Lichtwardtia moseikoi Grichanov, 2020

Grichanov, I. Ya., 2020, New species and new records of Lichtwardtia Enderlein, 1912 (Diptera: Dolichopodidae) from Australasian and Oriental regions, Far Eastern Entomologist 399, pp. 1-13 : 4-6

Lichtwardtia moseikoi Grichanov , sp. n.

http://zoobank.org/NomenclaturalActs/ B0687AC0-56A7-49D3-A873-44A77B9E1E5F

Figs 1 – 8

TYPE MATERIAL. Holotype – ♂, Indonesia: Papua, Merauke env., 8.55º S,

140.43º E, 9 – 15.XII 2014, leg. N. Vikhrev [ ZMUM].

DESCRIPTION. Male. Head. Frons metallic greenish violet, weakly pollinose;

face entirely white pollinose; one strong vertical, one short postvertical, a pair of strong ocellar setae present; lower postocular setae white; ventral postcranium with

2 long white setae and several light cilia; eyes with short hairs; face glabrous; face almost parallel-sided, narrowest at upper third, slightly widening at clypeus;

clypeus angular ventrally in middle, not reaching lower margin of eyes; ratio of its minimal width to height 23/75; antenna mostly yellow-orange; postpedicel black in distal half, subtriangular, slightly longer than high (25/20), right-angular apicodorsally, with short hairs; arista-like stylus middorsal, black, sparsely pubescent, with hairs 2-4 times longer than basal diameter of stylus; length ratio of scape to pedicel to postpedicel to stylus (1st and 2nd segments), 18/11/25/14/55;

palpus small, dirty yellow, with black seta, short light and dark hairs; proboscis brown.

Thorax. Mesonotum metallic dark-blue-violet, weakly brownish pollinose; pleura greenish-black, whitish pollinose; 5 strong dorsocentral setae with several microscopic hairs in front of the 1st pair, 2 rows of acrostichals; proepisternum with

1 strong black seta above fore coxa and several short hairs; scutellum with 2 strong setae and 2 very short lateral hairs.

Legs mostly yellow; fore coxa yellow, mid coxa black with yellow apex, hind coxa mostly yellow, with large black spot; hind femur black at apex; hind tibia black at apex; tarsi black from tip of basitarsus; femora without long hairs; fore coxa with black hairs and several long apical setae; fore tibia with 1 long and 2 small anterodorsal,

1 long and 1 small dorsal, 1 posterior seta, more than 2 times as long as diameter of tibia, 2 short apical and 1 long posteroventral apical setae; fore tarsus simple, fore basitarsus with short basoventral seta; mid femur with 1 subapical anterior seta; mid tibia with 4 anterodorsal, 2 posterodorsal, 1 anteroventral and 5 apical setae; hind femur with one anterodorsal prepapical seta; hind tibia simple, with 4 anterodorsal,

4 posterodorsal, 1-2 ventral, 3 apical setae; hind basitarsus with 1 basoventral, 1 apical short setae, 1 strong dorsal seta, half as long as basitarsus. Tibia and tarsomere

(from first to fifth) length ratio: fore leg: 106/47/22/17/13/13, mid leg: 133/70/36/

31/20/21, hind leg: 161/60/62/47/31/25.

5 – postabdomen; 6 – hypandrium and phallus; 7 – cercus, outer view; 8 – surstylus.

Wing evenly greyish; costa simple; R 1 reaching to first third of wing; R 2+3 and

R 4+5 straight, slightly divergent at apex; ratio of part of costa between R 2+3 and R 4+5

to this between R 4+5 and M 1+2, 33/21; M 1+2 broken in middle of distal part, joining costal vein right before wing tip; R 4+5 and distal part of M 1 parallel; crossveins m-m

and dm-m straight, almost perpendicular to corresponding longitudinal veins; ratio of distal part of M 1 to m-m to distal part of M 1+2 to dm-m to distal part of M 4,

74/12/53/34/37; anal vein distinct, almost reaching to wing margin; anal lobe well developed; anal angle obtuse; lower calypter yellow, with black setae; halters yellow.

Abdomen metallic bronze-black, white pollinose laterally, with black hairs and marginal setae; 8th segment black, with sparse black hairs; epandrium black, small,

nearly as long as 5th-6th tergites combined, about 2 times longer than high, swollen basally, slightly narrowed distally, convex ventrally, rounded distally; hypandrium basoventral, narrow, reaching to apex of epandrium, without teeth; phallus long,

filiform, with 1-2 irregular dorsal rows of about 10 minute denticles at apex; one small epandrial seta at base of hypandrium; distoventral epandrial lobe reduced to 2

small setae far from apex; surstylus yellow, bilobate, with long and narrow lobes;

ventral lobe stick-shaped, with 1 broad triangular apical bristle, 1 thick subapical spine and 4 simple subapical setae; dorsal lobe of surstylus clavate, slightly longer than ventral, with small apicoventral projection and few subapical setae; postgonite long and narrow, simple, slightly shorter than surstylus; cercus yellow, black along distal and ventral margins, ovate, 1.3 times longer than wide, weakly dentate distally and ventrally, with double row of straight marginal bristles and setae.

MEASUREMENTS (in mm). Body length 3.8; antenna length 1.0; wing length

3.6; wing width 1.1; hypopygium length 1.3.

Female. Unknown.

DISTRIBUTION. Australasian: Indonesia (Papua).

ETYMOLOGY. The species is named after the Russian entomologist Dr. A.G.

Moseiko (St. Petersburg).

DIAGNOSIS. The new species is close to L. formosana Enderlein , differing from the latter in hind femur being black at apex, ventral surstylus bearing strong basoventral spine reaching apex of surstylus, postgonite being thin and simple. L.

formosana is distinguished by hind femur being entirely yellow, ventral surstylus having no basoventral spine, postgonite being broad, deeply bifurcate at apex (Tang et al., 2018: Figure 20). In contrast to the Oriental species, the Australasian L. moseikoi sp. n. and L. melanesiana (Bickel) males have rather long and thin surstylus and postgonite. L. moseikoi sp. n. well differs from L. melanesiana in the shape of cercus and in the absence of long basoventral spine on ventral surstylus (Bickel,

2008: Figure 1A ).

Figures

Figs 1–8. Lichtwardtia moseikoi sp. n. 1 – habitus; 2 – head head; 3 – antenna; 4 – wing;