Platylabus lieftincki HEINRICH , 1934

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 : 1283-1285

Platylabus lieftincki HEINRICH, 1934

M a t e r i a l: Laos, Hua Phan Prov., Phon-Pan, Umg. Ort Ban Saleui, 2013´30´´N 10359´26´´E, 1350-1900 m, 13 10.V.2011, leg. C. Holzschuh & natives (Linz).

D i s t r i b u t i o n: Widespread in the Oriental region, new for Laos.

Platylabus laoticus nov.sp. ( fig. 10 , 30 , 34 ) 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, leg. C. Holzschuh & natives (Linz).

P a r a t y p e s: all from same location. Collection dates: 3 10.05.2011, 3 01.05.2011, 33 06.05.2011, 3 04.05.2011, 3 07.05.2011, 3 04.05.2011, ♀ 03.- 05.04.2014, ♀ 21.04.2012, ♀ 19- 21.04.2014 (Linz and coll. Riedel).

R e m a r k: The new species runs to Platylabus pseudogoliath HEINRICH in the key of HEINRICH (1974b: 109-112). It can be differentiated from P. pseudogoliath by the form of genal and hypostomal carinae, ivory flagellar rings in ♀♀ and the ivory color pattern of the head.

D e s c r i p t i o n:

♀

: Body length 11-12 mm. Flagella slender, bristle-shaped, with 38-39 segments; 1 st flagellomeres length 5.0x width, all flagellomeres longer than wide. Temples long, slightly and roundly narrowed behind eye, length 0.8-0.9x eye width. Distance of lateral ocelli to eyes c.1.2x their diameter. Head coarsely granulate, matte; frons above antennae smooth. Clypeus moderately convex, with rounded apical margin. Malar spaces long, length c.1.3x width of mandibular bases. Genal carinae joining hypostomal ones far from mandibular bases, but obsolete ventrally; genae ventrally impressed; hypostomal carinae lamelliform elevated.

Mesosoma with fine grey hairs. Notauli slightly impressed frontally; mesoscutum densely granulate-punctate, matte; mesopleura and metapleura finely rugose-punctate, matte. Coxal carinae absent. Scutellum moderately elevated, rugose-punctate, with complete lateral carinae. Propodeum with long-oval spiracles (length 3x width). Area basalis without lateral carinae. Area superomedia longer than wide, rectangular; costulae absent. Area petiolaris without distinct lateral carinae, with coarse transverse rugae. Outer dentiparal edges with small apophyses. Hind coxae densely rugose-punctate, without scopa. Hind femora densely punctate, length 4.7x height. Areolets quadrangular; nervuli interstitial or slightly postfurcal.

Metasoma amblypygous, oval, apex blunt. Petiolus wider than high. Postpetiolus moderately widened, width c.0.75x distance of apophyses, without dorsal carinae; median field slightly elevated, rugose. 2 nd tergite length 0.9x width. Thyridia very large, c.2.5x wider than their interval, interval 0.5x as wide as median field of postpetiolus. 2 nd tergite and basal 2/3 of 3 rd tergite densely punctate, centrally finely rugose, matte; caudal third of 3 rd tergite and following tergites with smoothened structure, shining. Ovipositor sheaths not surpassing metasomal apex.

Colour: Black. Scapes sometimes reddish ventrally. Ivory are stripes on flagellomeres 9/10-13, mandibular bases, narrow facial and frontal orbits, small spots on vertices, narrow stripes on outer orbits, hind edges of pronotum, spots on tegulae and on subtegular ridges, and apical spot on scutellum. Coxae and trochanters black; legs otherwise reddish; hind femora narrowly black at apex; hind tibiae black, sometimes subbasally with diffuse dark reddish shine; all tarsi blackish. Wings hyaline, pterostigmas dark brownish.

3: Body length 11 mm. Flagella with 37-38 segments; 1 st flagellomeres length c.4x width; tyloids on flagellomeres 10-18, long-oval, on basal 0.6 of their segments. Temples moderately narrowed behind eyes. Hind tibiae with reddish-brown subbasal rings. Structure and coloration otherwise as described for the ♀.

