. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. lu^ t -If J!'?f>i, i; â â ;'':K^ ^' i':i^::!=- 218 DIPTKUA OF XollTir AMERICA. [part II. The few spi'cics of Avhalvua as yet known, '>elong all to the European fnuua. Gen. XXXIX. 9IEDETERUS. Chnrncterb. Face of both sexes rather broad, and in both with a transv(!rse swellinu: l)elow its middle. The jtroboseis very niueh swollen ; when in repose, both sides of its ojjening are so close tojrethi'r, that its lower surface forms but a sin«>-le convexity. The first joint of the antenna' j
. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. lu^ t -If J!'?f>i, i; â â ;'':K^ ^' i':i^::!=- 218 DIPTKUA OF XollTir AMERICA. [part II. The few spi'cics of Avhalvua as yet known, '>elong all to the European fnuua. Gen. XXXIX. 9IEDETERUS. Chnrncterb. Face of both sexes rather broad, and in both with a transv(!rse swellinu: l)elow its middle. The jtroboseis very niueh swollen ; when in repose, both sides of its ojjening are so close tojrethi'r, that its lower surface forms but a sin«>-le convexity. The first joint of the antenna' jilabrous, the third rounded or scjmewhat ovate, with a slender apical or subapical arista. Eyes not hairy. The upper side of the thorax on its posterior end with a concave declivity. The hypopyjriuni with a short peduncle, entirely dis- en<j:a;.?ed, inflected under the venter, with rather short appendages. Feet rather long and slender, almost entirely without bristles ; the first joint of the hind tarsi without bristles, shorter than the second. The third longitudiiud vein, in most of these species, ends not far from the ti}) of the wing, and the last segment of the fourth longi- tudinal vein converges towards the third. The genus consists of two groups; the first of these differs from the secoud by the shorter distance of the posterior transverse vein from the margin of the wing, by a stronger convergency of the third and fourth longitudinal veins, by the snuiller length of the first j<jint of the hind tarsi and a more slender structure of the body. The name of 3Tcdetcri(/i (from n^iin^ioi, neither of the two) was given to this genus, because its species could not be located in any of the two genera of Jh)lii-/iopo(li(l/v, established at that time. The known species belong to Europe, Northern Asia, North- ern Africa, and North Ameri(;a. Of the latter I j^ossess un- fortunately only fragments of specimens, so luat my statements about them will necessarily be very im
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectinsects, bookyear1864
