Amygdalops curtisi, ROHÁČEK J., 2008
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publication ID |
https://doi.org/ 10.5281/zenodo.12584953 |
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persistent identifier |
https://treatment.plazi.org/id/A2710835-FFA0-8C36-9B13-B5F2FBBFF8ED |
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treatment provided by |
Felipe |
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scientific name |
Amygdalops curtisi |
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sp. nov. |
Amygdalops curtisi View in CoL sp. n.
( Figs 58–71 View Figs 58–63 View Figs 64–71 , 166 View Figs 163–166 )
Type material: Holotype male, labelled: „ THAILAND, Thonburi Prov. , Mueng Dist, 7 May 1969, Manop, coll.-light” ( USNM, genit. prep.) . Paratypes: THAILAND: Udrontani Prov., Meung Dist. , light , 17.–20.vi.1959, 1 female; Thonburi, 23.xii.1958, 1 female, all Manop leg. ( USNM); Chiang Mai, Doi Suthep N.P., No. 26, along forest brook , 9.xi.2004, 1 female, L. Papp & M. Földvári leg. ( HNHM); Chiang Mai Prov /24, Mae Hia , 19.05.41N / 98.56.11E, 350 m , 25.xii.2003, 1 male; Sunat Thanai City, 9.07.24N / 99.20.37 E, 10.v.2003, 1 female, both P. Schwedinger leg.; Mae Hong Son Prov., Mae Hong Son, 19.30N / 97.97E, 340 m, 20.x.2000, 1 female, B. Merz leg. ( MHNG) GoogleMaps . TAIWAN: X1157, Tunghsiao, Miaoli , 7.iii.1996, 1 male, Kung-ju Lin leg. ( SMOC, dried from alcohol); X943, Distr. Taichung Hsien, Tachia Hsi river , between Tachia (N) and Chingshui (S), 24.21 N, 120.34 E, 6 km E’ coast, between costal road no 1 and railway line, river bank, swept, eclector GoogleMaps , 12.iii.1994, 1 female, Kung-ju Lin leg. ( ZSMC, dried from alcohol). All paratypes with genit prep .
Etymology – The species is named in honour of the late Curtis W. Sabrosky, a renowned dipterist, who had already recognized several unnamed Amygdalops species in the USNM collection long ago but did not describe them.
Description – Male. Total body length 1.71–1.83 mm. Resembling A. nigrinotum in outer appearance (holotype faded, reddish brown instead dark brown). Head about as high as long. Occiput entirely dark brown, microtomentose as in A. nigrinotum . Frontal triangle reaching to anterior third to fourth of frons. Sides of ocellar triangle with some microtomentum. Frons largely brown, only anterior fourth to third ochreous-yellow. Orbit brown, with anterior third paler ochreous-yellow, distinctly shining. Face ochreous-yellow, only slightly darker marginally. Mouthparts (including palpus) yellow. Cephalic chaetotaxy: vti markedly shorter than vte (often less than half of its length); oc weak, slightly longer than vti; 2 long ors, anterior robust but shorter than posterior; subvibrissa less than two-thirds of vi length; 5–7 peristomal setulae. Eye convex, posteriorly rather angular rounded, with longest diameter 1.5 times as long as shortest one. Gena and antenna as in A. nigrinotum .
Thorax with colouring and chaetotaxy as A. nigrinotum but differing as follows: prs reduced to microseta; 2 dc, anterior reduced to a weak setula (only slightly longer but thicker than dc microsetae) arising just in front of posterior dc; 2 sc, laterobasal finer but slightly longer than anterior dc; 2 relatively weak stpl. Legs yellow (femora, tibiae) to whitish yellow (coxae, trochanters, tarsi). f 3 with 5 short and thickened setae in distal third of posteroventral row. Wing ( Fig. 166 View Figs 163–166 ) with pattern and venation similar to those of A. nigrinotum , r-m situated in middle of dm cell or slightly in front of it. Wing measurements: length 1.78–2.02 mm; width 0.61–0.69 mm, Cs 3: Cs 4 = 1.72–1.79, r-m\dm-cu: dm-cu = 3.30–3.55. Haltere pale greyish brown, stem usually more yellowish.
Abdomen as in A. nigrinotum . Preabdominal terga dark brown, T4 with small to indistinct, T5 with larger yellow or ochreous anterolateral spot on each side. S6 paler than S7 and strongly ventrally shortened.
