Hybophorellus injucundus (WESMAEL)

Tereshkin, A. M., 2013, Taxonomic notes about ichneumon fly Coelichneumon torsor (THUNBERG 1822) and illustrated, Linzer biologische Beiträge 45 (1), pp. 913-927 : 919-927

Hybophorellus injucundus (WESMAEL) (Plate 3)

Amblyteles injucundus WESMAEL 1854 - Bull. Acad. Sci., Belgique 21: 119,.

Amblyteles duplicator: ROMAN 1923 - Entom. Monthly Mag. 59: 30,.

Hybophorellus duplicator: HEINRICH 1949 - Mitt. Münch. Ent. Ges. 35-39: 49-50,. Hybophorellus injucundus: PERKINS 1953 - Bull. Brit. Mus. (Nat. Hist.) 3 (4): 118.

Hybophorellus injucundus: HEINRICH 1962 - Syn. Nearct. Ichn. Stenop. 26: 563-564.

Hybophorellus injucundus: RASNITSYN 1981 - Opr. Faun. SSSR 3 (3): 624.

I n t r o d u c t i o n

Hybophorellus SCHULZ 1911 is a genus with uncertain taxonomic position in the tribe Ichneumonini ( HEINRICH 1962) . A number of signs point to belonging of the genus to Hoplismenina subtribe. Clypeus, convex almost the height of middle field of face, mandibles that are characteristic both for Hoplismenina and Platylabini too, highly elevated (especially at males) scutellum and developed teeth of propodeum are characteristic for Hoplismenina. A.P. RASNITSYN (1981), proceeding from amblypygous abdomen of females, conditionally placed the genus in the subtribe Amblytelina . However, amblypygous abdomen is also characteristic for oriental genus Amblysmenus HEINRICH (Hoplismenina) ( HEINRICH 1975; Fig. - TERESHKIN 1997). Proceeding from the named features, the point of view of D.S. YU and K. HORSTMANN (1997) about the genus belonging to Hoplismenina subtribe, should be considered well-founded.

M o r p h o l o g y

F e m a l e

F l a g e l l u m: Bristle-shaped, with 34-35 segments, moderately thick, first segment 4,4 times longer than the width at apex, segment 8 square from lateral; segments at a most part distinctly separated (differentiated) with white semiannulus on segments (6)7- 9(10), beyond it distinctly thickened and flattened ventrally.

H e a d: Head contour from front quite strongly and more or less uniformly narrowed downwards, slightly transverse, only 1,2 times wider than height; genae from front (malar space) 3,7 times shorter than height of an eye (0,3), visible from front on 0,2 from base of an eye; head contour from above transverse, 1,8 times wider than length on external contour, slightly sinuously narrowed backwards behind eyes (temples only just convex). Vertex from lateral linearly sloping from hind border of ocelli to occipital carina; temples long, in middle 1,1 times longer than longitudinal diameter of an eye, below middle almost parallel to hind margin of an eye (only just narrowed), at lower half obliquely striated; genae above abscissula slightly impressed; occipital carina sharp all round, from above strongly roundly impressed, but far not reach level of eyes and hind ocelli; hypostomal carina only just visible from lateral, meeting with occipital carina far before base of mandible; abscissula equal 0,2 of mandible base width; malar space 1,1 longer than mandible base width; mandibles narrow, parallel-sided at a most part, slightly broadened toward apex with two weak teeth, lower tooth shorter than upper one; clypeus convex approximately on height of middle field of face, 1,7 times wider than length, with straight front margin and distinct lateral corners, separated from face by deep impression; clypeal foveae large, deep; labrum equal by breadth to front margin of clypeus, rounded, rather long; middle field of face short, distinctly elevated, in middle 1,3 times narrower by breadth than lateral fields; antennal cavities short, quite deeply impressed, reach borders of eyes and far not reach front ocellus level, with distinct lateral tubercles and with weak tubercle between antennal fossae; margins of antennal fossae high elevated above face surface; ocelli of normal size, diameter of lateral ocellus 1,8 times lesser than distance from ocellus to eye; ocellar triangle distinctly elevated. Surface of clypeus with big deep smoothed punctures, polished between punctures, middle and lateral fields densely punctured with developed microsculpture, frons smoothly wrinkly-punctured; temples with developed microsculpture; malar space with rough microsculpture.

T h o r a x: Collar of pronotum from above short, with rounded front margin; transverse furrow of pronotum deep, narrow; pronotal ridge not swollen, narrow; pronotum impressed almost to upper margin; epomiae almost not expressed, only just higher then transversal wrinkles behind them; pronotal base gradually curved, slightly sinuous, rather strongly swollen; central part of pronotum with transversal wrinkles, upper third densely punctured, to slightly wrinkled. Mesonotum moderately convex, with equal length and breadth; notauli absent, only in a form of only just visible wrinkling at theirs place some different from adjoining surface; surface of mesonotum densely punctured, with microsculpture in a front part; lateral furrow of mesonotum sharp, deep; axillary tongue not expressed or only just visible expressed; subalarum high, narrow, not sharpened or only just visible sharpened from behind; speculum with sparse punctures; area of mesopleural fovea deeply and roundly impressed; mesopleural suture straight, deep, interrupted by sharp ribs; mesopleurae at bottom with smoothed bend; sternauli in a form of indistinct impressions; surface of mesopleurae at a most part densely punctured by big punctures, with slight microsculpture at a lower part; scutellum convex, from lateral distinctly elevated above postscutellum and gradually sloped backwards, laterally not carinated, its surface punctured by big punctures. Hind margin of metanotum with broad triangle projections opposite of lateral longitudinal carinae. Length of horizontal part of propodeum 2,5 times lesser than length of area posteromedia in middle; carinae of propodeum with exception of coxal carina expressed; costulae and lateral carinae of basal area weak; basal area short and deep with convex surface; area superomedia from horshoe-shaped to semioval, costulae behind middle; carina dentipara exteriores with sharp bend behind spiracles; areae dentiparae at apices with teeth; spiracles big, long, moderately broad, along external contour 2,5 times longer than width. Surface of propodeum in front half of horizontal part densely and roughly punctured, at hind part wrinkled; metapleurae roughly and densely punctured, without microsculpture.

