Carphococcus apodus Miller and Stocks, 2022

Miller, Douglass R. & Stocks, Ian C., 2022, New genera and species of felt scales (Hemiptera: Coccomorpha: Eriococcidae), with descriptions of new species and immature instars of described species, Zootaxa 5221 (1), pp. 1-213 : 44-48

Carphococcus apodus Miller and Stocks sp. n.

Specimens examined: Adult female holotype (single specimen on slide) with right label “ Carphococcus / apodus / Miller & Stocks / Holotype / adult ♀;” left label “ Gymnococcus / 30 km. E. Rosario / on Arthrostylidium / longifolium / Mt. La Dispensa , Sinaloa Mex. / 1500 ft. Aug. 6, 1943 / FA McClure, colr. / Mc Clure 21204 / 44- 666;” label on back of slide “ Carphococcus / apodus Miller & / Stocks / HOLOTYPE / USNM.” Holotype is in USNM . Paratypes: MEXICO: Sinaloa: Mt. La Dispensa, 30 km E. Rosario , 1,500 ft. elevation, VIII-6-1943, on A. longifolium (= Guadua longifolia ), F.A. Mc Clure (1 ad. ♀ holotype, 1 ad. ♀ paratype, 2 second-instar ♀♀ exuviae paratypes, on 4 slides) UNAM (1 slide), USNM (3 slides) .

Etymology: The species epithet “ apodus ” is derived from the Greek word “ a -” meaning “absence”, and the Greek word “ podos ” meaning “foot” and refers to the absence of legs in this species.

Field features: Probably occurring in leaf sheaths of the bamboo host.

Adult female ( Fig. 21 )

Description: Holotype, slide mounted, 2.0 mm long, 1.0 mm wide (paratype 4.1 mm long, 1.1 mm wide). Body elongate, without protruding anal lobes. Anal-lobe area dorsally each without enlarged or flagellate setae, with several microtubular ducts; ventrally each with 5 or more flagellate setae, including elongate anal-lobe seta, and with several micro- and macrotubular ducts.

Dorsum with flagellate setae from head to segments III or IV, largest setae along body margin each 24 μm long, (paratype 22). Enlarged setae in transverse rows on abdominal segment IV to VII, with no longitudinal pattern; of 1 size: largest seta approximately 30 μm long, smallest approximately 22 μm; enlarged setae straight, with truncate apices, and thick setal bases that appear fused to main part of seta; each seta on dermal projection; segment IV with 22 enlarged setae (paratypes with 29). Macrotubular ducts scattered over entire surface, decreasing in abundance anteriorly, each about 25 μm long (paratype 25–30). Microtubular ducts each about 6 μm long (paratypes 5–7 μm), with area farthest from dermal orifice sclerotized and divided into 2 parts, apical portion rounded or bilobular, ¼ or ½ length of remaining sclerotized portion; total sclerotized area same length as or longer than unsclerotized area; dermal orifice heavily sclerotized, without projecting tube. Microtubular ducts lightly scattered over entire surface, least numerous in medial areas of head, thorax, and anterior abdominal segments. Multilocular pores present along body margin from head to segment II, of 4 kinds: 11-locular pores and 5-locular pores uncommon, in approximately equal numbers; 9-locular pores less numerous than 7-locular pores; 7-locular pores most abundant. Cruciform pores absent. Sclerotized nodules present over surface of head to segment III. Microtrichia absent. Body margin crenulate from head to segment III.

Anal ring ventral, circular, complete, with few small cells and 3 setae on each side of ring, each longer than diameter of ring. Anal tube and anal opening unsclerotized, with anal flap.

Venter with flagellate setae noticeably elongate on posterior abdominal segments, becoming shorter anteriorly, longest seta on segment II 18 μm (paratype 15) long, on segment VII 46 μm (paratype 43); anal-lobe seta 132 μm long (paratype broken); setae apically acute. Enlarged setae absent. Macrotubular ducts of same size as on dorsum, abundant on abdomen, uncommon on head and thorax. Microtubular ducts sparsely scattered over surface. Small microtubular ducts in mediolateral lines from segment III to VIII. Multilocular pores of same 4 kinds and relative abundance as on dorsum, present along body margin from head to segment II, near spiracles, and in medial areas of mesothorax to segment IV. Cruciform pores present in medial areas from head through segment VI, in sublateral clusters from segment II to VI. Legs absent. Antennae each either unsegmented or 3-segmented, about 37 μm long (paratype 68); when unsegmented, apical segment with 5 sensory setae; when 3-segmented, proximal 2 segments with thin, broken, sclerotized rings, with 3 or 4 sensory setae. Eyes ventral, present in small dermal pocket. Frontal lobes and preantennal pore absent. Microtrichia present from prothorax to segment VII.

