Lepisiota nigrisetosa (Santschi)
Type location Zaïre (Acantholepis
nigrisetosa n. sp., Santschi, 1935a: 271; holotype worker only
described), from Kasai, Ngombe, 6.xi.1921, by Dr Schouteden; (see
Bolton, 1995) .
(1935a) description is on .
Translated this is -
WORKER - TL 3.2 mm; colour black; head, anterior tibiae and peduncle of
petiole red brown; mandibles, antenna and tarsi yellow, leg joints
yellow to red. Erect pilosity black long and abundant on the gaster and
head, less dense on the thorax, absent on the appendages. Legs with a
fine pale, translucent pubescence, denser on the antennae. Head dull,
finely and superficially reticulate; similar but fainter sculpturation
of the pronotum and petiole scale, which are shinier. Mesonotum with
irregular longitudinal rugae. Propodeum and metasternum densely
reticulo-punctate and matt. Rest of petiole scale, appendages and
gaster smooth and shiny.
Head a short oval, about one-seventh longer than wide, rounded behind
the eyes. Clypeus convex and with a diffuse medial carina, slightly
truncated anteriorly. Mandibles smooth with apices apart when closed,
armed with 5 teeth. Postclypeal notch large and long; frontal carinae
and parallel longer than their distance apart. Eyes quite large,
situated at about the level of the posterior third of the head, and in
frontal view not reaching the sides of the face. Scape exceeding the
posterior margin of the face. Alitrunk width about three-quarters that
of head; pronotum as wide as long; metanotal stomata raised; metanotal
groove deep. Dorsum of propodeum raised obliquely to rear, strongly
concave between the posterior angles which are in the form of truncated
cones. Petiole scale slightly higher than length of posterior peduncle;
the summit concave between two fine teeth or spines, these about as
long as their basal interval. Gaster large. Legs long.
Related to silvicola Arnold (from Mozambique)
but that has a darker head, brown legs, head matt with denser
sculpturation, whiter longer finer and more abundant pilosity; the head
is longer and ocelli bigger; metanotal groove also even more pronounced
but less obliquely raised at rear; petiole scale without teeth.