A View Fig ); median tubercle of clypeus large; orbital band widely interrupted on malar space, broadly disconnected at eye margin ( Fig. 7 A View Fig ); spiracle of T 1 not prominent; propodeum sublaterally with small yellow dot basad tranverse carina ( Fig. 7 C View Fig ) ....................................................................................................... Distictus ateles   sp. nov.

– Hind femur fully bright orange ( Fig. 12D View Fig ); supra-clypeal area without three blackish marks that are almost connected centrally to form an inverted Y, only with two oblique blackish marks on ventral 0.3 ( Fig. 12 A View Fig ); median tubercle of clypeus small; orbital band shortly interrupted on malar space, nearly fused at eye margin ( Fig. 12 A View Fig ); spiracle of T 1 slightly prominent; propodeum sublaterally with distinct yellow spot basad tranverse carina ( Fig. 7 C View Fig ) ................................................................. ................................................................................................................. Distictus notabilis   sp. nov.

9. T 4–8 blackish or dark brown, with wide posterior yellow stripes ( Figs 4 C View Fig , 11 C View Fig ); scutellar carina yellow; hind coxa mostly yellow, dorso-apically with large dark brown mark ( Figs 4 C View Fig , 11 C View Fig ); sternaulus moderately deep; epicnemial carina irregular; propleuron yellow; S 2–5 bright or pale yellow ............................................................................................................................................. 10

– T 4–8 blackish, without posterior yellow stripes ( Fig. 10D View Fig ); scutellar carina black; hind coxa black, dorso-basally with large yellow mark ( Fig. 10D View Fig ); sternaulus deeply impressed; epicnemial carina clearly sinuous; propleuron black; S 2–5 brownish, with narrow posterior pale yellow stripes ......... ..................................................................................................................... Distictus daelus   sp. nov.

10. Hind tibia blackish ( Fig. 4 C View Fig ); mesoscutum coriarious, matte and with lateral yellow marks; pale yellow marks on mesosoma ( Fig. 4 View Fig B–C); fore wing vein 3- M distinctly longer than 2- M; metapleuron rugulose; supra-clypeal area pale yellow, centrally with small blackish marks ( Fig. 4 A View Fig ); fore and mid coxa pale yellow, with small dorso-apical brown spots; hind t1–4 whitish ................................ ................................................................................................................. Distictus apaensis   sp. nov. – Hind tibia bright yellow ( Fig. 11 C View Fig ); mesoscutum densely punctate, shiny and without lateral yellow marks ( Fig. 11 View Fig B–C); bright yellow marks on mesosoma; fore wing vein 3- M about as long as 2- M; metapleuron lineate; supra-clypeal area bright yellow, without blackish marks ( Fig. 11 A View Fig ); fore and mid coxa dorsally bright yellow, without dorso-apical brown spots; hind t1–4 bright yellow .......... ..................................................................... Distictus mexicanus Kasparyan & Ruíz-Cancino, 2005  

Males

1. Metasoma mostly orange ( RGB 226,93,5) ( Fig. 15 E View Fig ), reddish (200,52,5) or reddish-brown (175,53,8) ( Fig. 14D View Fig ), rarely one or more of T 2–4 with posterior yellow stripe ( Figs 8D View Fig , 10 F View Fig ); hind tibia entirely yellow, or blackish only at apex .......................................................................................... 2

– Metasoma blackish, all tergites with wide posterior yellow stripe (as in Fig. 11 C View Fig ); hind tibia deep yellow with basal 0.1 blackish .................... Distictus mexicanus Kasparyan & Ruíz-Cancino, 2005  

2. Orbital band continuous on temple ( Fig. 15 E View Fig ); scutellar carina black; mesosoma black or dark brown with extensive yellow marks ( Fig. 10 F View Fig ) ........................................................................................... 3

– Orbital band interrupted on temple ( Fig. 14D View Fig ); scutellar carina almost entirely yellow; mesosoma reddish-brown with extensive yellow marks ( Fig. 14D View Fig ) .................................................................... .................................................................................................................. Distictus terrosus   sp. nov.

3. T 2–3 without posterior yellow stripes, rarely T 2 with posterior yellow stripe ................................ 4 – T 2–3 with posterior yellow stripes ................................................................................................... 6

4. Metapleuron rugulose; propodeum posteriorly rugulose ou strigate-rugulose (as in Fig. 15 F View Fig ); propleuron entirely pale yellow; mid coxae entirely pale yellow; T 1 mostly orange, sometimes blackish; malar space pale yellow .................................................................................................... 5

– Metapleuron lineate; propodeum posteriorly distinctly striate (as in Fig. 7 C View Fig ); propleuron entirely black, sometimes with small posterior yellow spot; mid coxae ventrally blackish; T 1 mostly black; malar space black ......................................................................................... Distictus ateles   sp. nov.

5. Metapleuron fully black ( Fig. 15 E View Fig ), without yellow mark; mesosternum entirely black, rarely with small pale yellow marks; scape dorsally brown, sometimes apically with small yellow spot ........... ..................................................................................................................... Distictus tibialis   sp. nov.

– Metapleuron black with distinct yellow mark (similar to Fig. 13D View Fig ); mesosternum almost or entirely pale yellow; scape dorsally pale yellow, rarely light brown ............................................................... ............................................................................................................. Distictus paratibialis   sp. nov.

6. Anterior transverse carina of propodeum almost straight ( Fig. 8 B View Fig ); T 4 with posterior pale yellow stripe ( Fig. 8 View Fig C–D); pronotum polished smooth along collar ( Fig. 8 C View Fig ); propleuron mostly yellow; sternaulus moderately deep ( Fig. 8 C View Fig ); mesopleuron shiny and weakly striate on dorsal area between hypoepimeron and epicnemial carina ..................................................... Distictus caligaris   sp. nov.

– Anterior transverse carina of propodeum centrally distinctly arched forwards ( Fig. 10 G View Fig ); T 4 without posterior yellow stripe ( Fig. 10 F View Fig ); pronotum distinctly striate along collar; propleuron entirely dark brown; sternaulus deeply impressed (as in Fig. 10D View Fig ); mesopleuron matte and almost entirely lineate .......................................................................................................... Distictus daelus   sp. nov.

T

Tavera, Department of Geology and Geophysics

C

University of Copenhagen

E

Royal Botanic Garden Edinburgh

A

Harvard University - Arnold Arboretum

G

Conservatoire et Jardin botaniques de la Ville de Genève

F

Field Museum of Natural History, Botany Department

B

Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet

Y

Yale University

S

Department of Botany, Swedish Museum of Natural History

M

Botanische Staatssammlung M�nchen