Notes: The description is based on two specimens from one locality. The adult female of Carpho. apodus is similar to the adult female Ap. idiastes in lacking legs and in having reduced antennae. It differs as follows (character states of Carpho. apodus are in brackets): body margin without crenulations or wrinkles (with wrinkles); body margin without nodules (with nodules); enlarged setae abundant over dorsum (restricted to abdomen on dorsum); with 1 size of microtubular duct (with 2 sizes, smaller ducts concentrated on venter of abdomen).

Second-instar female ( Fig. 22 )

Description: Slide-mounted specimens, 1.7–1.8 mm long, 0.8–1.0 mm wide. Body elongate, without protruding anal lobes. Anal-lobe area dorsally without setae or ducts; laterally each lobe area with 3 marginal enlarged setae; ventrally each with 2 or 3 flagellate setae including elongate anal-lobe seta.

Dorsum with flagellate setae from head to segment VIII, arranged in 4 pairs of longitudinal lines, longest seta about 23 μm long. Enlarged setae present along body margin from pro- or mesothorax to posterior apex of abdomen, with 2 setae present on each lateral margin of each abdominal segment except VIII with 3 pairs, seta on anterior margin of each segment largest, arranged in single marginal longitudinal line; of 1 variable size: largest seta about 40 μm long, smallest about 22 μm. Enlarged setae straight, with acute apices and thick setal bases that appear fused to main part of seta, set on dermal projection; with 4 setae on segment IV. Macrotubular ducts absent. Microtubular ducts 5–7 μm long, with area farthest from dermal orifice sclerotized and divided into 2 parts, apical portion rounded or bilobular, ¼ or ½ length of remaining sclerotized portion; total sclerotized area same length as or longer than unsclerotized area; dermal orifice either lightly or heavily sclerotized, without projecting tube. Microtubular ducts lightly scattered over surface, least numerous in medial areas of head, thorax, and anterior abdominal segments. Multilocular pores along body margin from head to segment V, of 3 kinds: 11-locular pores, 7-locular pores, and 5- locular pores; 7-locular pores most abundant. Cruciform pores absent. Sclerotized nodules and crenulations absent, with a few small projections near posterior body margin. Microtrichia absent.

Anal ring ventral, circular, complete, with few small cells and with 3 setae on each side of ring, each longer than diameter of ring. Anal tube and anal opening weakly sclerotized, with anal flap.

Venter with flagellate setae present over entire surface, longest seta on segment II 12 μm long, on segment VII 28 μm long; anal-lobe seta 98 μm long. Enlarged setae absent. Macrotubular ducts absent. Microtubular ducts restricted to posterior 2 abdominal segments. Multilocular pores of same 3 kinds and relative abundance as on dorsum, present along body margin from head to segment IV, near spiracles, and in medial areas of mesothorax to segment IV. Cruciform pores in medial areas from head through segment VI, in sublateral clusters on segments II to VII. Legs absent. Antennae unsegmented, each about 52 μm long, with 3 sensory setae. Eyes ventral, each set in small dermal pocket. Without small microtubular ducts. Frontal lobes and preantennal pore absent. Microtrichia present on segments VI to VIII.

Notes: The description is based on two mutilated exuviae from one locality.The second-instar female of Carpho. apodus is unique in lacking legs, and in having unsegmented antennae, a distinctively shaped anal ring, and many multilocular pores predominantly with more than 5 loculi.

Figures

FIGURE 21. Carphococcus apodus sp. n., adult female. 30 km. E. Rosario, Mt. La Dispensa (elevation 1,500 ft.), Sinaloa, Mexico, August 6, 1943, on Arthrostylidium longifolium (=Guadua longifolia), F.A. McClure. A=enlarged seta; C=7-locular pore; D=5-locular pore; F=microtubular duct; G=macrotubular duct; H=cruciform pore; I=anal ring; J=antenna; T=pore with>7 loculi; Z=body margin (hatched areas on the body of the inset with crenulations).

FIGURE 22. Carphococcus apodus sp. n., second-instar female (shed skin). 30 km. E. Rosario, Mt. La Dispensa (elevation 1,500 ft.), Sinaloa, Mexico, August 6, 1943, on Arthrostylidium longifolium (=Guadua longifolia), F.A. McClure. A=enlarged seta; C=7-locular pore; D=5-locular pore; F=microtubular duct; H=cruciform pore; I=anal ring; J=antenna; T=pore with>7 loculi.