Tylosema nigerrimum Kieffer

(Fig. 7)

Tylosema nigerrimum Kieffer 1905:112 . Type species by monotypy.

Redescription. holotype MALE: Head. Shagreened on vertex, cheeks (Fig. 7 B) frons and occiput (Fig. 7 E); sparse setae present on frons, occiput, genal area and area around ocelli. Antenna entirely dark brown/black; scape 1.7x length of radicle, short appressed setae present on all 13 flagellomeres, moniliform.

Mesosoma. Lateral aspect of pronotum strongly areolate, rugose, with few sparse setae (Fig. 7 B). Mesopleuron entirely rugulose/areolate dorsal of mesopleural carina; gently shagreened below mesopleural carina (Fig. 7 B); dorsal and ventral margins of mesopleural triangle clearly visible, setose, with distinct grooves following contours of anterior margin of mesopleural triangle (Fig. 7 B). Mesoscutum shagreened with moderate setation present; notaulices incomplete anteriorly, parascutal impression obsolete; area between posterior junction of notaulices delineated by a ‘pinched’ area (Fig. 7 C). Disk of scutellum shagreened and evenly rounded; margin of disk well defined by a distinct carina (Fig. 7 C).

Metapleural-propodeal complex. Metapleuron with a few scattered setae along posterior margins (Fig. 7 B). Propodeum crenulate with few long setae; area between propodeal carinae weakly carinate, glabrous. Nucha crenulate, not striate, slightly protruding posteriorly (Fig. 7 B).

Metasoma. Petiole obscured anteriorly by syntergum. Syntergum smooth and shiny; posterior portion lacking setae. Entire metasoma, in lateral view, 1.67x longer than deep.

Wings. Pseudostigma weakly sclerotised such that the marginal cell is visible (Fig. 7 D).

Legs. Coxae and femora setose, dark brown/black; rest of legs brown except for pale brown joints; evenly setose entirely to claws (Figs 7 A and B).

FEMALE. Unknown.

Diagnosis. Separated from T. dayae by having the scutellar disk shagreened and distinctly margined posteriorly (smooth and lacking margin in T. dayae) and from T. ronquisti by having a rugulose/areolate lateral aspect of the pronotum (smooth in T. ronquisti) and a shagreened mesoscutum (smooth in T. ronquisti).

Distribution. Northern Africa: Algeria (Fig. 12).

Material examined. Holotype: NORTHERN AFRICA: [first label] Algeria, Tebessa, 26-4-(18)98, deGaulle, [second label] Tylosema nigerrimum K (handwriting unknown), [third label] HOLOTYPE, [fourth label] Museum Paris [see inset Fig. 7 A for labels]. The type is a male, in good condition (c.f. Fig. 7 A), having been remounted on a white card; the left hind leg and forewing have been mounted separately from the body. Deposited in MNHN.

Additional material. None.

Image deposition. A MorphBank collection of images of T. nigerrimum can be accessed via http://morphbank.net/Show/?id= 110341.