Drymeia Meigen, 1826

Sorokina, Vera S. & Pont, Adrian C., 2022, The genus Drymeia Meigen, 1826 (Diptera: Muscidae) in Kyrgyzstan: new records and new species, European Journal of Taxonomy 823, pp. 158-172 : 167-169

Key to the Kyrgyzstan species of Drymeia Meigen, 1826

Males of D. cilitarsis Sorokina & Pont, 2015 and D. grandis Sorokina & Pont, 2015 have not yet been found in Kyrgyzstan, but they are included in the key, since, according to the unidentified female, one of them may belong to the Kyrgyzstan fauna.

Males

1. 3 pairs of postsutural dorsocentral setae ........................................................................................... 2

– 4 pairs of postsutural dorsocentral setae ........................................................................................... 3

2. Mid femur curved, with 2 strong anteroventral setae on apical half, basal half of femur bare on anteroventral and posteroventral surfaces ............................................... D. valentinae ( Pont, 1975)

– Mid femur with rows of anteroventral and posteroventral setae, strong setae absent ........................ ............................................................................................................... D. firthiana ( Huckett, 1965)

3. Prealar seta strong. Mid tibia usually with 3–4 anterodorsal setae, rarely with 1–2 ........................ 4

– Prealar seta absent. Mid tibia without or with 1–2 short anterodorsal setae .................................... 5

4. Mid femur with anteroventral setae restricted to a group of 5–6 setae on apical fifth, and with a row of long posteroventral setae on basal ⅔ which at base are twice as long as diameter of femur. Hind femur without posteroventrals, only with fine posterior setae at base ... D. fasciculata ( Stein, 1916)

– Mid femur with rows of fine anteroventral and posteroventral setae, with fine and dense posterior to posteroventral setae which are as long as diameter of femur. Hind femur with a dense row of posteroventrals ........................................................................... D. gymnophthalma (Hennig, 1963)

5. Eye densely long-haired. Mid femur with a row of very long posteroventral setae, 2.3–2.5 × as long as diameter of femur. Black species ..................................................................... D. ziegleri sp. nov.

– Eye bare or with very short hairs. Mid femur without or with only short, fine posteroventral setae. Grey species ...................................................................................................................................... 6

6. Anepimeron bare. Mid femur with a group of slender curved setae at extreme base of anteroventral surface and with 1–2 short ventral spinules on basal third .................... D. setibasis ( Huckett, 1965)

– Anepimeron setulose. Mid femur different ....................................................................................... 7

7. Tip of abdomen with a dense brush of slender black setae and setulae, caudally directed. Mid tibia without anterodorsals. Eye very short haired ............................ D. cilitarsis Sorokina & Pont, 2015

– Tip of abdomen without such a brush of setae and setulae, at most with several caudally directed setulae on hypopygium. Mid tibia with 1–2 anterodorsals. Eye bare ...... D. grandis Sorokina & Pont, 2015

Females

The female of D. ziegleri sp. nov. is not known, but we have included it in the key based on the male

characters.

1. Prealar seta present and strong ......................................................................................................... 2

– Prealar seta absent or weak, shorter than 2 nd notopleural seta .......................................................... 5

2. 4 postsutural dorsocentral setae; parafacial with an undusted shining patch near base of antenna .. 3

– 3 postsutural dorsocentral setae; parafacial entirely dusted ............................................................. 4

3. Arista appearing almost bare, the longest hairs shorter than its basal diameter; body grey, subshining; proboscis long, labella small; hind femur only with 1 weak posteroventral seta at base; fore tarsomere 5 normal, not flattened ........................................................................... D. fasciculata ( Stein, 1916)

-– Arista pubescent, longest aristal hairs twice as long as its basal diameter; body black, shining; proboscis short and thick, labella large; hind femur with 1 weak posteroventral seta at base and with 2–3 posteroventral setae on basal third; fore tarsomere 5 moderately flattened ...................................................................................... D. gymnophthalma (Hennig, 1963)

4. Mid femur with 2anteroventrals on apical third, with 1anteroventral and 1posteroventral setae on basal third. Body brownish-grey dusted, sometimes with an olive tinge. Wing yellow at base. Lower facial margin projecting slightly forward beyond level of antennal base ........ D. firthiana ( Huckett, 1965)

– Mid femur only with 2 anteroventrals on apical third, otherwise without anteroventrals or posteroventrals. Body black, subshining. Wing black at base. Lower facial margin projecting well beyond level of antennal base .................................................................. D. valentinae ( Pont, 1975)

5. Anepimeron setulose. Body whitish-grey dusted; thorax with 2–3 narrow brown vittae, sometimes indistinct. Lower facial margin not projecting slightly forward beyond level of antennal base. Mid femur with 1–2 fine anteroventrals on basal quarter .......................................................................... ........................................... D. grandis Sorokina & Pont, 2015 ; D. cilitarsis Sorokina & Pont, 2015

– Anepimeron bare. Body yellowish-grey dusted, with an olive tinge. Lower facial margin projecting slightly forward beyond level of antennal base. Mid femur with 3–4 strong anteroventrals on basal third ........................................................................................................ D. setibasis ( Huckett, 1965)

Remark

The unknown female of D. ziegleri sp. nov. will probably key out to couplet 5 (with D. setibasis ) and will be recognised by the very black body.