

30. 

 XYELA PUSILLA. 



Order Hymenoptera. Fam. Xiphydriidae. 



Type of the Genus, Xyela pusilla Dalm. 

 Xtela Dalm., St.Farg., Curt. — Pinicola ^re6. — Mastlgocerus iiC/M^r, 

 Antenna inserted in front of the face, at the base of the clypeus, 

 remote, longer than the head and thorax especially in the male, 

 geniculated, slightly pubescent, 12-jointed, 3 basal joints stout,. 

 1st elongated, cylindric, 2nd shorter, obconic, 3rd very long, 

 stout and cylindric, equal in length to the 9 following, which 

 are slender and filiform, the apical joint minute (1), 

 Labrum membranous, transverse, narrowed before, margin en- 

 tire and ciliated (2). 



Mandibles corneous, slightly curved, with 3 irregular teeth on 

 the internal margin, the lower tooth dilated and forming a lobe 

 in one (3). 



Maxillce small, bilobed ; internal lobe subovate, hairy at the 

 apex ; the other hairy outside, with a smaller lobe at the apex. 

 Palpi very long, stout and 4-jointed, basal joint short, curved, 

 2nd thrice as long, bent and clavate, 3rd very long, inflated 

 towards the base, attenuated to the apex which is very slender, 

 and terminates in a little cup, whence arises the 4th joint which 

 is as long as the 2nd, strap-shaped and membranous (4). 

 Mentum obtrigonate- truncate. Lip obsolete. Palpi longish, 

 clavate, pubescent, 4-jointed, 1st and 3rd joints short, 2nd twice 

 as long, 4th large, somewhat ovate and inclining inward (5). 

 Head transverse-ovate : eyes lateral, large and oval, not prominent : 

 ocelli 3 in triangle on the crown. Thorax not broader than the head, 

 orbicular ; collar short. Abdomen sessile, short, someiohat elongate- 

 ovate, the apex narrowed and scutiform in the male, terminated by an 

 exserted ovipositor in the female as long as the abdomen (6 under- 

 side) : lateral lobes (7 a) lanceolate, compressed, pubescent outside, 

 inclosing a sword-shaped membranous Oviduct, corneous down the 

 centre {b). Wings large, superior with 18 cells, 3 marginal and 4 

 submarginal ; stigma large : inferior notched at the anal angle ; with 

 many cells. Legs moderate : thighs stoutish : tibiae, anterior with 

 a long spine at the apex, the others with slender spurs, intermediate 

 with 1 , posterior with 2 bristles, near the middle : tarsi as long 

 or longer than the tibice, 5 -jointed, basal joint long, 4th the shortest : 

 claws slender curved : pulvUH distinct. 

 Eggs somewhat oval. Metamorphoses and economy unknown. 



Pusilla Dalm. — Curt. Guide, Gen. 478. 1. 



Female black, shining : clypeus and eyes margined with yellow ; 

 thorax with 2 yellow or orange spots before : abdomen piceous : 

 ovipositor, trophi and legs ochraceous, thighs dusky, tips of 

 tarsi black : antennae piceous, subcastaneous at the base : wings 

 pale yellowish, stigma and nervures darker. Male with the 3 

 basal joints of antennae ferruginous : head yellow, crown and 

 front piceous, with 2 yellow stripes at the base and a piceous 

 long spot on the face : a lunate yellow mark behind the collar 

 and a yellow spot near the scutel. 



In the Cabinets of Mr. Dale, the Author, 8fC. 



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