Microchelonus amelot, 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 : 224-226

Microchelonus amelot sp. n.

(Figs 10–19)

Materialexamined – Femaleholotype: CostaRica , Limon, 7 milesNfromGuacimo, 22 February – 1 March 1988, leg. F. D. Parker. – Holotypeisingoodcondition: (1) glueddirect tothepinbytherightsideofmesosoma; (2) rightforelegandproximalhalfofflagellum lessvisibleowingtothemounting. HolotypeisdepositedintheHNHM, Hym. Typ. No. 12227 .

Etymology – Thenewspeciesreceivedthelatinizedphantasyname “amelot”.

Description of the female holotype – Body 3.3 mm long. Antenna short, as long as head andmesosomacombined (2.2 mmlong). Firstflagellomere 3.3 timesandpenultimateflag- ellomere 1.5 timesaslongasbroad. – Headindorsalviewtransverse (Fig. 10), twiceas broadaslong, eyetwicelongerthantemple, templereceded. OOLone- thirdlongerthan POL, ocellimiddlesized. Eyeinlateralview 2.3 timesashighaswide, genabeyondeye broadeningventrallyandwider (18:14) thaneye, genarugulose (Fig. 12 seearrows). Clypeus 1.5 timesaswidebelowashighmedially, denselypunctateanddull, itslowermargin mediallytruncate (Fig. 11). Malarspace 1.5 timesaslongasbasalwidthofmandible. Face 1.5 timesaswideashigh, rugose. Vertex, occiputandfronsrugose (likeface).

Mesosomainlateralview 1.5 timesaslongashigh, scabrous. Notaulixdistinct. Scutellumpunctate- subfoveolate, interspacesshiny (Fig. 13). Fourdenticulesofpropodeal transversecarinarathersmall (Fig. 14). Hindfemur 3.3 timesaslongasbroadmedially (Fig. 15). Hindbasitarsusaslongastarsomeres 2–3 combined.

Forewingshorterthanbody. 2.7 mmlong. Pterostigmaalmost 2.7 timesaslongas wide, issuing r distally from its middle and almost 0.8 times as long as 3–SR (or 3–SR almost 1.3 timeslongerthan r), SR1 straight, 1–R1 halfaslongaspterostigma (Fig. 16).

Figs 17–31. 17–19. Microchelonusamelot sp. n. (f, holotype): 17 = carapaceindorsalview withindicationofitssculpture, 18 = carapaceinlateralview, 19 = posteriorthirdofcara- paceinventralview. 20–25. M. angustus Papp, 1999 (f, holotype): 20 = flagellomeres 10–14, 21 = headindorsalviewwithindicationofitssculpture, 22 = headinlateralviewwith indicationofitssculpture, 23 = scutellum, 24 = distalpartofrightforewing, 25 = carapace indorsalviewwithindicationofitssculpture. 26–31. M. aperon sp. n. (f, holotype): 26 = scape, pedicelandproximal / distalpartsofflagellomeres, 27 = headindorsalviewwith indicationofitssculpture, 28 = headinlateralviewwithindicationofitssculpture, 29 =

scutellum, 30 = hindfemur, 31 = posteriorthirdofcarapaceinventralview.

Carapaceindorsalview (Fig. 17) twiceaslongasbroadandevenlybroadeningpos- teriorly, longitudinallyandfairlystronglystriated, interstriationscrenulated, hindfourth ofcarapacerugulose. Carapaceinlateralview 3.2 timesaslongashighposteriorly, apicallyrounded (Fig. 18). Carapaceapico-ventrallyweaklyincurved (Fig. 19). Ovipositor sheathaslongashindbasitarsus.

Groundcolourofbodyblack. Scapeandpediceltestaceous, flagellomeres 1–4 darkeningtestaceous, restofflagellumblackishbrown. Palpilightbrownish. Tegulaandpara- tegulablackishtobrown. Forelegyellowishtoyellow, femurbrown, tarsusyellow. Middle leg: coxa + trochantersyellow, femur + tibiabrownishblack, tarsusyellowwithbrownish suffusion. Hindlegblackishtoblack, trochantersyellow, tarsusblackish. Wingshyaline tosubhyaline, marginalcellbrownishfumous. Pterostigmabrown, veinsyellowtolight brown.

Maleandhostunknown.

Distribution – Costa Rica.

Taxonomic position – With the help of McComb’s key to the Nearctic spe- ciesof Microchelonus thenewspeciesrunsto M. periplocae (McComb) , their distinctioniskeyed (couplet-textquotedfromthedescription):

1 (2) “Mesoscutum...finelyrugulose, shinyandalmostpunctatemedially”; scutellumrugulose. Genainlateralviewalmostaswideaseye. “Cara- pace [indorsalview] 0.65 timesaswideaslong”, i.e. carapacelessthan twiceaslongasbroad. Forewing: pterostigma 2.5 timesaslongaswide ( Fig. 130 inMcComb 1968: 146). “Anteriorandmiddlefemoranarrowly testaceous.” f: 2.4–3.1 mm. – USA: California

M. periplocae ( McComb, 1968)

2 (1) Mesoscutumscabrous, scutellumsmooth. Genainlateralviewwider thaneye (18:14) (Fig. 12 seearrows). Carapace 0.5 timesasbroadaslong, i.e. carapacetwiceaslongasbroad (Fig. 17). Forewing: pterostigmaalmost 2.7 timesaslongaswide (Fig. 16). Foreandmiddlefemorabrown. f: 3.3 mm. – Costa Rica M. amelot sp. n.

Inthekeytothefemale Microchelonus speciesitrunsto M. kellieae (Marsh) ,

see couplets 72 (75) – 74 (73).

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):