The genus Aphaniosoma Becker, 1903 (Diptera: Chyromyidae) in the Eastern Mediterranean and Middle East, with descriptions of new species Author Ebejer, Martin J. text European Journal of Taxonomy 2023 2023-06-08 872 1 161 http://zoobank.org/05098e38-ab11-486e-8f28-8567de6bc19c journal article 53713 10.5852/ejt.2023.872.2131 31ad2cf7-cce8-4202-9a46-d81b0073d561 2118-9773 8018303 05098E38-AB11-486E-8F28-8567DE6BC19C Aphaniosoma nigrum Ebejer, 1998 Fig. 66 Material examined TUNISIA • 1 ♂ ; Pont de Bizerte ; 17 May 1995 ; M.J. Ebejer leg.; marsh; MJE . Remarks An almost completely black species with sparse microtomentum ( Fig. 66A ). It is similar to A. creperum and A. nigricauda . The male abdominal tergite 5 is clearly longer than tergite 4 when observed dorsally at middle ( Fig. 66B ), a character not observed in similar species. The twisted and incised lower lateral margin of tergite 6, the shape of the black postgonites and the shape of the pregenital sternite ( Ebejer 1998: 216 , figs 47–49) are the easiest characters for identification and separation from the similar species. Distribution Cyprus , Malta , Morocco , Tunisia ( Ebejer 1998 , 2016 , 2021a ).