Lichtwardtia minuscula (Parent, 1934)

Grichanov, I. Ya., 2019, NEW SPECIES AND NEW RECORDS OF LICHTWARDTIA ENDERLEIN, 1912 (DIPTERA: DOLICHOPODIDAE) FROM TROPICAL AFRICA, Far Eastern Entomologist 387, pp. 7-32 : 19-23

publication ID

https://doi.org/ 10.25221/fee.387.2

persistent identifier

https://treatment.plazi.org/id/03CD87D5-FF88-504D-FF15-FAB40E72FE84

treatment provided by

Felipe

scientific name

Lichtwardtia minuscula (Parent, 1934)
status

 

Lichtwardtia minuscula (Parent, 1934)

Figs 23 View Figs 21–27 , 30 View Figs 28–33 , 37 View Figs 34–41 , 46 View Figs 42–46 , 55 View Figs 52–57 , 65 View Figs 62–69

MATERIAL EXAMINED. Tanzania: Mikumi NP env., 7.385°S, 37.015°E, 520 m GoogleMaps , 24-

25.II 2017, 1♂, N. Vikhrev [ ZMUM] .

REDESCRIPTION. Male. Head. Frons metallic greenish blue; face entirely white pollinose; one strong vertical, one short postvertical, a pair of strong ocellar setae present; lower postocular setae white; ventral postcranium with 1–2 long dirty white setae and several light ensis sp. n.; 44 – L. emelyanovi Grichanov ; 45 – L. fractinervis (Parent) ; 46 – L. minuscula

(Parent).

cilia; eyes with short hairs; face glabrous; face almost parallel-sided, narrowest at upper third, slightly widening at clypeus; clypeus bulging, slightly convex ventrally, not reaching lower margin of eyes; ratio of its minimal width to height 16/31; antenna mostly orange;

postpedicel black in distal half, subtriangular, inconspicuously longer than high, angular apicodorsally, with short hairs; arista-like stylus middorsal, black, sparsely pubescent, with hairs 2 times longer than basal diameter of stylus; length ratio of scape to pedicel to postpedicel to stylus (1st and 2nd segments), 14/8/16/11/39; palpus small, dirty yellow, with short black setae; proboscis brown.

Thorax. Mesonotum metallic blue-violet; pleura dark blue, whitish grey 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 black hairs; scutellum with 2 strong setae and 2 very short lateral hairs.

Legs mostly yellow; fore coxa yellow, mid coxa black, hind coxa yellow with black spot;

apical segments of fore tarsus brown; mid and hind tarsi black from tip of basitarsus; femora without long hairs; fore coxa with black hairs and several long apical setae; fore tibia with 2

strong dorsals, 1 posterior seta, slightly longer than diameter of tibia, 3 strong apical setae;

fore tarsus simple, fore basitarsus with short basoventral seta; mid femur with 1 subapical anterior seta; mid tibia with 3 anterodorsal, 2 posterodorsal, 1 anteroventral and 5 apical setae; hind femur with one anterodorsal prepapical seta; hind tibia simple, with 3 anterodorsal, 3 posterodorsal, 3-4 short ventral, 3 apical setae; hind basitarsus with 1 basoventral, 1

apical short setae, 1 strong dorsal seta, about 1/3 as long as basitarsus. Tibia and tarsomere

(from first to fifth) length ratio: fore leg: 74/36/15/12/9/13, mid leg: 106/50/26/21/16/16,

hind leg: 118/40/46/29/20/16.

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, 24/22; M 1+2 broken in middle of distal part, joining costal vein just before wing tip; R 4+5 and distal part of M 1 slightly divergent; 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 to dm-m to distal part of M 4, 70/10/37/27/35; anal vein distinct,

1+2

almost reaching to wing margin; anal lobe well developed; anal angle obtuse; lower calypter yellow, with black setae; halters yellow.

Abdomen metallic blue-black, whitish pollinose laterally, with black hairs and marginal setae; 8th segment black, with sparse black hairs; epandrium black, as long as 4th-5th tergites combined, 2 times longer than high, swollen basally, slightly narrowed distad, concave ventrally in middle, with broad projection distoventrally; hypandrium basoventral, broad,

reaching apex of epandrium, with large subapical dorsal tooth; phallus long, with small dorsal tooth before apex; one small epandrial seta at base of hypandrium; 3 strong epandrial setae on distoventral projection; epandrial lobe absent; surstylus yellow, bilobate; ventral lobe broad, with 2-3 thick spines and 3 simple setulae; dorsal lobe of surstylus broad, longer than ventral, 2/3 as long as cercus, with apicoventral and apicodorsal projections and distal emargination, with several short subapical setulae; postgonite broad, shorter than surstylus;

cercus dirty yellow, black on distal half, rounded-quadrate, as wide as long, serrate distally,

with curved cilia not longer than diameter of cercus.

MEASUREMENTS (in mm). Body length 2.5; antenna length 0.7; wing length 2.6; wing width 0.9; hypopygium length 0.7.

DIAGNOSIS. L. minuscula is a sibling species with L. ghanaensis sp. n. (see below),

together with L. nikitai sp. n. and L. emelyanovi Grichanov forming minuscula group of species (see key above), which is peculiar in hind basitarsus bearing reduced dorsal seta, at most 1/3 as long as basitarsus. L. minuscula differs reliably from L. ghanaensis sp. n. in male cercus apically broad and subquadrate rather than narrow and pointed; hypandrium with large subapical dorsal tooth.

49 – L. nikolaevae Grichanov ; 50 – L. oromiaensis sp. n.; 51 – L. tikhonovi Grichanov.

DISTRIBUTION AND NOTES. Type locality: Chad: Demraou, rives du Moyen Chari .

Vanschuytbroeck (1964) recorded the species from Tanzania by single female. Here I confirm its presence in Tanzania and exclude the species from Ghana (misidentification; see below).

ZMUM

Zoological Museum, University of Amoy

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Dolichopodidae

Genus

Lichtwardtia