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

Platylabus occipitalis nov.sp. H o l o t y p u s: (♀) Taiwan, S-Nanton Co, Road No 21, Hosher, ca. 2335´N 12053´E, ca.

1000 m, 19-21.V.2001, leg. W. Schacht et al. (ZSM).

R e m a r k: This small taxon belongs to the group of Oriental Platylabus species with blackish mesosoma and dark metasoma. It is mainly characterized by the rugose and transversely striated occiput.

D e s c r i p t i o n:

♀

: Body length 6 mm. Flagella slender, slightly lanceolate, with 32 segments; 1 st flagellomeres length 4.0x width, widest flagellomeres 1.1x wider than long. Temples moderately and roundly narrowed behind eyes, length c.0.6x eye width. Ocelli small, distance of lateral ocelli to eyes 1.4x their diameter. Occiput and dorsal part of frons with coarse transverse rugose-striation, matte. Face and clypeus punctate; epistoma partly rugose. Clypeus moderately convex, with straight apical margin. Malar spaces long, length c.1.2x width of mandibular bases. Genal carinae joining hypostomal ones far from mandibular bases, but obsolete ventrally; hypostomal carinae slighty elevated (by diameter of apical palpomeres).

Mesosoma with fine whitish hairs. Sides of pronotum rugose-punctate, with some irregular longitudinal striae ventrally. Notauli slightly impressed frontally; mesoscutum densely rugose-punctate, matte. Mesopleura including specula and metapleura coarsely rugose-punctate, matte. Coxal carinae absent. Scutellum distinctly elevated, punctate, with complete lateral carinae. Propodeum with short-oval spiracles (length 2x width). Area superomedia as long as wide, rectangular, rugose; costulae absent. Area petiolaris without lateral carinae, confluent with areae posteroexternae, with fine and partly transverse rugae. Outer dentiparal edges dentiform, without distinct apophyses. Hind coxae densely rugose-punctate, without scopa. Hind femora densely punctate, length 4.3x height. Claws not pectinate. Areolets almost quadrangular, nervuli slightly postfurcal.

Metasoma amblypygous, oval, apex blunt. Petiolus wider than high. Postpetiolus moderately widened, width c.0.65x distance of apophyses, without dorsal carinae; median field slightly elevated, somewhat rugose basally, with smoothened surface apically. 2 nd tergite length 0.9x width; 3 rd tergite length 0.65x width. Gastrocoeli slightly impressed; thyridia slightly oblique, width 1.0x their interval. 2 nd and 3 rd tergites superficially punctate, finely granulate, more or less shining; following tergites with fine granulation, shining. Ovipositor sheaths slightly surpassing metasomal apex.

Colour: Black. Metasoma with dark reddish-brown suffusion; postpetiolus apico-medially and hind margin of 2 nd tergite reddish-brown; hind margin of 6 th tergite and complete 7 th tergite yellowish-brown. Ivory are stripes on flagellomeres 8-11, narrow facial and frontal orbits, short narrow stripes on outer orbits, and small spots on vertices opposite to lateral ocelli. Hind edges of pronotum, spots on subtegular ridges, frontal spots on fore coxae, and apical spot on scutellum yellowish. Coxae and trochanters black; legs otherwise reddish; hind femora at narrow apex and hind tibiae in apical 0.1 blackish; all apical tarsomeres brownish. Wings hyaline, pterostigmas ochreous.

3 and hosts unknown.

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

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. 26-31: Metasoma of (26) Apaeleticus rufopetiolaris nov.sp. HT; (27) Granulolabus maculatus nov.sp. HT; (28) Pagarenes rufocoxalis nov.sp. HT; (29) Platylabus flavomaculatus nov.sp. HT; (30) Platylabus laoticus nov.sp. HT; (31) Poecilostictus decoratus ssp. laoticus nov.ssp. 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.