Cyphomyrmex flavidus Pergande

Snelling, R. R. & Longino, J. T., 1992, Revisionary notes on the fungus-growing ants of the genus Cyphomyrmex, rimosus-group (Hymenoptera: Formicidae: Attini)., Insects of Panama and Mesoamerica: selected studies., Oxford: Oxford University Press, pp. 479-494: 485

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Cyphomyrmex flavidus Pergande


Cyphomyrmex flavidus Pergande   HNS  

(Figs 30.23, 30.31)

Cyphomyrmex flavidus Pergande   HNS   , 1896: 895; [[worker]]

Cyphomyrmex rimosus dentatus Forel   HNS   , 1901: 124-5; [[worker]]. NEW SYNONYMY.

Cyphomyrmex rimosus dentatus   HNS   : Wheeler, 1907: 722-3; [[worker]], [[queen]]

Cyphomyrmex flavidus   HNS   : Wheeler, 1907: 726-7; 9. Kempf, 1966:172.

Cyphomyrmex dentatus   HNS   : Kempf, 1966:164, 184-6; Figs 8, 21, 31,46; [[worker]], [[queen]]

Pergande (1896) described C. flavidus   HNS   from seven worker specimens collected by Eisen and Vaslit at Santiago Ixtcuintla, near Tepic, Nayarit, Mexico. He compared this new species with C. kirbyi Mayr   HNS   and C. morschi Emery   HNS   . Three of the original seven cotypes are in the USNM; the remaining four have not been accounted for. Wheeler (1907) received one from Pergande, which may be in the AMNH; it was not located at MCZ in October, 1983.

Forel's (1901) C. rimosus dentatus   HNS   was also described from Mexican specimens, collected by Wheeler at Cuernavaca, Morelos. This form was compared only with C. rimosus   HNS   ; several cotypes are in the MCZ collections.

When Wheeler,1907: treated the North American fungusgrowing ants, he had available to him cotypes of both of these names. It is curious that he failed to recognize their co-identitv. He redescribed C. flavidus   HNS   from the cotype, compared it with C. wheeleri   HNS   , and asserted it to be '. .. intermediate in several respects between wheeleri   HNS   and rimosus   HNS   ...'

It may be that Wheeler's comparison of C. flavidus   HNS   with C. wheeleri   HNS   led Kempf (1966) to conclude that C. flavidus   HNS   is 'rather close to wheeleri   HNS   , with the same reticulate-punctate integument'. This, in fact is not true and in particular, the surface of the antennal scrobe is opaque and microgranulose, not at all shiny and reticulate as in C. wheeleri   HNS   . Also, unlike C. wheeleri   HNS   , the preocular carina is curved mesally in front of the eye. These two features, plus the absence of the mid-pronotal tubercles and the dilated and ventrally carinate metafemur, would place C. flavidus   HNS   in the dentatus   HNS   subgroup of the rimosus   HNS   group.

In Kempf s (1966) key to the species of the rimosus   HNS   group, the cotypes of C. flavidus   HNS   run directly and unequivocally to C. dentatus   HNS   . They match the figures and description supplied by Kempf, and agree with the cotypes of C. rimosus dentatus   HNS   in the MCZ collection. There is no doubt that the two are conspecific.

Of the three cotypes of C. flavidus   HNS   from the US N M, one bears a label, in Pergande's handwriting: ' Cyphomyromex flavidus   HNS   ( n. sp.) Type [lower left] and Perg. [lower right]'. This specimen has been marked Lectotype. The two remaining specimens are paralectotypes; one has been returned to the USNM and one is in the LACM.

In addition to specimens from Cuernavaca and Santiago Ixtcuintla. We have seen the following additional records. mexico: Cocula, Jalisco, Nov. 1923 (W.M. Mann; USNM); Estacion Biologia 'Chamela', Jalisco, 18 June 1984 (D. H. Feener; LACM); 75 km S. Culiacan, Sinaloa, 28 Aug. 1959 (L. A. Stange and A. S. Menke; LACM); Alamos, Sonora, 13 July 1976 (A. Mintzer; LACM). united states: Arizona, Tempe, Maricopa Co., 11 Nov. 1932 (Murphree; USNM:; Headquarters, 1600 ft elev., Organpipe Cactus National Monument, Pima Co., 1 Nov. 1952 (W.S. Creighton; LACM, Bloxton, Santa Cruz Co., 23 Sept. 1923 (W. M. Mann; USNM California: Indian Pass Rd., 500 ft elev., 7 mile E. Ogilbv Rd., Imperial Co., 7 May 1978 (R. R. Snelling and C. D. George. RRS No. 78-44; LACM), from midden of dolichoderine ant. Forelius foetidus   HNS   (Buckley), on hillside cactus scrub.