Camponotus radamae Forel, 2022

Rakotonirina, Jean Claude & Fisher, Brian L., 2022, Revision of the Malagasy Camponotus subgenus Myrmosaga (Hymenoptera, Formicidae) using qualitative and quantitative morphology, ZooKeys 1098, pp. 1-180 : 1

publication ID	https://dx.doi.org/10.3897/zookeys.1098.73223
publication LSID	lsid:zoobank.org:pub:B4F4033F-296E-43CC-BE54-B9413BC19268
persistent identifier	https://treatment.plazi.org/id/66E9699F-6207-58DC-B676-0AF2BC761E77
treatment provided by	ZooKeys by Pensoft
scientific name	Camponotus radamae Forel
status	stat. rev.

Treatment

Camponotus radamae Forel stat. rev.

Figs 2B View Figure 2 , 6B View Figure 6 , 17A View Figure 17 , 18B View Figure 18 , 19A View Figure 19 , 70 View Figure 70

Camponotus hova radamae Forel, 1891: 31. Lectotype minor worker, by present designation, Madagascar, forêts du versant NE du grand massif (Humblot) AntWeb CASENT0104639 (ZMHB) [examined]. Paralectotypes: with the following data Forêt des bords de l’Ivondrona, près de Tamatave (Dr Conrad Keller) and forêts du versant NE du grand massif (Humblot): 2 minor workers: 1 from Forêt des bords de l’Ivondrona CASENT0101347 ( MHNG); 1 from Forêts du versant NE du grand massif (Humblot) CASENT0101426 ( MNHN); 4 major workers: 3 from Forêt des bords de l’Ivondrona CASENT0101346, CASENT0101867 ( MHNG), CASENT0101427 ( MNHN); 1 from Forêts du versant NE du grand massif (Humblot), CASENT0101432 ( MNHN) [examined]. Raised to species by Dalla Torre 1893: 249. As subspecies of Camponotus hova by Emery, 1920b: 6; 1925: 86; Bolton, 1995: 119 [ Camponotus maculatus r. radamae Forel, 1891]. Stat. rev.

Additional material examined.

