Revision of Thai Dissomphalus Ashmead, 1893 (Hymenoptera, Bethylidae), with description of twenty four new species
MUGRABI, DANIELE F.
AZEVEDO, CELSO O.
Zootaxa
2013
2013-05-22
3662
1
1
73
Mugrabi & Azevedo
Mugrabi & Azevedo
[151,636,151,176]
Insecta
Bethylidae
Dissomphalus
GBIF
Animalia
Hymenoptera
40
41
Arthropoda
species
hetus
sp. nov.
( Figs 57–59, 113, 188–191) Description.MALE. Body length 1.67 mm. LFW 1.56 mm. Maximum wing width 0.65 mm. Color. Head black; mesosoma dark castaneous; metasoma dark castaneous with castaneous spots. Head.Mandible with three apical teeth. Clypeus with median lobe ill-defined; with one tooth, median tooth rounded; median carina distinctly incomplete apically, straight in profile or nearly so. Ratio of first four antennal segments about 9:5:3:4. Frons weakly coriaceous, punctures small. LH 1 × WH, WF 0.62 × WH, WF 1.29 × HE, OOL 1.25 × WOT, DAO 0.5 × WOT, posterior ocelli distant from vertex crest 0.25 × DAO, frontal angle of ocellar triangle right, VOL 0.64 × HE. Vertex crest strongly convex. Occipital carina visible in dorsal view. Mesosoma.Pronotal disc weakly coriaceous, anterior margin carinate. Notauli shallow, incomplete, not reaching posterior margin of mesoscutum, evenly wide, converging posterad. Propodeal disc 0.88 × as long as wide; basal triangle rugulose, posterolateral area polished; median carina anteriorly incomplete; lateral margins straight, parallel; posterior carina well-defined, with median concavity. Lateral of propodeum mostly imbricate. Propodeal declivity mostly strigate. Metasoma.Tergal process with very shallow, subcircular and sublateral pair of depressions; depressions 0.54 × as long as tergite II, diverging posterad, distant each other 4 × maximum transverse diameter, with setae very short and dorsad on latera area, without pair of tubercles, with laterad tuft of setae ( Figs 57–59). Hypopygium with median stalk 0.56 × as long as hypopygeal plate; median stalk narrow; corner of anterior margin angular; lateral stalk of hypopygium 0.33 × as long as median stalk; posterior margin weakly concave; corner rounded (Fig. 113). Genitalia( Figs 188–191). Genital ring produced, each half sinuous in dorsal view. Basiparamere with dorsal surface much wider apicad, much narrower than ventral surface. Paramere with basal area as wide as basiparamere apex, ventral margin slightly excavated forming a projection with apex truncate in lateral view and subangulate in dorsal view; apical margin subangulate in ventral view, not curved. Basivolsella setose, with three thick and short setae. Cuspis biramous. Aedeagus 2.66 × as long as wide; dorsal body of aedeagus narrower apically, narrowing progressively apicad, lateral margin weakly convex, converging apicad, wholly slightly curved dorsad, apex with one pair of outer lobe; base of dorsal body of aedeagus strongly sclerotized, triangular, with median region angulate; ventral ramus of aedeagus surpassing half length of dorsal body, reaching base of apical lobe of dorsal body, lateral margin of ventral ramus sinuous, much wider medially and apex much narrower than base. Apodeme extending beyond genital ring. FEMALE unknown.
Material examined. Holotype, ♂. THAILAND. Loei: Phu Ruea NP, Subhnonghin, 17°28.772’N 101°21.308’E, 860 m, Malaise trap, 19–26.vii.2006, Nukoonchai Jaroenchaileg., T316. Paratypes: THAILAND. Malaise trap, Loei: 1 ♂ Phu RueaNP, Naturetrail, 17°30.740’N 101°20.650’E, 1353 m, 12–19.ix.2006, Nukoonchai Jaroenchaileg., T828; Phu KraduengNP, Savannahin pine forest, 16°53.092’N 101°47.413’E, 1257 m, 1 ♂ 28.xii.2006– 3.i.2007, Sutin Gongla-saeleg., T1220; 3–9.i.2007, 1 ♂ Thanongsak Srisa-adleg., T1223. Phetchabun: 1 ♂ Nam NaoNP, Heliport, 16°43.156’N 101°35.118’E, 890 m, 18–25.xii.2006, Noopean Hongyothileg., T1433. Ubon Ratchathani: 1 ♂ Pha TaemNP, Huay Pokwaterfall, 15°37.321’N 105°36.982’E, 419 m, 27.x–3.xi.2006, Pornthip Tonsuleg., T730. Chaiyaphum: 1 ♂ Pa Hin NgamNP, Thung Dok Kra Jeow in Dryevergreen, 15°38.438’N 101°23.576’E, 780 m, 7–13.i.2007, Katae Sa-nog& Buakaw Adnafaileg., T1457. Nakhon Nayok: 1 ♂ Khao YaiNP, Moistevergreen forest near the reservoir, 14°27.119’N 101°21.482’E, 699 m, 5–12.xi.2006, Wirat Sookkholeg., T991. Variations.Body length between 1.67 and 2.01 mm; LFW between 1.55 and 1.71 mm; maximum wing width between 0.65 and 0.72 mm; depression of tergal process elliptical, with anterior setosesetose tuft.
