Eupsenella testaceicornis Kieffer 1910
Creators: name: Azevedo, Celso O.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Bethylidae
Eupsenella
Eupsenella testaceicornis

description: Lytopsenella testaceicornis (Kieffer, 1910)
(Figs. 2–6)
Eupsenella testaceicornis Kieffer, 1910: 54 (description); Kieffer, 1911: 203 (genus composition); Sorg, 1988: 144 (list). Lytopsenella testaceicornis: Kieffer, 1914: 544 (key), 555 (description); Evans, 1964: 183 (list); Sorg, 1988: 8 (list), 37 (Fig. 9c), 54 (evolutionary comments); Gordh & Móczár, 1990: 33 (catalog); Ohl, 1995: 410 (list), 413 (comparison); Azevedo, 1999b (misidentified as L. herbsti): 234 (distribution and key), 236, 238–239 (additional data and description of male), 235 (Figs. 4–6).
Material examined. Lectotype Ƥ, CHILE, [VI región], Rengo Cordill., Schönemann col. (ZMHB, #163); paralectotype Ƥ, CHILE, Rengo Cordill., Schönemann col. (ZMHB, #162); 1♂, CHILE, [VII región], Linares, La Vega (6 km S Parral), 8.XI.1991, M. Elgueta col (UFES).
New material. ARGENTINA, Neuquén, Parque Nac[ional] Lanín, 2km nw Nonthué, 40º08´S 71º 38´W, 1Ƥ and 1♂, 20–24.II. [19]99, M[alaise] t[rap], 1♂, 20.II.1999, S.L. Heydon & J. Ledford col. (UCDC); CHILE: VIII región, 2Ƥ and 1♂, Agua Larga, 23.III.1996; 8Ƥ and 1♂, Periquillo, 21.XII.1996; 1Ƥ Periquillo, 22.XII.1995, TC-458; 1Ƥ, Periquillo, 23.IX.1995, TC-455; 3Ƥ Periquillo, 7.X.1994; 1♂, {stated VII región at label}, Concepción, Periquillo, 30.I.1997; 1Ƥ and 1♂, Chome, 14.X.1995; 1Ƥ, [VIII región], Concepción, camino a Hualqui, 6.XI.1994; 1Ƥ, Las Escaleras, 4.I.1995; 1Ƥ, Patagual, 23.XI.1993, TC-388; 1Ƥ, {stated XII región at label}, región, Patagual, 18.XI.1996; 1Ƥ, Bio, Ñuble, Punta, El Zorro, 20.XII.1992; 1Ƥ, Ñuble, Los Ñirres, 12.III.1994; 1Ƥ, {stated XII región at label}, El Manzano, 12.X.1999, all T. Cekalovik col. (UCDC); 1Ƥ, VIII región, Pichinahuel Ar[auco], XII.1958, L.E. Peña col. (UFES); IX región, 1Ƥ, Malleco Pr., 20km W Curacautin, Nothofagus for[est], 1000m, 12.XII.1984 – 16.II.1985, F[light] I[nterception] T[rap], S. & J. Peck col. (CNCI); 1Ƥ, road to Volcán Villarica e Rio Seco, 7.XII.1994, 39º20´S 71º58´W, S.L. Heydon & E. Arias col. (UCDC); 1Ƥ, Salto El Puma, ~ 28km se. Pucón, 7.XII.1994, 39º25´S 71º45´W, S.L. Heydon & E. Arias col. (UCDC); 1Ƥ, Parque Nacional Nahuelbuta, Centro de Informaciones, 8.XII.1994, 37º49´S 73º00´W, S.L. Heydon & E. Arias col. (UCDC); X región, 1Ƥ, LAG, Isla Quinchao, Hullar Bajo, 17.II.1995; 2Ƥ, Isla Quinchao, Laguna Pulol, 22.I.2000; 1Ƥ, LAG, Isla Lemuy, Puerto Hajo, 20.II.1996; 1Ƥ, Isla Chilloé, Piruquina, 16.II.1995; 1Ƥ, Isla Chilloé, Piol - Pid, 14.II.1995; 1Ƥ, Isla Chilloé, Coipomo, 20.I.2000; 1Ƥ, Isla Chilloé, Piol - Pid, 14.II.1995; 1Ƥ, Isla Chilloé, road to Melleico, 18.II.1995, all T. Cekalovik col. (UCDC).
Diagnosis. The females of this species can be separated from the previous species by the head being rounded in dorsal view, and little developed behind eye, and also by the posterior ocellus distant from vertex crest less than DAO.
