Acrotaphus tibialis (Cameron, 1886)

Pádua, Diego G., Sääksjärvi, Ilari E., Monteiro, Ricardo F. & Oliveira, Marcio L., 2020, Review of the New World genus Acrotaphus Townes, 1960 (Hymenoptera: Ichneumonidae: Pimplinae), with descriptions of fifteen new species, Zootaxa 4719 (1), pp. 1-62 : 52-54

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Acrotaphus tibialis (Cameron, 1886)


Acrotaphus tibialis (Cameron, 1886)

( Figs 191–199 View FIGURES 191–200 )

Epimecis tibialis Cameron, 1886: 217 . Lectotype ♀, Mexico (BNHM), designated by Townes & Townes, 1966: 19 [exam- ined].

Acrotaphus tibialis (Cameron) , Townes & Townes, 1960: 256

Diagnosis. This species can be distinguished from all other species of Acrotaphus by the combination of the following characters: 1) margin of gena flat behind eyes in dorsal view; 2) posterior ocelli separated from eyes by 0.1× (0.1–0.3× in male) its diameter in dorsal view; 3) hind leg orange, with distal 0.3–0.4 of tibia and tarsus blackish; 4) ovipositor 1,5–1.7× as long as hind tibia.

Comments. Additional characters to the original description (♀) are as follows: body [22.0] 15.0–22.0 mm; lower face [0.9] 0.7–1.0× as broad as high (from supraclypeal suture to base of antenna); margin of gena behind eyes flat in dorsal view; margin of gena [0.4] 0.4–0.5× length of eye in dorsal view; posterior ocelli separated from eyes by [0.1]× its diameter in dorsal view; distance from tegula to head greater than [0.5] 0.5–0.6× distance from tegula to hind margin of propodeum; epicnemial carina present ventrally, extending until reaching the level of the lower corner of pronotum laterally; fore wing [17.0] 9.0–17.0 mm; cu-a opposite to the base of Rs&M; 2 rs-m [0.7] 0.7–0.9× as long as abscissa of M between 2 rs-m and 2 m-cu; hind wing with abscissa of Cu 1 between M and cu-a [1.15] 0.9–1.2× length of cu- a; tarsal claw with basal lobe quadrangular, with claw apex slightly overtaking the posterior margin of lobe; tergite I [1.8] 1.7–1.9× as long as posteriorly broad; tergite II [1.8] 1.5–1.8× as long as posteriorly broad; tergite III [1.3] 1.3–1.5× as long as posteriorly broad; tergites IV–V [1.3] 1.1–1.5× as long as pos- teriorly broad; ovipositor robust, [1.5] 1.5–1.7× as long as hind tibia; lower valve with swelling in the mid region.

Male. ( Figs 194–195 View FIGURES 191–200 ). Similar to female in structure and coloration, except margin of gena 0.5× length of eye in dorsal view; posterior ocelli separated from eyes by 0.1–0.3× its diameter in dorsal view; sternite IX ( Fig 197 View FIGURES 191–200 ) longer than high, with lateral and anterior margins strongly sclerotised, lateral margin flat and posterior margin slightly concave, with few bristles widely spaced posteriorly. Genital capsule ( Figs 198–199 View FIGURES 191–200 ): Paramere truncated apically, slightly narrower than the parameral lamina, with bristles except in posterior margin; volsellar lamina with bristles anteroapically spaced in anterior margin and with a set of about three to six bristles in anterolateral region, just below the base of the digitus; cuspis robust with about four to six teeth aligned in the mid part until apex and with four to eight few bristles spaced on apical region; digitus with teeth in apex, rounded distally and angular ventrally, with the margins of the apical region narrower than base; aedeagus with few teeth on apex and its apex slightly curved downward in lateral view.

Distribution. Colombia **, Costa Rica, Guatemala, Mexico *, Panama, USA, Venezuela ** ( Fig 200 View FIGURES 191–200 ).

Biological notes. Parasitoid of Metazygia sp. ( Gauld, 1991) and Argiope trifasciata (Forsskal, 1775) ( Eberhard, 2013) .

Material examined. Lectotype: ♀, MEXICO,Valladolid,Yucatán(Gaumer), #HYM3.G.848[sic],#010202128, BNHM. Colombia: Meta, PNN [=Parque National Naturale] Sumapaz, Cabaña Las Mirlas, 03°48’N / 73°52’W, 710 m., Malaise, 20.viii–05.ix.2003 (A. Torrijos leg.), ♀, M.4341 [?], #53025, IAVH. Costa Rica: S. [= San] J. [= Jose], San Antonio de Escazu, 1300 m., 30.iii.1984 (W. Eberhard), ♀, BNHM; Alajuela, Ca. Esparta, 800 m. (?) [sic], xi.1981 (without collector), ♀, BNHM. Mexico: Temascal, Oax. [=Oaxaca], 21.ix.1963 (D.H. Janzen), 2♀, #203,391 and #203,392, EMEC; idem, but Chis. [=Chiapas], 3000 ft., 20 mi. N. de Huixtla, (W. R. M. Mason), ♀, CNC; idem, but 20–25 mi. N. de Huixtla, (B. V. Peterson), ♂, CNC; Veracruz, Estacion [de] Biol. [= Biologia] Los Tuxtlas, (J.L. Colin), ♂ [with last metasomal tergites extracted], #5435, UNAM. Panama: Chiriqui, Irhe, Los Planes, 16 km Ne Gualaca, 8,6237, -82,2171, 20.i.1992, Light Trap, 800 m. (H. Stockwell), ♀, #ENT_0118827, STRI [digital image sent by Annette Aiello]. Venezuela: Mérida, Río Frío, via Tucaní, Mun. [=municipality] Caracciolo Parra y Olmedo, Finca El Pedregal Cacao, T. [= Trap] Malaise, 01–17.vii.2009, ♀, UCLA; idem, but 01–28.viii.2009, ♂, UCLA; La. [= Lara], Torres, Sicarigua, 17.xii.1980 (J. R. Alvarez), ♂, UCLA. USA: Texas, Hidalgo City, Bentsen Rio Grande Valley State Park , (C. Porter), ♀, FSCA; idem, but, 4♀ and 2♂ [with last metasomal tergites extracted], FSCA; idem, but 23.v.1977, ♀, FSCA. GoogleMaps


Beijing Natural History Museum


Instituto de Ivestigacion de los Recursos Biologicos Alexander von Humboldt


Essig Museum of Entomology


Departamento de Geologia, Universidad de Chile


Canadian National Collection of Insects, Arachnids, and Nematodes


Royal British Columbia Museum - Herbarium


Universidad Nacional Autonoma de Mexico


Tavera, Department of Geology and Geophysics


University of California at Los Angeles


Florida State Collection of Arthropods, The Museum of Entomology














Acrotaphus tibialis (Cameron, 1886)

Pádua, Diego G., Sääksjärvi, Ilari E., Monteiro, Ricardo F. & Oliveira, Marcio L. 2020

Acrotaphus tibialis

Townes, H. & Townes, M. 1960: 256