i6 



STREPSIPTERA 



primary veins from base, with two detached veins between radius and medius. Coxae contiguous; 

 middle trochanters approximate; tarsi four-jointed, without claws. CEdeagus at base triangularly 

 truncate externally, at basal third with a long shallow emargination on external edge, at apical third 

 abruptly bent outward in a rounded right angle, tapering to a point, the inner edge at apical bend is 

 produced also in an acute process, the two apices being united bv a convex edge. 



Female. — Cephalothorax rather abruptly narrowed behind stigmatal angle, subtriangular to 

 ovate, more or less obtuse or truncate at apex. Head about half as wide as metathorax at spiracles. 

 Spiracles often prominent. Mouth ventral, with mandibles on each side, rather broad and obtuse. 

 Abdomen with five median genital canals on the second to sixth segments. 



Triungulinid. — Body oblong, slightly narrowing posteriad. Tenth segment medianly cleft, forming 

 two tubercles, each bearing a long stylet. 



Type «rf species. — S. melittae, Kirby. 



Geographical distribution of species. — Parasites of bees of the genus Andrena. 

 i. 5. advarians, Pierce, Bull. U. S. Nat. Mus. no. 66, pp. 97, 98, pi. 3, British Columbia, 

 f. 1 (1909). 



2. S. andrenoides, Pierce, Proc. U.S. Nat. Mus. Vol.40, pp. 493, 494. (191 1). Illinois. 



3. S. asteridis, Pierce, ibidem, p. 494 (ign). Illinois. 



4. 5. aterrima, Newport. Proc. Linn. Soc. Lond. Vol. 1 . pp. 317-320 (1847). England. 



S. trimmeraini. Smith, Trans. Ent. Soc. Lond. (2), Vol. 4, pp. ii5-iiS, 



pi. 24. ft". B, C (iS57 . 

 S. aterrima. Saunders, Trans Ent. Soc. Lond. p. 29 (1872). 

 5. melittae aterrima. Friese, Zool. Anzeig. Vol. 29, p. 739 (1906). 

 5. aterrima. Pierce, Bull. U. S. Nat. Mus. no. 66, p. 97 (1909). 



5. S. bipundatae, Pierce, ibidem, p. 98 (1909). 



6. S. bruneri. Pierce, ibidem, p. 98, pi. 3. f. 2 (1909). 



7. S. californica, Pierce, ibidem, p. 99 (1909). 



8. S. childreni, Gray, in Griffith, Anim. Kingdom. Ins. Vol. 2, p. 683, 



pi. 5 9 (i832). 



S. childreni. Smith. Trans. Ent. Soc. Lond. (2), Vol. 4, pi. 24 (1857); 

 Pierce, Bull U. S. Nat. Mus. no. 66, p. 96 (1909). 



9. 5. claytaniae, Pierce, Bull. U. S. Nat. Mus. no. 66, p. 99. pi. 3, f 3 (1909). Georgia. 



5. imitatrix, Pierce, ibidem, p. 104, pi. 3, f. 10 (1909). Texas. 



var. vierecki. Pierce, ibidem, p. no, pi. 4, f. 11 (1909). Texas. 



10. S. comii, Pierce, ibidem, p. 100, pi. 3, f. 4 (1909). Wisconsin. 



11. 5. cran'fordi, Pierce, ibidem, pp. 100-102, text fig. 3, nos. 5, 6; pi. 2, Texas. 



ff.5,6, 8-12; pi. 3,1". 5(1909). — PI. I, Fig. 5; PI. 4, Figs. 20, 3 5. 



12. S. cressoni, Pierce, ibidem, p. 102, pi. 3, f. 6 (1909). Maine. 

 i3. 5. dalii, Curtis, Brit. Ent. Vol. 5, p. 226 (1828). England. 



5. dalii. Smith, Trans. Ent. Soc. Lond. (2), Vol. 4, pi. 24 (1857). 



5. melittae dahlii, Friese, Zool. Anzeig. Vol. 29, p. 739 (1906). 



5. dalii. Pierce. Bull. U. S. Nat. Mus. no. 66, p. 95 (1909). 

 14. S. dominiquei, Pierce, ibidem, pp. 102, io3 (1909). France. 



i5. S. graenicheri, Pierce/ibidem, p. io3, pi. 3, f. 7 (1909). Wisconsin. 



16. S. hartfordensis. Pierce, ibidem, p. io3, pi. 3, f. 8 (1909). Georgia. 



17. S. hippotts, Pierce, ibidem, pp. io3, 104, pi. 3, f. 9 (1909). Ohio. 



18. S. mandibularis, Pierce, Proc. U. S. Nat. Mus. Vol. 40, pp. 494, 495 Illinois. 



(1911). 

 K). 5. melittae, Kirby, Monogr. Apum Anglia?, Vol. 2, pp. 112, ii3 (1S02). England, Germany, Hun- 

 5. kirbyi, Leach, Zool. Misc. Vol. 3, p. i35 (1817). [gai'V. 



5. haworthi, Stephens, Syst. Cat. Brit. Ins. Vol. 1, p. 403 (1829). 

 5. melittae, Saunders, Trans. Ent. Soc. Lond. pp. 26, 27 (1872); Pierce, 

 Bull. U. S. Nat. Mus. no. 66, pp. 94, 95, text fig. 2, no. 14 : pi. 2, f. 4 

 (1909). 



Indiana, Alabama, Wiscon- 

 Nebraska. [sin, Nebraska. 

 Southern California. 

 Nova Scotia. 