Remarks. Dissomphalus hetus sp. nov.is similar to D. gionus sp. nov., D. davus sp. nov.and D. paulus sp. nov.because of the following characteristics: aedeagal dorsal body rectangular; ventral surface of aedeagal dorsal body with long and very thick seta; paramere almost as long as basiparamere. FIGURES 54–68.Metasoma, 54– 56, Dissomphalus zethus sp. nov., 54, metasoma in dorsal view; 55, tergal process of metasoma in dorsal view; 56, tuft of setae of tergal process in dorsal view; 57–59, D. hetus sp. nov., 57, metasoma in dorsal view; 58, tergal process of metasoma in dorsal view; 59, tuft of setae of tergal process in dorsal view; 60–61, D. joelus sp. nov., It is also similar to However, D. hetus sp. nov.exhibits more similarities with D. paulus sp. nov., including the following characteristics: hypopygium about 2.00 × as wide as long, median stalk short with rounded apex, posterior margin strongly concave with rounded corners, which are projected more than median region; genital ring slightly convex, median region with inclination angle about 45º, aedeagal dorsal body rectangular, converging apicad, apical constriction weak, ventral surface with long and very thick seta; paramere almost as long as basiparamere. However D. hetus sp. nov.differs from D. paulus sp. nov.as follows: depressions of tergal process sub-circular, very shallow, distant each other 4.00 × their maximum transverse diameter, tubercle absent; genital ring convex; basiparamere with dorsal surface shorter than ventral surface; paramere with ventral surface slightly divided, apical margin sub-angulate in ventral view; aedeagal ventral ramus narrow, with margin sinuous, narrowing apicad, apex angulate, surpassing half length of aedeagal dorsal body; aedeagal apodeme wide. In addition, this species exhibits thick black seta across the body, and the posterior transverse carina of the propodeal disc invades the median region of the declivity, where it acquires a concave shape and thus falsely seems to be a carina of the declivity rather than the disc.
Distribution. Thailand( Loei, Phetchabun, Ubon Ratchathani, Chaiyaphumand Nakhon Nayok).
2006-07-19
2006-07-26
2006-07-19
T
Phu Ruea NP & Nukoonchai Jaroenchai
Thailand
860
17.479534
Subhnonghin
1
101.35513
40
41
T316
1
1
Loei
holotype
Thailand
THAILAND
40
41
1
paratype
2006-09-12
2006-09-19
2006-09-12
T
Phu Ruea & Nukoonchai Jaroenchai
Thailand
1353
17.512333
Nature
1
101.34417
40
41
T828
1
1
Loei
paratype
2006-12-28
2007-01-03
2006-12-28
T
Sutin Gongla-sae
Thailand
1257
16.884867
Savannah
1
101.790215
Phu Kradueng
40
41
T1220
1
1
paratype
[854,1432,1412,1436]
2007-01-03
2007-01-09
2007-01-03
T
Thanongsak Srisa-ad
Thailand
40
41
T1223
1
1
paratype
2006-12-18
2006-12-25
2006-12-18
T
Nam Nao & Noopean Hongyothi
Thailand
890
16.719267
Heliport
1
101.5853
40
41
T1433
1
1
Phetchabun
paratype
2006-10-27
2006-11-03
2006-10-27
T
Pha Taem & Pornthip Tonsu
Thailand
419
15.622017
Huay Pok
1
105.61636
40
41
T730
1
1
Ubon Ratchathani
paratype
2007-01-07
2007-01-13
2007-01-07
T
Pa Hin Ngam & Katae Sa-nog & Buakaw Adnafai
Thailand
780
15.640634
Thung Dok Kra Jeow in Dry
1
101.39294
40
41
T1457
1
1
Chaiyaphum
paratype
2006-11-05
2006-11-12
2006-11-05
T
Khao Yai & Wirat Sookkho
Thailand
699
14.451983
Moist
1
101.35803
40
41
T991
1
1
Nakhon Nayok
paratype