310 



FAMILY X. PSELAPHID^. 



TV. Tmesiphorfs Lee. 1849. (dr., "a fissure + to carry.'.') 



Antenna^ clavate ; frontal tubercles longer than wide : fourth 

 joint of raaxillai\v palpi triangular and emarginate; head and tho- 

 rax with a network of large rounded punctures. Two species are 

 known. 



592 (1809). Tmesipiiorus costalis Lee. Bost. Journ. Nat. Hist.. VI, 1S49. 77. 

 Elongate-oval. Piceons, shining, clothed with short, fine, appressed yel- 

 lowish hairs. Head two-thirds as long as broad; frontal fissure deep, 

 branching behind the frontal tubercles towards the lovea (m vertex; eyes 

 prominent. Antennte of male more than half the length of body, second 

 joint cylindrical, one-third as long and two-thirds as wide as first ; third to 

 seventh globular, eighth to tenth gradually larger, obconical, eleventh as 

 long as ninth and tenth together, notched on one side near base ; female an- 

 tennae shorter, less robust and without notch on last .joint. Thorax bell- 

 shaped, with an obtuse tubercle each side near middle, disk with two foveie 

 on apical third and a larger one each side near base. Elytra each with a 

 broad, fiat-bottomed groove on basal half, convex behind; humeri high, 



Fig. 148. a, Cedius spinosus; b, Cedius ziegleri; c. Tmesiphorus carinalus; d, I'ilopius lacuslris. .\11 highly 

 maguified. (After Brendel and Wickhani.) 



prominent. Abdomen broadly margined, first and second dorsal segments 

 carinate on the sides. Length ;J.3 mm. (Fig. 147, h.) 



Throughout the State; common. March Si-December 29. Oc- 

 curs beneath stones and bark and in ants' nests. Gregarious in 

 winter beneath half -buried logs in upland woods. 



59.'] (1S70). Tmesiphoeus CARiNATrs Say, Journ. IMiil. Acad. Nat. Sci., IV, 

 1824, 97; ibid. II, 235. 

 Pale I'eddish-brown, densely punctate; pubescence short, appressed. Ver- 

 tex with median frontal groove broader and not connected by branches with 

 the fovea. Front fovea of thorax wanting. Abdomen with a median carina, 

 as well as one eacli side (m the second and third dorsal segments. Other- 

 wise as in cvstalis. Length 2.5 nun. (Fig. 148, c.) 



Crawford County; rare. August 13. 



