Microchelonus candidus, Papp, Jenő, 2016

Papp, Jenő, 2016, First Survey Of The Neotropical Species Of Microchelonus Szépligeti With Descriptions Of Twenty-Five New Species (Hymenoptera: Braconidae: Cheloninae), Acta Zoologica Academiae Scientiarum Hungaricae 62 (3), pp. 217-344 : 238-242

Microchelonus candidus sp. n.

(Figs 100–109)

Materialexamined (11 females) – (1) Femaleholotypeandtwofemaleparatypes: Costa Rica, SanJosé, Escazu, holotype (inUSNM): 13–15 April 1988, twoparatypes: 1–7 February 1988 (oneparatypeinZMLU) and 2–13 May 1988 (oneparatypeinHNHM). (2) Fivefemale paratypes: CostaRica, Alajuela, Upala , 15 July 1990 and 11–20 April 1991 (twoparatypes in USNM), 21–30 April 1991 (one paratype in HNHM), 21–31 July 1991 and 11–21 October 1991 (twoparatypesinDEUU). (3) Onefemaleparatype (inDEUU): CostaRica, Guanacastle, 3 kmSEfromRioNaranjo, 17–20 November 1991. (4) Onefemaleparatype (inDEUU): CostaRica, Guanacastle, 14 kmSfromCañas, 1–22 June 1991. (5) Onefemaleparatype (in HNHM): Honduras, Atlantida, Lancetilla, Tela, takenwithMalaisetrapsetupinlowland rainforest, 15 September 1995, leg. R. Cave. – ThetenfemaletypespecimensfromCosta RicaweretakenbyF. D. Parker .

T ypes condition – Holotype is in good condition: (1) glued directly to the pin by the anteriorrightsideofmesosoma, (2) forepairoflegspartlylessvisibleowingtothemounting, (3) nomissingcorporalpart. Tenparatypicfemalesareingoodcondition: (1) nine specimensfromCostaRicagluedliketheholotype, onespecimengluedoncardpoint, (2) flagellipartlymoreorlessdamaged (ormissing).

Typedepositories – HolotypeandtwoparatypesaredepositedinUSNM, fourpara- typesinDEUU, oneparatypeinZMLUandthreeparatypesinHNHM, Hym. Typ. No. 12230–12232.

Etymology – ThenewspeciesreceivedtheLatinname “candidus” referingtoitspolishedcarapace.

Description of the female holotype – Body 3.2 mm long. Antenna as long as head, mesosomaandtwo-thirdsofcarapacecombined, with 16 antennomeres. Scape 2.5 timesaslong asbroadapically, firstflagellomeresixtimesandpenultimateflagellomeretwiceaslong asbroad (Fig. 101a), flagellumfiliform. – Headindorsalviewtransverse, twiceasbroad aslong, eyetwicelongerthantemple, templereceded (Fig. 102). OOLalmosttwiceaslong asPOL, ocellismall. Eyeinlateralviewalmost 1.9 timesashighaswide, genabeyondeye clearlybroadeningventrallyandasbroadaseye; polishedwithdispersehairpunctures (cf. Fig. 88–99. 88. Microchelonusbrasiliensis (Brues, 1912): 88 = apicalforamenofmalecarapace.

89–92. Microchelonusbuscki ( Viereck, 1912) (femaleholotype: 89, 90; male: 91, 92): 89 = cara-

paceinlateralview, 90 = posteriorthirdofcarapaceinventralview, 91 = carapaceindorsal view, 92 = posteriorthirdofcarapaceinlateralview. 93–99. Microchelonuscacumenus Papp,

2010 (femaleholotype): 93 = ultimatethreeflagellomeres, 94 = headindorsalviewwith indicationofitssculpture, 95 = clypeus, 96 = distalpartofrightforwing, 97 = carapacein dorsalviewwithindicationofitssculpture, 98 = carapaceinlateralview, 99 = posterior thirdofcarapaceinventralview.

Fig. 184). Clypeusone- fourthwiderbelowthanhighmedially, itslowermarginconvex (cf. Fig. 347), denselypunctate, interpuncturesshiny. Facetwiceaswideashigh, transversely rugulose- punctate. Headabovesubstriolate (Fig. 102).

Mesosomainlateralviewstout, somewhatlongerthanhigh. Mesoscutumrugo-rugulose, scutellumrugulo-uneven, mesopleuronratherrugose. Propodeumonitshorizon- talsurfacewithanelongateareolabasalis, otherwiseareolatedasinFig. 103. Hindfemur thin, 4.1 timesaslongasbroadmedially (Fig. 104). Hindbasitarsusaslongastarsomeres 2–4 combined.

Forewingsomewhatshorterthanbody. Pterostigma 2.6 timesaslongaswide, issuing r somewhatdistallyfromitsmiddle; 1–R1 0.65 timesaslongaspterostigma, 3–SR 1.4 timeslongerthan r, SR1 faintlybent (Fig. 105 seearrows).

Carapaceindorsalview 1.9 timesaslongasbroadposteriorly, finelystriate, itspos- terior (downvurved) fourthpolished (Figs 100, 106). Carapaceinlateralviewcurved, 3.4 timesaslongashighposteriorly, itsapicalfourthdowncurved (Fig. 107, seearrows). Cara- paceapico-ventrallynotincurved (Fig. 108). Ovipositorsheathshortandconcealed.

