. Guide to the insects of Connecticut . an pleuralis 4. Abdomen black, or with apical margins of dorsal segments narrowly pale; second dorsal abdominal segment polishedor finely punctate; legs entirely reddish, without a paleline in front of tegulae. Length mm. (female and male) propinquus Abdomen mostly reddish, black at base, or black at base andapex. Length 7-8 mm. (female and male) semirufus 5. Mesopleurae, and usually most of the thorax, reddish. Length mm. (female and male) dorsalis Mesopleurae and rest of mesothorax not reddish; abdomenblack throughout; size the same as in the
. Guide to the insects of Connecticut . an pleuralis 4. Abdomen black, or with apical margins of dorsal segments narrowly pale; second dorsal abdominal segment polishedor finely punctate; legs entirely reddish, without a paleline in front of tegulae. Length mm. (female and male) propinquus Abdomen mostly reddish, black at base, or black at base andapex. Length 7-8 mm. (female and male) semirufus 5. Mesopleurae, and usually most of the thorax, reddish. Length mm. (female and male) dorsalis Mesopleurae and rest of mesothorax not reddish; abdomenblack throughout; size the same as in the typical form dorsalis var. annulicrus *E. propinquus Cresson. E. semirufus Cresson. New Haven, 15 May, 1905 (B. H. W.), 24 May, 1905 (W. ) ; Mt. Carmel, 25 May, 1906, Southington, 16 May, 1906 (B,H. W.). E. pallipes Cresson. New Haven, 22 May, 1905 (B. H. W.) ; Branford, 28 July,1905 (H. ). °E. pallipes var. pleuralis Cresson. °E. dorsalis Cresson. °E. dorsalis var. annulicrus Walsh. No. 22.] HYMENOPTERA OF CONNECTICUT. 307. Fig. 9.—Exochus propinquus. Metacoelus Foerster.°M. laevis Cresson. Female and male: length 5-7 mm.; mostly blackish, with thelegs and palpi brownish red, antennae still darker; face with adark red stain beneath the antennas; propodeum completely areo-lated. Triclistus to Species. 1. Thorax and abdomen mostly black 2 Thorax and abdomen reddish or nearly so; hind tibiae not annulate, without white annuli; face white; thorax withwhite markings; areolet wanting. Length 6 mm. (femaleand male) atriceps 2. Face and abdomen entirely black; coxae and legs reddish Length 7-8 mm. (female and male) curvator Face yellow to dusky red; abdomen beneath and its ultimateand penultimate dorsal segments reddish. Length 8 mm.(female and male) apicalis °T. atriceps Walsh.°T. apicalis Cresson.°T. curvator Fabricius. 308 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. Chorineus to Species. 1. Metapleurse entirely smooth, or with two or
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