. Bulletin of the British Museum (Natural History) Entomology. . Figs 4a-f Lateral mesosoma of Alabagrus species, a, albispina; b, itnitatus; c, texanus; d, parvifasciatus; e, masneri; f, haenschi. species of Alabagrus have the carinae reduced (Fig. Id) and this is apomorphic in Alabagrus. Reduction of the carinae on the frons is not correlated with reduction of carinae and sculpture on the mesosoma and metasoma. Notauli (Fig. 7a-d) The presence of well-improessed notauli is plesiomorphic; they are present in Pharpa and most genera of Agathidinae. Notauli may be weakly impressed or completely
. Bulletin of the British Museum (Natural History) Entomology. . Figs 4a-f Lateral mesosoma of Alabagrus species, a, albispina; b, itnitatus; c, texanus; d, parvifasciatus; e, masneri; f, haenschi. species of Alabagrus have the carinae reduced (Fig. Id) and this is apomorphic in Alabagrus. Reduction of the carinae on the frons is not correlated with reduction of carinae and sculpture on the mesosoma and metasoma. Notauli (Fig. 7a-d) The presence of well-improessed notauli is plesiomorphic; they are present in Pharpa and most genera of Agathidinae. Notauli may be weakly impressed or completely absent in Alabagrus. Longitudinal ridge of scutum (Fig. 7d) Anteriorly the scutum of most species of Alabagrus has a rounded, median, longitudinal ridge, bounded laterally by longitudinal depressions. This character state occurs in many other agathidine taxa, Cremnops Foerster, Euagathis Szepligeti, Coccydium and Zelomorpha Ashmead. Although the ridge is absent in Pharpa, the hypothesized sister group of Alabagrus, and some other genera of Agathidinae, I consider presence of the ridge to be the ground-plan state for Alabagrus because it is more likely that the state was lost in Pharpa rather than independently gained in Alabagrus. The loss of this ridge therefore is considered apomorphic within 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 British Museum (Natural History). London : BM(NH)
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