218 Journal New York Entomological Society, t^'oi- xxi. 



Cystodiplosis Kieff. & Jorg. by the reduced palpi and the third vein 

 uniting with the margin well beyond the apex, it is easily distinguished 

 therefrom by the wings not being very long, the rudimentary pulvilli 

 and the quite different genitalia. The type is A. speciosa n. sp. 



Astrodiplosis speciosa new species. 



The midge described below was reared from an irregular stem gall 

 on an unknown vine collected at Puerto Barrios, Guatemala, March 

 20, 1913, and forwarded to us through the courtesy of Professor E. 

 Bethel, Denver, Col. The species is easily distinguished by its bril- 

 liant orange yellow color and strongly contrasting black markings 

 upon both the wings and legs. 



Gall. — Length 2 to 9 cm., diameter approximately 2 cm. This is an irregu- 

 lar, gouty stem swelling composed of tumid soft tissues containing here and 

 there irregularly oval cells with a diameter of approximately 2 mm. 



Larva. — Length 3.5 mm., moderately stout, tapering slightly at both ex- 

 tremities, yellowish white and with abundant white adipose tissue. Head 

 small, broad, the sides, the indistinct tips of the mouthparts and apparently 

 the labial margins being chitinized. Antennae stout, uniarticulate, with a 

 length ^ greater than the diameter. Skin coarsely shagreened ; breastbone 

 small, bidentate, posteriorly either weakly chitinized or transparent, and a 

 little behind it two indistinct, slightly diverging, black lines. The posterior 

 body segment is stout, much constricted and with a length approximately ^ 

 greater than its diameter. 



Exuviae. — Length 4 mm., light yellowish brown, the antennal cases hardly 

 extending to the base of the abdomen and with cephalic processes at the ante- 

 rior basal angles, fhe thoracic processes represented by conical, denticulate 

 elevations. Wing cases reaching to the base of the third abdominal segment ; 

 leg cases to the base of the fifth. Abdominal segments dorsally, each with a 

 transverse basal row of irregular, stout, somewhat halbert-shaped spines ; 

 terminal segment irregular. 



Male. — Length 3.5 mm. Antennae ^ longer than the body, sparsely 

 haired, yellowish transparent or reddish; 14 segments, the fifth binodose, the 

 stems with a length 21/2 and ZV2 times their diameters, respectively, the 

 basal enlargement subglobose and with well-developed circumfili extend- 

 ing almost to the base of the cylindric distal enlargement, which latter has 

 a length twice its diameter and well-developed circumfili basally and apically, 

 the loops of the latter extending almost to the apex of the segment. Palpi : 

 the one segment has a length 2^ times its diameter and tapers irregularly 

 from a somewhat swollen base. Eyes broadly confluent ; the entire body a deep 

 yellowish orange or reddish orange. Wings fuscous, except most of the area 

 lying between the third and fifth veins and extending from the basal fourth 



