This new species is unique in this genus by the combinations of having 5 pairs of long setae on pronotum, the ultrashort chapped craspedum on posterior margin of abdominal tergites
, and the shape and relative locations of setae on tergite
Metasoma slender, tergite
I 2.6 times as long as posteriorly broad, with convergent lateral carinae present only anteriorly; sternite I with an apically acute, thorn-like ventral projection posteriorly, tergite
II-IV 1.2-1.4 times as long as posteriorly broad with presence of two smooth tubercles.
Abdominal syntergite 1+2 and tergite
3 without median marginal setae; tergites
4 and 5 with a row of median marginal setae; discal setae lacking on syntergite 1+2 and tergites
3 and 4; abdominal setulae gradually increasing in size posteriorly, more visible on sides of the tergites
4 and 5.
The diagnostic characters of the species are the enlarged dorsal-longitudinal ridges on the basal half of the ovipositor, and the setose sclerotized posterior margin of the male seventh tergite
. Setae are occasionally present on the eighth tergite
(Gagne & Etienne 1996).
The abdominal apex (particularly the medial apical sclerotized processes of ninth abdominal tergite
) also resembles that in Gorochov (2005).
Van Veen (2004) provided the diagnostic characters for the male as: lateral margins of abdomen black, at least on tergite
2 or completely black, vertex triangle covered with distinctly black or black and yellow hairs as against the similar species Paragus abrogans Goeldlin, 1971 which was listed from the Indian sub-continent by Ghorpade (2015).
T2 with two small basal foveae about 0.15 as long as tergite
, between foveae with a longitudinal carina not longer than foveae, otherwise smooth.
Body: General color and external characters as in male, with body and wings slightly larger, antenna slightly shorter, fourth abdominal tergite
dark brown with irregular spots, sometimes orange-yellow on basal half and brown on apical half, fourth abdominal sternite dark brown, sometimes uniformly black.
consistent: wing venation ; spiracle of eighth abdominal segment (female)--opening on the eighth tergite
versus on membrane (see ; also see Table 1).
Dactylochelifer is widely distributed in the Holarctic region  and can be recognized by the following combination of features: presence of coxal sacs situated within the coxae of the fourth pair of legs of males, each sac with a well-developed atrium (Figure 7(a)); tarsus with simple subterminal seta (Figures 7(c) and 7(d)); presence of a median seta on each half tergite
; tarsal claws not divided; and female with one cribriform plate (Figure 11(e)) .