. Bulletin. Natural history; Natural history. Genitalia Fig. 23.—Staclobia delira one-third and two-thirds the distance from the base to the apex of the wing. General structure same as for genus. Genitalia as in fig. 23. Claspers long and slender, hooked dorsad at extreme tip, with only a few minute setae on apical portion. Above these is a pair of short, hooklike appendages (probably cerci) produced laterally into a thumblike process bearing a dense cluster of long setae. Above and between the base of the claspers is a stout, curved tenth tergite which is spicate, from ventral view. The inter
. Bulletin. Natural history; Natural history. Genitalia Fig. 23.—Staclobia delira one-third and two-thirds the distance from the base to the apex of the wing. General structure same as for genus. Genitalia as in fig. 23. Claspers long and slender, hooked dorsad at extreme tip, with only a few minute setae on apical portion. Above these is a pair of short, hooklike appendages (probably cerci) produced laterally into a thumblike process bearing a dense cluster of long setae. Above and between the base of the claspers is a stout, curved tenth tergite which is spicate, from ventral view. The internal skelton of the geni- talia is similar in most respects to that of brustia, consisting of two long ventral arms with a curved, platelike roof oyer the apical portion. Oedagus is fairly long and straight, the basal end flute- shaped, the apex divided into a pair of submembranous lateral lobes and a sclerotized mesal process through which the true penis runs; below this apical structure is a pair of threadlike muscle attachments. Holotype, male.—Spooner, Wisconsin: June .S, 1936, along Namakagon River, Prison & Ross. Paratypes.—Wisconsin.—Same data as for holotype, 7 cT • Stactobia palmata new species The male is set off from other mem- bers of the genus by the digitate proc- esses above the claspers. Male.—Length and general charac- teristics as in the two preceding species. Color similar to species of Hydroptila, the species in life appearing a salt-and- pepper combination of light and dark J grays because of the irregular pattern of | these colors on the head, thorax and wings. Abdomen and genitalia as in fig. 24. Sternites without mesal processes. Claspers curved, short, directed ven- trally and with abundant setae on apical portion. Above them arise a pair of trifurcate processes whose bases curve so that the handlike apices almost meet on the meson below the oedagus. Just below the oedagus is a short "transverse plate. Oedagus long and slender, witho
Size: 1824px × 1369px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
