Forcipomyia (Thyridomyia) johannseni Thomsen, 1935

William L. Grogan, Jr., Hribar, Lawrence J., Murphree, C. Steven & Cilek, James E., 2010, New records of biting and predaceous midges from Florida, including species new to the fauna of the United States (Diptera: Ceratopogonidae), Insecta Mundi 2010 (147), pp. 1-59 : 19

Forcipomyia (Thyridomyia) johannseni Thomsen

Forcipomyia johannseni Thomsen, 1935: 286 (New York). Forcipomyia (Euforcipomyia) johannseni: Johannsen 1943: 778 . Forcipomyia (Synthyridomyia) johannseni: Wirth 1965: 124 . Forcipomyia (Thyridomyia) johannseni: Dow and Wirth 1972: 182 (revision of Nearctic Thyridomyia

Saunders; distribution); Wilkening et al. 1985: 517 (Florida records); Borkent and Grogan 2009: 10

(in Nearctic catalog; distribution).

Discussion. Thomsen (1935) described this species from adults that she reared from larvae collected from a wound on the bark of an elm tree in Ithaca, New York. The holotype female and allotype male are pinned, and, Dow and Wirth (1972) slide-mounted at least three paratypes from which they based their redescriptions and illustrations of this species. Subsequently, Wirth identified several specimens from Florida as this species including a male from Orchid Jungle, Dade Co., Florida. Wilkening et al. (1985) listed F. johannseni from Dade Co., based probably on these specimens and noted “This is the first published Florida records of this rare species. It was previously recorded only from New York.” Our examination of this Dade Co. male revealed that it is clearly not an example of F. johannseni as it lacks the characteristic palpal pit of this species, and, its genitalia do not match the illustrations by Thomsen (1935) and Dow and Wirth (1972). Furthermore, its wing length is only 0.63 mm, which is considerably smaller than what Dow and Wirth (1972) recorded for two male paratypes (0.82 mm). We discovered two females and two males mounted on slides in the FSCA from Vero Beach, Indian River Co., Florida that Wirth initially identified as F. johannseni , but he apparently subsequently crossed out that name and wrote in red pencil “tenuichela.” Of these four specimens, only one male is a specimen of F. tenuichela , and a female is a specimen of F. nodosa , however, the second female is a specimen of F. monilicornis . See accounts of these three species for details on these specimens. Because it is now doubtful that F. johannseni actually inhabits Florida, we have removed it from the ceratopogonid fauna of the state.