A NEW ARGENTINE SPECIES OF COCCYGOMIMU8 (HYMENOPTERA, ICHNEUMONIDAE

In contrast to other subdivisions of its genus, which include many well known and abundant species, the strictly Neotropical Albomarginatus Group of Coccygomimus comprises insects for the most part elusive, which are found only occasionally even in those areas subject to regular collecting both by hand and by Malaise traps. For this reason, although the author recently published a monograph of the South American Coccygomimus (Porter, 197o), it was expected that new species of the Albomarginatus Group would appear as fieldwork became possible in previously unexplored regions. Indeed, shortly thereafter both sexes of an undescribed species were recovered from a Malaise trap situated in virgin subtropical wet forest near Aguas Blancas in northern Salta Province, practically on the Bolivian border. The present contribution describes this new species, demonstrating that it is related most ctosely to C. ramirezi from the yungas near La Paz, Bolivia.

South American Coccygomimus (Porter,I97o), it was expected that new species of the ztlbomarginatus Group would appear as fieldwork became possible in previously unexplored regions. Indeed, shortly thereafter both sexes of an undes,cribed species were recovered from a Malaise trap situated in virgin subtropical wet forest near Aguas Blancas in northern Salta Province, practically on the Bolivian border. The present contribution describes this new species, demonstrating that it is related most closely to C. ramirezi  large blotches., one centered on each hind-corner of propodeum; gaster shining black with complete white apical bands o.n tergites -7, an incomplete white apical band on 8, some. pale reddish staining on lateral margins of 4-6, and extensive pale reddish staining on 7 and 8; wings practically hyaline.; fore-leg with coxa black with a very large ventro-lateral white blotch that is extensively margined with pale reddish; trochanter black with dull red on apex; trochantellus dull red; femur red with a broad whitish antero-do.rsal stripe that extends from apex about 2/3 of the way to. the base; tibia pale reddish with considerable dusky staining sub-basally on outer side, a whitish stripe throughout below, and an irregular whitish stripe above which is considerably broadened sub-basally on inner side; and tarsus dull reddish brown with the apical segrnent dusky; mid-leg with coxa pale red, a little dusky on apex, and with a large, irregular, lateral and 1.a.tero-ventral white area; trochanter and trochantellus red; femur red with a little dusky staining on apex; tibia with an irregular premedian white annulus basad of which it is blackish and distad of which it is mostly dull pale red; and tarsus dull reddish with the apical segment more nearly black; hind-leg with coxa red except for a little dusky staining on apex; trochanter and trochantellus red with irregular black staining on trochanter; femur red with black staining on about apical /IO; tibia black with a little dull red staining and a short premedian white annulus; and tarsus black with a little dull red s.taining.
Length of lore-wing: 7. mm. Face: shining with some fine micro-reticulation and abundant, rather large, mostly subadja.cent to adjacent punctures that become densest and in part confluent above. sternite in profile with a rather low but sharply broad-pyramidal elevation sub-basally; tergite in profile with a rather high, rounded hump; dorsal carinae faintly suggested on hump and for a short distance rearward; surface of postpetiole a little dully to, apicad, more brightly shining and, except on the nearly smooth apical /4, with fine, irregular to transverse wrinkling and with so.me intercalated micro-reticulation as well as a number of rather large, faint, mostly well separated punctures. Succeeding tergites: 2 ,shining with well developed fine micro-reticulation and some widely scattered, shallow, inconspicuous, medium-sized to moderately large punctures; the following tergites similar but progressively more brightly shining and less strongly micro-reticulate. Epipleura: all narrow and very much longer than wide. Ovipositor: extremely short, sheathed portion o.2 as long as fore-wing; cylindro-compressed, dorsal valve weakly convex on tip.
MALE: differs from female as follows: Color: scape with a smdl white blotch near apex; tegula almost entirely white, except sometimes for a little brownish staining on apical margin; white blotches on hind-corners of propodeum sometimes even larger than in female, sometimes prolonged mesad and nearly contiguous

