Empis pachymorion Frey 1935

• Main Author: Shamshev, Igor V.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2020
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Empididae; Empis; Empis pachymorion; Kamchatskiy; Kamchatka; Kamtschatka
• Online Access: https://zenodo.org/record/3812098; https://doi.org/10.5281/zenodo.3812098

pachymorion Frey, 1935: 4 (Empis (Anacrostichus) Current name. Empis (Anacrostichus) pachymorion Frey, 1935. Type locality (by lectotype designation): Russia, Kamchatka. Notes on the type series. Frey described this species after the female sex only. He noted the following material: “ 2 ♀ -Exx., Kamtchatka ”. Only one syntype was found in NHRS, it agrees with the original description. Type material examined. LECTOTYPE (here designated in order to fix identity of the species) ♀ (Fig. 1), la- belled (Fig. 2): “ Kamtschatka / Malaise ”; “1917”; “Spec. typ.”; “ Empis / pachymorion / n. sp. [hand-written by Frey] R. Frey det.”; “ Lectotypus / Empis / pachymorion Frey, 1935 / design. Shamshev, 2020” (NHRS). Additional material examined. RUSSIA, Irkutskaya Province: UstKut; Fl. Lenas; B. Poppius; 503; Empis (Anacrostichus) pachymorion n. sp., R. Frey det. (1 ♀, MZH). Kamchatskiy Territory: Kamtschatka, Malaise (5 ♂, NHRS). Diagnosis. Mid-sized species (body length about 5 mm) of the E. nitida group, with dichoptic eyes in both sexes, long antennal postpedicel and raptorial hind legs, without acrostichals; highly sexually dimorphic. Male: thorax greyish pruinose, legs extensively yellowish, wing faintly brownish, halter yellow. Female: thorax brown pruinose, legs usually extensively brownish, wing and halter brown. Re-description. Male (Fig. 3). Wing length 5.4–5.7 mm. Head black, with only black setae; frons, face, ocellar triangle and occiput densely greyish brown pruinose. Eyes dichoptic, ommatidia equally small. Frons below ocellar tubercle nearly as broad as distance between inner margins of posterior ocelli, slightly broadened toward antennae; with black marginal setulae. Face slightly broader than frons above antennae, bare; clypeus shiny. Ocellar triangle with 2 moderately long setae and several setulae. Occiput with numerous moderately long strong setae on upper part (including postoculars) and fine setae on lower part. Antenna black; scape elongate, nearly 2.5X longer than pedicel, both with short setulae; ...