Agonocryptus nigristernum Gupta, 1982

Supeleto, Fernanda A. & Aguiar, Alexandre P., 2022, One hundred new records, a new species, and the first pictures of Agonocryptus Cushman (Hymenoptera, Ichneumonidae, Cryptinae), Zootaxa 5178 (6), pp. 547-576 : 561

Agonocryptus nigristernum Gupta, 1982 stat. nov.

( Figs 9A–D , 19J , 21H )

Agonocryptus physocnemis nigristernum Gupta, 1982 . Original description, male and female, keyed, map.

Agonocryptus physocnemis nigristernum: Yu et al., 2006 . Catalog.

Variation. Pronotal collar with complete yellow stripe ( Fig. 9C ) (vs. interrupted); mesosternum rarely (3/18) lateroposteriorly with small yellow spot; hind tibia apically blackish (vs. reddish brown); hind t4–5 blackish (vs. yellow); fore wing apically light infuscate (vs. hyaline); T1 rarely basally yellow (1/18) or brown (2/18) (vs. black); T5 with narrow posterior yellow stripe (vs. absent); areolet as long as high (vs. wider than high); second recurrent vein meeting areolet at apical 0.3–0.4 ( Fig. 9C ) (vs. at middle).

Comments. The diagnostic features of the species, namely the clypeal groove black marked, fully black mesosternum, and T1 basally black, varied as follows. Smallest observed specimen (fore wing 7.0 mm), from Arroio Grande (Rio Grande do Sul State, southern Brazil) with mesosternum posteriorly showing two small white spots, and clypeal groove not black, concolorous with the yellowish clypeus. One specimen from Blumenau (Santa Catarina State, southern Brazil) and one from Guarapuava (Paraná State, southern Brazil) also have the mesosternum posteriorly with two small white spots; the former specimen also has the first tergite basally yellow.

Distribution. Argentina, and Brazil (Paraná, Rio de Janeiro, Rio Grande do Sul NR, Santa Catarina) ( Fig. 19J ). Bootstrap analysis suggests that this species occurs typically between 100–500 m, like most Agonocryptus spp. ( Fig. 21H ).

Material examined. Total of 18♀. BRAZIL, 2♀, Paraná,?, Curitiba, 2?, 900 m, 25°26’14.55”S, 49°16’11.75”W, 1977-09-29, F.Giacomel, 3?, DZUP •ib, 1♀, 2ib, Guarapuava , Estação Águas Santa Clara , ib, 1106 m, 25°23’21.25”S, 51°27’40.38”W, 1986-12-15, PROFAUPAR, Malaise , 3ib • 2ib, Rio Grande do Sul, ib, Arroio Grande ,?, ib, 101 m, 32°13’22”S, 53°11’57”W, 2003-03-28, R.F.Krüger, 3ib, UFES • 10ib, 2003-10-10, 5ib • 4ib, Capão do Leão , 2ib, 7 m, 31°48’16”S, 52°24’13”W, 2003-11-28, 2ib, UFES60543 , 2 ib • 4ib, Morro Redondo, 2ib, 101 m, 31°40’22”S, 52°35’30”W, 2003-01-03, 2ib,?, 2ib • 10ib, 2004-01-02, 5ib • 10ib, 2004-01-09, 5ib • 10ib, 2004-04-30, 5ib • 4ib, Pelotas, 2ib, 16 m, 31°44’39”S, 52°13’22”W, 2004-04-16, 5ib • 2ib, Santa Catarina, ib, Blumenau, 2ib, 50 m, 26°55’02.77”S, 49°04’18.90”W,?, V.Graf,?, 2ib, DZUP • ib, 2♀, 2ib, Nova Teutônia, 2ib, 300-500 m, 27°11’0”S, 52°23’0”W, 1966-11, F.Plaumann, Malaise, 2ib, CNCI • ib, 3♀, 8ib, 1968-11, 5ib • ib, 1♀, 8ib, 1968-12, 5ib .

Figures

FIGURE 9. Agonocryptus nigristernum ♀, from Brazil. Habitus, head in frontal view, and dorsal view. A–B, specimen from Santa Catarina (300–500 m); C–D, specimen from Rio Grande do Sul (16 m). Scale bars: 1 mm.

FIGURE 19. All known distribution records forAgonocryptus spp.Species presented in alphabetical order.Previously published data plotted as circles, new records as triangles.

FIGURE 21. Typical elevation, in meters, for species of Agonocryptus with 6 or more confirmed records (N). Each histogram built from 200 bootstrap resampling. Results are sorted from lowest to highest average. Alphabetically: A. adustus (K); A. chichimecus (B); A. discoidaloides (A); A. flavosternum (C); A. fumosus (F); A. lioneli (D); A. nigristernum (H); A. physocnemis (J); A. rufithorax (E); A. rugifrons (L); A. russulus (G); A. varus (I).