REHN AND HEBARD 97 



BRACHYINSARA new genus 



Genus monotypic. Genotype — Brachijinsara magdalenae new 

 species. 



The present genus is a member of the Phaneropterinae and of the 

 group Insarae, and is known only from Magdalena Island, Lower 

 California. It shows nearest relationship to the genus Insara, 

 from which it differs in the peculiarly irregular and morq sulcate 

 fastigium of the vertex, the peculiarly shaped lateral margins of 

 the dorsum of the pronotum, the lateral lobes of the pronotum, 

 which in transverse section are more diverging ventrad, the aborted 

 tegmina and concealed rudimentary wings and the striking bi- 

 lobate disto-dorsal segment of the male abdomen. Closer relation- 

 ship to the second section of the genus Insara, (to which I. elegans 

 belongs) is shown in Brachijinsara by the bispinose genicular lobes 

 of the cephalic and median femora and the subgenital plate of the 

 male with lateral margins produced in non-articulate knobs. 



Generic Description. — Fastigium of vertex narrow, compressed 

 (particularly so dorsad) ; subhorizontal, Imt with dorsal surface on 

 three distinct levels this caused by there being two distinct steps 

 on the dorsal surface; dorsal surface very decidedly sulcate medio- 

 longitudinally ; fastigium of vertex in contact with facial fastigium, 

 the two presenting a flat cephalic surface, their lateral aspect pre- 

 senting an outline which at the juncture of the dorsal and ceph- 

 alic surfaces presents an angle of a little less than ninety degrees. 

 Antennae subcrassate proximad. Lateral margins of dorsum of 

 pronotum decidedly liiconstricted. Tegmina aborted, wings rudi- 

 mentary. Abdomen much dilated, dorsal segments of same weakly 

 acute-angulate produced mesad. Disto-dorsal segment of male 

 abdomen bilobate. Cephalic tibiae with proximal extremity swol- 

 len, narrowing rather gently below tympanum, which organ is open 

 on both sides, median tibiae slightly expanded proximad. 



Brachyinsara magdalenae now species - (Figs. 22 and 31.) 



Type.^ d" ; Magdalena Island, Lower California. ISIarch 1889. 

 (Chas. D. Haines.) [Hebard Collection.] 



Description of Type. — Size medium for group, form very robust. Head 

 with greatest width contained about one and four-fifths times in depth; 

 eyes globose, strongly exserted, much less in length than infra-ocular por- 

 tion of the genae. Pronotum with dorsal length c(iual to the greatest 

 (caudal) dorsal width; dorsum of pronotum in general deplanate, slightly 



TRANS. AM. ENT. SCO., XL. 



