Dissomphalus daneus Mugrabi & Azevedo

MUGRABI, DANIELE F. & AZEVEDO, CELSO O., 2013, Revision of Thai Dissomphalus Ashmead, 1893 (Hymenoptera, Bethylidae), with description of twenty four new species, Zootaxa 3662 (1), pp. 1-73 : 30-31

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https://doi.org/ 10.11646/zootaxa.3662.1.1

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Dissomphalus daneus Mugrabi & Azevedo

sp. nov.

Dissomphalus daneus Mugrabi & Azevedo , sp. nov.

( Figs 34–36, 106, 165–167)

Description. MALE. Body length 3.5 mm. LFW 2.66 mm. Maximum wing width 1.14 mm. Color. Head and mesosoma black; metasoma dark castaneous with castaneous spots.

Head. Mandible with five apical teeth. Clypeus with median lobe subtrapezoidal; median tooth angulate or nearly so; median carina complete apically or nearly so, straight in profile or nearly so. Ratio of first four antennal segments about 16:7:6:6. Frons strongly coriaceous, punctures large. LH 0.94 × WH, WF 0.66 × WH, WF 1.39 × HE, OOL 1.23 × WOT, DAO 0.35 × WOT, posterior ocelli distant from vertex crest 1 × DAO, frontal angle of ocellar triangle right, VOL 0.64 × HE. Vertex crest straight. Occipital carina not visible in dorsal view.

Mesosoma. Pronotal disc strongly coriaceous, anterior margin ecarinate. Notauli deep, incomplete, almost reaching posterior margin of mesoscutum, widening posterad, converging posterad. Propodeal disc 0.52 × as long as wide; basal triangle rugulose, posterolateral area rugulose; median carina complete; lateral margins strongly convex, converging posterad; posterior carina well-defined, convex. Lateral of propodeum mostly striolate. Propodeal declivity mostly strigate.

Metasoma. Tergal process with deep, subtriangular and sublateral pair of depressions; depressions with external lateral margin higher than internal lateral margin, 0.81 × as long as tergite II, diverging posterad, distant each other 2.55 × maximum transverse diameter, with setae short and dorsad on lateral area; small pair of tubercles placed on center of depression, evenly wide in longitudinal section, low, entirely laterad, with broad pit on top with short and laterad tuft of setae ( Figs 34–36,). Hypopygium with median stalk 1.3 × as long as hypopygeal plate; median stalk narrow; corner of anterior margin angular; lateral stalk of hypopygium 0.13 × as long as median stalk; posterior margin angularly concave; corner angulate ( Fig. 106).

Genitalia ( Figs 165–167). Genital ring produced, each half convex in dorsal view. Basiparamere with dorsal short and apical setae. Cuspis biramous. Aedeagus 5 × as long as wide; dorsal body of aedeagus wider basally, narrowing abruptly apicad, lateral margin strongly convex basally, parallel, not curved dorsad, apex with two pair of outer lobes; dorsal pair 1.15 × as long as wide, slightly arched, with apex obliquely truncate and ventrad, outer lateral with laminar process, elliptical, with lateral surface wider than dorsal and ventral surfaces; ventral pair tubular, long, slightly arched, laterad, with apical margin subangulate and surface smooth, shorter than dorsal lobe of aedeagus; base of dorsal body of aedeagus strongly sclerotized, weakly concave, with median region bilobate; ventral ramus of aedeagus surpassing half length of dorsal body, reaching base of apical lobe of dorsal body, lateral margin straight, evenly narrow and base as narrow as apex. Apodeme extending beyond genital ring.

FEMALE unknown.

