Taxonomic revision of the ant (Hymenoptera: Formicidae) genus Paraparatrechina in the Afrotropical and Malagasy Regions
Author
Lapolla, John S.
Author
Cheng, Chiu H.
Author
Fisher, Brian L.
text
Zootaxa
2010
2387
1
27
journal article
10.5281/zenodo.193808
9f229dfd-c07e-444d-b063-45a884c0adb9
1175-5326
193808
Paraparatrechina myops
LaPolla and Fisher
,
sp. nov.
(
Fig. 13
,
16
,
17
)
Holotype
worker,
MADAGASCAR
: Prov. Antsiranana; P.N. Marojejy;
26.6 km
31° NNE Andapa;
18–21.xi.2003
; elev.
1325 m
;
14°26.2’ S
,
49°44.6’E
; Fisher
et al.
(BLF 9080) (
CASC
); 6
paratype
workers, same locality as
holotype
(
CASC
,
USNM
)
Worker diagnosis:
small eyes (REL: <20); scapes with decumbent pubescence.
Compare with:
P. glabra
and
ocellatula
WORKER.
Measurements (n=27)
: TL: 1.8–2.4; HW: 0.42–0.51; HL: 0.51–0.64; EL: 0.07–0.11; SL: 0.55–0.74; PW: 0.31–0.36; WL: 0.56–0.78; PDH: 0.21–0.3; PrFL: 0.43–0.62; PrFW: 0.1–0.14; GL: 0.61– 1.05.
Indices
: CI: 77–89; REL: 13–17; SI: 121–162; FI: 20–25
FIGURE 13.
Paraparatrechina myops
worker holotype CASENT0042527. A, profile; B, dorsum; C, full face.
Head yellow, with slightly lighter yellow antennae; cuticular surface shining. Pubescence covering head appressed, but long, giving it a shaggy appearance. Scapes surpass posterior margin by about the length of the first 3–4 funicular segments; scapes covered in short, decumbent pubescence. Mesosoma yellow and compact; a fine pubescence covers entire mesosomal dorsum. Metanotal area distinct, with prominent mesonotal spiracles. Pronotum rises steeply from anterior margin to dorsum. Propodeum possesses a short, slightly rounded dorsal face, with a long declivitous face. Legs yellow and in some specimens the trochanters and tarsi are slightly lighter yellow; gaster yellow.
Etymology.
The species epithet is a Greek noun in apposition for mouse eye, in reference to the small eyes found in this species.
Non-type material examined:
MADAGASCAR
:
Prov. Antsiranana, R.S. Manongarivo,
14.5 km
220° SW Antanambao,
48° 25.7’ E
,
13° 59.9’ S
,
20.x.1998
, elev.
1175 m
(B.L. Fisher); Prov. Antsiranana, P.N. Marojejy,
26.6 km
31° NNE Andapa,
49° 44.6’ E
,
14° 26.2’ S
,
18–21.xi.2003
, elev.
1325 m
(Fisher
et al.
);
9.2 km
WSW Befingotra, Res. Anjanaharibe-Sud,
49° 28’ E
,
14° 45’ S
,
5.xi.1994
, elev.
1280 m
(B.L. Fisher);
6.5 km
SSW Befingotra, Res. Anjanaharibe-Sud,
49° 30’ E
,
14° 45’ S
,
19.x.1994
, elev.
875 m
(B.L. Fisher);
9.2 km
WSW Befingotra, Res. Anjanaharibe-Sud,
49° 28’ E
,
14° 15’ S
,
9.xi.1994
, elev.
1200 m
(B.L. Fisher);
11 km
WSW Befingotra, Res. Anjanaharibe-Sud,
49° 27’ E
,
14° 45’ S
,
16.xi.1994
, elev.
1565 m
(B.L. Fisher)
Notes.
There are two species of
Malagasy
Paraparatrechina
that possess small eyes,
P. myops
and
P. ocellatula
. Interestingly, both appear to be montane species. These two species are difficult to separate, their main distinguishing feature being the different sizes of various anatomical structures.
P. myops
is a much larger species and also possesses decumbent pubescence on the scapes;
P. ocellatula
is a smaller species overall, and possesses appressed pubescence on the scapes. Given the propensity of
Prenolepis
genus-group species to evolve worker polymorphism (
LaPolla
et al.
, 2010
), we at first considered
P. myops
to be larger workers of
P. ocellatula
. However, plots of their corresponding morphological data clearly indicate the presence of two groups (fig. 16E) rather than continuous variation.
As
a result, we have chosen to consider these two groups as distinct species based on their significant morphometric differences, but as molecular and other forms of data become available the specific status of both
P. m y o p s
and
P. ocellatula
should be reexamined.