Timulla coahuila Krombein, 1951

Waldren, George C., 2024, Taxonomic notes on velvet ants of the genus Timulla Ashmead, 1899 (Hymenoptera: Mutillidae) in the United States of America and Canada, Insecta Mundi 2024 (55), pp. 1-10 : 7

Timulla coahuila Krombein, 1951 , new status

Timulla (Timulla) navasota nebulosa Mickel 1937a: 29 , pl. II, fig. 7 and 9. Holotype ♂ (UMSP). Junior primary homonym of Timulla (Trogaspidia) fortuita nebulosa Mickel 1935b: 263 according to Krombein (1951: 771).

Timulla (Timulla) navasota coahuila Krombein 1951: 771 . New name for Timulla (Timulla) navasota nebulosa Mickel, 1937 due to being preoccupied by Timulla (Trogaspidia) fortuita nebulosa Mickel, 1935 as a junior primary homonym.

Timulla navasota cohahuila [sic]: Pagliano et al. 2020: 267. Misspelling.

Remarks. In the remarks of his description of Timulla navasota nebulosa Mickel, 1937 , Mickel (1937a) noted for the female: “ Nebulosa differs from navasota in having the thorax more strongly narrowed posteriorly and in the much darker color of the abdomen, tibiae, and tarsi.” It is surprising that Mickel (1937a) considered the strongly posteriorly-narrowed “thorax” (i.e., mesosoma) to be a subspecies-level character, as the relative widths of the female mesosoma in dorsal view were considered to be an important species-level character by Mickel (1937a, 1938) for other species of Timulla . I also consider this to be an important species-level character. Based on the unique mesosomal shape in dorsal view of females of T. navasota coahuila and T. navasota navasota , the former subspecies is given new status as a full species, Timulla coahuila Krombein, 1951 .

Material examined ( Timulla navasota coahuila ) (1 ♀). Non-type(s): USA: Texas: Jeff Davis Co.: Fort Davis, 6–10 mi. W on TX-166, 5000 ft., 15–23.Jul.1948, H.E. Evans (1♀ – MCZ –MCZ-ENT 00709355).

Material examined ( Timulla navasota navasota ) (2 ♀). Non-type(s): USA: Texas: Cameron Co.: Brownsville, 08.May.1935, J.N. Knull (1♀ – OSUC – OSUC 0098496). Hidalgo Co.: 30.Mar.1960, D.J. & J.N. Knull (1♀ – OSUC – OSUC 0098498).

In total, 253♂ and 45♀ of Timulla coahuila Krombein, 1951 were examined ( AMNH, ASUHIC, AUEM, CASC, CNC, CSCA, CUIC, DGMC, EMUS, FMNH, GCWC, INHS, LSAM, MCZ, MSBA, NMNH, NMSU, OSAC, OSUC, PMNH, ROME, SEMC, TAMU, TTUZ, UAIC, UCDC, UCFC, UCRC, UMMZ, UTIC, WFBM, WIRC, WSU).

In total, 46♂ and 8♀ of Timulla navasota ( Bradley, 1916) were examined ( AMNH, CASC, CSUC, CUIC, DGMC, EMUS, GCWC, INHS, KSUC, MCZ, MEM, NMNH, OSAC, OSUC, SEMC, SFAC, SHSU, TAMU, UAIC, UGCA, UTIC).