Genera insectorum

발행: 1902년

분량: 495페이지

출처: archive.org

분류: 미분류

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GENERA INSECTORUM ORTHOPTERA

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ORTHOPTER A

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ORTHOPTER A

INTRODUCTION SUB AM. PROPHA AN OPSINAE

INTRODUCTION

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ORTH PTER A

lia classi fication the he ad ast 1 iis severat i eatures of ta Xonomi C impol tan Ce. the si ape and Sige of tho head iis eis besing used in sonae cases for specific differentiation. The m Ost important Characters of tho head , howe ver as used in the dotem ination os genera and higher groups lie in ille sit ape and positionos tho fastigium of the vertex; that of the faCe, the poSition of the o CCiput and the place of insertion ofilae antennpe. In Some gro aps tiae fa Stigium of the Vertex is horigontal and osten considerablv extended

Plato, Fig. l ), while in others it is in early Vertical and rounde is Plate, Fig. 2); the wid th of the vertox

usual as compared willi the basal segment of the antennae i S a JSO used, espe Cialty in specific de tormi nation. The faciat fastigium, or fastigium of the front . is hi Sed in Connection with tlio fastigium of the VerteX as a Syn OpitC CharaCte T. the feature u Suali 3 Con Sidere i being whether they to uch or aro distant

the subfamilies, the Hi ad 3 por in pu and Saginae. In these groups the o CCipiat is elevat sed Considerabit ab ove the fastigium of the vertex vhile in most Others it is but litile elevat ecl. In the group here theo ciput is much eleva ted the antennar a re inserte ii below the e3 es, or bet e en their lower bordei S. an in ea re the Cl3 Peal suture than to the top of the occipiat Plate, Fig. 2 lae si Zo and Shape of the e vesand the structure of the mouili Paris are also os importan Ce in Classi si Cation.

transverse sui Ci on the pro notat dis the de velo sement of the laterat iobes and the generat si ape of the prono tum , whether Shori and posteriori y Obtu Se Plate, Fig. l Bl, or long and posteriori 3 pro dia Ced, ora cute Plate, Fig. l G) are Charactei S mu Ch u Sed in Classification, and the absen Ce Or preSen Ce of Spineson the prosternum is a Potnt of mu Ch importan Ce. The form of the meso- and meta sternal lobos and of the anterior border of the meSOSternum a re Chara Cle PS considerabri u sed as a re also those furnished by the piis. or foveolae, Os both the meSO- and motas torni. The abdomen is not produCtive of many Charactea S, with the e XCeption Os the genital Organs. Here, howeVer, are Often found Chara Clers of great importa DCe to the Ab stomati St, the ovi positor

of the fe male and the cerci and the supra anal and subgon ital plates of both se Xes Often pro Vingin valvabie for generi C and specific differentiation. The logs furnish the most usod characters for the definition of gro aps. The shape of the tarsi.whether depressed or compressed, and the presen Ce or absen Ce betaeath of palis, Or pulvilli, a re important characters. The number of segments in the largi of the Locustidae is t3 picatly four, but in one genus os Raphidophor in se the fore and hin i ta 1 Si are tetra merous, and in the aberrant subfami ly ProphalangOpsinae ali the tarsi are three-jo in te i. The hi si and se conii tarsal segments are hi sed in the definition of the subfamil3 Phaneropterinae, here bo ing smo oth lateralt 3 Plate, Fig. B 'hile in moSt gro aps the are sui Cate lateralty Plate, Fig. T). The forna and armature of the tibiae and femora astor i m ny

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3 2 I.

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8. Prosternum tincti med

the antenna. Dever Sulcase

Subiam. PHASMODIN E. Sublam. MECONEMINAE.

Subtam. SAGINAE.

ubium. A GRAECINA . Subsam. COPI PHORINAE 2 . Subiam. DECTICINAE . Subfam. PHASGON URINA . Sublam. ERADYPOR IN F.

ii I M low laruniter in the use of the soramina in this connection. They do not constitute a destrabie diagnostic character at this plaCE aS eaChalternute countains a number of forms whicli reatly tali under the opposite. 2ὶ The laWs of nomen lature necessitate the relegation of the genera Nirhfrion and Anis fera to the synonymy under Consce/haμS. Thisunsortunate but unavoidable change resulis in the old subfamily Conocephalinae being renamed Copiphorinae, while the subfami ly Xiphidinae isto be noWknown as Conocephalinae.

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Characitens. - Head AS broact as the anterior margin of the pro notum. Uertex bro ad, broaderthan the basal segment of the antennae, Strongly declivent. EVes moderate, OVal, prominent; OCelli Pre Sent. three in number. Antennae moderately stender, the joinis Aliori beyond the largor basal one. Mandi bles Compressed, dentate; maxillary palpi long the terminal segment tho longest. Pro notum sm OOth, SI Vollen in the posterior three-fourtiis, the anterior portion parallel, the anterior margintruncate, the Posterior margin rounded: laterat iobes smali; roundi3 inSerted; anterior tra SVerSe Sul Cusprominent, posterior One absent. Prosternum unarmed but provided on ea Ch si de to wards the coxae ruith a prOCess, Whicli is rounded When Viewed frona the Side. Abdomen moderately large and plum p; subgenitalptate of the malo Concave illi long SP Ollen StyleS. Legs Stende T. antorior and intermediate ones SCarCely compressed, the femora UDarmed; tibiae quadri Carniate, the posterior ones With an apicat spine ab ove and below on both sides; anterior tibi se Scarcely dilated basal the foramina opem, Oblo g, mesialty narrowed; tarSi Sub CompreSSed, tetrameΓOUS, the fit si joint shortor than the third. sulcate belo tho se cond joint minute. The tibi se a re but litiles horter than the femora and are sulcate on eaCh fide, Spined ab OVe and below.

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