Material examined. Holotype, ♂. THAILAND. Kanchanaburi: Khuean Srinagarindra NP, Tha Thung-na / Chong Kraborg , 14°29.972’N 98°53.035’E, 210 m, Malaise trap, 5–12.iii.2009, Boonnam & Phumarin leg., T4778 GoogleMaps . Paratypes: THAILAND. Malaise trap, Chiang Mai: Doi Phahompok NP, Headquarter , 19°57.961’N 99°9.355’E, 569 m GoogleMaps , 1 ♂ 11–18.vii.2007, Wongchai.P. leg., T2945 ; 1 ♂ 18–25.vii.2007, Seesom.K. leg., T2947 ; 1 ♂ 1–7.viii.2007, Wongchai.P. leg., T2949 . 1 ♂ Doi Inthanon NP, Vachiratharn Falls , 18°32.311’N 98°36.048’E, 700 m, 22.vii–2.viii.2006, Y. Areeluck leg., T116 GoogleMaps . Lampang: Chae Son NP, Bunruen Kwunnui & Acharaporn Sukpeng leg., 1 ♂ behind visitor center, 18°50.075’N 99°28.433’E, 421 m, 1–8.ix.2007, T2832 GoogleMaps ; 1 ♂ behind hotspring, 18°50.009’N 99°28.684’E, 461 m, 1–8.ix.2007, T2809 GoogleMaps ; 1 ♂ behind the camp site#2, 18°49.871’N 99°25.889’E, 488 m, 1–8.viii.2007, T2803 GoogleMaps . Phitsanulok: 1 ♂ Thung Salaeng Luang NP, Staff house ( Gang Sopa waterfall), 16°52.677’N 100°49.257’E, 486 m, 14-21.x.2006, Pongpitak Pranee leg., T761 GoogleMaps . Suphanburi: Pu Toei NP , 1 ♂ Pinus merkusii forest, 14°58.4’N 99°26.017’E, 763 m, 1-7.ix.2008, Wangkum;P. leg., T3565 GoogleMaps ; Phu Toei hill top/ road, 14°57.320’N 99°26.972’E, 650 m, Saunbua. L. leg. GoogleMaps , 1 ♂ 24-31.vii.2008, T3134 , 1 ♂ 1–8.viii.2008, T3136 , 1 ♂ 16-23.viii.2008, T3139 , 1 ♂ 24-31.viii.2008, T3137 ; Huai Mongpae /red road, 14°56.985’N 99°26.780’E, 300 m, 16–23.vii.2008, Saunbua.L. leg. GoogleMaps , 1 ♂ T3117 ; 2 ♂ T3117 ; 24-31.viii.2008, 3 ♂ T3122 , 1 ♂, T3120 ; Huai Mongpae / stream, 14°56.981’N 99°26.733’E 300 m, Saunbua.L. leg. GoogleMaps , 1 ♂ 8-15.viii.2008, T3126 , 1 ♂ 1-8.viii.2008, T3128 . Kanchanaburi: Khuean Srinagarindra NP, Huay Mae Kamint, Somboon & Daorueng leg., 1 ♂ Headquarter , 14°38.441’N 98°58.889’E, 240 m, 16-23.iv.2009, T4783 GoogleMaps , 4 ♂ Tourist center, 14°38.312’N 98°59.643’E 210 m, 14- 21.v.2009, T4746 GoogleMaps ; Behind tourist center, 14°38.155’N 98°59.85’E 210 m, Chatchawan & Boonkam leg. GoogleMaps , 2 ♂ 22- 28.viii.2008, T3421 ; 2 ♂ 15-22.viii.2008, T3420 ; 2 ♂ 28.viii-4.ix.2008, T3422 ; 7 ♂ Tourist center, 14°38.136’N 98°59.837’E, 210 m, 11-18.vii.2008, T3432 GoogleMaps ; Huai Mae Kamint , 14°29.972’N 98°53.035’E GoogleMaps , 15 ♂ 50 m, /SW of Tourist center, 25.ix-2.x.2008, T 3444, 500 m, W of HQ, 1 ♂ 25.ix-2.x.2008, T3448 , 1 ♂ 8-25.ix.2008, T3447 ; Chong Kraborg , 14°29.972’N 98°53.035’E, 210 m GoogleMaps , 2 ♂ 4-11.ix.2008, Boonnam & Phumarin leg. T3431 , 1 ♂ 15- 22.viii.2008, Wasanchai leg. T3428 ; Tha Thung-na / Chong Kraborg , 14°29.972’N 98°53.035’E, 210 m, Boonnam & Phumarin leg. GoogleMaps , 1 ♂ 25.xii.2008 - 1.i.2009, T4437 , 1 ♂ 11-18.xii.2008, T4441 . Petchaburi : 2 ♂, Kaeng Krachan NP, Panernthung /ladies washroom, 12°47.831’N 99°27.369’E 970 m, 25.vii-1.viii.2008, Sirichai & Chusak leg. T4355 GoogleMaps . Prachuab Khiri Khan : Khao Sam Roi Yot NP, Amnad & Yai leg. , 5 ♂ Checkpoint 1/ Ban Hua Tan Thaeo , 12°13.059’N 99°58.384’E, 26.x-2.xi.2008, T4127 GoogleMaps ; 1 ♂ 200 m, S of Checkpoint 1, 12°12.789’N 99°58.662’E, 19- 26.x.2008, T4105 GoogleMaps ; 2 ♂ Laem Sala beach, 12°12.234’N 100°0.767’E, 6–13.vii.2008, T3012 GoogleMaps .

Variations. Body length between 2.73 and 4.10 mm; LFW between 2.09 and 2.70 mm; maximum wing width between 0.91 and 1.14 mm; frons with punctures irregularly sparse; vertex crest slightly concave; lower mandibular tooth angulate; median carina of clypeus straight; setae of tuft of tergal process long; notaulus complete; propodeal disc weakly to strongly striate.

Remarks. Dissomphalus daneus sp. nov. is similar to D. nepalensis because of the following characteristics: convex genital ring with angle of median region about 45º, aedeagal dorsal body wider basally, narrowing sharply apicad; dorsal outer lobe with laminar process; ventral outer lobe tubular and long, about 0.5 × as long as dorsal outer lobe; aedeagal ventral ramus with lateral margin straight, base as narrow as apex. However, D. daneus sp. nov. differs from D. nepalensis as follows: hypopygium with apex of median stalk abruptly dilated, lateral margin sinuous, posterior margin with sub-angulate invagination, corners angulate; aedeagal dorsal outer lobe with laminar process, its lateral surface wider than dorsal and ventral ones; ventral outer lobe slightly arched laterad, with apical margin sub-angulate; aedeagal ventral ramus surpassing middle of dorsal body and reaching base of apical lobe of dorsal body.


Tavera, Department of Geology and Geophysics