Stethantyx sanjosea Khalaim & Broad, 2013

Khalaim, Andrey I., Sääksjärvi, Ilari E. & Bordera, Santiago, 2013, Tersilochinae of Western Amazonia (Hymenoptera: Ichneumonidae). Genus Stethantyx Townes, part 1, Zootaxa 3741 (3), pp. 301-326 : 317-319

Stethantyx sanjosea Khalaim & Broad, 2013

( Figs 37, 38 )

Variation. Studied material from Peru and Ecuador is rather uniform with minor variation in structure and colour pattern. Two females from Allpahuayo ( Peru) possess antennae with weak, inconspicuous pale median bands. Upper half of head is sometimes rather extensively fuscous, but always with two conspicuous orange or reddish marks at top of eye orbits.

Remarks. The species is reported for the first time from South America. Specimens from Peru and Ecuador differ somewhat from Costa Rican specimens, in particular in having a fuscous marks on frons, vertex and temple, longer distance between propodeal spiracle and pleural carina (0.5–1.5 diameters of spiracle in Amazonian material and 0.5 diameters or less in Costa Rican material), and usually shorter and broader basal area of propodeum. Otherwise Amazonian populations are morphologically similar to the Costa Rican population, and we believe that this is geographical variation. Further study of material from e.g. Colombia and Panama will probably confirm or reject this hypothesis.

Material examined. Ecuador, Orellana : 2 ♂ (ZMUT) Onkone Gare, 0º39′25.7′′ S, 76º27′10.8′′ W, 216.3 m, canopy fogging, 21.VI.1994, 21.VI.1996, coll. T.L. Erwin et al. 1 ♂ (ZISP) Tiputini, 0º37′55′′ S, 76º08′39′′ W, 220–250 m, canopy fogging, 26.X.1998, coll. T.L. Erwin et al. Zamora-Chinchipe: 1 ♀ (ZMUT) Bombuscaro, Podocarpus National Park, 1000 m, yellow pan traps, 26.II–4.III.2009, coll. M. Pollet & A. Braekeleer. Peru, Loreto: Iquitos Area, Mishana, clayish soil, coll. I.E. Sääksjärvi et al.: 1 ♀ (ZMUT) 16.IX–1. X.1998, 3 ♀ (ZMUT) 1–16. X.1998, 3 ♀ (ZMUT) 16.X–1. XI.1998, 1 ♀ (ZMUT) 1–16. XI.1998, 5 ♀ (4 ♀ ZMUT, 1 ♀ ZISP) 16.XI– 1. XII.1998, 5 ♀ (ZMUT) 1–16. XII.1998, 13 ♀ (ZMUT) 16.XII.1998 – 1.I.1999. Iquitos Area, Allpahuayo, clayish soil, coll. I.E. Sääksjärvi et al.: 2 ♀ (ZMUT) 18.IX–14. X.1998, 1 ♀ (ZMUT) 4–20. X.1998, 1 ♀ (ZMUT) 17.XI– 3. XII.1998, 2 ♀ (ZMUT, ZISP) 3–17. XII.1998, 4 ♀ (ZMUT) 17.XII.1998 –20. I.1999, 1 ♂ (ZISP) 20.I–8. III.2000, 1 ♀ (ZMUT) 24.III–17. IV.2000, 1 ♀ (ZMUT) 17.IV–3. V.2000, 7 ♀ (ZMUT) 3–25. V.2000, 9 ♀ (3 ♀ ZMUT, 2 ♀ ZISP) 22.V–17. VI.2000, 1 ♀ (ZMUT) 11–29. VI.2000, 1 ♀ (ZMUT) 29.VI–16. VII.2000, 1 ♀ (ZMUT) VI.2000, 1 ♀ (ZMUT) 16.VII–2. VIII.2000, 1 ♀ (ZMUT) 18.VIII–14. IX.2000, 2 ♀ (ZMUT) 14.IX–4. X.2000, 1 ♀ (ZMUT) 15.X–8. XI.2000, 1 ♀ (ZMUT) 8.XI–1. XII.2000, 1 ♀ (ZMUT) 15–28. XII.2000, 1 ♀ (ZMUT) 21.XII.2000 – 23.I.2001. Same data, but white sand, 2000: 1 ♀ (ZMUT) 21.I–22.II, 1 ♀ (ZMUT) 24.III–16.IV, 2 ♀ (ZMUT, ZISP) 16.IV–3.V, 3 ♀ (ZMUT) 3–22.V, 1 ♀ (ZMUT) 1–21.XII. Same data, but varillal: 3 ♀ (ZMUT) 20.VIII– 4. IX.1998, 1 ♀ (ZMUT) 4–18. IX.1998, 1 ♀ (ZMUT) 16.IX–1. X.1998, 1 ♀ (ZMUT) 20.X–5. XI.1998, 2 ♀ (ZMUT) 17.XI–3. XII.1998, 4 ♀ (ZMUT) 1–17. XII.1998, 4 ♀ (ZMUT) 16.XII.1998 – 20.I.1999. 1 ♀ (CEUA) same data, but chamizal, 1–15.XII.2000. Same locality, 30º58′00′′ S, 73º25′16′′ W, 2011, coll. I. Gómez & I.E. Sääksjärvi: 2 ♀ (ZMUT) 13–19.VI, 3 ♀ (ZMUT) 20–26.VI, 3 ♀ (ZMUT) 27.VI–3.VII, 1 ♀ (ZMUT) 4– 10.VII, 1 ♀ (ZMUT) 11–17.VII, 3 ♀ (ZMUT) 18–24.VII, 1 ♀ (ZMUT) 25–31.VII, 1 ♀ (ZMUT) 8–14.VIII, 1 ♀ (ZMUT) 15–21.VIII, 1 ♀ (ZMUT) 12–18.IX, 1 ♀ (ZMUT) 19–25.IX, 1 ♀ (ZMUT) 10–16.X, 2 ♀ (ZMUT) 24–30.X, 2 ♀ (ZMUT) 14–20.XI. 2 ♀ (ZMUT) same data, but 30º58′29′′ S, 73º25′46′′ W, 31.X–6.XI.2011. 1 ♀ (ZMUT) same data, but 30º58′17′′ S, 73º25′20′′ W, 15–21.VIII.2011. 1 ♀ (ZMUT) same locality and collectors, but 23–30.V.2011. 1 ♀ (ZMUT) same locality and collectors, sweeping, IV.2011. Madre de Dios: Los Amigos, 240–290 m, 2008, coll. I. Gómez: 2 ♀ (ZMUT) 21–28.V, 1 ♀ (ZMUT) 5– 12.VI, 1 ♀ (ZMUT) 3– 10.VII, 1 ♀ (CEUA) 31.VII–7.VIII.

Distribution. Costa Rica, Ecuador ( Orellana , Zamora-Chinchipe), Peru (Loreto, Madre de Dios).

Figures

FIGURES 37 – 43. Stethantyx sanjosea, ♀: 37 — head, frontal; 38 — propodeum, dorsal; Stethantyx sinuata sp. nov., ♀, holotype: 39 — head, frontal; 40 — head with antenna, lateral; 41 — propodeum, dorsal; 42 — metasomal segments 2 and 3, dorsal; 43 — apex of ovipositor, lateral.