Psyche
[December apically; gaster with scarcely any white on the 8th tergite and practically without reddish staining even toward apex; fore-leg with coxa sometimes with a small dorso-lateral white blotch on apex in additio.n to the ventro-lateral white area and a little to much less redbrown staining than in female; trochanter white with a broad to very broad blackish stripe extending throughout above; trochantellus dull brown to orange with a more or less distinct white blotch below and often some whitish staining elsewhere; femur more orangebrown than in female and with the antero-dorsal white stripe broader and extending almost throughout; tibia dull white, above with a small premedian brown blotch and some more or less well developed orange bro.wn or orangish tinging elsewhere and below broadly pallid orange brown on most of apical 2/3; and tarsus with segments 1-4 dull white with faint bro:wn staining on apices and ,segment 5 dark brown; mid-leg with coxa even more broadly white than in female; trochanter with some black staining; emur with blackish staining on about apical I/9; tibia with a very broad white annulus that extends ]ron about basal 1/6 to apical 1/3, more or less blackish brown basa.d of annulus and often more reddish bro:wn behind; hind-leg with coxa sometimes with a faint whitish stain above nea.r base; femur blackish sta.ined on about apical 1/6 to a little more than 1/5; tibia black, practically without reddish staining, and with the premedian white annulus a little broader than in female; and tarsus more intensely black tlan in female, with a little brownish staining only near base of ISt segment.
Length of fore-wing: 6.2-6.6 mm. Face: punctures slightly coarser and denser than in female, mostly adjacent to a little confluent. Clypeus: apex practically truncate. Temple: o.62-o.8o as long as eye in lateral view. Malar space: 0.64-0.68 as long as basal width of mandible.
Mesopleuron: with the punctures coarser and more generally reticulo-confluent than in female. Meta'pleuron: with definitely coarser sculpture than in female.
Propodeum: rather low and elongate; median longitudinal carinae sometimes more strongly suggested than in female; cristal angles even more pronouncedly subpyramidal than in female, the lateral longitudinal carinae sharp and high betwee.n cristae and hindrim of apical face; strong transverse wrinkling of basal face becoming reticulate and mingled with more or less distinct la.rge punctures on basal 1/2 of lateral field. xst gastric segment" postpetiole 0.70'-0.78 as long as wide at apex; sub-basal elevation of sternite a little blunter than in female; basal 3/4 of postpetiole duller and more strongly sculptured than in female, with coarser micro-wrinkling which is irregularly transbiased on central field but more reticulate laterad, as well as with more numerous and more discrete intercalated punctures, particularly on lateral field. Succeeding tergites: 2 rather dully shining with strong, reticulate to trans-biased micro-wrinkling and abundant, moderately large, distinct but shallow to obscure, mostly adjacent to confluent punctures; 3 and 4 similar to 2; but 5-7 progressively more shining and with weaker punctures and wrinkling.
TYPES: The female holotype and one male para.type have been deposited in the collection of the Miguel Lillo Institute, San Miguel de Tucumin, Argentina. The second male paratype is in the collection of Charles C. Porter (RFD 3, Cambridge, Maryland, U.S.A.).
DIsct;SSION" The first record of C. akulicai was a male collected near San Salvador de Jujuy during March of 969, and in the author's revision of the South American Coccygomimus (Porter,I97O,p. Io) that specimen was associated tentatively with a Bolivian i:emale therein described as C. ramirezi. However, subsequent discovery of a Saltefian female obviously co,nspecific wit'h the male from Jujuy but different in severn.1 important features from the female of ramirezi confirmed that this Argentine fo, rm, although clo.sely related to the Bolivian Coccygomimus, must be regarded as distinct.
Specifically, jakulicai may be distinguished from ramirezi by the following characters (see figures 2, 3, 4, and 5) Tegula mostly white (instead of mostly blackish) gaster apically with extensive reddish staining; ground color of front femur reddish (instead of bro,wnish black); ground color of fore-tibia pale red (instead of brownish black); hind-coxa red with a little dusky staining on apex (instead of red on basal I/2 and black on apical /2); punctures of mesocutum medium sized and mostly we.ll defined (instead of rather small and in large part very superficial and inconspicuous); mesopleuron and metapleuron more coarsely sculptured; propodeum less elongate, its basal face with rather strong and mostly regular transverse wrinkling (instead of with generally finer and extensively irregular wrinkling); postpetiole o.65 ( This is a very humid and almost tropical zone, without recorded rosts and with a short but definite dry season which becomes most pronounced between August and October. The second male paratype comes rom Po.sta de Lozano, an area o mingled Selva and Chaco biota, located 8 km north o San Salvador de Jujuy at 6.oo m. elevation.