Annual report . mparatively slight service. The type of this genus is M .s t i r p i u m Kieff. The members of this group present considerable variations in thenumber of antennal segments, especially in the female, they rangingfrom 11 in M. gilletti Felt to 22 in M. articulosa known males have 14 or 16 stemmed antennal segments. Thepalpi may be either tri- or quadriarticulate. The wings present thetypical venation of Campylomyza. The pulvilli may be as longas the claws or rudimentary. Near the posterior extremity of theabdomen the females have a pair of submedian, ventral, globularor
Annual report . mparatively slight service. The type of this genus is M .s t i r p i u m Kieff. The members of this group present considerable variations in thenumber of antennal segments, especially in the female, they rangingfrom 11 in M. gilletti Felt to 22 in M. articulosa known males have 14 or 16 stemmed antennal segments. Thepalpi may be either tri- or quadriarticulate. The wings present thetypical venation of Campylomyza. The pulvilli may be as longas the claws or rudimentary. Near the posterior extremity of theabdomen the females have a pair of submedian, ventral, globularor trumpet-shaped glands. The ovipositor is short and indistinctly 184 NEW YORK STATE MUSEUM tri- or quadriarticulate. The male genitalia are stout with a short,swollen terminal clasp segment. The one reared American species,M . 1 i g n i v o r a Felt, was obtained from the fungous affectedheartwood of a pine, the larvae undoubtedly using the rather stoutbreast bone to erode irregular cavities in the affected Fig. 50 Fifth and sixth an-tennal segments of female M o -nardia lignivora, en-larged. (Original) Fig. 51 Fifth antennal segment, views from op-posite sides, of M on a r d i a lignivora, male,enlarged. (Original) Key to species a 11 antennal segments, subsessile; femalesb Length mm; abdomen fuscous yellowish; fifth antennal seg-ment with a length equal to its diameter, the third palpal segment one-third longer than the second gilletti Felt, C. 1239a oa 12 antennal segments, subsessile; females b Length 2 mm; abdomen fuscous yellowish; fifth antennal segmentwith a length one-quarter greater than its diameter, the third palpal segment one-quarter longer than the second toxicodendron Felt, C. 122bb Length .75 mm; abdomen fuscous yellowish; fifth antennal seg-ment with a length one-quarter greater than its diameter; fourth palpal segment with a length one-half greater than the third alexanderi n. sp., C. 1370aaa 14 antennal segments b Antennal segments subsessilec Leng
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902
