Acrotaphus wiltii (Cresson, 1870),

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: 56-57

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Acrotaphus wiltii (Cresson, 1870)


Acrotaphus wiltii (Cresson, 1870) 

( Figs 211–220View FIGURES 211–221)

Epimecis wiltii Cresson, 1870: 143  . Lectotype ♀, USA (ANSP), designated by Cresson , 1916: 63 [examined].

Acrotaphus wiltii (Cresson)  , 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 behind eyes flat in dorsal view; 2) posterior ocelli separated from eyes by 0.1× (0.1–0.3 in male) its diameter in dorsal view; 3) metasoma entirely orange or orange with tergites VI+ black; 4) hind leg orange, with distal tibia 0.2–0.3 blackish; 5) ovipositor 1.5–1.7× as long as hind tibia.

Comments. Additional characters to the original description (♀) are as follows: body [16.0] 13.0–18.0 mm; lower face [0.8] 0.8–0.9× as broad as high (from supraclypeal suture to base of antenna); margin of gena behind eyes flat in dorsal view; margin of gena [0.3] 0.3–0.4× 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 [0.6] 0.5–0.7× 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 [12.5] 10.0–15.0 mm; cu-a opposite to the base of Rs&M; 2 rs-m [0.7] 0.6–0.8× 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 [1.1] 0.9–1.1× length of cu- a; tarsal claw with basal lobe quadrangular, with claw apex slightly overtaking the posterior margin of lobe; tergite I [2.0] 1.7–2.0× as long as posteriorly broad; tergite II [1.45] 1.4–1.7× as long as posteriorly broad; tergite III [1.3] 1.1–1.7× as long as posteriorly broad; tergites IV–V [1.3] 1.1–1.7× as long as posteriorly broad; ovipositor robust, [1.5] 1.5–1.7× as long as hind tibia; lower valve with swelling in the mid region. Male. ( Figs 215–216View FIGURES 211–221). Similar to female in structure and coloration, except margin of the gena behind the eyes flat or slightly convex in dorsal view; margin of gena 0.4–0.5× length of eye in dorsal view; posterior ocelli separated from eyes by 0.1–0.3× its diameter in dorsal view; sternite IX ( Fig 218View FIGURES 211–221) longer than high, with lateral and anterior margins strongly sclerotised, with anterior margin flat and posterior margin concave, with few bristles widely spaced posteriorly. Genital capsule ( Figs 219–220View FIGURES 211–221): 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 four to five bristles in anterolateral region, just below the base of the digitus; cuspis robust with about eight to ten teeth aligned in the mid part until apex and with five to seven few bristles spaced in basal region and four to five few bristle laterally spaced in apical region; digitus with teeth on 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. Canada and USA ( Fig 221View FIGURES 211–221).

Biological notes. Parasitoid of Epeira trivitta Keyserling, 1863  (Shannon, 1913) and Neoscona arabesca (Walckenaer, 1941)  .

Material examined. Lectotype: ♀, USA, Ohio [without other information], #1540, ANSP. USA: FLA [=Florida], Liberty Co., Torreya State Park , 23.v.1981, MV Light (H.D. Baggett leg.), 2♀, FSCA; idem, but 18.v.1963 (H. V. Weems Jr. coll.), ♀, FSCA; idem, but Jackson County , Florida Caverns St. Pk., 18.iv.1963, Balck Light Trap ( R. E. Woodruff), ♀, FSCA; idem, but Gainesville , 18.v.1958, in wooded ravine (H. V. Weems Jr. coll.), ♀, FSCA; idem, but Alachua Co. , Spring Forest Subdivision , 02.vii.1988 (G. R. Buckingham), ♀, FSCA; idem, but Doyle Conner Building , 15.x.1990, in pine and hardwoods (C. Porter), ♀, FSCA; idem, but Serenola Forest , 10.iv.1989 (P.J. Landolt coll.), ♀, FSCA; idem, but 20.iii.1989, ♀, FSCA; idem, but 29°34,5’N / 82°29’W, 13.iii.1990, Light Trap ( R. W. Lundgren), ♀, FSCA; idem, but Pine Hill Estates, 31.x.1971, Black Light Trap (H. V. Weems Jr. coll.), ♀, FSCA; idem, but Okaloosa County , 1. Mi. N. Holt, Black-Water St. For., 24.x.1978, Black Light Trap (L. Stange), ♀, FSCA; idem, but Orange Co. , 22 Mi. SE Orlando, 01.iv.1975, Black Light (J.B. Happner), ♀, FSCA; Texas, Uvalde Co. , Garner State Pk., (G.H. Nelson and family colls.), ♀, FSCA; idem, but Comal Con., 5 Mi. E Canyon Lake ,, (J. R. Powers col.), ♀, #1133931, EMEC; Washington Co., Brenham, (E.C. Knudson leg.), ♀, FSCA; MD [= Maryland], Dorchester Co. , Hudson, 12.viii.1964 (C. Porter), ♂, FSCA; idem, but 06.viii.1965 [without others information], ♂, FSCA; idem, but 28.viii.1965, ♂ [with genitalia extracted], FSCA; idem, but 01.ix.1965, ♀, FSCA; idem, but 24.viii.1965, ♀, FSCA; idem, but 04.viii.1967 (C. Porter), ♀, FSCA; idem, but nr Rockuille, 04.x.1947 (H & M Townes), ♀, # Ent 169616, MNCN [digital image sent by Mercedes París]; Va. [= Virginia], Galax, 27.viii.1955 (H. & M. Townes), 3♂ [two with genitalia extracted], FSCA; idem, but 28.viii.1955, ♀, FSCA; NY [= New York], Poughkeepsie, 26.vii.1936, (H.K. Townes), ♂, FSCA; idem, but 22.vii.1936, ♀ [without head], NHRS-HEVA #2912, ZMUT; idem, but idem, but 16.viii.1936, ♂, NHRS-HEVA #2913, ZMUT; idem, but 02.viii.1936, ♂ [without metasoma], NHRS-HEVA #2914, ZMUT; Armonk, Calder Es- tate, 04.x.1973 (C. Porter), ♀, FSCA; Arkansas, Polk Country, S. of Board Camp., R29 W, T3 S, SE Sec. 22, 04– 05.ix.1983, Coll. at blacklight (C.B. Barr), ♀, #1133932, EMEC; idem, but Wilhamena St. Park, 24–25.viii.2009, BL [=black light] (D. & J. Powell), ♀, #1133933, EMEC; Minn. [= Minnesota], Carlos Avery W.A., Anoka Co. 02.ix.1964 (J.S. Nordin leg.), ♀, FSCA.GoogleMaps 


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Florida State Collection of Arthropods, The Museum of Entomology


Royal British Columbia Museum - Herbarium


Departamento de Geologia, Universidad de Chile


Essig Museum of Entomology


Museum Donaueschingen


Museo Nacional de Ciencias Naturales


University of Tokyo, Department of Zoology














Acrotaphus wiltii (Cresson, 1870)

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

Acrotaphus wiltii

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