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40 BRITISH MOTHS 
SPECIES 7.—TROCHILIUM SPHEGIFORME. 
Plate vii. fig. 5. 
Synonymes. — Sesia Sphegiformis, Fabricius; Wien Verz.; ; Esper; Haworth; Villars. 
Vieweg ; Zetterstedt (Faun. Lapp. p. 918). ZEgeria Spheciformis, Steph. Mlust. H. 1, pl. 11, fig. 1. Dun. 
Trochilium Sphegiforme, Newm. can, Brit. Moths, pl. 13, f. 3. Wood, Ind. Ent. t. 4, f. 27. 
Sesia Spheciformis, Laspeyres; Borkhausen ; Ochsenheimer ; Dal- Bembecia Spheciformis, Hiibner (Verz. bek. Schm.). 
man (Zyg. Suec. 218.4).  Hiibner, Sph. fig. 77 and 78. Ernst ; Sphine Ichneumoniformis, Borkhausen. 
This rare species measures an inch in the expansion of its fore wings. The body is of a blue-black colour ; 
the palpi are black above and yellow beneath, with the tip blackish ; the antenne are black, with a whitish or 
yellowish bar on the upper side, near the tip. The thorax has a lateral yellow line; the breast has also a 
large lateral yellow patch. The abdomen has a spot at the base, on the upper side of the hind margin, and the 
third segment yellow. (Hiibner and Curtis represent the basal spot as forming a transverse bar.) The fan tail is 
broad and black. The fore wings have the margins and transverse mark and tip blue or brown black ; the tibiz 
are black, with luteous spurs, the hind pair yellowish on the inside ; the tarsi yellow dotted with black. The 
perfect insect is found in woods in June and July, and the larva is described by Laspeyres as feeding on the wood 
of the Birch. It is very rare in this country, a few specimens having been taken in the woods to the north of 
London. Mr. Weaver informs me that he took one flying in the New Forest, which at first sight he thought 
was a large ichneumon. 


SPECIES 8.—TROCHILIUM ANDRENZ FORME. 
Plate vii. fig. 10. 
Synonymes.—Sesia Andreneformis, Laspeyres, Ses. Europ. p. 20, | Ai geria Allantiformis, Stephens, Ill. H. 4, p. 385. Wood, Ind. 
fig. 7, 8. * | Ent. pl. 4, f. 21. 
Trochilium Allantiforme, Newman, Ent. Mag. 1, 79. 
This species measures 103 lines in the expansion of its fore wings. It is blue black, with the palpi yellow on 
the under side ; the antenne entirely black ; the thorax black above ; the abdomen black, with the hind margins 
of the third and fifth segments pale yellow ; the fan tail black, with the middle orange ; the legs black ; the tibie 
sprinkled with a few yellowish hairs; the tarsi fulvous, with the tips blackish ; the fore wings with the veins, 
margins, and transverse fascia black. 
A male specimen of this species was taken by Mr. Chant in a wood near Greenhithe, in July 1829, from 
which my description was shortly afterwards taken. I mention this because Mr. Newman, whose description 
was also taken from the same individual (which he states to have been the only British specimen he had ever seen 
or heard of), describes it as having only one white belt. It is, however, represented by Wood as having two ; 
thus confirming my note made several years before that work was published. It is on this account that I refer 
it with scarcely any doubt to the 8. Andreneformis of Laspeyres. Mr. Newman, however, suggests that this 
may be the male of the S. Scolizeformis of Borkhausen and Laspeyres, but that is one of the largest in the genus, 
differing, moreover, in a number of its characters. 
Mr. Stephens states that he possesses a much-injured specimen, found near Dover. 
b. Abdomen very slender in the middle in the males, and marked with a single red belt. (Conopia.) 




