| OCR Text |
Show i!!, - 15, - 49 the fourth tergite, the articles longer than broad, four basal articles naked; coxo-pleurae elongate surpassing the sternite by more than the length of the latter; the first or the first to fourth pairs of legs with two tarsal spines; the longitudinal furrows of the sternites are mostly only weakly impressed; coxo-pleurae with one terminal point or Ethmostigmus cribrifer spine, dorsally with 2 to 3 spines The prefemur of the toxicognaths with inner tooth; mostly three, very rarely four beyond •.•..• ' 7b. of the basal articles of antennae naked; the second maxillae with one posterior accessory claw; the first tarsus of the last legs normal, without process, prefemur with or without the corner spine Genus Rhysida. . . 8a. 8b. . . . . . . . . . . 16 . . . 9 legs with spines. the last legs without spines; coxopleurae with a 1-2 pointed process and three lateral spines; antennae composed of 20 articles; legs from first to nineteenth inclusive with two tarsal spines, the twentieth with one; tergites margined, beginning first on the eighth plate; prosternum with each dental plate bearing six to seven teeth; sulci beginning on segment 5, a weakmedian keel set off by furrows and two lateral ones on each side on most tergites; ventral sulci distinct across anterior borders of sternites Otostigmus bakeri 10 Three basal articles of antennae naked, at least dorsally. 11 Only 2 to 2 1/2 basal articles of antennae naked Sternites with 2 complete or almost complete longitudinal furrows; coxopleurae often with lateral spines; the prefemur of the last legs ventro-laterally only with one row of 4-5 spines; coxo-pleurae with a 2-3 pointed process; the first to nineteenth pairs of legs with tarsal spines; pores of coxo-pleurae numerous; the last sternite rounded or blunt posteriorly Otostigmus politus a. Tergites with deep black pigments; the inner tooth without elevations Otostigmus politus pigmentatus b. Tergites without pigments; the inner tooth with two small elevations Otostigmus politus dentatus 13 Tergites smooth. not smooth 12 Tergites the fifth on from with seven more or less Tergites conspicuous rough longitudinal keels; the first to eighteenth pairs of legs with two tarsal spines; antennae with 21 articles; 5 + 5 presternal teeth. Otostigmus malayanus Tergites from the eleventh or the thirteenth with spinous streak laterally and finely keeled medially; the first to seventeenth or eighteenth pairs of legs with tarsal spines; 6 + 6 presternal teeth Otostigmus loriae Sternites of several posterior somites with round pustules more or less 14 densely distributed The prefemur of The prefemur of the last . . . • . • . . . . . . . . • . . . . . . . . . . •..•.... 9a. 9b. 10. . . . . . . . . . . . . . . . . . . . . • . . . • . . • . . . • . . . . .. . ..•..•...... ..•..... . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . lla. llb. 12a. . . . • . . . . '.' . . . . . 12b. . . . . . . . . . . . . . . . . • • . . . . . . ..........•................ , . . . . . • . . . . . • . . . . . . . . . . . .. . . . . . .. . .........•.......•..... 13a. 13b. 14a. Sternites smooth . . . . . • . . . . . . . . . . . • . . . . . . . . . . . . . • . . • . . . . • . . . •. . . . . . . . • . . • . . . • . . . . • . . .. . . . . . . . • . . . . . . . . . . . .. 15 from about the thirteenth with fine spinous elevations upon the sides; Tergites with 20 to 21 articles antennae from the sixth margined Otostigmus asper tergite; without such Tergites spinous elevations; margined from the tenth tergite; ..... - 14b. antennae of seventeen articles 15a. Otostigmus philippinus slightly narrowed; tergites smooth; the fourth to from the twelfth to the seventeenth pairs of legs with two tarsal spines; antennae of 18 to 20 articles, its 2 1/5 to 2 1/3 basal articles naked; three to four presternal teeth. Otostigmus astenus The last sternite conspicuously narrowed caudad; the longitudinal furrows of the sternites extend to the middle, at least upon the somites of the posterior region; tergites smooth; antennae of 18 articles; coxo-pleural process two-pointed; the twentieth pairs of legs with one tarsal spine Otostigmus glaber The last sternite broadened . . . caudad, . 15b. . . . • . . . • . . . . . . . • . • . • . . • . . . . . . . . . • . . . . . . but or . . . .. ...•....•......... |
