Dissomphalus jubus 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 : 45-47

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

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Dissomphalus jubus Mugrabi & Azevedo

sp. nov.

Dissomphalus jubus Mugrabi & Azevedo , sp. nov.

( Figs 65–67, 116, 196–199)

Description. MALE. Body length 2.16 mm. LFW 1.6 mm. Maximum wing width 0.68 mm. Color. Head and mesosoma black; metasoma dark castaneous with castaneous spots.

Head. Mandible with two apical teeth. Clypeus with median lobe ill-defined; with one tooth, median tooth rounded; median carina absent. Ratio of first four antennal segments about 12:5:5:4. Frons strongly coriaceous, punctures small. LH 1.09 × WH, WF 0.65 × WH, WF 1.22 × HE, OOL 1.2 × WOT, DAO 0.4 × WOT, posterior ocelli distant from vertex crest 0.5 × DAO, frontal angle of ocellar triangle right, VOL 0.72 × HE. Vertex crest weakly convex. Occipital carina visible in dorsal view.

Mesosoma. Pronotal disc strongly coriaceous, anterior margin carinate. Notauli deep, incomplete, almost reaching posterior margin of mesoscutum, evenly narrow, converging posterad. Propodeal disc 0.65 × as long as wide; basal triangle rugulose, posterolateral area areolate; median carina posteriorly incomplete; lateral margins weakly convex, parallel; posterior carina indistinguishable from texture, medially sinuous. Lateral of propodeum mostly striate. Propodeal declivity mostly areolate.

Metasoma. Tergite II without tergal process ( Figs 65–67). Hypopygium with median stalk 0.6 × as long as hypopygeal plate; median stalk wide; corner of anterior margin rounded; lateral stalk of hypopygium 0.42 × as long as median stalk; posterior margin weakly concave; corner rounded (Fig. 116).

Genitalia ( Figs 196–199). Genital ring slightly produced, each half sinuous in dorsal view. Basiparamere with dorsal surface rectangular, much narrower than ventral surface. Paramere with basal area as wide as basiparamere apex, ventral margin slightly excavated forming a dorsad projection with apex rounded; apex subangulate; apical margin strongly concave in ventral view, not curved. Basivolsella setose, with two thick, basal and apical setae, basal seta distinct longer than apical seta. Cuspis biramous. Aedeagus 2.06 × as long as wide; dorsal body of aedeagus evenly wide, narrowing progressively apicad, lateral margin weakly convex, parallel, not curved dorsad, apex with one pair of outer lobe; base of dorsal body of aedeagus strongly sclerotized, triangular, with median region truncate; ventral ramus of aedeagus reaching half length of dorsal body, lateral margin of ventral ramus sinuous, much wider medially and base as narrow as apex. Apodeme not extending beyond genital ring.

FEMALE unknown.

