Dyscritobaeus comitans Perkins

Tortorici, Francesco, Caleca, Virgilio, Noort, Simon Van & Masner, Lubomir, 2016, Revision of Afrotropical Dyscritobaeus Perkins, 1910 (Hymenoptera: Scelionidae), Zootaxa 4178 (1), pp. 1-59: 11-20

publication ID

http://doi.org/10.11646/zootaxa.4178.1.1

publication LSID

lsid:zoobank.org:pub:D00D1335-72DF-4D8B-97E1-45642CF38AC8

persistent identifier

http://treatment.plazi.org/id/03B0A92B-0562-0049-FF6F-4C84FB90FA13

treatment provided by

Plazi

scientific name

Dyscritobaeus comitans Perkins
status

 

Dyscritobaeus comitans Perkins 

( Figs 2 View Figure , 7, 9, 10, 13, 16, 26, 28, 38a, 38b, 45, 46, 47, 48, 49, 50, 51, 52)

urn:lsid:zoobank.org:act:533F0DAB-45ED-428E-A38A-2C3D3 FFBAbout FFB 7475 http://hol.osu.edu/index.html?id=4274

Dyscritobaeus comitans  Ƌ: Perkins (1910): p. 622, original description. Dyscritobaeus comitans  Ƌ: Kieffer (1926): p. 156, description.

Dyscritobaeus comitans  Ƌ: ( Swezey 1929): p. 284.

Dyscritobaeus comitans  Ƌ: Johnson (1992), p. 370, catalogued

Dyscritobaeus  sp. (b) ♀: Mineo & Caleca (1992): Fig. 4 View Figure , p. 13.

Dyscritobaeus comitans  Ƌ: Caleca & Mineo (1995): Fig. I, p. 10.

Dyscritobaeus  sp. (b) ♀: Caleca & Mineo (1995): Fig. IV, p. 12., Fig. VI (6, 7), p. 16 Dyscritobaeus comitans  Ƌ: O’Connor & Ashe (2012): p. 315, keyed. Dyscritobaeus cerosus ♀: O’Connor & Ashe (2012)  : p. 314, original description, syn. nov.

We provide a redescription to present a comparative uniform treatment of all species included in this paper.

Based on a comparison of the holotypes of D. comitans  (male) and D. cerosus O’Connor et Ashe  (female), we consider D. cerosus  to be a junior synonym of D. comitans  ; differential characters separating the two specimens are linked to sexual dimorphism, similar to the degree of sexual dimorphism present in other Dyscritobaeus  species. The specimen used for the description of the male was selected by one of the authors (V. Caleca) who compared it with the holotype.

Diagnosis. The absence of a preoccipital lunula, in combination with a dorsally sharp occipital carina ( Figs 2 View Figure , 16), two character states shared with D. ndokii  , distinguish these two species from the other Afrotropical species. A smooth frontal depression in combination with the presence of longitudinal striae on T2 distinguish D. comitans  from D. ndokii  .

Description. Male: Sulawesi Utara: Dumoga Bone Nat., 0°34’N, 123°54’E; 7–25 Jun ’85, Edge of rainforest, 220m, leg. A. D. Austin; ( WINCAbout WINC); Ƌ Homotype Dyscritobaeus comitans Perkins  , compared by V. Caleca, 1990.

Length of the body: 0.7 mm

Head. Coriaceous, frontal depression with a smooth area starting from the interantennal process and surpassing mid eye height; central keel reaching 1/2 the height of the eye ( Fig. 26 View Figure ). Fan-like striation in malar area from oral foramen to eye margin, striation evident only in genal area ( Fig. 50 View Figure ). Head width: height: 0.3: 0.27: 0.14 mm. Malar sulcus length: 0.09 mm. Eye width: height = 0.09: 0.12 mm. OOL: LOL: POL = 0.07: 0.05: 0.09 mm. Mandibles bidentate with almost equal teeth.

Antenna. Radicle yellow, scape and A2 yellow, A3–A12 brown; A12 twice as long as A11.

Mesosoma. In dorsal view, mesonotum and scutellum brown with posterior mesoscutellar margin yellowish; propodeum brown ( Fig. 48 View Figure ). In lateral view, pleurae brown with metapleural carina yellowish ( Fig. 50 View Figure ).

