Pristicerops HEINRICH

Riedel, Matthias, 2017, Contribution to the Ichneumoninae (Hymenoptera, Ichneumonidae) of Southeastern Asia: 4. Platylabini, Eurylabini, and Oedicephalini, Linzer biologische Beiträge 49 (2), pp. 1275-1307 : 1285-1288

Genus Pristicerops HEINRICH

This genus seems to contain several closely related Oriental species which are difficult to differentiate in the available material. Therefore, the variability of morphological features and colour patterns is still questionable in some species. In addition to the newly described species, I have seen some other specimens probably representing other undescribed taxa of Pristicerops . For a detailed description and unequivocal separation of these species, more material has to be studied in the future.

Pristicerops magnus nov.sp. ( fig. 11 , 35 , 42) H o l o t y p u s: (♀) Laos, Hua Phan Prov., Phon-Pan, Umg. Ort Ban Saleui, 2013´30´´N

10359´26´´E, 1350-1900 m, 01.06.2011 KJa, leg. C. Holzschuh & natives (Linz).

P a r a t y p u s: (3) Laos, Hua Phan Prov., Ban Saleui, Phon-Pan-Mt., 2013´30´´N 10359´26´´E, 1350-1900 m, 29.04.2012 KNo, leg. C. Holzschuh & locals (Linz).

R e m a r k: The taxon is larger than other species of this genus. Beside its large size, it is characterized by lanceolate flagella and ivory spots on lateral sides of prescutellar ridges.

Descr ipt ion:

♀: Body length 15 mm. Flagella with 49 segments, distinctly lanceolate, about 15 th flagellomeres square, widest ones 1.8x wider than long. Temples strongly and almost linearly narrowed behind eyes, length 0.55x eye width. Distance of lateral ocelli to eyes 1.1x their diameter. Frons almost smooth, face punctate. Clypeus flat, with scattered punctures. Malar spaces c.0.9x as long as width of mandibular bases. Genal carinae joining hypostomal ones close to mandibular bases, both carinae narrow.

Mesoscutum finely and densely punctate, notauli not impressed. Mesopleura and metapleura finely punctate, partly striate. Coxal carinae absent. Scutellum moderately elevated, about as long as wide, with complete lateral carinae. Propodeum with slit-shaped spiracles. Area superomedia hexagonal, about as long as wide; costulae distinct, in the middle. Area petiolaris with weak lateral carinae and fine transverse rugae. Dentiparal edges with very small apophyses. Hind coxae densely punctate, without scopa; hind femora punctate, length 4.5x height. Areolets quadrangular, nervuli interstitial.

Metasoma amblypygous. Petiolus flattened. Postpetiolus moderately widened, width 0.7x distance between apophyses, median field slightly elevated, without dorsal carinae, finely rugulose. 2 nd tergite length 0.8x width. Gastrocoeli impressed, with some fine longitudinal striae; thyridiae short, oblique, width 0.6x width of interval. 2 nd and 3 rd tergites coarsely punctate and finely granulate, but more or less shining; 4 th tergite finely granulate, following tergites almost smooth.

Colour: Black; with some reddish suffusion on frons and on anterolateral parts of mesoscutum. Ivory are stripes on flagellomeres 7-15, scapes ventrally, palps, mandibles except teeth, clypeus and face except black central stripe, genae, wide orbits (narrowed on vertices), propleura ventrally, frontal and upper margins of pronotum, two paramedian longitudinal stripes on mesoscutum, lateral sides of prescutellar ridges, scutellum and postscutellum, two large confluent spots on mesopleura, upper hind edges of mesopleura, carinal triangles and spots on metapleura, apical half of propodeum except black area petiolaris, apical bands of all tergites, fore and middle coxae and trochanters, and hind coxae apically and dorsally. Middle trochantelli and hind trochanters black; femora, tibiae and tarsi reddish-yellow; fore and middle femora with apico-caudal black spots; hind femora black in apical 0.3; fore and middle tibiae blackish on outer sides; middle tibiae with subbasal yellow rings; hind tibiae yellow, blackish basally and apically; hind tarsi completely yellow-red. Wings hyaline, pterostigmas dark brownish.

