Niladmirara devergentia Fedotova, 2018

Fedotova, Z. A., 2018, New taxa of the gall midges of the tribe Asynaptini (Diptera: Cecidomyiidae, Porricondylinae) from the Russian Far East, Far Eastern Entomologist 362, pp. 1-12 : 7-9

Niladmirara devergentia Fedotova , sp. n.

Figs 10–21 , 27, 28

TYPE MATERIAL. Holotype: ♂ (slide 571/K-2/111): Russia: Southen Kuriles ,

Shikotan Island, Krabozavodskoje village, Malaise trap, 18–20.VIII 2012, leg. Yu.N.

Sundukov ( ZISP).

DESCRIPTION. MALE. Body pale brown, length 1.58 mm; length of wing

2.46 mm, width 0.78 mm; length of antenna 2.37 mm. Wide of eye bridge is 5-6

ommatidia. Head length 0.25 mm (without the length of mouth parts), 0.32 mm

(with mouth parts), that 2.9 times as long as height of head. Antennae 2+17-

segments. Scape 1.5 times as long as pedicel, pedicel 1.2 times as long as width.

Scape, pedicel and subcylindric flagellomeres uniformly sclrotized. F1 3.8 times as long as wide, basal enlargement 1.1 times as long as width, 1.1 times as long as neck, 1.1 times as long as F2. F2 3.4 times as long as wide, basal enlargement 1.6

times as long as width, 0.8 times as long as neck. F5 4.1 times as long as wide,

basal enlargement 1.5 times as long as width, 0.6 times as long as neck. Basal enlargement barrel-shaped, 1.8 times shorter than neck. F9 4.0 times as long as wide, basal enlargement 1.5 times as long as width, 0.6 times as long as neck. F15

3.0 times as long as wide, basal enlargement 1.9 times as long as width, 1.8 times as long as neck. Length of setae of middle whorl 2.7 times as long as flagellomere

( Fig. 19 ). F17 with short naerrowed apical projection fused with F16, together F17

and F16 1.1 times as long as F15. Mouthparts with prolonged labrum and round labellum. Palpi 4-segmented, with palpiger, its ratio 1:1.8:1.8:2.8, segments almost parallelsided.

Thorax slightly sclerotized, yellow-brown, 1.7 times as long as wide. Notum slightly darker than thorax, with three dark parts. Scutellum and notum around it is white. Anepimeron without pores. Legs 2.7–3.0 times as long as body and 1.8–1.9

times as long as wing. Legs lighter than body. Hind legs shorter than middle legs.

metula sp. n.; 24 – N. mucronata (Mamaev et Zaitzev) , comb. n. (after Mamaev & Zaitzev,

1998). 17 – F5; 18 – F15-17; 19 – F4; 20, 23 – gonostylus and apex of gonocoxites; 21, 22 –

tegmen, IX and X tergite and aedeagal rod; 24 – genitalia. Scale bars = 0.1 mm.

All femora slightly longer than tibia. Hind femora 1.2 times as long as tibia.

Fore femur 1.2 times as long as 2nd tarsal segment, middle 1.3 times as long as one,

hind 1.1 times as long as 2nd tarsal segment. Fore tarsus 1.1 times as long as middle one, slightly longer than hind one. 2nd segment of fore tarsus 15.3 times as long as

1st one and 10.7 times as long as 5th segment. Combined length of 3rd-5th tarsal segments of fore legs 0.8 times as long as 2nd segment. Claw in all tarsi with thin curwed dent, empodium slightly shorter than claw. Wing widest beyond middle, 3.2

times as long as wide, R 1+2 2.1 times shorter than wing. Part of R 1+2 from apex to point of joining it with Rs 2.3 times shorter than R 1+2. Apex of wing slightly narrowed.

Genitalia almost round. Gonocoxites narrow not enlarged distally, 2.4 times as long as wide, apically slightly narrowed. Gonostylus with very thin light claw (Figs

10, 20), 2.2 times shorter than gonocoxites, slightly enlarged medially, 2.4 times as long as wide. IX tergite distinctly narrower than tegmen and gonocoxite, 1.2 times wider than X tergite, both with wide round lobe and shallow round excision. Parameres long and thin, bifurcated, with long apodeme. Middle branch of parameres very strongly twisted at the end. Basal branch of parameres extremely long and thin, overlapping with middle branch. Genital rod long and thin, almost parallelsided, with lateral thin projections, right truncated apically, with long basal enlarging. Aedeagal capsule is trapezoidal apically ( Fig. 10 ) and rounded basally

( Fig. 21 ), visible on ventral side of fused gonocoxites. Aedeagus longer than IX tergite, round apically.

FEMALE unknown.

RELATIONSHIPS. New species closely related to N. metula sp. n. but differs from it by form of strongly curved overlapping parameres; slightly enlarged gonostylus with thin claw, pointed apically; by completely fused narrow gonocoxites; by presence long basal sclerotized enlarging on short aedeagal rod; presence of microtrichiae on basal enlargement of flagellomeres; by empodium shorter than tarsal claw.

ETYMOLOGY. Name of the new species is formed from the Latin devergentia for inclination or curvature in accordance with the shape of the paramers of genitalia.

Figures

Figs 10–16. Niladmirara devergentia sp. n., male holotype. 10 – genitalia; 11 – F9; 12 – F2; 13 – pedicel and F1; 14 – mouth parts and palpi; 15 – tarsal claw; 16 – wing. Scale bars =

Figs 17–24. Niladmirara spp., male holotypes: 17–21 N. devergentia sp. n.; 22–23 N.

Figs 25–28. Niladmirara spp., male holotypes. 25–26 N. metula sp. n.; 27–28 N.