. Bulletin of the British Museum (Natural History) Entomology. RECLASSIFICATION OF M£L/lAfOT{/5 GROUP 103. Figs 55-56 Pronotostemal suture of (55) Adrastus limbatus, A-border of prostemum, B-border of hypomeron, X-Y- portion of pronotostemal suture and adjoining areas believed to correspond to Gurjeva's 'treble prostemal suture', (56) Neosilesis borneoensis. 1 Margin of mesocoxal cavity formed by the mesoster- num and metastemum; mesepistemum in contact with metastemum, separating the mesepimeron from the mesostemum (Fig. 46, arrow); mesocoxa without emargination, trochantin not visible (Fig.
. Bulletin of the British Museum (Natural History) Entomology. RECLASSIFICATION OF M£L/lAfOT{/5 GROUP 103. Figs 55-56 Pronotostemal suture of (55) Adrastus limbatus, A-border of prostemum, B-border of hypomeron, X-Y- portion of pronotostemal suture and adjoining areas believed to correspond to Gurjeva's 'treble prostemal suture', (56) Neosilesis borneoensis. 1 Margin of mesocoxal cavity formed by the mesoster- num and metastemum; mesepistemum in contact with metastemum, separating the mesepimeron from the mesostemum (Fig. 46, arrow); mesocoxa without emargination, trochantin not visible (Fig. 46); anterior coxal cavity narrowly open posteriorly, mucro truncate (Fig. 53); supra-antennal carinae confluent, nasale distinct APTOPUS - Combination of character states not as above. (Anterior coxal cavity wide open posteriorly (Figs 13, 14, 15, 16, 17, 54); mesepistemum separated from the metastemum by the mesepimeron (Figs 23-26,47-52)) 2 2 Blade of each mandible simple, without a tooth; anterior margin of prostemum truncate. (Pronotum wihout basal lateral incisions) . .. TOXOGNATHUS - Blade of each mandible with a single tooth; anterior margin of prostemum arcuate 3 3 Lateral margins of prostemum with an impunctate or almost impunctate border arising at or near the point of divergence of prostemum and hypomeron and attaining at least the middle of the length of the pronotostemal suture (Fig. 55, A); inner margin of hypomeron with an impunctate border (Fig 55, B). (The posterior portion of the mesepistemum im- punctate, or almost impunctate, and shiny, mesepi- meron densely punctate and pubescent (Figs 46-52); body length 2-12 mm) 5 - Lateral margins of prostemum without an impunc- tate border within anterior half of their length, or if a border is present it either does not attain the middle of the length of the pronotostemal suture (Figs 18, 20,21, 22,56) or the pronotostemal suture lies at the base of a groove (Fig. 19) 4 4 Supra-antennal carinae not confluent in the m
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