3: Body length 14 mm. Flagella with more than 32 segments (tips broken off), apical flagellomeres distinctly sub-serrate (as typical for this genus). 1 st flagellomeres length 4.0x width. Tyloids long-oval, on flagellomeres 10-19, at most 0.9x as long as their segments. Hind femora length 4.9x height. Colour black and ivory, without reddish suffusion. Structure and coloration otherwise as described for the &.

D i s t r i b u t i o n: Laos.

Pristicerops nigricornis nov.sp. ( fig. 12 , 43) H o l o t y p u s: (3) Laos, Hua Phan Prov., Phon-Pan, Umg. Ort Ban Saleui, 2013´30´´N

10359´26´´E, 1350-1900 m, 06.- 11.04.2014 KJa, leg. C. Holzschuh & natives (Linz).

R e m a r k: This species differs from other known males of Oriental Pristicerops by the completely dark flagella and dark hind legs.

D e s c r i p t i o n

Body length 13.5 mm. Flagella with more than 41 segments (tips broken off), apical flagellomeres distinctly sub-serrate (as typical for this genus); 1 st flagellomeres length 3.8x width. Tyloids bacilliform, on flagellomeres 11-18, the longest ones as long as their segments. Temples strongly and roundly narrowed behind eyes, length 0.4 eye width. Distance of lateral ocelli to eyes 1.2x their diameter. Frons almost smooth, face punctate. Clypeus almost flat, with scattered punctures. Malar spaces short, c.0.4x as long as width of mandibular bases. Genal carinae joining hypostomal ones close to mandibular bases, both carinae narrow.

Mesoscutum finely and densely punctate, notauli impressed in frontal fifth. Mesopleura and metapleura finely punctate, partly striate. Coxal carinae absent. Scutellum moderately elevated, about as long as wide, with complete and high lateral carinae. Propodeum with slit-shaped spiracles. Area superomedia heart-shaped, about as long as wide; costulae frontal to middle. Area petiolaris with lateral carinae and fine transverse rugae.

Dentiparal edges with very small apophyses. Hind femora densely punctate, length 4.7x height. Areolets quadrangular, nervuli interstitial.

Postpetiolus moderately widened, width 0.6x distance between apophyses, median field slightly elevated, without dorsal carinae, coarsely rugulose. 2 nd tergite length 1.05x width. Gastrocoeli slightly impressed; thyridiae oblique, width 0.8x width of interval. 2 nd and 3 rd tergites granulate and with superficial punctures, matte; 4 th tergite finely granulate and shining, following tergites almost smooth.

Colour: Black. Ivory are scapes ventrally, palps, mandibles except teeth, clypeus and face completely, genae (interrupted on malar spaces), wide orbits (narrowed on vertices), propleura ventrally, frontal and upper margins of pronotum, two longitudinal stripes on mesoscutum, small spots on lateral sides of prescutellar ridges, scutellum and postscutellum, two large spots on mesopleura (the frontal ones confluent with large mesosternal marks), upper hind edges of mesopleura, carinal triangles and spots on metapleura, apical half of propodeum (except black area petiolaris), narrow apical bands of all tergites, fore and middle coxae and trochanters, and hind coxae apically and dorsally. Trochantelli and hind trochanters black; fore and middle femora and tibiae brownish-red; femora apicodorsal with yellow spots; tibiae with black stripes externally; hind femora blackish, with dark reddish suffusion ventro-medially; hind tibiae black, yellowish-brown internally; all tarsi black. Wings hyaline, pterostigmas black.

♀ unknown.

D i s t r i b u t i o n: Laos.

Pristicerops paraprincipalis nov.sp. ( fig. 13 , 40, 41 ) H o l o t y p u s: (♀) Laos, Hua Phan Prov., Phon-Pan, Umg. Ort Ban Saleui, 2013´30´´N

10359´26´´E, 1350-1900 m, 19.04.2012 KJa, leg. C. Holzschuh & natives (Linz).

P a ra t y p u s: (♀) Laos, Hua Phan Prov., Phon-Pan, Umg. Ort Ban Saleui, 2013´30´´N 10359´26´´E, 1350-1900 m MSL, 01.06.2011, leg. C. Holzschuh & natives (Linz).

R e m a r k: This new taxon is closely related to Pristicerops principalis HEINRICH. It differs by its wider temples, stouter hind femora, almost completely yellowish hind tibiae and black coloration of central clypeus and face.

