Dorylus (Anomma) mayri Santschi
Type locality Cameroun (Santschi, 1912b: 159, illustrated,
worker) no location; worker only known (see Bolton, 1995)
 .
Santschi's (1912b) description is at
- he emphasised that he probably had not seen the major or
soldier, hence his image, of a 10 mm worker, has to be regarded
with caution (I would not expect to see the extra teeth on the
mandibles if it were a major).
Raignier & van Boven (1955) cite Santschi's original
description from 3 specimens from Cameroun (passed to him by
Emery, from Mayr). Santschi thought of it as a cousin of arcens
but probably with a very large worker.
The key features are - antennal scape long and slender (width no
more than 20% of length); petiole posterior no wider than anterior
and twice as long as wide (as in wilverthi, although that
has a petiole which is slightly wider posteriorly) rounded
ventro-posterior teeth. |
 Polymorphism
-
The photomontages are of specimens collected in the Kalinzu
Forest, Uganda (sample III-135, 21.xi.2002; by Shigeo
Uehara). The major and other morphs, lacking the second media
morph that probably would have matched Santschi's description
(above), are shown on the polymorphism montage. The major morph is
very large as predicted by Santsci.
The various morphs are shown in detail on the
Dorylus (Anomma) mayri
morphs page. |
 Full
new description - Uehara III-135
Overall - shiny matt mostly yellow brown, with apex of head and
mandibles much darker, also dark on much of the gaster brown with
distinct yellow brown apical bands to each tergite; yellow brown
scapes, funiculi and legs
TL 13.1 HW 4.10 HL 3.60 HD 2.75 CI SL 1.2 SI AL 4.0 PW 1.1 PetL
1.0 GL 4.50 MFL 3.0
Head - trapezoid, widest pre-anterior, posterior little more than
1/2 as wide, sides weakly convex, rear third more convex and
angled inward; posterior margin quite deep scallop, with very
slight median outward bump, posterolateral angles sharp;
sculpturation of extremely fine spiculation, almost effaced on
posterior half of face, which has very minute and very sparse hair
pits; median line always visible, clearly impressed in anterior
third; clypeal margin a concave arc, with frontal carinae giving
rise to distinct anterior points; median hair, very fine pair away
from midpoint; mandible polished, very long but quite thick with a
moderate basal tooth, hardly visible hair pits; scape very short,
not reaching sides of head when directed laterally, moderately
thick, broadening from base to apex, near smooth; funiculus
segments progressively lengthening and widening; apex no more than
1/3 longer than 9; head in profile very bulbous, posterior corners
fairly acute angles; hairs barely visible @ 32x.
Alitrunk - in profile a shallow dome; distinct and shallowly
convex "saddle"; spiracle an angled oval rearward facing
with top more forward than bottom; dorsum of propodeum long
slightly convex and lower at posterior, declivity short and
vertical with incurve at bottom; metapleural gland with upper
margin distinctly longer than lower; all over very fine
spiculation; hairs none.
Petiole - moderately long, flat dorsum, posterior face vertical
but not in turned; dorsum first two-thirds parallel sides then
widening front to back; posterior ventral processes well
devoloped; spiracle small but distinctly raised; subpetiolar
process a quite small triangle; sculpturation as alitrunk; pair of
hairs on posterior dorsum, several hairs below.
Gaster - first segment much narrow anteriorly, sternite with
notches to accomodate postero-lateral processes of petiole; all
segments shiny; hairs sparse on posterior margins but long fringe
on posterior of first tergite; very short and sparse pilosity on
apical two segments.
Legs - coxae moderately long but more rounded outer surface;
femora broad, without spiculation; tibiae moderately wide, almost
no pilosity; tarsae long and slender, finely bristly, large claws.
|
Minima morph