Cyptocephala, Berg, 1883

Cyptocephala, Berg, 1883 View in CoL

Cyptocephala Berg, 1883:209 - 210 (reprinted 1884:25 - 26); Rolston andMcDonald, 1984:74 - 77.

Crato Distant, 1893:457 . (Synonymized by Rolston, 1976.)

Thyanta subgenus Parathyanta Jensen-Haarup, 1928:186 . (Synonymized by Rolston and McDonald, 1984.)

Thyanta (in part): Rolston, 1972:282 , 284 - 285; Rolston 1976:6.

Diagnosis. Juga projecting little if any beyond tylus, apex of head either shallowly emarginated or smoothly convex. Bucculae arcuately truncate posteriorly; first rostral segment lying entirely between them; rostral apex reaching to or slightly beyond base of abdomen. Ocelli lying entirely behind imaginary line drawn across posterior limit of reticulation of eyes. Interocular width more than one-half width of head across eyes. Anterolateral margin of pronotum angular dorsoventrally, at least posteriorly, sometimes narrowly reflexed posteriorly, without rim, entire; anterior margins of propleura not produced. Scutellar width at distal end of frena 0.30 - 0.45 basal width. Ostiolarjuga on each side extending 0.7 - 0.80 distance from mesial margin of ostiole to lateral margin of metapleuron. Femora unarmed, tibiae sulcate. Costal angle of each corium lying above penultimate segment. Abdominal venter without basal tubercle or spine.

Parameres bilobed with fine denticles between lobes. Dilation of spermathecal duct not extending full length of enclosed sclerotized rod; enlargement usually present proximad of proximal flange. Spiracles present on 8th paratergites.

Type-species. The type species of Cyptocephala is Cyptocephala cogitabunda Berg, 1883 , by monotypy; that of Crato is Crato urbicus Distant, 1893 , by monotypy = Cyptocephala antiguensis ( Westwood, 1837); and that of Thyanta subgenus Para thyanta Jensen-Haarup, 1928, is Thyanta (Parathyanta) elegantula Jensen-Haarup 1928 by original designation = Cyptocephala cogitabunda Berg.

Comments. Cyptocephala is near Thyanta StAl and Tepa Rolston and McDonald, but it differs especially in having bilobed, denticulate parameres.

KEY TO SPECIES

1. Wide, white, calloused band on each side ventrally, beginning beneath eye and continuing across pleurawith interruptions at anterior and posterior pleuralmargins .............................................................. elegans (Malloch) - Venter lacking calloused band .............................................. 2

2 (1). Juga projecting slightly past tylus, producing shallow emargination in apex of head ............................................................... cogitabunda Berg - Apex of head smoothly arcuate ................. ............................ 3

3 (2). Anterior lobe of parameres acute apically ( Fig. 1); maximum length of each 9th paratergite less than twice its maximum width ( Fig. 15.) alvarengai , new species - Anterior lobe of parameres narrowly to broadly rounded; maximum length of each 9th paratergite about 2.5 times its maximum width .................... 4

4 (3). Females. .......................................................... 5 - Males ........................................................... 7

5 (4). Basal plates tumescent, from lateral view disc protruding beyond mesial margin of plates at base ...................................... antiguensis (Westwood) - Basal plates convex but not tumescent, disc not protruding beyond mesial margin of plates at base.............6

6 (5). Minimal distance between 9th paratergites 1.5 - 2.0 times lengthof 10th sternite ( Fig. 16); basal plates somewhat umbonate in apical angle; last two segments of antennae without apical bands ............ bimini (Ruckes) - Minimal distance between 9th paratergites 1.2 - 1.3 times lengthof 10th stemite ( Fig. 17); basal plates lackingumbo; last three segments of antennae bicolored, pale green to cream basally, rufous to light brown distally ...... ........... pallida , new species

7 (4). Ventral margin of parameres foliate ( Fig. 7) ....... .................. bimini Ruckes - Ventral margin of parameres not expanded ........... ........................ 8

8 (7). Width of scutellum at end of frena less than 2 / 5of basal width; carina entad of parameres on each lateral wall of genital cup at least partially visible ( Fig. 4) ..... ........................................................... pallida , new species - Width of scutellum at end of frena 2 /% or more of basal width; denticle entad of parameres on each lateral wall of genital cup concealed by parameres ........... ......................................................... antiguensis (Westwood)