. Hymenoptera ... ge. Both hemispheres. PONERA. 89 ^ . Head without the mandibles broadh- oval, broader pos-teriorly than in front, the sides convex; mandibles triangular,with a broad dentate masticatory maigin; clypeus narrow, pro-duced posteriorly into an angle betv\een the antennal carinae, itsanterior margin transverse; antennal carinae short, laminateanteriorly, covering the base of the antennae ; antennae lU-jointed,flagellum clavate, the 1st joint of the latter very much longer andthicker than the 2nd joint; eyes minute or wanting, ocelli narrower than the head, convex ab
. Hymenoptera ... ge. Both hemispheres. PONERA. 89 ^ . Head without the mandibles broadh- oval, broader pos-teriorly than in front, the sides convex; mandibles triangular,with a broad dentate masticatory maigin; clypeus narrow, pro-duced posteriorly into an angle betv\een the antennal carinae, itsanterior margin transverse; antennal carinae short, laminateanteriorly, covering the base of the antennae ; antennae lU-jointed,flagellum clavate, the 1st joint of the latter very much longer andthicker than the 2nd joint; eyes minute or wanting, ocelli narrower than the head, convex above, the pro-meso-and meso-metanotal sutures distinct above, but the latter notemarginate, nor the metanotum depressed below the level of thepro- and mesonotum, nor compressed, but truncate posteriorly;legs moderately long and stout. Pedicel one-jointed ; node some-what thick, flat, or slightly convex in front, rounded above,vertically truncate posteriorly ; abdomen comparatively massive,and as lone as the Fig. 46.—Poncra coarcfata, ^ . (5 . Very sinnlar to the ^ ; eyes larger ; ocelli present; pronotumforming part of the dorsum of the thorax ; mesonotum of moderatesize, rou]ided, convex; metanotum short, posteriorly truncate;legs, node of the pedicel, and abdomen similar to those of the ^ . I have followed Prof. Emery in restricting the genus Ponera tothe smaller species resembling the type, P. coarctata, in the shapeof the thorax. Key to the Sjiecies. A. ^ entirely blind P. ceijlonetisis, p. 90. B. ^ possessing more or less minute eyes. a. IDark castaneous brown; thorax above dis- tinctly rounded and convex, not flat or depressed P. truncata, p. 90. b. Light testaceous yellow; thorax above distinctly flat and depressed.«. Flagellum of antennae much thickened towards apex ; penultimate joints twice as broad as long , P. (jleadoici, p. 91. //. Plagellum of antenna; not so much thickened towards apex; penultimate joints longer or as long as broad P. coufims, p. fU. 9
Size: 2648px × 944px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
