A posterior fixigena with genal
spine (GIT 395-1) and a thoracic pleura (GIT 395-2) collected by the author in 2003 from sandy layers in the upper part of the Pakri Formation on the Pakri Peninsula.
The genus Clonacris is characterized by its nonstrumose ventral genal
Only metasomal terga I-II and sternum II have pale yellow bands (succeeding terga and sterna are obscurely paler apically); there are medium yellow spots on the propodeum, small yellow spots dorsally on the meso- and metapleura, the anterior pronotal carina is ventrally yellow and the posterior margin of the pronotum partially yellow; the forecoxae are yellow anteriorly; there are short genal
lines dorsally, the ventral clypeal margin and dorsally next to the eyes are yellow, the mandibles and scapes ventrally are darker yellow.
Body length (BL) of males was measured from the apex of the genal
process to the end of the subgenital plate; in the case of females, BL was measured from the apex of the genal
process to the distal part of the proctiger.
The differences are small and include the size of the eyes and course of the posterior edge of the genal
5 times longer than broad; arista short plumose, most aristal setae about 1/2 length of its basal diameter; facial ridge low and flat, lower facial margin slightly projecting, with anterior margin of frons in same vertical plane; gena sparsely covered with dark gray pruinosity, genal
height about 1/4 eye height; anterior margin of gena with 2-3 rows of upcurved subvibrissal setulae; postocular setae extending to ventral surface, the upper lateral area of the occiput hairy; proboscis slender, prementum shiny, about 3.
Anterior portion of vertex covered in very short, inconspicuous setae; genal
processes long, slender, pointed apically, contiguous in the middle (Fig.
5A, B); genal
region dorsad of bucculae with many long, erect, fine setae; head and pronotum with moderately long, sericeous, reclining, golden setae (Figs.
2 width of face; sides subparallel; extending indistinguishably into gena; with 1 or 2 strong genal
setae in addition to row of 2-4 shorter subvibrissal setae.
Genae (g) strongly reticulated, each reticulation with numerous inner microridges: genal
Pyrgotidae Schiner, 1868 are medium to large-sized (4-18 mm) acalyptrate flies, which usually can be recognized by a rather slender (often wasp-like) body, pictured or hyaline wings with short lobate cell bcu, oblique face, genal
groove prolongated postero-dorsally to the middle of occiput height, and stiletto-like aculeus that is much shorter than the oviscape.
3 times as wide as first flagellomere, without facial carina, lower 1/3 of facial ridge with small setae, lower parafacial brown, epistoma distinctly situated behind frontal angle in profile, gena black, with grey pruinosity, gena about 3/5 of eye in height, genal
hairs black, and postgena setae light-yellow, prementum without pruinosity, slightly shining, about 2.