In dorsal view mesonotum and scutellum imbricate; in lateral view speculum and femoral depression with furrow, posterior mesepimeral area anteriorly delimited by a mesepimeral sulcus with a crenulate furrow; dorsal and ventral metapleural area smooth anteriorly with crenulate depression with rugae posteriorly ( Fig. 50 View Figure ). Metapleural carina with two pointed projections, one adjacent to propodeal spiracle and second one at posterior margin ( Fig. 48, 50 View Figure ). Metascutellum visible in dorsal view and metanotal spine small, slightly surpassing propodeum ( Figs 48 View Figure , 52 View Figure ). Mesonotum length 0.15 mm, width 0.3 mm; scutellum length 0.07 mm, width 0.21 mm.

Wings. Fore wing hyaline, surpassing metasoma; st length 0.08 mm and ratio st: pm: mg: sm: ww: lw: af: pf = 1: 0.9: 0.3: 2.4: 2.3: 6.6: 0.3: 0.6; angle st-pm= 20° as in Fig. 38b View Figure .

Metasoma. T1 and T2 yellow, gradually transforming to brown in the other tergites. On T1 a pair of longitudinal submedial carinae are aligned with the metapleural carinae and separate lateral coriaceous area from median area with costae started with basal grooves ( Figs 48 View Figure , 52 View Figure ); T2 with foveolate anterior margin; costulate to imbricate, specillum absent, costae curved in the middle of posterior margin of T2 ( Fig. 52 View Figure ).

Female: Sulawesi Utara: Dumoga Bone Nat., 0°34’N, 123°54’E; 7–25 Jun ’85, Edge of rainforest, 220 m, leg. A. D. Austin; ( WINCAbout WINC); ♀ Dyscritobaeus comitans Perkins  , det. V. Caleca.GoogleMaps 

Length of the body: 0.73 mm

Head. Color brown. Coriaceous, frontal depression with a smooth area starting from the interantennal process and surpassing mid eye height; central keel reaching mid eye height ( Fig. 45 View Figure ). Fan-like striation in malar area from oral foramen to eye margin, striation evident just in genal area ( Figs 46, 49 View Figure ). Preoccipital lunula absent (Fig. 16). Measure of the head width: height: length = 0.31: 0.27: 0.16 mm. Malar sulcus length: 0.09 mm. Measure of eye width: heigth = 0.1: 0.14 mm. OOL: LOL: POL = 0.06: 0.05: 0.1 mm. Mandibles bidentate with almost equal tooth ( Fig. 46 View Figure ).

Antenna, radicle, A1 and A2 yellowish to brown; A3 to A12 brown ( Fig. 45 View Figure ). A1 length: 0.18 mm; A2 as long as A3+ A4. Clava six-segmented; A11 is longer as A12 ( Fig. 45 View Figure ). Claval sensilla formula 1:2:2:2:1:0.

Mesosoma. In dorsal view, mesonotum and scutellum brown with posterior mesoscutellar margin yellowish; propodeum brown. In lateral view, pleurae brown with metapleural carina yellowish ( Fig. 47 View Figure ).

In dorsal view mesonotum and scutellum imbricate; in lateral view speculum and femoral depression with furrow, posterior mesepimeral area anteriorly delimited by a mesepimeral sulcus with a crenulate furrow; dorsal and ventral metapleural areas smooth anteriorly with crenulate depression with rugae posteriorly ( Fig. 49 View Figure ). Metapleural carina with two pointed projections, one adjacent to propodeal spiracle and second one at posterior margin ( Figs 47, 49 View Figure ). Metascutellum visible in dorsal view and metanotal spine small, slightly surpassing propodeum ( Figs 47 View Figure , 51 View Figure ). Mesonotum length 0.16 mm, width 0.29 mm; scutellum length 0.1 mm, width 0.22 mm.

Wings. Fore wing hyaline, surpassing metasoma; st length 0.07 mm and ratio st: pm: mg: sm: ww: lw: af: pf = 1: 0.8: 0.5: 3.3: 3.2: 8.3: 1.8: 2.2; angle st-pm= 25° as in Fig. 38a View Figure .

Legs yellow and coxae brown.

Metasoma. In dorsal view, tergites brown, in ventral view sternites brown, laterotergites yellowish. On T1 a pair of longitudinal submedial carinae are aligned with the metapleural carinae and separate lateral coriaceous area from internal costae started with basal grooves ( Figs 47 View Figure , 51 View Figure ). T2 with foveolate anterior margin; costulate to imbricate, specillum elongate in the middle of T2, longitudinal costae converging to posterior margin of specillum as in Figs 13, 51.