L e g s: Moderately stout, hind coxae from below densely punctured, shining, without scopa. Claws rather narrow and long, smoothed, uniformly curved and slightly thickened at base.

W i n g s: Areolet big, pentagonal, symmetrical with wide base; stigma normal (not narrow and not broadened), dark; radial cell normal; radius almost straight, slightly curved only at apex; nervulus slightly postfurcal; ramulus distinct; all veins dark; membrane of wing hyaline. Front wing 1,4 times longer than body length.

A b d o m e n: Amblypygous, from above elongated-oval, tergite 7 only just protrude from under 6, sheath of ovipositor from above not protrude or only just visible; second tergite transverse, at apex 1,3 times wider than length in mddle. First tergite from lateral with distinct, but smoothed bend between petiolus and postpetiolus, from lateral sharply bordered by carinae and with strong transversal ribs between them; from above petiolus sharply broadened to triangular postpetiolus; distance between spiracles 1,6 times more than distance from spiracles to hind margin of tergite; middle field of postpetiolus distinctly expressed but slightly elevated at hind part, almost two times wider than lateral fields; its surface delicately longitudinally-striated, lateral fields sinuously-wrinkled. Gastrocoeli small, slightly impressed, short; thyridia weak, but distinct 1,5 times narrower than interval between them; lunulae distinct, quite big, situated at hind third of tergite; surface of second tergite including interval between gastrocoeli very densely punctured by big, almost merged punctures; interspaces between punctures at hind part of third tergite slightly coriaceous, tergite 4 with weak superficial puncturation, others tergites smooth. Hypopygium not compressed from sides, triangular from below and from side, reach apices of ovipositor sheath, with membranous hind margin, without bunch of long stiff bristles at apical part; sternites 2-3 strongly unsclerotized with longitudinal fold.

C o l o r a t i o n: Body black, apex of first tergite and tergites 2-3 of abdomen red, scutellum reddish. Coxae and trochanteres of all the legs and most part of hind femora black, other parts of legs red.

S i z e: Body length: 10,0; front wing: 7,2 mm.

M a l e

Habitually, males are more slender with more long and thin legs and flagellum.

F l a g e l l u m: Slender, bristle-shaped, with 36 segments, with big broadly-oval tyloides on segments 3-22 and white semiannulus on segments 11-15; segments of flagellum not ribbed, distinctly differentiated, especially at apical half. Flagellum equal by length to front wing.

H e a d: Same as of female. Temples from middle more distinctly narrowed downwards. Striation of genae indistinct, more smoothed than of females. Palapae more long and slender.

T h o r a x: Epomiae of males, in contrast to females, sharp, pronotal base more swollen, pronotum without transverse wrinkles behind epomiae. Scutellum sharply elevated, very high; area superomedia almost square, rounded in front, costulae fully absent.

L e g s: Long and slender.

A b d o m e n: Middle field of postpetiolus more slightly elevated, punctured by smoothed punctures with only just visible wrinkling.

C o l o r a t i o n: Scutellum entirely black, tergites 2 and 3 medially darkened. In the rest as at females.

S i z e: Body length: 11,0; flagellum: 8,5; front wing: 8,5 mm.

Acknowledgements

The author is deeply grateful to Dr. Matthias RIEDEL for help in identification of material ( Coelichneumon torsor ) and to Dr. Dmitriy KASPATYAN for granting of materials for research ( Hybophorellus ) from Zoological institute RAS (St. Petersburg).

Zusammenfassung

Vorliegende Arbeit behandelt die Systematik und Ökologie von Coelichneumon torsor ( THUNBERG 1822) ( Hymenoptera , Ichneumonidae , Ichneumoninae ) an ihrer südlichen Verbreitungsgrenze. Die morphologische Abgrenzung zur nahe verwandten Art C. haemorrhoidalis (GRAVENHORST 1820) wird diskutiert, die Unterschiede werden grafisch illustriert. Ebenso wird Hybophorellus injucundus ( WESMAEL 1854) in beiden Geschlechtern beschrieben und in Bildern dargestellt.

Literature

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Author's address: Alexander M. TERESHKIN

Mendeleeva 5-14

220037 Minsk, Byelorussia

E-mail: [e-mail]

Legends to color plates

Plate 1: Coelichneumon torsor (THUNBERG) ,. Plate 2: Coelichneumon torsor (THUNBERG) ,.

Plate 3: Hybophorellus injucundus (WESMAEL) ,.