Madagascar: Antsiranana: 6.5 km SSW Befingotra, Réserve Anjanaharibe-Sud, -14.75, 49.5, 875 m, rainforest (B.L. Fisher) ( CAS); Ambondrobe, 41.1 km 175° NW Vohemar, -13.71533, 50.10167, 10 m, littoral rainforest (B.L. Fisher) ( CAS); Betaolana Forest, along Bekona River, -14.52996, 49.44039, 880 m, rainforest (B.L. Fisher et al.) ( CAS); Forêt Ambanitaza, 26.1 km 347° Antalaha, -14.67933, 50.18367, 240 m, rainforest (B.L. Fisher) ( CAS); Forêt d’Antsahabe, 11.4 km 275° W Daraina, -13.21167, 49.55667, 550 m, tropical dry forest (B.L. Fisher) ( CAS); Forêt d’Antsahabe, 11.4 km 275° W Daraina, -13.21167, 49.55667, 550 m, tropical dry forest (B.L. Fisher) ( CAS); Makirovana forest, -14.16506, 49.9477, 900 m, montane rainforest (B.L. Fisher et al.) ( CAS); Marojejy, tributary Manantenina R. -14.43333, 49.75, 750 m, (Quinter & Nguyen) ( CAS); PN Masoala, -15.3014, 50.22776, 280 m, rainforest (B.L. Fisher et al.) ( CAS); PN Masoala, -15.33058, 50.30279, 250 m, rainforest (B.L. Fisher et al.) ( CAS); PN Marojejy, Manantenina River, 27.6 km 35° NE Andapa, 9.6 km 327 °NNW Manantenina, -14.435, 49.76, 775 m, rainforest (B.L. Fisher) ( CAS); SAVA Region, District of Sambava, PN Marojejy, 5 km W of Manantenina village, 1st Camp site (Mantella), -14.43817, 49.774, 487 m, Low altitude rainforest ( Rin’Ha, Mike) ( CAS). Fianarantsoa: 7.6 km 122° Kianjavato, FC Vatovavy, -21.4, 47.94, 175 m, rainforest (B.L. Fisher et al.) ( CAS); Atsimo Atsinanana Region, District of Farafangana, Mahabo Mananivo, 50 km S of Farafangana Ampitavananima, Forest low altitude, Littoral forest on sand 2 km E of Mobot office, -23.12983, 47.717, 33 m, Littoral Low Alt Rain Forest (Mike, Frank, Rin’ha) ( CAS); RS Manombo 24.5 km 228° Farafangana, -23.01583, 47.719, 30 m, rainforest (B.L. Fisher et al.) ( CAS); RS Manombo, 32 km SE of Farafangana, -23.02183, 47.72, 36 m, Lowland rainforest ( Rin’Ha, Mike) ( CAS); Miandritsara Forest, 40 km S of Ambositra, -20.79267, 47.17567, 822 m, Low altitude rainforest ( Rin’Ha, Mike) ( CAS); Réserve Forestière d’Agnalazaha, Mahabo, 42.9 km 215° Farafangana, -23.19383, 47.723, 20 m, littoral rainforest (B.L. Fisher et al.) ( CAS); Vohiparara broken bridge, -21.22617, 47.36983, 1110 m, high altitude rainforest (M.E. Irwin, F.D. Parker, R. Harin’Hala) ( CAS). Toamasina: 5.3 km SSE Ambanizana, Andranobe, -15.66667, 49.96667, 600 m, rainforest (B.L. Fisher) ( CAS); 5.3 km SSE Ambanizana, Andranobe, -15.67133, 49.97395, 425 m, rainforest (B.L. Fisher) ( CAS); Analanjirofo Region, District of Toamasina, Mobot Site, Analalava humid dense forest low altitude 7 km SW of Foulpointe, -17.70889, 49.45806, 42 m, dense humide forest low altitude (Mike, Rin’ha) ( CAS); Analanjirofo Region, District of Toamasina, Mobot Site, Analalava humid dense forest low altitude on the sand 7 km SW of Foulpointe, -17.69333, 49.46028, 75 m, dense humide low alt on the sandy soil (Mike, Rin’ha) ( CAS); Ankerana, -18.40636, 48.80254, 1108 m, montane forest (B.L. Fisher et al.) ( CAS); Ankerana, -18.4017, 48.80605, 1035 m, montane forest (B.L. Fisher et al.) ( CAS); Corridor Forestier Analamay-Mantadia, Ambohibolakely, -18.76131, 48.36437, 983 m, rainforest (B.L. Fisher et al.) ( CAS); Corridor Forestier Analamay-Mantadia, Tsaravoniana, -18.75737, 48.42302, 1018 m, rainforest (B.L. Fisher et al.) ( CAS); FC Didy, -18.19833, 48.57833, 960 m, rainforest (H.J. Ratsirarson) ( CAS); Forêt d’Analava Mandrisy, 5.9 km 195° Antanambe, -16.48567, 49.847, 10 m, littoral rainforest (B.L. Fisher et al.) ( CAS); Ile Sainte Marie, Forêt Ambohidena, 22.8 km 44° Ambodifotatra, -16.82433, 49.96417, 20 m, littoral rainforest (B.L. Fisher et al.) ( CAS); Ile Sainte Marie, Forêt Kalalao, 9.9 km 34° Ambodifotatra, -16.9225, 49.88733, 100 m, rainforest (B.L. Fisher et al.) ( CAS); Mahanoro, -19.89933, 48.80883, 15 m, urban/garden (B.L. Fisher et al.) ( CAS); Mahavelona (Foulpointe), -17.66667, 49.5, in forest (A. Pauly) ( CAS); Mahavelona (Foulpointe), -17.66667, 49.5, Forest d’Ambodariamy (A. Pauly) ( CAS); Montagne d’Akirindro 7.6 km 341° NNW Ambinanitelo, -15.28833, 49.54833, 600 m, rainforest (Fisher, Griswold et al.) ( CAS); Nosy Mangabe, -15.5, 49.76667, <5 m, littoral vegetation (P.S. Ward) ( CAS); PN Masoala, 40 km 154° SSE Maroantsetra, -15.72667, 49.95667, 150 m, rainforest (A. Dejean et al.) ( CAS); PN Zahamena, Tetezambatana forest, near junction of Nosivola and Manakambahiny Rivers, -17.74298, 48.72936, 860 m, rainforest (B.L. Fisher et al.) ( CAS); Parcelle E3 Tampolo, -17.28104, 49.43012, 10 m, littoral forest (Malagasy ant team) ( CAS); Parcelle K7 Tampolo, -17.28333, 49.41667, 10 m, littoral forest (Malagasy ant team) ( CAS); RNI Betampona, -17.9152, 49.20998, 330-360 m, rainforest, (M.A.Rajaonarivo) ( CAS); Réserve Nationale Intégrale Betampona, Betampona 35.1 km NW Toamasina, -17.91801, 49.20074, 500 m, rainforest (B.L. Fisher et al.) ( CAS); RNI Betampona, 34.08 km 332° Toamasina, -17.91977, 49.20039, 525 m, rainforest (B.L. Fisher) ( CAS); RNI Betampona, 34.1 km 332° Toamasina, -17.91614, 49.20185, 550 m, rainforest (B.L. Fisher) ( CAS); RS Ambatovaky, Sandrangato river, -16.77274, 49.26551, 450 m, rainforest (B.L. Fisher et al.) ( CAS); RS Ambatovaky, Sandrangato river, -16.7633, 49.26692, 520 m, rainforest (B.L. Fisher et al.) ( CAS); RS Ambatovaky, Sandrangato river, -16.8162, 49.29202, 425 m, rainforest (B.L. Fisher et al.) ( CAS); SF Tampolo, 10 km NNE Fenoarivo Atn. -17.2825, 49.43, 10 m, littoral rainforest (B.L. Fisher) ( CAS); Tampolo, -17.28333, 49.41667, 10 m, littoral forest (Malagasy ant team) ( CAS) 11 km SE Ampasimanolotra (=Brickaville), -18.9, 49.13333, 5 m, littoral rainforest (P.S. Ward) ( CAS).

