Coelichneumon (Intermedichneumon) scopator, Riedel, 2017

Riedel, Matthias, 2017, Contribution to the Ichneumoninae (Hymenoptera, Ichneumonidae) of Southeastern Asia: 3. Heresiarchini, Linzer biologische Beiträge 49 (1), pp. 895-917 : 905-906

Coelichneumon (Intermedichneumon) scopator nov.sp.

Holotypus: ♀ Laos, Hua Phan Prov., Phon-Pan, Umg. Ort Ban Saleui, 20°13´30´´N 103°59´26´´E, 1350-1900 m, 27.06.2013 KJa, leg. C. Holzschuh & natives (Linz).

Paratypes: ♀ Laos, Hua Phan Prov., Ban Saleui, Phon Pan-Mt, 20°13´30´´N 103°59´26´´E, 1350-1900 m, 08.05.2010, leg. C. Holzschuh & natives (coll. Riedel) ; 3 Laos, Hua Phan Prov., Phon-Pan , Umg. Ort Ban Saleui, 20°13´30´´N 103°59´26´´E, 1350-1900 m, 02.07.2013 KJa, leg. C. Holzschuh & natives (Linz) .

D e s c r i p t i o n of ♀:Body length 12-14 mm. Flagella moderately lanceolate, with 43 flagellomeres; 1 st flagellomeres (without anellus) length 2.7x width, 13th segments square; flagellomeres beyond the middle attenuated, widest ones 1.6x as wide as long. Temples strongly and roundly narrowed behind eyes ( fig. 3 ). Clypeus, face and frons with rather scattered punctures. Genae with very scattered punctures. Distance of lateral ocelli to eyes about 1x as long as their diameter. Malar spaces 0.7x as long as the width of mandibular bases. Genal carinae reaching the hypostomal ones close to mandibular bases.

Mesosoma with whitish hairs. Notauli impressed on frontal fifth of mesoscutum. Mesoscutum with rather dense punctures, shining; mesopleura and metapleura punctate, speculum smooth. Scutellum moderately elevated, wider than long, without lateral carinae, with scattered punctures Propodeum rounded, areae basalis and superomedia confluent; area superomedia wider than long, hexagonal, costulae in the center ( fig. 12 ). 1 st lateral areae of propodeum punctate, area petiolaris with coarse rugose puncture. Hind coxae densely punctate, with strong scopa, length 1/3 of coxae. Hind femora with scattered to very scattered punctures, somewhat denser in the apical third, length 4.2x height. Areolets pentagonal, frontal distance of intercubiti about 2x their width, nervuli postfurcal.

Metasoma ( fig. 18 ) strongly oxypygous. Postpetiolus strongly widened, lateral fields about as wide as median field, the latter coarsely aciculate. Thyridia oblique, very wide, about 2x as wide as their interval. 2 nd tergite length 0.75x width, length of 3 rd tergite 0.55x width. Tergites 2-4 with dense punctures and fine granulation, centrally with longitudinal rugae and striae, tergite 5 superficially punctate, following tergites almost smooth and strongly shining. Seen from dorsal, ovipositor sheath c.0.7x as long as the seventh tergite.

Color: black. Cream-yellow are stripes on flagellomeres 7-15, palps, mandibular bases, clypeus, face except M-shaped black central spot, genae, complete orbits, lateral spots on scapes, propleura, anterior and upper margins of pronotum, two longitudinal stripes on mesoscutum, subtegular ridges, spots on tegulae, lower mesopleura behind epicnemial carinae, ventro-apical spots of mesosterna, carinal triangles, caudal 2/3 of metapleura, sides of scutellum, postscutellum, spots on dentiparal areae, large posterolateral spots on postpetiolus and tergites 2-5 (medially confluent on tergite 5), narrow membraneous apical margins of tergites 6 and 7. Fore and middle legs yellowish, femora and tibiae with brown stripes caudally, fore and middle tarsi brown. Hind legs black, hind coxae with small dorsal and ventro-apical yellow spots, hind femora chestnut-brown basally, becoming blackish in the apical 2/3, hind tibiae with subbasal ivory rings. Pterostigmas blackish-brown.

D e s c r i p t i o n of 3:Body length 11 mm. Flagella with 38 segments; tyloids linear, on flagellomeres 9-19. Hind femora length 3.9x height, punctate, with scattered punctures basally and ventrally. Tergites 2-5 with coarse puncture, tergites 2-4 with central aciculation; tergites 6-7 with finer, but distinct puncture. Structure otherwise as in ♀.

Color: black. Pale yellow are palps, mandibles except teeth, clypeus and face completely, orbits (with interruption between vertex and frontal orbit), two short mesoscutal stripes, and small posterolateral spots on tergites 1-5. Tergites 6 and 7 completely black. Hind femora black. Color otherwise as in ♀.

R e m a r k: The combination of both sexes remains questionable, since there are considerable differences of the structure and coloration of the metasoma: the metasoma of the 3 is stronger punctate than in the ♀♀ and the yellow coloration is reduced in the available 3. However, structural features and color patterns of head and mesosoma are comparable.

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

Figures

Figs 1-4: Heads seen from dorsal of: (1) Aglaojoppa parafemorata nov.sp. HT, (2) Coelichneumon fulvipennoides nov.sp. HT, (3) Coelichneumon scopator nov.sp. HT, (4) Coelichneumon superomediae nov.sp. HT.

Figs 8-13: Propodeum of ♀♀ of: (8) Aglaojoppa parafemorata nov.sp. HT, (9) Coelichneumon fulvipes (CAMERON), (10) Coelichneumon fulvipennoides nov.sp. HT, (11) Coelichneumon hopponsis (MATSUMURANA), (12) Coelichneumon scopator nov.sp. HT, (13) Coelichneumon superomediae nov.sp. HT.

Figs 14-19: Metasomal tergites of ♀♀ of: (14) Aglaojoppa parafemorata nov.sp. HT, (15) Coelichneumon fulvipes (CAMERON), (16) Coelichneumon fulvipennoides nov.sp. HT, (17) Coelichneumon hopponsis (MATSUMURANA), (18) Coelichneumon scopator nov.sp. HT, (19) Coelichneumon superomediae nov.sp. HT.