Comment and variability. Eighty-five specimens were examined from Africa, Indonesia, Japan, Malaysia, Nepal and Hawaii.

In females, the anterior fringe of fore wings is long and the specillum is elongate, both of which are genderlinked characters. In all observed females the specillum has a variable shape, particularly at the anterior and posterior margins, it can be short with narrower margins (Figs 13, 51) or longer with wider margins (Fig. 7); the width of the specillum also varies from 9% to 16% of T2 width.

Female length from 0.72 mm to 0.74 mm.

Male length from 0.69 mm to 0.71mm.

Distribution. This species is recorded from the Australian, Palearctic, Oriental, Afrotropical Regions.

Material examined. Holotype. Ƌ: USA: Hawaii: Honolulu, Bates st., 1904, Swept R. CLP., (BPBM), [1513]. Homotypes Dyscritobaeus comitans Perkins  , compared by V. Caleca, 1990: INDONESIA: Sulawesi Utara: Dumoga Bone Nat. Pk; 0°34'N, 123°54'E, edge of rainforest, 220m, 23Ƌ, 7–25.vi.1985, A.D. Austin, (WINC) [USNMENT01223488, 0 1223489, 0 1223000, 0 1223001, 0 1223002, 0 1223003, 0 1223004, 0 1223005, 0 1223006, 0 1223007, 0 1223009, 0 1223010, 0 1223011, 0 1223012, 0 1223013, 0 1223014, 0 1223015, 0 1223016, 0 1223017, 0 1223018, 0 1223019, 0 1223020, 01223022], (1Ƌ, wings on slide, Figs 38b View Figure ); MALAYSIA: Pahang, Genting H’lands, 1Ƌ, 1986/12, A.D. Austin, (WINC) [USNMENT01223021].

INDONESIA: Sulawesi, forest side of the River Toraut, N0°34', E123°54', 15-18.ix.1985, Malaise trap, Patrick Ashe leg. ( NMID) [ NMINHAbout NMINH:2016.6.1] (holotype of D. cerosus  )

