. Bonn zoological bulletin. Zoology. Fig. 2. Morphology of Monoleptoides dupUcata (Sahlberg, 1823). a-e. Habitus showing typical colour variation, f. Pronotum, detail, g, h. Basal antennomeres one to four of male (g) and female (h). i-k. Median lobe of a typical specimen, lateral (i), dorsal (j), and ventral without endophallic structures (k). l-n. Median lobe of small specimens, lateral (1), dorsal (m), and ventral with- out endophallic structures (n). o. Spermathecae of two different females. Scale bars: 1 mm. Monoleptoides duplicata is often entirely yellow, which is comparatively rare in M
. Bonn zoological bulletin. Zoology. Fig. 2. Morphology of Monoleptoides dupUcata (Sahlberg, 1823). a-e. Habitus showing typical colour variation, f. Pronotum, detail, g, h. Basal antennomeres one to four of male (g) and female (h). i-k. Median lobe of a typical specimen, lateral (i), dorsal (j), and ventral without endophallic structures (k). l-n. Median lobe of small specimens, lateral (1), dorsal (m), and ventral with- out endophallic structures (n). o. Spermathecae of two different females. Scale bars: 1 mm. Monoleptoides duplicata is often entirely yellow, which is comparatively rare in M. thomsoni. Most specimens of M. thomsoni have small elytral bands (Fig. 7c) while most specimens of M. duplicata have stronger black elytral colouration (Fig. 2c). However, both species can only be reliably distinguished by the male genitalia, the allocation of females to species is sometimes almost impossible. The median lobe is slightly curved ventrally and has a blunt- ly rounded apex in M. dupUcata (Fig. 2i-n), while M. thomsoni has a straight inedian lobe with a pointed apex (Fig. 7i-n). Despite both species having a wide overlap in geographical distribution, they seem to prefer different habitats. Based on about 600 specimens with detailed col- lecting site data, only four places could be identified where both species obviously occur syntopically (Dalaba and Tabuna Valley, both in Guinea; Garamba National Park in north-eastern DRC; and Bambesa in southern DRC). In southern Africa M. duplicata may be confiised with M. Bonn zoological Bulletin 60 (2): 169-199 ©ZFMK. 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 Forschungsmuseum Alexander Koenig. Bonn : Zoologisches Forschungsmuseum Alexander Koenig
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