Cerapachys
1.
Antenna with 9 segments
(Trinidad,
Puerto
Rico,
Hawaii,
introduced) ………………... biroi Forel
(= seini Mann, = ierensis Weber, =
silvestrii Wheeler)
Fig. 1. Side view of a worker of Cerapachys
augustae (from Creighton, 1950).
Antenna with 11 or 12 segments
………………………………..……… 2
2(1). Antennae
12-segmented
Trinidad, Costa Rica [Guanacaste],
Colombia [Antioquia], Cuba) ………….
…………………… neotropicus Weber
Fig. 2. Side view of a female of Cerapachys
augustae (from Creighton, 1950).
Fig. 5. Side view of a worker of Cerapachys
neotropicus (from Weber, 1939).
Fig. 3. Side view of a male of C. davisi (from
Smith, 19??).
-
Antennae 11-segmented ….…. 3
3(2). Body smooth and shining, with
widely spaced punctures; Colombia
(Meta), SE Brasil … splendens
Borgmeier
Fig. 4. Wing of a male of C. davisi (from
Smith, 19??).
Key to New World
workers and females 1
1
Cerapachys
There are apparently some
uncommon, undescribed species. The
foveolae on the head of specimens from
Mexico (Chiapas, Nuevo León, Puebla),
Panama (Canal Zone) and Colombia
(Magdalena) are intermediate in size
Body densely covered with
coarse foveolae or punctures, mostly
contiguous on dorsum of head (North,
Central and northern South America)
(augustae group) ……………..……… 3
between toltecus and augustae. Other
specimens from Colombia (Magdalena)
have only a few foveolae on the sides of
the mesosoma, and are partially smooth
and shiny.
3(2). Dorsum of head completely and
coarsely covered with small foveolae,
about 15 - 25 between posterior edge of
frontal carina and posterior margin, with
head in full face view; USA (AZ, FL,
AR, TX,) México (Oaxaca, Tamps),
Costa Rica (Puntarenas), Panamá (Canal
Zone),
Colombia
(Magdalena)
………………... ……………………..
augustae Wheeler
Dorsum of head covered with
coarse foveolae (approximately 12
between posterior edge of frontal carina
and vertex, with head in full face
view)…………….………………….... 4
4(3). Foveolate punctures on dorsum
of mesosoma not contiguous, region
between them smooth and shining;
Mexico (Chiapas, San Luis Potosí,
Veracruz), Guatemala, Belize (British
Honduras), Costa Rica (Punnarenas),
Colombia
(Antioquia),
Ecuador
(Pichincha) …..……….. toltecus Forel
Fig. 7. Head of a worker of Cerapachys
toltecus (from Serna, 199?).
Fig. 8. Mandibles of a worker of C. toltecus
(from Serna, 1999).
Foveolate punctures on dorsum
of mesosoma contiguous, without
shining region between them; Honduras
(Lonbardia)
……………………….
hondurianus Mann 2
Males taken at light in Texas,
New Mexico, and Arizona are referred
to C. augustae and C. davisi.) They can
be separated with the following key:
Fig. 6. Side view of a worker of Cerapachys
toltecus (from Serna, 1999).
1.
Larger (total length at least 4
mm); all funicular segments except first
longer than wide; collected at black
lights in southern New Mexico, west
Texas
and
Chihuahua
................….……….......... davisi Smith
Small (total length less than 4 mm);
funicular segments wider than long;
widely distributed (see worker key)
..…………….……... augustae Wheeler
Cerapachys augustae Wheeler
2
probably a synonym of C. toltecus
Figs. ; Map
Fig. 306. Side view of the
mesosoma, petiole and first gastral
tergum of a worker of L. humile.
Map 1. Linepithema humile.
Figs. ; Map
Fig. 306. Side view of the
mesosoma, petiole and first gastral
tergum of a worker of L. humile.
Map 2. Linepithema humile.
Discussion.
Distribution.
Discussion.
Distribution.
Map 1. Cerapachys augustae.
Map 2. Cerapachys biroi.
Habitat.
Biology.
Habitat.
Biology.
Cerapachys biroi Forel
Cerapachys davisi Smith
Figs. ; Map
Fig. 306. Side view of the
mesosoma, petiole and first gastral
tergum of a worker of L. humile.
Map 3. Linepithema humile.
Figs. ; Map
Fig. 306. Side view of the
mesosoma, petiole and first gastral
tergum of a worker of L. humile.
Map 4. Linepithema humile.
Discussion.
Distribution.
Discussion.
Distribution.
Map 3. Cerapachys davisi.
Map 4. Cerapachys hondurianus.
Habitat.
Biology.
Habitat.
Biology.
Cerapachys hondurianus Mann
Cerapachys neotropicus Weber
Figs. ; Map
Fig. 306. Side view of the
mesosoma, petiole and first gastral
tergum of a worker of L. humile.
Map 5. Linepithema humile.
Figs. ; Map
Fig. 306. Side view of the
mesosoma, petiole and first gastral
tergum of a worker of L. humile.
Map 6. Linepithema humile.
Discussion.
Distribution.
Discussion.
Distribution.
Map 5. Cerapachys neotropicus.
Map 6. Cerapachys toltecus.
Habitat.
Biology.
Habitat.
Biology.
Cerapachys toltecus Forel
Literature Cited
Serna, F. 1999. Hormigas de la
zona de influencia del Proyecto
Hidroeléctrico Porec II. Unpublished
Master’s Thesis, Universidad Nacional
de Colombia, xiv + 250 pp.