Digonocryptus arlequim Santos et Aguiar

Aguiar, Alexandre P. & Santos, Bernardo F., 2012, Additions to the revision of Digonocryptus Viereck (Hymenoptera, Ichneumonidae, Cryptinae), with nine new taxa, new males, and distribution maps for all known species, Zootaxa 3282, pp. 1-41 : 3-5

Digonocryptus arlequim Santos et Aguiar , sp. nov.

( Figs 1–4 , 51 )

Description. Holotype FEMALE. Fore wing 9.35 mm.

Head ( Figs 1–2 ). Ventral tooth of mandible slightly longer than dorsal tooth. Clypeus apical area delimited by smooth border, medially almost indistinct; clypeal margin medially with two minute teeth. Antenna with 25 flagellomeres; white band starting at flagellomere V; five flagellomeres at least 50% white.

Mesosoma ( Figs 2–3 ). Pronotum glabrate, finely punctulate, with weak longitudinal wrinkles on collar and along dorsal margin; mesopleuron and metapleuron densely covered with short hairs with scarce, short hairs; mesopleuron mostly finely punctulate. Subalar prominence wide, suboval, keeled. Sternaulus complete, crenulate. Sulcus between sternaulus and scrobe absent, but delimited by faint strigation. Posterior transverse carina of mesosternum medially shortly developed. Lower metapleuron rugulose. Propodeum: laterally and posteriorly to posterior transverse carina, densely pilose; area in front of anterior transverse carina sparsely and weakly foveolate, medially with two very weak longitudinal ridges; posterior transverse carina complete, medially acuminate, sublaterally forming high, rounded apophyses; area between anterior and posterior transverse carinae with somewhat regular longitudinal wrinkles; area between posterior carina and petiolar foramen strigate-rugulose. Wings hyaline; fore wing cell 1+2Rs about as wide as high, pentagonal, 2r-m and 3r-m slightly convergent, 3r-m slightly longer, 3r-m mostly spectral; 2-M about as long as 3-M; vein 3-Cu 1.38 length of 4-Cu; hind wing vein Cub apically distinctly convex.

Metasoma ( Figs 2, 4 ). Postpetiole dorsally, at level of spiracles, flat; dorsolateral carina faintly suggested on posterior half, otherwise absent; ventrolateral carina strong on posterior half, otherwise only faintly suggested; median dorsal carina absent; petiolar spiracles in dorsal view not prominent. Ovipositor 1.27 length of hind tibia. Apex of lower valve apex with 14 teeth.

Color. Head orange, yellow and blackish; mesosoma and metasoma orange with multiple yellow marks. Head: tricolored; basolateral portion of clypeus, most of supra-clypeal area, scape ventrally and vertex, orange; mouthparts, clypeus centrally, and orbital band, except by interruption at malar space, yellow. Mesosoma: orange; collar, small mark on dorsal margin of pronotum, most of scutellum, subalar prominence, small ventral mark on mesopleuron, most of carinal triangle, dorsal mark on metapleuron and U-shaped mark on propodeum, yellow; all coxae with large whitish spots; fore and mid trochanters whitish; fore femora brownish with blackish marks; fore tibia brownish with dorsal face whitish; fore tarsus light brown, with whitish mark on t1; mid femur orange with extreme base and apex blackish; basal 0.4 of mid tibia and apical 0.7 of t1, whitish; apical 0.6 of mid tibia, basal 0.3 of t1 and t2–5, blackish; hind trochanter and femur orange with small blackish marks; basal 0.25 of hind tibia, apical 0.8 of t1 and t2–3, whitish; apical 0.75 of hind tibia, basal 0.2 of t1 and t4–5, blackish. Metasoma: T1 orange with complete posterior yellow stripe; T2–6 orange with medially interrupted yellow stripe, medial interruption progressively wider; T7 almost entirely yellow; T8 and S1 orange; S2–6 mostly yellow, with lateral orange marks.

MALE. Unknown.

Comments. A very characteristic species, with quite particular color pattern and propodeal structure among all known species of Digonocryptus ; it can hardly be confused with any other species of the genus. Runs effortlessly to dichotomy 45 in the key by Aguiar and Ramos (2011), where decision becomes ambiguous for the present species. At that point, however, the key will lead to only four species; the new species is immediately separated from the first two, D. inflatus and D. caraguatensis , by having a nearly complete orbital band (vs. fragmented), and from the other two by its hyaline wing (vs. with large central dark spot in D. pitchus ) and the stout posterior transverse carina (absent in D. siraeus ), with relatively long apophyses (vs. quite low on all other species mentioned above).

Etymology. The specific epithet is a name in apposition, and derives from the Portuguese word for harlequin, in reference to the fragmented and colorful pattern of the body.

Material examined. Holotype Ƥ from ECUADOR, MorroMorro near Piñas, 1500 m, 22.VIII.1941 ( AMNH). Pinned; left front leg from tibia and right hind t1 missing, t2–5 glued to label, otherwise complete, well preserved.

Distribution. Ecuador ( Fig. 51 ).

Figures

FIGURES 1 – 4. Digonocryptus arlequim Santos et Aguiar, sp. nov. Holotype female. 1, Head, anterior. 2, Habitus. 3, Propodeum, dorsal. 4, Metasoma, dorsal.

FIGURES 48 – 55. Distribution maps for species of Digonocryptus. 48, D. annulitarsis (Cameron). 49, D. arcaeus Aguiar et Ramos. 50, D. archisius Aguiar et Ramos. 51, D. arlequim Santos et Aguiar. 52, D. atrozyrix Aguiar et Ramos. 53, D. banius Aguiar et Ramos. 54, D. boraeus Aguiar et Ramos. 55, D. caceres Aguiar et Ramos.