Spilocrypius.'] BRITISH ICHNEUMONS. 27 1 



I. incubitor, Strom} 



Ichueumon incubitor, Strom, Trondj. Selsk. Skr. 176S, p. 348, 9 fw^rLinn.). Ctyptiis 

 incubitor, Gr. I. E. ii. 590; Ste. 111. M. vii. 291, 9 ; llolin^r. Sv. Ak. Handl. 1854, 

 p. 52; Tasch. Zeits. Ges. Nat. 1865, p. 104, excl. i ; Tschek, Verh. z.-b. Ges. 1870, 

 p. 415, (J 9 . C. pygoleucus, var , Gr. I. E. i. Suppl. 702 ; Tasch. Zeits. Ges. Nat. 1865, 

 p. 103, var. I, (J. Spilocryptus incubitor. Thorns. O. E. v. 502 et xxi. 2366 (part) ; </. 

 Krisch. Schr. Nat. Ges. Danz. 1881, p. 334. Var. brachypt. At^rothereutes batavus, 

 Voll. Tijds. V. Ent. xvi. p. 209, pi. ix. fig. i ; Pinac. pi. xxxvii. tig. 2, 9 • 



Head moderately narrowed and a little rounded posteriorly with the 

 face transverse ; cheeks and temples narrow, the latter somewhat flat ; 

 frons deplanate, clypeus slightly prominent, laterally depressed, aj)ically 

 sub-compressed and impressed ; of $ with internal orbits usually narrowly 

 white, of S with face except sometimes a cordiform mark, orbits, part of 

 mandibles and the mouth white. Antennae somewhat slender, filiform ; 

 of $ infuscate, with basal flagellar joints fulvous and the central ones 

 white ; scape of $ fulvidous beneath. Thora.x black ; mcsonotum niti- 

 dulous and not very closely punctate ; metanotum not coarsely but very 

 closely punctate, with petiolar area basally incom[)lete and the lateral areae 

 entire ; spiracles small and circular ; apophyses obsolete in ,^ , acute in 9 ; 

 of S with pronotum, callosities before and beneath radix, and usually 

 marks in the petiolar area, white. Scutellum black ; of $ entirely, as 

 well as the post-scutellum, white. Abdomen finely punctulate, hardly 

 alutaceous, of 9 broader than the thorax and oblong-ovate, of S narrower 

 and linear-fusiform ; black, with second and third segments, apical half of 

 first, and the fourth mainly or basally or laterally at the base, red ; the 

 fifth mainly black ; seventh, and often in $ the sixth, apically white ; S 

 with thyridii, petiole and apex of post-petiole flavous-white ; post-petiole 

 convex, glal^rous and scarcely broader than long, with the apical angles 

 sub-obtuse, of ? canaliculate and gradually a little dilated apically, 

 longitudinally foveate basally ; second segment with fine and transverse 

 aciculation ; terebra a little shorter than half abdomen, distinctly hastate. 

 Legs slender and red ; only the anterior coxae and trochanters black ; 

 hind femora at apex and their tibiae, excepting their white basal band, 

 black ; hind tarsi centrally paler in ? and broadly white, together with 

 nearly the whole of the anterior coxae, trochanters and calcaria, in S. 

 Wings hyaline, with a slightly darker central fascia ; radius apically straight 

 in ? , slightly curved in S ; radix and tegulae white, latter of 9 black ; 

 areolet pentagonal, moderately convergent above, not quadrate ; nervelius 

 intercepted obviously below its centre. Length, 8-10 mm. 



The female described by Thomson, who confuses this species with 

 S. cimbicis, differs from Gravenhorst's description only in the very narrowly 

 white internal orbits, the black anterior coxae and basally black anterior 

 femora. 



This species may be known from .S". cimlncis by the conformation of its 

 clypeu.s, which is, in both sexes, prominent and not on the .same plane as 

 the face ; the female has all the coxae and the base of the antennae red, 

 the wings clouded, the abdomen brf)ader than tlie thorax and the terebra 



• Ttiomson says (hat Linn(5's Uhncumon iiiciibilor is referred by the older aiitlinrs (Palnian, 

 Ljunf^h and Zctterstodt) to this spccios, and he conscciiieiitly cites Gravonhorst as the author o( 

 linrichiteumon inciibilnr (cf. Ichii. Brit. i. go). Gravciiliorst, however, is most explicit that tlic 

 Biirichtienmoii is l.iiiiie's species, and the Sf'iloctyf'liis that of " Stroeni Norskc Selsk. .Skr iv. p 3(8, 

 n. 65 (hiiiiil Ichii. iniuhitor aucl.l." Thomson ailds "Troli>;en ar C. cimbuis (Tschek) s.iinma art," 

 but Tschek is at considerable pains to indicate the distinction between his species and ttic present. 