Material examined. Holotype, ♂. THAILAND. Loei: Phu Ruea NP, Reservior 17°28.826’N 101°21.330’E, 931 m, Pan trap, 7–8.i.2007, Patikhom Tumtip leg., T1532 GoogleMaps . Paratypes: THAILAND. Malaise trap, Loei: Phu Ruea NP, Patikhom Tumtip leg. , 2 ♂ Nern Wibaak ditch, 17°29.907’N 101°20.483’E, 1196 m, 5–12.ii.2007, T1705 GoogleMaps ; 1 ♂ Nern Pitsawong , 17°29.676’N 101°21.093’E, 1168 m, 26.xi–2.xii.2006, T1126 GoogleMaps ; 1 ♂ Reservior , 17°28.826’N 101°21.330’E, 931 m, 19–26.i.2007, T1544 GoogleMaps ; 1 ♂ office, 17°28.805’N 101°21.242’E, 870 m, 5–12.vii.2006, T312 GoogleMaps ; 1 ♂ Phu Kradueng NP, Dry evergreen forest ( Pong neep forest unit), 16°56.589’N 101°42.074’E, 273 m, 4– 11.xi.2006, Sutin Glong-lasae leg., T792 GoogleMaps . Sakon Nakhon: Phu Phan NP, Sailom Tongboonchai leg., North of well, 17°3.543’N 103°58.452’E, 312 m GoogleMaps , 2 ♂ 5–11.i.2007, T1516 , 2 ♂ 11–17.i.2007, T1519 ; Behind office, 17°3.488’N 103°58.497’E, 318 m GoogleMaps , 1 ♂ 21–27.vii.2006, T205 , 1 ♂ 27.vii–2.viii.2006, T208 ; Behind national park office, 17°3.488’N 103°58.497’E, 318 m GoogleMaps , 1 ♂ 17–23.i.2007, T1524 , 1 ♂ 23–30.i.2007, T1527 ; Creek at northend of Huay Nam Pung Forest Unit, 16°55.789’N 103°54.158’E, 305 m GoogleMaps , 1 ♂ 13–19.xi.2006, Winlon Khongnara leg., T1099 , 1 ♂ 19–25.xi.2006, Sailom Tongboonchai leg., T1102 ; 4 ♂ Forest near Huay Nam Pung Dam 16°54.713’N 103°54.294’E, 289 m, 25.xi–2.xii.2006, Sailom Tongboonchai leg., T1104 GoogleMaps ; 2 ♂ Creek at entrance of Huay Nam Pung Forest unit, 16°54.630’N 103°54.266’E, 281 m, 13–19.xi.2006, Winlon Khongnara leg., T1097 GoogleMaps . Phitsanulok: 1 ♂ Thung Salaeng Luang NP, Mixed deciduous forest, 16°50.563’N 100°51.757’E, 481 m, 18– 25.ix.2006, Pongpitak Pranee leg., T930 GoogleMaps . Chaiyaphum: Tat Tone NP , 2 ♂ Dry dipterocarp forest near swamp at Sab somboon forest unit, 16°1.059’N 101°58.603’E, 674 m, 26.xi–3.xii.2006, Tawit Jaruphan leg., T1146 GoogleMaps ; 1 ♂ Water tank at Tat Fah waterfall, 15°56.468’N 102°5.855’E, 245 m, 26.iii–2.iv.2007, Tawit Jaruphan & Orawan Budsawong leg., T2357 GoogleMaps ; Pa Hin Ngam NP , 1 ♂ Thung Dok Kra Jeow in Dry evergreen, 15°38.438’N 101°23.576’E, 780 m, 7–13.i.2007, Katae Sa-nog & Buakaw Adnafai leg., T1457 GoogleMaps ; 1 ♂ Car park at Thung Dok Kra Jeow , 15°38.391’N 101°23.609’E, 750 m, 1–7.i.2007, T1453 GoogleMaps ; 2 ♂ ecotone between mix deciduous and dipterocarp forest, 15°38.132’N 101°23.922’E, 698 m, 1–7.ii.2007, T1643 GoogleMaps ; 1 ♂ Dry dipterocarp, 15°38.099’N 101°23.921’E, 698 m, 11–18.viii.2006, T445 GoogleMaps ; 2 ♂ Dry Dipterocarp forest at Lan Hin Nau , 15°37.683’N 101°23.323’E, 681 m, 1– 7.ix.2006, T847 GoogleMaps ; 1 ♂ Ecotone between mixed deciduous and dry dipterocarp forest, 15°34.913’N 101°25.658’E, 444 m, 16–22.xi.2006, T1034 GoogleMaps ; 1 ♂ Dry evergreen forest at waterfall, 15°34.802’N 101°25.990’E, 430 m, 16– 22.xi.2006, T1035 GoogleMaps . Ubon Ratchathani : Pha Taem NP , 1 ♂ East of Thung Luang in Dipterocarpus forest , 15°39.989’N 105°30.468’E, 238 m, 21–28.i.2007, Thongkam & Pakdee leg., T1484 GoogleMaps ; 1 ♂ Irrigation area west of Huay Pok forest unit, 15°37.321’N 105°36.982’E, 419 m, 6–13.x.2006, T719 GoogleMaps ; 1 ♂ Huay Pok waterfall, 15°37.321’N 105°36.982’E, 419 m, 27.x–3.xi.2006, Pornthip Tonsu leg., T730 GoogleMaps ; 1 ♂ First tier of Huay Sa Nhom waterfall, 15°27.407’N 105°34.867’E, 230 m, 11–18.xi.2006, Sorawit and Thongdee leg., T1056 GoogleMaps .

Variations. Body length between 1.21 and 2.24 mm; LFW between 1.14 and 1.60 mm; maximum wing width between 0.45 and 0.72 mm; frontal carina bifurcated, 2.00 × as long as clypeal median lobe; scrobiculate groove of anterior margin of pronotal disc absent; propodeal declivity with carina complete or groove shallow and complete.

Remarks. D. jubus sp. nov. is similar to D. kelsus sp. nov. because of the following characteristics: mandible with two apical teeth; clypeal apical margin evenly projected with one tooth, clypeal median carina absent; WF 1.22 × HE; anterior ocellus 0.18 × as wide as WF; pronotal declivity low; median region of genital ring with inclination angle about 90º; hypopygium short with median and lateral stalks thick; basiparamere evenly narrow; rounded; posterior margin concave with corners more projected; paramere divided; inner lobe of aedeagal dorsal body not visible in dorsal view and widely visible in ventral view; aedeagal dorsal body narrower basally; aedeagal ventral ramus short, reaching middle of aedeagal dorsal body, with four ventral lobes, narrower basally. D. jubus sp. nov. also has dark and thick seta throughout the body.

Distribution. Thailand (Loei, Sakon Nakhon, Phitsanulok, Chaiyaphum and Ubon Ratchathani).