INDONESIA: Curug : 1♀, 8Ƌ, 1980/02/07  – 1980/02/14, H. R. Gillespie, pan trap, (CNCI), [CNC 394575, 471604, 471605, 471606, 471607, 471608, 471609, 471610, 471611]; 1♀, 2Ƌ, 1980/04/01 – 1980/04/07, H. R. Gillespie, pan trap, (CNCI), [CNC 471612, 471613, 471614]; 7♀, 1980/04/08 – 1980/04/14, H. R. Gillespie, pan trap, (CNCI), [CNC 471615, 471616, 471617, 471618, 471619, 471620, 471621]; 4Ƌ, 1980/04/14 – 1980/04/21, H. R. Gillespie, pan trap, (CNCI), [CNC 471622, 471623, 471624, 471625]; 1Ƌ, 1981/01/04 - 1981/01/11, H. R. Gillespie, pan trap, (CNCI), [CNC 471626]; 1♀, 1981/01/24 – 1981/02/12, H. R. Gillespie, pan trap, (CNCI), [CNC 471663]; 3♀, 1981/02/24 – 1981/03/10, H. R. Gillespie, pan trap, (CNCI), [CNC 471660, 471661, 471662]; 1♀, 1981/03/23 – 1981/04/06, H. R. Gillespie, (CNCI), [CNC 471627]; 1Ƌ, 1981/07/05 – 1981/05/17, H. R. Gillespie, pan trap, (CNCI), [CNC 471628]; 1♀, 1Ƌ, 1981/07/19 – 1981/08/21, H. R. Gillespie, pan trap, ( CNCIAbout CNCI), [ CNCAbout CNC 471629, 471630]; Sulawesi Utara: Dumoga Bone Nat. Pk; 0°34'N, 123°54'E, edge of rainforest, 220mGoogleMaps  , 7♀, 7– 25.vi.1985, A.D. Austin, ( WINCAbout WINC) [USNMENT01223023, 0 1223024, 0 1223025, 0 1223026, 0 1223027, 0 1223028, 01223029], (1♀, wings on slide, Figs 38a View Figure ); AFRICA  : Ivory Coast: Bouake, rice field, 1♀, 1980/03, P. Cochereau, ( CNCIAbout CNCI), [ CNCAbout CNC 471596View Materials]  ; 6°13'N 5°02'W Lamto ~ 160km NW of AbidjanGoogleMaps  , 2♀ Ƌ, xi.1988 J.S.Noyes MT/YPT, ( OSUCAbout OSUC), [ OSUCAbout OSUC 142869, 64685]; Kenya: Nyanza kusa, 0°18'12''S 34°53'21''EGoogleMaps  , 1♀, 2003/09/11 – 2003/10/04, I. Přikryl, Malaise Trap, ( CNCIAbout CNCI), [ CNCAbout CNC 471597View Materials]; Mozambique: Niassa Cuamba, Chatholic University of Mozambique farm, 600m  , 1♀, 2006/02/02 – 2006/04/17, M. Olmi, MT, ( CNCIAbout CNCI), [ CNCAbout CNC 471598View Materials]; Nigeria: Oyo Ibadan  , IITA compound, 1♀, 1987/11, J. S. Noyes, MT, ( CNCIAbout CNCI), [ CNCAbout CNC 471599View Materials]; Uganda: Kibale National Park, Kanyawara, Makerere University Biogical Field Station, Primary mid-altitude Rainforest , near stream, 0°33.408'N 30°22.603'E, 1587mGoogleMaps  , 1♀, 2008/08/02, S. van Noort, Malaise Trap, ( SAMCAbout SAMC), [SAM-HYM-P 030697]; United Arab Emirates: SSW of Ghaid , 25.09N 55.48EGoogleMaps  , 1♀, 2005/12/10 – 2005/12/29, A. van Harten, light trap, ( CNCIAbout CNCI), [ CNCAbout CNC #3590View Materials /471600]  ; Zimbabwe: Salisbury, 1♀, 1979/06, A. Watsham, ( CNCIAbout CNCI), [ CNCAbout CNC 471601View Materials]  ; INDIA: Madhya Predesh: Jabalpur, Sof town, scrubby area, 1♀, 1967/03/24, Topàl, ( CNCIAbout CNCI), [ CNCAbout CNC No. 259/471602]; Uttar Predesh: Aligarh   , 1♀, 1978/08/11, M. Hayat, (CNCI), [CNC 471603]; JAPAN: Honshu: Douzuki, Obara, 1Ƌ, 1990/08/08  1990/08/17, K. Yamagishi, PT, ( CNCIAbout CNCI), [ CNCAbout CNC 471631View Materials]; Kyushu: Fukuoka, Mt Hiko , 700m  , 1♀, 1989/09/11 – 1989/09/18, K. Takeno, M. Sharkey, MT, ( CNCIAbout CNCI), [ CNCAbout CNC 471632View Materials]; Tochigi Pref.: Hikinuma, Shiobara   , 1♀, 1985/07/12, K. Takahashi, Truck trap, ( CNCIAbout CNCI), [ CNCAbout CNC 471633View Materials]; NEPAL  : Nepal: centr. Kakani , 2070m, 1♀, 1983/08/1  – 1983/08/23, H.G. Allen, Malaise Trap, (CNCI), [CNC 471634]; PHILIPPINES: Leyte: Visca, Baybay , 1♀, 1Ƌ, 1982/09/23  – 1982/10/20, C. Starr, PT, (CNCI), [CNC 471635, 471636]; THAILAND: Chang: Kiang Doi Suthop, riv. Gully, 1♀, 1985/02/16, D. Jackson, ( CNCIAbout CNCI), [ CNCAbout CNC 471637View Materials]  ; USA: Hawaii: Hilo Coast, Kolekole Beach Park, 1♀, 4Ƌ, 1983/10/19, D. M. LaSalle, ( CNCIAbout CNCI), [ CNCAbout CNC 471640, 471639, 471638, 471641, 471642]; Honolulu , 1Ƌ, 1906  , RCLP Perkins collection, (BPBM to CNCI), [BPBMent 78694].

FFB

Atlantic Forestry Centre, Canadian Forest Service

WINC

Waite Insect and Nematode Collection

NMINH

National Museum of Ireland

CNCI

Canadian National Collection Insects

CNC

Canadian National Collection of Insects, Arachnids, and Nematodes

OSUC

Oregon State University

SAMC

Iziko Museums of Cape Town

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Scelionidae

Genus

Dyscritobaeus

Loc

Dyscritobaeus comitans Perkins

Tortorici, Francesco, Caleca, Virgilio, Noort, Simon Van & Masner, Lubomir 2016

2016
Loc

Dyscritobaeus cerosus ♀: O’Connor & Ashe (2012)

O'Connor & Ashe 2012

2012