Diagnosis.

Lateral cephalic margins approximately parallel in full-face view; two apical teeth of mandible closely spaced; lateral cephalic margin posterior to eye level without erect hairs; antennal scape covered with appressed hairs; mesosoma much higher and short, with propodeal dorsum 3 × as long as declivity; petiolar node more or less flattened anteroposteriorly and tapering dorsally.

Description.

Minor worker. With head in full-face view, lateral margins anterior to eye level parallel, posteriorly rounding evenly towards short-necked rear margin; eye protruding and large (EL/CL: 0.31 ± 0.01; 0.29-0.34), breaking lateral cephalic margin, location of its posterior margin at posterior 1/3 of head (PoOc/CL: 0.29 ± 0.01; 0.27-0.31); frontal carinae widely opened posteriorly (FR/CS: 0.32 ± 0.01; 0.30-0.34); clypeus with blunt or poorly defined anterolateral angle, anteromedian margin broadly convex; mandible with two apical teeth closely spaced; antennal scape relatively long (SL/CS: 1.52 ± 0.07; 1.42-1.64). Mesosoma with weakly convex promesonotum (MPH/ML: 0.34 ± 0.01; 0.31-0.36), posterior portion flat immediately anterior to metanotal groove; metanotal groove weakly visible, propodeal dorsum almost straight, junction of propodeal dorsum and declivity bluntly angulate, propodeal declivity almost 1/2 length of the dorsum. Petiolar node flattened anteroposteriorly, with dorsal margin rounding to anterior margin; tibia of hind leg rounded axially, without basal twist.

First and second gastral tergites without a pair of white spots; erect hairs on lateral margin of head anterior to level of eyes present but absent behind eye level; antennal scape covered with appressed hairs; posterior margin of head with two erect hairs; posterodorsal angle of propodeum with a pair of erect hairs.

Major worker. Differing from minor worker in the following characters: enlarged head (CS: 2.68 ± 0.31; 2.29-3.02; CWb/CL: 0.95 ± 0.04; 0.89-0.99) with broadly concave posterior margin; two apical teeth of mandible normally spaced; antennal scape barely surpassing posterior cephalic margin; robust mesosoma, metanotum distinctly visible, propodeal dorsum almost as long as the height of much more vertical declivity, their junction forming a broad angle; more pairs of erect hairs on promesonotum, junction of propodeal dorsum, declivity, and posterodorsal margin of petiolar node.

Distribution and biology.

Endemic to Madagascar, Camponotus radamae normally occurs in eastern humid forests ranging from the littoral region to mountaintops (Fig. 70D View Figure 70 ). The species is arboreal and terrestrial, and nests in rotten logs, tree stumps, dead branches, twigs, and rot pockets above the ground, while its workers rarely forage on the ground and on lower vegetation.

Discussion.

Camponotus radamae is similar to C. vano in that the two apical teeth of their mandible are closely spaced, but C. vano has a more elongate body in which the mesosoma is very low and long, and its propodeal dorsum is at least four times as long as the declivity surface. In C. radamae the propodeal dorsum is 3 × as long as the declivity.

In Camponotus radamae the species definition is supported by the clustering shown by the dendrogram and confirmed by cumulative LDA at 100% classification success.