D e s c r i p t i o n

Body length 10-11 mm. Flagella with 46 (HT) or 40 (PT) segments, distinctly lanceolate, c.15 th flagellomeres square, widest ones 1.5-2.0x wider than long. Temples slightly and roundly narrowed behind eyes, length 0.75x eye width. Distance of lateral ocelli to eyes 1.3x their diameter. Frons almost smooth, face densely punctate. Clypeus almost flat, with scattered punctures. Malar spaces c.0.8x as long as width of mandibular bases. Genal carinae joining hypostomal ones close to mandibular bases, both carinae narrow.

Mesoscutum finely and densely punctate, notauli not impressed. Mesopleura and metapleura densely punctate. Coxal carinae absent. Scutellum only slightly elevated, about as long as wide, with complete lateral carinae. Propodeum with slit-shaped spiracles. Area superomedia hexagonal, slightly wider than long; costulae distinct, caudal to middle. Area petiolaris with distinct lateral carinae and transverse rugae. Dentiparal edges with very small apophyses. Hind coxae densely punctate, without scopa; hind femora stout, punctate, length 3.8-3.9x height. Areolets quadrangular or narrowly pentagonal, nervuli interstitial or slightly antefurcal.

Metasoma amblypygous. Postpetiolus moderately widened, width 0.7x distance between apophyses, median field slightly elevated, without dorsal carinae, almost smooth and shining. 2 nd tergite length 0.75x width. Gastrocoeli slightly impressed, with some fine longitudinal striae; thyridiae short, oblique, width 0.7x width of interval. 2 nd and 3 rd tergites coarsely punctate and finely granulate, but more or less shining; 4 th tergite finely granulate, following tergites almost smooth.

Colour: Black. Ivory are stripes on flagellomeres 8-13/15, scapes ventrally, palps, mandibles except teeth, sides of clypeus, wide triangular facial orbits, genae, wide orbits (narrowed on vertices), frontal and upper margins of pronotum, two longitudinal paramedian stripes on mesoscutum and (in HT) small lateral stripes opposite to tegulae, scutellum and postscutellum, two large spots on mesopleura, upper hind edges of mesopleura, carinal triangles and spots on metapleura, apical areae dentiferae and complete areae posteroexternae, apical bands of all tergites, fore and middle coxae and trochanters, and hind coxae apically and dorsally. Middle trochantelli and hind trochanters black; femora, tibiae and tarsi reddish-yellow; fore and middle femora with apico-external yellow spots; fore and middle tibiae and tarsi with brown stripes externally; hind femora black in apical 0.25; hind tibiae almost completely yellow (in PT narrowly infuscate on apex); hind tarsi yellow-red, apical hind tarsomeres blackish. Wings hyaline, pterostigmas dark brownish.

3 unknown.

D i s t r i b u t i o n: Laos.

Figures

Fig. 6-11: Heads from dorsal of (6) Apaelecticus rufopetiolaris nov.sp. HT; (7) Ectopoides flavoverticalis nov.sp. HT; (8) Paragenes rufocoxalis nov.sp. HT; (9) Platylabus flavomaculatus nov.sp. HT; (10) Platylabus laoticus nov.sp. HT; (11) Pristicerops magnus nov.sp. HT.

Fig. 32-35: Propodeum of (32) Granulolabus maculatus nov.sp. HT; (33) Platylabus flavomaculatus nov.sp. HT; (34) Platylabus laoticus nov.sp. HT; (35) Pristicerops magnus nov.sp. HT.

Fig. 12-17: Heads from dorsal of (12) Pristicerops nigricornis nov.sp. HT; (13) Pristicerops paraprincipalis nov.sp. HT; (14) Notosemus heinrichi nov.sp. HT; (15) Notosemus rufator nov.sp. HT; (16) Notosemus albimaculatus SHENG & SUN 3; (17) Notosemus rufonotatus nov.sp. HT.

Fig. 40-41: Pristicerops paraprincipalis nov.sp. HT (40) propodeum and (41) metasoma. Fig. 42-43: Tyloids of (42) Pristicerops magnus nov.sp. PT; (43) Pristicerops nigricornis nov.sp. HT. Fig. 44: Face of Eurylabus indolarvatus HEINRICH ♀.