Description. Female (Figs 2–3).- Body length 2.5–3.7 mm. Length of fore wing 1.7–2.5 mm. Color. Head and mesosoma black, few specimens dark castaneous; metasoma dark castaneous; antenna light to dark castaneous, scape can be black on anterior half or with small dorsal black spot; mandible dark castaneous to black, usually darker medially, one specimen evenly castaneous; legs with coxae, trochanters and femora dark castaneous with tibiae and tarsi lighter, occasionally entirely castaneous; fore wing subhyaline. Few specimens with general colors lighter. Head. Clypeus with angulate median lobe, median carina high and arched in profile extending back into frons. Antennal scape much wider than flagellomeres, flagellar pubescence mostly appressed, with some setae which stand out pubescence. Flagellomeres slightly longer than wide. Antennal scrobe not carinate. Eye sparsely hairy, elliptical in lateral view. Frons somewhat strongly coriaceous, punctures large and shallow, central area can be slightly depressed. Head rounded to roundly elongate, vertex slightly convex, rounded corner and temple convex, badly to slightly divergent anterad; only slightly wider than thorax and about 0.7–0.83x as long as mesosoma. Head about 0.56x as high as long, but one specimen 0.73x as high as long. LH 1.02–1.19x WH; WF 0.56–0.6x WH; WF 1.09–1.28x HE; OOL 1.12–2.0x WOT; posterior ocellus distant from vertex crest 0.6–0.9x DAO. VOL 0.6–0.9x HE. Occipital carina absent, but vertex crest can be sharp. Mesosoma. Pronotal disc varies in length, anterior margin mostly straight, posterior margin not followed by series of foveae. Notaulus weak to well impressed, usually present only in posterior half. Parapsidal furrow complete, but weak, sometimes very inconspicuous on anterior or posteriorly third. Scutellum flat to somewhat elevated, scutellar groove very narrow, sometimes very inconspicuous, basal pit elongate. Propodeal disc 1.3–1.7x as wide as long, wholly areolate, anterior corner with conspicuous fovea, median carina usually absent, but when present very short, less than 0.2x as long as disc, discal carina as short as median one, paralleled by shallow inner depression, disc without posterior and lateral carina, lateral area of disc distinctly hairy, propodeal spiracle very elongate and inclined, its opening contiguous to anterior fovea; declivity ecarinate, lateral area distinctly hairy. Mesopleuron with central pit circular and deep. Fore wing with marginal cell varying in length, first discoidal cell varying in length and height, angled or rounded apically, prostigma absent. Claws with first tooth straight with apex truncate and oblique, second arched with apex sharpened. Metasoma. Longer than mesosoma, up to 2.0x longer; transverse section elliptical; segment I–VII with about same length; apical sternites flat.
Diagnosis. The male of this species has the head rounded in dorsal view and slightly developed behind eye, the posterior ocellus distant from vertex crest less than DAO, and the genitalia with the paramere completely divided into two arms while the aedeagus is wide.
Description. Male (Figs. 4–6).- Body length 2.0–3.0 mm. Length of fore wing 1.6–2.0 mm. Color. Head and mesosoma dark castaneous to black; metasoma dark castaneous; antenna light to dark castaneous, few specimens anterior half of scape can be black; mandible light to dark castaneous; legs usually entirely light castaneous usually with coxae contrastingly darker, in few specimens coxae, trochanters and femora contrastingly dark castaneous; fore wing subhyaline. Head. Clypeus with angulate median lobe, median carina high and arched in profile extending back into frons. Antennal scape wider than flagellomeres, flagellar pubescence mostly appressed, with few setae which stand out pubescence. Flagellomeres as long as or longer than wide. Antennal scrobe not carinate. Eye bulging, sparsely setae, elliptical in lateral view. Frons coriaceous, punctures shallow, slightly convex in profile, central area can be slightly depressed. Head rounded, vertex convex and temple convex and diverging anterad, slightly wider than thorax and 0.7x as long as mesosoma. LH 1.0–1.22x WH; WF 0.5–0.58x WH; WF 0.95–1.08x HE; OOL 1.14–1.41x WOT; posterior ocellus distant from vertex crest 0.6–0.8x DAO. VOL 0.6–0.82x HE. Vertex nearly straight, corner broadly convex. Occipital carina absent, but vertex crest can be sharp. Mesosoma. Pronotal disc with anterior margin mostly straight, posterior margin slightly to very concave, not followed by series of foveae. Notaulus usually complete, incomplete anteriorly in few specimens. Parapsidal furrow weak, usually complete, rarely absent anteriorly, sometimes very inconspicuous or absent on posteriorly third. Scutellum flat, scutellar groove narrow, sometimes very inconspicuous, basal pit elongate. Propodeal disc 1.5–187x as wide as long, wholly areolate, anterior corner with conspicuous fovea, median carina absent, discal carina very short, less than 0.2x as long as disc, paralleled by shallow inner depression, posterior and lateral carina absent or inconspicuous, lateral area of disc distinctly hairy, propodeal spiracle very elongate and inclined, its opening contiguous to anterior fovea; declivity ecarinate, lateral area distinctly hairy. Mesopleuron with central pit elliptical and deep. Fore wing with discoidal cell usually angled apically, sometimes more rounded, prostigma absent. Claws with first tooth progressively narrowing apicad, second and third very close to each other and arched with apex sharpened. Arolium large. Metasoma. Longer than mesosoma, transverse section elliptical; segment I–VII with about same length. Longitudinal carina of sternites I inconspicuous. Hypopygium with posterior margin shortly concave medially. Genitalia: paramere with ventral arm wide with apical margin broadly convex, dorsal arm slightly to conspicuously narrower than ventral arm, apical margin convex, but distinctly less broad than ventral arm, outer surface wholly hairy; basivolsella hairy below digitus; cuspis wide basally, triangular in lateral view; digitus wide with dorsal denticles; aedeagus stout, almost evenly wide, almost wholly divided into lobes.