Genitalia. Epandrium relatively broad ( Figs 59–60 View Figs 58–63 ), setose as in A. nigrinotum ; anal opening narrowly pentagonal, acute-angled dorsally ( Fig. 59 View Figs 58–63 ). Cercus rather slender, projecting ventrally, shorter than gonostylus. Medandrium ( Fig. 59 View Figs 58–63 ) comparatively narrow, with slightly projecting corners. Gonostylus ( Figs 59–60, 62 View Figs 58–63 ) relatively large and wide, with hardly tapered and rounded apex and a distinct lateral keel; most of its outer side with dense micropubescence, only along anterior margin bare; inner side of gonostylus with short and weak setae. Hypandrium ( Fig. 61 View Figs 58–63 ) relatively slender, simple, with small unpigmented internal lobes; transandrium ( Fig. 58 View Figs 58–63 ) simple, wide but slenview. Scales: Figs 58, 62 View Figs 58–63 = 0.05 mm, others = 0.1 mm
der, with concave ventral margin; caudal process formed by a weak, ventrally forked sclerite. Pregonite ( Fig. 61 View Figs 58–63 ) low, only posteriorly ventrally bulging, with about 6 setae, 3 of them on posterior bulge. Postgonite ( Fig. 61 View Figs 58–63 ) slender, slightly bent, apically not very acute, with 1 microseta in the middle of its outer side; basal sclerite attached to postgonite small. Aedeagal part of folding apparatus attached to base of phallapodeme ( Fig. 63 View Figs 58–63 ) hardly darkened dorsally, covered by small polygonal tubercles and some spinulae (anteriorly and ventrally); connecting sclerite relatively robust, widest in the middle, but pale-pigmented and finely granulose. Basal membrane with dense tuberculiform spines between arms of caudal process ( Figs 58, 61 View Figs 58–63 ). Aedeagal complex ( Fig. 63 View Figs 58–63 ) with moderately slender but long phallapodeme, having shortly bifurcate base and apex with distinct lateral projections. Base of distiphallus bare. Saccus of distiphallus very voluminous, except for base and ventral sclerite membranous and provided with rich spinulae in distal half. Filum long, dark, very slender and formed by 2 curved stripe-like closely attached and distally attenuated sclerites terminating in slender membranous apex. Ejacapodeme very small, with somewhat pointed projection.
Female. Similar to A. nigrinotum unless mentioned otherwise. Total body length 1.98–2.22 mm. Wing narrower than in male on the average. Wing measurements: length 1.98–2.18 mm, width 0.59–0.65 mm, Cs 3: Cs 4 = 1.83–1.94, r-m\dm-cu: dm-cu = 3.30–3.89. Abdomen with T3-T6 with pale yellow anterolateral spot on each side; spots on T3 and T6 smaller, on T4 and T5 larger. Preabdominal sterna S3-S5 of almost the same size and width, also S6 similar, hardly wider than S5.
Postabdomen ( Figs 64, 67 View Figs 64–71 ). T6 only somewhat wider and not longer than T7, with dense short and thick setae, dark brown with ochreous but small anterolateral spots and unpigmented posterior margin. S6 much narrower than T7, whitish yellow anteriorly (on anteromedial lobe) and posteriorly and pale brownish in the middle, with fine setae. T7 dark brown, tapering posteriorly, anteriorly shallowly emarginate, its anterolateral corners extended on ventral side, embedding 7th spiracles and almost meeting medially (see Fig. 67 View Figs 64–71 ), similarly setose as T6 but only in posterior half. S7 small, narrow and similar to that of A. cuspidatus sp. n., tapered anteriorly, brown except for paler anteromedial stripe and posterior submarginal area, with fine setae. T8 paler brown than T7, plate-shaped, with rounded posterior corners and a few fine setae posteriorly. S8 dark brown, somewhat wider than S7, finely setulose, with usual posteromedial bulge and incision. T10 small and relatively short, pale-pigmented, with scattered microtomentum and a pair of longer posteromedial setae. S10 also paler than S8, wider than T10, micropubescent, with setulae at posterior margin. Internal sclerotization of genital chamber formed by a complex of fused pale brown sclerites ( Figs 68, 71 View Figs 64–71 ) being anteriorly dilated laterally; annular sclerite very thin and twisted several times; vaginal area finely spinulose (not visible in Figs 68, 71 View Figs 64–71 ). Ventral receptacle ( Fig. 70 View Figs 64–71 ) membranous, vesiculate, with a finger-shaped, ventrally directed, terminal projection. Spermathecae spherical, unusually large (markedly larger than in A. cuspidatus sp. n.), one larger than the other ( Figs 65–66 View Figs 64–71 ), each with short blunt spines around duct insertion; duct cervix relatively long. Cerci ( Fig. 64 View Figs 64–71 ) short, moderate, with short setae.
Discussion – This new species belongs to the A. cuspidatus subgroup but differs from related species in having paler (light greyish brown) halteres, a large and wide gonostylus with a broadly rounded apex and larger spermathecae. Its female S7 and long cervix of the spermathecal duct most resemble those of A. cuspidatus sp. n. but A. curtisi sp. n. has the female anterolateral corners of T7 extended ventromedially, S7 with unpigmented anteromedial narrow area and pale-pigmented S6.
Biology – Several specimens were collected at a light, another along a forest brook, in III, V–VI, X–XII.
Distribution – Thailand, Taiwan.
ites, lateral view. Scales: Figs 64, 67 View Figs 64–71 = 0.1 mm, others = 0.05 mm
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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