Entomological news Volume 28 Book PDF, ePub eBook

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Book Descriptions:
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...more than one-half the second antenodal costal spacef, in hind wing more than one-half to nearly two-thirds A. Hammeum. b2. Mi in front wing arising at the fifth postnodal, in the hind wing at the fourth; A in front wing arising at or distal to the cubito-anal crossvein; cubito-anal crossvein in front wing distal to first antenodal from one-fourth to one-third the second antenodal costal space, in hind wing less than one-half. Other species of Acolagrion. Of Leptagrion I have 2 males each of macrurum and andromache. On the basis of description and figures only, clongatum, porrectum and dispar are also referred to the same genus. I know both sexes of flammcum and both sexes of dorsale and demararum n. sp. On the basis of descriptions only, it is probable inca and obsoletum belong here. I have no idea in what genus or genera the following species should be placed: croceum, inornatum and rufum. An examination of the venational characters tabulated later in this paper will show a great deal of variation in relative lengths of the sides of the quadrangle. For example, in the front wing the anterior side may vary in the same species from about one-half the length of the proximal side to longer than the proximal side. Hence characters of the quadrangle based on single specimens are valueless. The teeth on the tarsal claws seem to offer characters of value but are difficult of clear definition. Several species were studied in a comparative way and the following brief notes made: macrurum, tooth large, almost equalling clawt The editor calls my attention to the fact that fig. 20, pi. xviii, shows A at the crossvein. A reexamination of the wings themselves shows that A is really proximal to the crossvein. tThe space between the antcnodals. JOf the two males studied, ...

Entomological news Volume 28 by American Entomological Society

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