Distribution. Chile and Argentina (Neuquén).
Remarks. Kieffer (1910) stated “ type ” for this species. In the same paper he stated “ types ” for other species when the description was based in more than one specimen, and “t ype ” for just on specimen. However, I received two females with same label data (ZMHB, #162 and #163), which are apparently to be considered as syntypes. One of them has a lectotype label added by Sorg in 1988. Curiously Sorg (1988) listed “ Lytopsenella testaceicornis KIEFFER 1910 (Syntypus; MNHU)”, but he never stated this lectotype designation in this paper or any further publication.
Azevedo (1999b) misunderstood the concept of the species of Lytopsenella and misidentified 23 L. testaceicornis as L. herbsti. I take this opportunity to correct that mistake. The 3♂ and 20Ƥ from CHILE, IV región, 2♂, Choapa, km 272 Panam. Norte; 19.XI–17.XII.1985; M. Elgueta col. (MNNC); 1Ƥ, Valdivia, Chauquén (S. Panguipulli); 18.I.1992; M. Elgueta col. (MNNC); V región, 1Ƥ Valparaiso, km 7 NE. Papudo; 8.viii.1968; L. & C. W. O’Brien col. (AMNH); 1Ƥ, Petorca, La Canela (E. Longotoa); 29.X.1991; M. Elgueta col. (MNNC); VI region, 1Ƥ, Cardenal Car, Tanumé (N. Pichilemu); 2.XI.1991; M. Elgueta col. (MNNC); 1Ƥ, Las Cruces, C. Parral, Linares; X.1958; L. E. Peña col. (CNCI); VII región, 1Ƥ, Linares, La Vega (6 km S Parral); M. Elgueta col. (MNNC); 2Ƥ, Talca, Canelillos (E. Carrizal); 3.XI.1991; M. Elgueta col. (MNNC, UFES); 1Ƥ, Cauquenes, Pelluhue (S. Chanco); 5.XI.1991; M. Elgueta col. (UFES); VIII región, 6Ƥ Arauco, Pichinahuel, Cord. Nahuelbuta; XI.1958 – I.1959; L. E. Peña col. (CNCI, MNNC, UFES); 1Ƥ, Ñuble, Bulnes; 13.XII.1991; M. Elgueta col (MNNC); 1Ƥ, Concepción, La Florida, 13.XII.1991; M. Elgueta col. (UFES); 1Ƥ, Concepción, Collico Norte; 13.XII.1991; C. Muñoz col. (MNNC); IX región, 1Ƥ, Malleco, Cabreria, 1100 m, Cord. Nahuelbuta; 9–15.I.1977; L. E. Peña col. (CNCI); 1Ƥ, Mariluan, 200 m, W. Victoria; 30– 31.XII.1976; L. E. Peña col. (CNCI); 1♂, Cautin, 15 km NE, Villarrica, Flordel Lago; 14.XII.1984 – 10.II.1985; S. & J. Peck col. (MNNC) which were identified as L. herbsti are to be considered as L. testaceicornis.
description: Published as part of Azevedo, Celso O., 2009, Synopsis of Lytopsenella Kieffer (Hymenoptera: Bethylidae), pp. 58-64 in Zootaxa 2286 on pages 61-63, DOI: 10.5281/zenodo.191267