Amygdalops, ROHÁČEK J., 2008

ROHÁČEK J., 2008, Revision Of The Genus Amygdalops Lamb, 1914 (Diptera, Anthomyzidae) Of The Oriental, Australasian And Oceanian Regions, Acta Zoologica Academiae Scientiarum Hungaricae 54 (4), pp. 325-400 : 374-376

publication ID	https://doi.org/ 10.5281/zenodo.12584953
persistent identifier	https://treatment.plazi.org/id/A2710835-FF8A-8C1B-9B42-B192FC7BFAF2
treatment provided by	Felipe
scientific name	Amygdalops
status	sp. n.

Treatment

Amygdalops View in CoL sp. n. (c) near geniculatus

( Figs 124–128 View Figs 124–128 , 172 View Figs 171–174 )

Material examimed: MALAYSIA: Sabah: Kinabalu National Park, Poring , 570 m, 8.ix.1983, 1 female ; Sabah: 1 km S Kundasang , 1530 m, Malaise trap, 24.viii.1983, 1 female , all G. F. Hevel & W. E. Steiner leg. ( USNM, genit. prep.)

Description – Male unknown. Female. Closely resembling A. geniculatus but differing as follows. Darker and larger, total body length 2.81–2.94 mm. Occiput blackish brown, with some greyish microtomentum, particularly medially. Frons less shining because frontal triangle also somewhat greyish microtomentose (only ocellar triangle bare in the middle). Anterior fourth to third of frons darker ochreous. Marginal stripes of face, parafacialia and gena pale brown. Mouthparts with dorsal part and palpus brown as in A. geniculatus but proboscis proximally pale ochreous-brown, only distally yellow. Cephalic chaetotaxy as in A. geniculatus , subvibrissa somewhat weaker and palpus with a distinct ventral seta in the middle, in addition to a series of shorter ventral setulae proximally to it and 1 usual subapical seta. Eye convex, with longest diameter only 1.3 times as long as shortest one. Arista about 2.0 times as long as antenna.

Thoracic chaetotaxy and colouring as in A. geniculatus , the latter somewhat darker, particularly as regards the pale notopleural area and ventral part of pleuron. Legs similarly bicolourous as in A. geniculatus but all pale parts darker yellow and last segment of hind tarsus distinctly brownish darkened. Wing ( Fig. 172 View Figs 171–174 ) pattern similar to that of A. geniculatus but yet darker and preapical spot larger. Discal (dm) cell narrower. Wing measurements: length 2.78–2.84 mm; width 0.79–0.82 mm, Cs 3: Cs 4 = 1.92–1.93, r-m\dm-cu: dm-cu = 3.84–3.90. Haltere with brown stem and blackish brown knob.

Abdomen. Preabdominal terga dark brown as in A. geniculatus but T4-T5 (and also T6) with whitish yellow shortly lunette-shaped anterolateral spots. Preabdominal sterna also similar but less narrow (S5 as long as broad) and distinctly lighter coloured than those of A. geniculatus .

Postabdomen ( Fig. 124 View Figs 124–128 ) very similar to that of A. geniculatus . T6 with small anterolateral spots more distinct, whitish yellow. S6 slightly wider, with larger posterior unpigmented marginal area, less densely setose than in A. geniculatus . T7 yet narrower than in A. geniculatus , with 7th spiracle inside its anteroventral (simple) margin. S7 larger than that of A. geniculatus , with similar pattern, only anteriorly with somewhat different medial structure formed by a pair of blackish sickle-shaped markings and unpigmented area between them. T8 uniformly darker brown, more transverse. S8 similar to that of A. geniculatus . T10 similar in shape but darker pigmented laterally as well as anteriorly. S10 markedly narrower and more acute posteriorly than that of A. geniculatus . Internal sclerotization of genital chamber with 2 pairs of fused sclerites (medial pair narrow, dark, bent and provided with several posterodorsal tubercles ( Fig. 127 View Figs 124–128 ) in contrast to that of A. geniculatus ); annular sclerite slen- der and twisted and vaginal part densely spinulose. Ventral receptacle ( Fig. 128 View Figs 124–128 ) also similar to that of A. geniculatus but its proximal part shorter. Accessory gland granulose, on a slender petiole arising from a distally dilated and ringed duct ( Fig. 128 View Figs 124–128 ). Spermathecae very shortly pyriform or rather subspherical ( Fig. 125–126 View Figs 124–128 ), larger than those of A. geniculatus and with more robust blunt spines; duct cervix small and weakly sclerotized. Cerci ( Fig. 124 View Figs 124–128 ) distinctly longer and more slender than in A. geniculatus , shortly setose, with apical seta reduced to a small spine as in A. geniculatus .

Discussion – This new species is very similar and closely allied to A. geniculatus DE MEIJERE but differs from the latter in having the terminal segment of the hind tarsus brownish, the female T4-T6 with whitish yellow anterolateral spots, the S7 larger, the spermathecae very shortly pyriform and the cerci longer and more slender. It is left unnamed because only females are known.

Biology – Only two females were caught by means of Malaise traps, in VIII–IX.

Distribution – Malaysia (Sabah = N Borneo).