. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Heft 1'2 21/1970 Copulation in Phyllolabis 139 from dawn to dusk. Recently emerged flies were not seen either, except perhaps in a few doubtful cases. The lower edge oí the cerci is serrated in both species, but nothing is knawn as regards oviposition. Phyllolabis hemmingseni Peder Nielsen, 1959. Fig. 1 shows the hypopygium of Ph. hemmingseni. The various parts are numbered to facilitate discussion. According to kind information by Dr. Ch. P. Alexander, Amherst, Mas
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Heft 1'2 21/1970 Copulation in Phyllolabis 139 from dawn to dusk. Recently emerged flies were not seen either, except perhaps in a few doubtful cases. The lower edge oí the cerci is serrated in both species, but nothing is knawn as regards oviposition. Phyllolabis hemmingseni Peder Nielsen, 1959. Fig. 1 shows the hypopygium of Ph. hemmingseni. The various parts are numbered to facilitate discussion. According to kind information by Dr. Ch. P. Alexander, Amherst, Mass., , who has investigated hypopygia presented to him of this and the following species, 1 and 2 represent the basistyle; 3, 4 and 5, tlhe dististyle. Dr. Alexander pointed out that beside the parts pictured in the description by Peder Nielsen (1959, fig. 2, and 1951, fig. 3) there are two further tiny appendages, a pendant fleshy lobe (6 in the figure), which is a projection from the basistyle and a slender rod (7) that extends into a filament and. Fig. 1. Right part of the hypopygium of Phyllolabis hemmingseni. Drawn from prepareMon in Canada balsam. The numbers homologize with fig. 4. 1 and 2: basi- style with appendage 6 (and 8?). 3,4 and 5: dististyle with 7 (see text). 7 and 8 extend Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Zoologisches Forschungsinstitut und Museum Alexander Koenig. Bonn : Das Forschungsinstitut
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