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.