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GENUS - HETEROPTERYX. G.R. Gray, Westw. (Mon. Phasm.)
HETEROPTERYX DILATATA.
PLATE XXXII, FIG. 1.
(Heteropteryx dilatata, Parkinson, Linn. Trans. iv, pl. XVIII. Westw. Mon. Phasm. p. 82.)
(SYN. Heter. Hopei. Westw. Trans. Ent. Soc. Lond. Ser. iii. vol. ii. Proc. p. 16.)
Lata subdepressa: mesothorace conico: fulvo-lutea, (viridis? dum viva) tegminibus opacis pallide viridibus, alis puniceis; spinulosa, spinis parvis; capitis vertice spinis octo coronato; mesonoto in medio partis postica spinis duabus minutis armato; parte detecta supera oviductus segmento nono dorsali abdominis fere duplo longiori, elongato-lanceolata angusta, sensim ad apicem attenuata, apice furcato. (Fœm.)
Long. capitis lin. 6; proth. lin. 7; mesoth. lin. 9; metath. line. 9; abdom. segm. 6-basal, lin 27; segm. 3-apical. lin. 11; oviduct. lin. 6; = long. tot. circ. unc. 6½.
Habitat; -? In Mus. Hopeiano Oxoniæ.
Closely allied to H. Grayii (Westw. Mon. Phasm. pl. XXX. fig. 3), but much larger, though with the spines much smaller; the tegmina and wings extend to the extremity of the second dorsal segment of the abdomen. The two anterior discoidal spines of the prothorax are smaller than the four posterior ones forming the posterior row, which are much more numerous and still smaller in H. Grayii. The mesothorax has the square central dorsal part armed with three marginal spines on each side, three pairs of distant spines on its disc, and only two approximatory spines in the place of the posterior coronet of spines in H. Grayii; the tegmina are comparatively larger, and extend to the extremity of the second abdominal segment.
The sides of the body and the femora are much less strongly spined than in H. Grayii, but the tibial spines are very robust. The exposed portion of the dorsal piece of the ovipositor (fig. 1 a, g) is elongate-lanceolate, narrow, gradually pointed to the tip, where it is slightly furcate, and is half as long again as the terminal dorsal segment (*). Fig. 1 a represents the four terminal segments of the body of the female lying on its back, with the parts of the ovipositor raised and separated, and fig. 1 b the ventral surface of the ovipositor, the lettering of the different parts being the same in both figures; the * representing the ninth or terminal segment of the abdomen.
a represents the large boat-shaped piece arising at the base of the seventh segment, and shutting in the other parts when at rest; b, a pair of curved horny blades, each arising from a broad basal piece, c; d, two shorter horny bifid plates, which unite with b to form a concave bed for the reception of the larger eggs; e, the under lining of the basal part of the last segment; f, a pair of straight horny conical appendages, at the base of each of which is seen a minute conical style; g, the under side of the upper portion of the sheath of the ovipositor, and † the entrance of the anus.
I had named the specimen of this species, figured in plate XXXII, in memory of the late Rev. F.W. Hope, the munificent founder of the Chair of Zoology in the University of Oxford, to whom these curious insects were especial objects of interest, having never seen the original type of H. dilatata, the Hopeian specimen being in spirits and discoloured. The Saundersian Collection, however, now added to the Hopeian Museum by the liberality of Mrs. Hope, contains a dried specimen, and has enabled me to identify the species.
HETEROPTERYX CASTELNAUDII.
PLATE XXXII, FIG. 3.
Obscure lutescens, fusco-variegata: capite postice elevato-conico utrinque spinis armato, coronaque e spinis sex (duabus anticis minoribus) formata terminato; antennarum articulo basali depresso, secundo brevi, tertio quarto longiori; apicali longo1; prothorace subquadrato parce spinoso; mesothorace dorso medio oblique elevato lateraliter spinoso, spina ultima laterali ad basin tegminum rudimentalium majori; lateribus valde dilatatis et serratis; metanoti lateribus valde rotundato-dilatatis serratis, dorso alis duabus rudimentalibus instructo, spinis duabus dorsalibus; segmentis quinque basalibus abdominis ad latera dilatatis, margine spinosis; pedibus brevibus crassis spinosis, femoribus omnibus ante apicem supra lobo angulato instructis; tibiis posticis intus spinis validis curvatis armatis.
OBS. - Insectum vix omnino declaratum.
Long. corp. unc. 2¼.
Habitat; Tringany (Comte de Castelnau). In Mus. Hopeiano Oxoniæ.
GENUS - EXTATOSOMA. G.R. Gray.
EXTATOSOMA BUFONIUM.
PLATE XXXII, FIG. 2.
Fulvescens, brunneo-variegata: capite postice supra conico valde spinoso; antennis brevibus, articulis tertio ad nonum dilatatis, 10-16 alternatim longioribus nigris et brevioribus albidis (fig. 2 b); apicalibus 4 albidis gracilibus, ultimo longiori; mesonoto lateribus postice dilatato rotundatis spinosis, spinis duabus in medio antice, coronula spinarum postice armato; metathoracis lateribus dilatatis, dorso in medio valde spinoso et postice spinis foliaceis laciniatis armato; segmentis sex basalibus abdominis, præsertim quarto et quinto, lateribus foliaceo-dilatatis spinosis, dorso spinis foliaccis laciniatis erectis; pedibus brevibus crassis, lobis laciniatus numerosis spinisque instructis; tibiis omnibus absque membrana marginis interni; lobis conicis interdum bifidis externe armatis (fig. 2 a caput, pro- et mesothorax e latere visa).
Long. corp. unc. 1 5/6.
Habitat; Australia. In Mus. Hopeiano Oxoniæ (olim Saunders).
GENUS - CEROYS. Serville.
CEROYS LACINIATUS.
PLATE XXXII, FIG. 4.
Fusco-luteus, spinosissimus: capite utrinque lobo magno membranaceo laciniato armato; antennis gracillimus circiter 35-articulatis, articulis alternis (in medio antennarum) brevioribus et ad apicem paullo incrassatis; prothoracis dorso utrinque serie spinarum brevium armato; mesonoti dorso duplici serie spinarum laciniatarum, lateribusque lobis magnis foliaceis spinosissimis, serieque transversa postica spinarum minorum (ut in metonoto et segmentis abdominalibus); metonoti dorso spinoso lateribusque spinis compositis armatis; abdomine segmentis 5 basalibus dilatatis, spinis numerosis in seriebus transversis dispositis, armatis, omnibus (tribus ultimis exceptis) utrinque lobo magno subrotundato membranaceo valde sinuato et laciniato instructis, magnitudine e segmento tertio decrescenti; pedibus triquetris longis gracilibis, lobis numerosis ex angulis femorum et tibiarum prodeuntibus membranaceis, magnitudine diversis, in medio femorum majoribus, his multi-sinuatis; tibiis 4 anticis margine interno membrana trigona, posticis 2 tribus minoribus instructis.
Long. corp. unc. 3.
Habitat; Nicaragua. In Mus. Britann., Hopeiano Oxoniæ, et W.W. Saunders (olim).
1 The intermediate joints of the antennæ in the unique specimen in our Museum have been injured, so that I am not clear as to their real length. They were, however, probably longer than represented in my figure.
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© 1874 John Obadiah Westwood, and now expired.
Page images, retouching, HTML mark-up and typographic arrangement Copyright © 2003 Peter Miller This page was last changed 15-Sep-2003. |
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