Ulmeritoides haarupi (Esben­Petersen) Esben-Petersen, 2005

Peters, J. G., Flowers, R. W., Hubbard, M. D., Domínguez, E. & Savage, H. M., 2005, New records and combinations for Neotropical Leptophlebiidae (Ephemeroptera), Zootaxa 1054, pp. 51-60 : 53-54

Ulmeritoides haarupi (Esben­Petersen) comb. n.

( Figures 1–2 )

Thraulus haarupi Esben­Petersen, 1912:337 ; Navás 1917:188. Deleatidium haarupi ; Ulmer, 1920:115; 1938:105; 1943:15. Atalophlebioides haarupi ; Traver, 1946:423.

Ulmeritus (Ulmeritus) haarupi ; Traver, 1959:5; Thew, 1960:123; Domínguez, 1991:160. Deleatidium vittatum Thew, 1960:130 . syn. n.

Ulmeritoides fidalgoi Domínguez, 1995:23 . syn. n.

Esben­Petersen (1912) originally described Thraulus haarupi from Bompland, Argentina, from a damaged female which lacked forelegs and cerci. He suggested that this represented a new genus but postponed any action because he did not know the male. Traver (1959) described a female from Uruguay that she attributed to this species although it differed in some characters from the description of T. haarupi— particularly size, absence of a median longitudinal line on the mesonotum, coloration of the prothorax (not discussed by Esben­Petersen), and shading on the basal, ventral margin of the metathoracic femur. This species was also treated in Deleatidium by Ulmer (1920, 1938, 1943) and Atalophlebioides by Traver (1946) based on the fact that it was not Thraulus . In 1956, Traver established the genus Ulmeritus , which she later divided into three subgenera ( Traver 1959): Ulmeritus , Ulmeritoides , and Pseudulmeritus . She placed T. haarupi in Ulmeritus s.s. based on the hind wing. Ulmeritoides was raised to generic status in 1991 and the subgenus Pseudulmeritus was synonymized with Ulmeritoides ( Domínguez 1991) .

In 1960, Thew described Deleatidium vittatum from Nova Teutônia, Santa Catarina State, Brazil, from two female imagos. He gave no illustrations, but did give a detailed description of coloration. This description matches Traver's (1959) female " U. haarupi " from Uruguay, except that Thew did not mention the heavier basal shading on the metathoracic femur described by Traver.

In 1995, Domínguez described another species, Ulmeritoides fidalgoi , from male and female imagos and nymphs, also from Bompland, Argentina.

We (J.G. Peters and R.W. Flowers) have examined the holotypes of Thraulus haarupi and Deleatidium vittatum , and four paratype females of Ulmeritoides fidalgoi . Venation of the holotype of Thraulus haarupi is as illustrated by Esben­Petersen (1912), but all color has faded. The holotype of Deleatidium vittatum is an Ulmeritoides in good condition and the wing venation, reddish brown costal strip, and heavy costal cross veins are still clear; however, body colors are faded. Thus, it is necessary to use the original descriptions by Esben­Petersen (1912) and Thew (1960) for most details of coloration. The paratypes of Ulmeritoides fidalgoi retain a good color pattern, including caudal filaments with dark annulations as described by Thew for Deleatidium vittatum . The range of forewing length (9 mm to 11 mm) for described and examined specimens of Ulmeritoides fidalgoi encompasses the sizes of Ulmeritus haarupi and Deleatidium vittatum , and the costal wing markings are identical for all. All described female pronota appear to fall within the range of U. fidalgoi , although these details were not given by Esben­Petersen (1912). The presence of a fine longitudinal dark brown line on the mesonotum of U. haarupi represents a variation found in U. fidalgoi , and the median longitudinal suture may appear lighter or darker depending on source of illumination. The position of the costal projection and length of vein Sc of hind wings differs in males and females; in the hind wing of U. haarupi this falls within the variation visible for U. fidalgoi ( Fig. 1–2 ). Traver’s (1959) concept of U. haarupi and Thew's description of Deleatidium vittatum match Ulmeritoides fidalgoi exactly—with the single exception that Thew did not mention the extent of shading on the ventral base of the metathoracic femora. As the extent of this shading seems to be the only character separating these species, and it is often undescribed or variable, we consider U. haarupi , D. vittatum , and U. fidalgoi to be conspecific, with Ulmeritoides haarupi the senior name.

Figures

FIGURES 1 – 9. Figs. 1 – 2: Hind wings from two female paratypes of Ulmeritoides fidalgoi. Figs. 3 – 9: Hagenulus marshalli sp. n., male: 3, forewing; 4, hind wing (proportional); 5, hind wing enlarged; 6, lateral outline of head and thorax showing position of hind wing; 7, genitalia, ventral view; 8, detail of penis lobe; 9, lateral view of abdominal segments 4 – 6. Concave longitudinal veins stippled in Figs. 1 – 5.