Groundcolourofbodyblack. Scapelightreddishyellow, pedicelandflagellomeres 1–2 lightreddishyellowdarkeningbyfumoustint, flagellomeres 3–4 yellow, restoffla- gellumblack. Palpipaleyellow. Pronotumdarkrusty, tegulabrown. Carapaceanteriorly browntoyellow. Legstricoloured: coxae + trochanters 1–2 paleyellow, restoflegs 1–2 yellowwithlightbrownishtint; hindlegbrowntodarkbrown, trochanters, baseoffemurand proximalringoftibiapaleyellow. Wingsfeeblyfumousaroundpterostigma, pterostigma itselflightbrown, parastigmapaleyellow, veinsbrownishyellowtolightbrown.

Variable features of the ten female paratypes – Body 3.2–3.5 mm long. Penultimate flagellomere 1.8–2 timesaslongasbroad (Fig. 101a- b). Inlateralviewgenabeyondeyeabitwid- erthaneye (cf. Fig. 184). Hindfemur 4.1–4.5 timesaslongasbroad. Forewing: Pterostigma 2.8 timesaslongaswide, 1– R1 0.6–0.65 timesaslongaspterostigma (Fig. 109), SR1 straight tomoreorlessbent. Lightcolourofcarapacevariablefromfaintbrownishtolemonyellow .

Maleandhostunknown.

Distribution – CostaRica, Honduras.

Taxonomic position – The new species, Microchelonus candidus , is closest to M. fulgens sp. n., theyareverysimilartoeachotherandareseparatedbya fewfeatureskeyed:

1 (2) Headindorsalviewsomewhatmoretransverse, 2.1 timesasbroad aslong, eye 2.5 timeslongerthantemple (Fig. 227). Penultimateflag- ellomerecubic (cf. Fig. 134 ). Forewing: pterostigmawide, 2.4 timesas long as wide and issuing r from its middle (Fig. 231). Dark colour of legs brown to blackish brown. f: 3.1 mm. – Costa Rica M. fulgens sp. n.

2 (1) Headindorsalviewsomewhatlesstransverse, twiceasbroadaslong, eyetwicelongerthantemple (Fig. 102). Penultimateflagellomere 1.8–2 timesaslongasbroad (Fig. 101a–b). Forewing: pterostigmalesswide, 2.6–2.8 times as long as wide and issuing r distally from its middle (Fig. 105, 109). Dark colour of legs light brown to brown / dark brown. f: 3.2–3.5 mm. – CostaRica, Honduras M. candidus sp. n. The new species is also near to M. latistigma sp. n. and M. exceptus sp. n., theirdistinctionispresentedinkeycouplets 4 (3) – 8 (9), seethekeytothe female Microchelonus species.

Figs 100–114. 100–109. Microchelonuscandidus sp. n. (f, holotype: 100, 102–106; femalepara- type: 108–109): 100 = posteriorthirdofcarapaceindorsalviewwithindicationofitssculp- ture, 101 = ultimatethreeflagellomeresoffemaleholotype (a) andfemale (b), 102 = head indorsalviewwithindicationofitssculpture, 103 = propodeum, 104 = hindfemur, 105 = distalpartofrightforewing, 106 = carapaceindorsalviewwithindicationofitssculpture, 107 = carapaceinlateralview, 108 = posteriorfourthofcarapaceinventralview, 109 = distal part of right fore wing. 110–114. Microchelonus carinatus ( Provancher, 1881) : 110 = scutellum (fm), 111 = headindorsalview (fm), 112 = distalpartofrightforewing (f), 113 = carapace indorsalviewwithindicationofitssculpture (f), 114 = pterostigma + 1–R1 offorewing (m).

Taxonomicremark – PropodeumoftheNeotropicalspeciesof Microchelonus areroughlyrugosetoscabrouswithamedio-transversecarina, carina itself with two pairs of denticules ( Figs 38 , 63, 144, 220). From this standard featurethepropodeumof M. candidus sp. n. (togetherwithfurtherfourspe- cies: M. curtulus sp. n., M. exceptus sp. n., M. fulgens sp. n. and M. latistigma sp. n.) deviates: mediallywith (long) areolabasalis, otherwiseareolate (Figs 103, 156, 187). Thisdeviatingcharactermayleadinthefuturetoprovokeanew subgeneric (orgeneric) rearrangement.

Figures

Figs 128–139. 128–132. Microchelonus cavei Papp, 2010 (f, holotype): 128 = ultimate three flagellomeres, 129 = headindorsalviewwithindicationofitssculpture, 130 = distalpart ofrightforewing, 131 = carapaceindorsalviewwithindicationofitssculpture, 132 = carapaceinlateralview. 133–138. Microchelonusconstrictus Papp, 1999) (f, holotype): 133 = scapeandpedicel, 134 = flagellomeres 8–14, 135 = headindorsalviewwithindicationof itssculpture, 136 = hindfemur, 137 = distalpartofrightforewing, 138 = carapaceindorsal viewwithindicationofitssculpture. 139. Microchelonuscurticarinulus sp. n. (f,holotype):

Figs 32–45. 32–34. Microchelonus aperon sp. n. (f, holotype): 32 = distal part of right fore wing, 33 = carapaceindorsalviewwithindicationofitssculpture, 34 = carapaceinlateral view. 35–44. Microchelonusavron sp. n. (m, holotype): 35 = headindorsalviewwithindica- tionofitssculpture, 36 = clypeus, 37 = headinlateralviewwithindicationofitssculpture, 38 = propodealcarinaindorsalview, 39 = hindfemur + tibia, 40 = distalpartofrightfore wing, 41 = carapaceindorsalviewwithindicationofitssculpture, 42 = carapaceinlateral view, 43 = apicalforamenofcarapace, 44 = posteriorthirdofcarapaceinventralview. 45. Microchelonusbermus sp. n. (m, holotype): 45 = capaceinlateralview.