Amyosoma cavei, Papp, 2012

Papp, J., 2012, A Taxonomic Study Of The Myosoma Genus-Group With Description Of Amyosoma Cavei Sp. N. From Honduras (Hymenoptera: Braconidae: Braconinae: Braconini), Acta Zoologica Academiae Scientiarum Hungaricae 58 (1), pp. 1-29 : 9-10

publication ID 10.5281/zenodo.5732026


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scientific name

Amyosoma cavei

sp. nov.

Amyosoma cavei sp. n.

( Figs 21–29 View Figs 21–29 )

Material examined (2 ♀♀) – Female holotype + one female paratype: Honduras, Olancho, 15°50’ N / 85°51’ W, taken with Malaise trap in lowland gallary forest, August 1995 (holotype) and 1 February 1996 (paratype), leg. R. CAVE. GoogleMaps – Holotype is deposited in the Zoologisk Museum, Lund and the paratype in Magyar Természettudományi Múzeum , Budapest, Hym. Typ. No. 11711. Holotype and paratype are in good condition: (1) glued on a pointed card by their right mesopleuron, (2) right antenna apically deficient (paratype).

Etymology – The new species, Amyosoma cavei , is dedicated to its collector, Mr. R. CAVE.

Description of the female holotype.–Body 6 mm long. Antenna as long as body and with 58 antennomeres. First flagellomere 1.2 times longer than broad, further 7–8 flagellomeres shorter ( Fig. 21 View Figs 21–29 ), middle flagellomeres cubic and penultimate 12–13 flagellomeres somewhat longer than broad; flagellum distally slightly attenuating. – Head in dorsal view transverse ( Fig. 22 View Figs 21–29 ), 1.6 times as broad as long, eye twice longer than temple, temple weakly rounded. Ocelli middle-sized, faintly elliptic, OOL more than twice length of POL. Eye in lateral view 1.5 times as high as wide, temple above 0.7 times as wide as eye and ventrally narrowing ( Fig. 23 View Figs 21–29 , see arrows). Horizontal diameter of oral opening one-third longer than shortest distance between opening and eye. Head polished, face laterally very finely granulate.

Mesosoma in lateral view 1.7 times as long as high, polished. Notaulix feebly distinct, smooth. – Hind femur 3.5 times as long as broad medially, its hairs dense, of usual length and adpressed ( Fig. 24 View Figs 21–29 ). Hind femur and tibia not flattened, i.e. usual in form. Inner spur of hind tibia 0.33 times length of basitarsus. Hind tarsus a bit longer than hind tibia. Claw downcurved, its basal lobe wide ( Fig. 25 View Figs 21–29 ).

Fore wing somewhat longer than body. Pterostigma ( Fig. 26 View Figs 21–29 ) 4.4 times as long as wide, issuing r from its middle and r as long as width of pterostigma. Second submarginal cell less long, 3–SR 1.5 times length of 2–SR; SR1 faintly bent, 1.4 times longer than 3–SR and approaching tip of wing; cu–a subinterstitial (i.e. just postfurcal). First discal cell low, 1–M 1.5 times length of m–cu, 1–SR–M bent and almost twice as long as 1–M ( Fig. 27 View Figs 21–29 ). – Hind wing: 1r–m faintly bent ( Fig. 28 View Figs 21–29 ).

First tergite ( Fig. 29 View Figs 21–29 ) twice longer than broad behind, its scutum broadening posteriorly, together with further tergites polished. Third tergite medially somewhat longer than second tergite, second tergite laterally narrowing, suture between tergites 2–3 straight, smooth and deep ( Fig. 29 View Figs 21–29 ). Ovipositor sheath long, i.e. as long as hind tibia + tarsus combined.

Antenna, head, mesosoma and legs black, metasoma testaceous. Wings evenly brown fumous, pterostigma blackish, venation proximo-distally brown to blackish brown.

Description of the female paratype – Similar to the female holotype. Body 6.5 mm long. Antenna with 55 antennomeres. Head in dorsal view 1.7 times as broad as long. Hind femur 3.7 times as long as broad medially. Pterostigma four times as long as wide and issuing r slightly proximally from its middle. First tergite 2.3 times longer than broad behind.

Male and host unknown.

Distribution – Honduras.

Taxonomic position – The new species, Amyosoma cavei , runs to A. rufescens (QUICKE et INGRAM) ( Australia) with the help of VAN ACHTERBERG & POLASZEK’ s key (1996: 21), the two species seem to be very near to each other, i.e. only a few features were to be established on the basis of either the key in question or of the original description of A. rufescens despite the distant zoogeographic distributions ( Honduras / Australia):

1 (2) Fore wing: second submarginal cell long, 3–SR 2.7 times as long as 2–SR, pterostigma 4.4 times as long as wide ( Fig. 26 View Figs 21–29 ). Ovipositor sheath long, twice longer than hind tibia. Hind femur 3.5 times as long as broad medially ( Fig. 24 View Figs 21–29 ). Mesosoma black, metasoma entirely testaceous. Fore pair of legs black. Wings brown fumous. ♀: 6–6.5 mm. – Honduras A. cavei sp. n.

2 (1) Fore wing: second submarginal cell less long, 3–SR 1.8 as long as 2–SR, pterostigma 3.1 times as long as wide. Ovipositor sheath short, shorter than (i.e. about half length of) hind tibia. Hind femur 3.2 times as long as broad. Mesosoma testaceous, metasomal tergites bright orange, last three tergites black. Fore pair of legs yellow. Wings pale brown. ♀: 5.7 mm ( Fig. 2 View Figs 1–13 in QUICKE & INGRAM 1993: 305) – Australia A. rufescens ( QUICKE et INGRAM, 1993)


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